Discover Top Developer Profiles

Our directory at Upstaff.com showcases a talented group of developers, each bringing a wealth of expertise to the table.

  • With profiles highlighting skills in IT development, AI, design, sales, marketing, admin, and customer support, our developers stand out for their rigorous vetting and diverse technical proficiencies. Ranging from seasoned experts with over a decade of experience to skilled mid-level professionals, they excel in languages like JavaScript, Python, and React, tackling complex projects with precision.
  • Hailing from various regions, including Europe, LatAm, Israel, and the United States, our developers offer a global perspective, ensuring adaptability and high-quality work across industries.

Each profile reflects a commitment to excellence, validated through thorough technical assessments and communication evaluations, making them reliable partners for any project.

Facebook Auth
Dart
Kotlin
MVVM+Rx
GraphQL
Graphene
OneSignal
PostgreSQL
SQLAlchemy
Agile
Scrum
Codemagic
Git
...

Software engineer with 5+ years of experience specializing in Flutter development, adept at leading teams, and establishing development standards. Proven track record in architecting and deploying mobile apps with complex functionalities, including synchronous video players, multiple themes for whitelabel solutions, and comprehensive content management systems. Skilled in creating robust CI/CD pipelines (Codemagic, GitHub Actions) and implementing security measures aligned with backend infrastructures. Proficient in native plugin development across Kotlin, Java, Swift, and JavaScript. Educational background includes ongoing studies in Analysis and Systems Development, with strong problem-solving and team leadership abilities.

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Seniority Senior (5-10 years)
Location Brazil
Flutter 4yr.
GCP 4yr.
Firebase 4yr.
Go
TensorFlow
Laravel
Node.js
GCE
OpenAL
...

* Software engineer with over 4 years of experience in mobile app development, specializing in Flutter and proficient in Dart, Kotlin, and Go. * Strong technical expertise in building robust backend systems, REST APIs, and has a keen interest in Blockchain technology within the GCP ecosystem. * Demonstrated ability in web development using modern technologies including HTML, CSS, JavaScript, React, and NextJs. * Active contributor to open-source projects, enhancing the value of platforms like APIDash and GoCoin. * Holds a Bachelor's and a Master's degree in Computer Engineering, underpinning a solid understanding of software development practices. * Recognized for building impactful mobile applications such as Edutive for education and Racha for addiction management.

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Seniority Middle (3-5 years)
Location Bamenda, Cameroon
Dart 4yr.
Kotlin 4yr.
Swift 4yr.
Java 4yr.
JavaScript
Android APIs
Socket.io
Agora
GraphQL
Swagger
FDD
TDD
Figma
Git
Github Actions
Notion
Postman
Zeplin
XCode
...

Software engineer with over four years of mobile development experience across multiple platforms and a strong educational background including a BSc Honors in Information Technology. Proficient in languages such as Dart, Kotlin, Swift, Java, JavaScript, and TypeScript, and skilled in frameworks like Flutter, Jetpack Compose, and SwiftUI. Experienced in working with tools like Xcode, Android Studio, and GIT. Has a portfolio of quality applications and a proven track record in full software development life cycle (SDLC), test-driven development (TDD), and collaborating with cross-functional teams to deliver apps with effective UI design and robust security measures.

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Seniority Middle (3-5 years)
.NET 6yr.
Xamarin 5yr.
Flutter 4yr.
Dart 4yr.
Firebase
DesignPatterns 4yr.
ASP.NET 3yr.
AI
C#
Java
ADO.NET
ASP.MVC Pattern
Android SDK
HTML
XAML
XML
JSON
ML
Microsoft SQL Server
MySQL
PostgreSQL
SQL
SQLite
Azure
Adobe XD
Figma
Android
RESTful API
Web API
iOS
OOP
SOLID
database
.NET Maui
SDK
SQL databases
SQL/NoSQL
UI
...

- Commercial Experience with Mobile Development since 2016 in the banking, insurance, health and beauty industries, education and e-commerce - Senior and Lead Developer, able to organize the process of building an application both by himself and by a team - 4+ years of commercial experience with Flutter and Dart - 5+ years of experience with Xamarin - Significant experience in development with Firebase - Proven experience with start-ups in early stages of growth - Extensive experience of work with international companies in Canada, the UK, Saudi Arabia, the UAE, Egypt, Jordan, Kuwait - Experience in MVP and architecture development of complex mobile applications such as mobile banking and e-commerce platforms. - Experience with SDKs and APIs - AI/ML enthusiast - Excellent soft skills scaled up in work in mixed teams in international companies, open-minded, trouble-shooter, great communicator and experienced mentor - Upper-Intermediate English - Native Arabic - Available ASAP

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Seniority Senior (5-10 years)
Location Cairo, Egypt
Java
Kotlin
XML
Android APIs
SQLite
Material UI
Firebase Cloud Messaging
Agora
API
Google API
RESTful API
Stripe
Asana
Atlassian Trello
Slack
BitBucket
Github Actions
GitLab CI
Responsive Design
Remote config
Sendbird
...

Software engineer with over 8 years of experience in Android app development and team leadership, proficient in Java and Kotlin. Expertise in application architecture, UI/UX design, database management with SQLite, Room, Firebase, and Firestore. Skilled in project management tools like ASANA, Trello, and Slack. Extensive knowledge in REST APIs, third-party libraries, and payment gateway integration. Proven track record of delivering projects on time using Agile methodologies while implementing best practices in code review, unit testing, and maintaining app performance. Technical acumen is demonstrated through the successful delivery of diverse projects spanning digital wallets, e-commerce, and logistics.

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Seniority Senior (5-10 years)
Location Ahmedabad, India
Facebook Auth 5yr.
Dart 5yr.
Java
Kotlin
Crashlytics
Material UI
MapBox
SQLite
Agora
API
Google Maps API
Atlassian Trello
Slack
BitBucket
Github Actions
GitLab CI
Responsive Design
Teamwork
...

Software Engineer with over 5 years of experience in Flutter development for iOS and Android platforms. Adept at the Dart language, the engineer excels in creating high-performance and visually appealing apps with responsive design. Their technical expertise includes MVC/MVVM patterns, state management, and implementing deep/dynamic linking. Proficient in integrating with various databases like SQLite and Firebase and utilizing PM tools like Trello and Slack. The candidate has a strong background in developing and managing complex projects, evidenced by their history of timely project deliveries and effective client communications. Their significant role in development, testing, and deploying applications with third-party integration and unit/widget testing underlines their comprehensive skill set in software engineering.

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Seniority Senior (5-10 years)
Dart 4yr.
HTML5 4yr.
Postman
Facebook Auth 4yr.
Android APIs 3yr.
API 3yr.
iOS 3yr.
FDD 2yr.
Electron 1yr.
Power BI 1yr.
Banking 1yr.
Bloc 1yr.
Riverpod 1yr.
VBA
Lottie
retail
...

Software engineer with extensive experience in mobile development for platforms including iOS and Android, specializing in Flutter. Skilled in upgrading and optimizing applications, evidenced by migrating a codebase from Flutter 2.5.0 to 3.3.0 within 3 months and implementing a dark mode theme. Demonstrated expertise in integrating bank APIs, adding savings features, and transitioning from Provider to Riverpod for state management. Proven ability in using Lottie for smooth animations and developing responsive designs, alongside proficiency in Dart, HTML5, and Postman API technologies. Holds a Bachelor's degree in Electrical and Electronics Engineering, underlining a strong engineering foundation. Co-founded a health-tech startup and contributed to e-commerce, Fintech, AI, and health sector projects, showcasing a breadth of industry exposure and technical versatility.

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Seniority Middle (3-5 years)
Location Ibadan, Nigeria
Dart 2yr.
Swift
Kotlin
TypeScript
CI/CD 2yr.
AI
FDD
IBM Rational ClearCase
MetaMask
SharePoint
Unit Testing
Unix
Chat GPT
...

The engineer in question manifests proficiency in mobile application development, with extensive experience in the creation and enhancement of complex platforms within the Nigerian market. Possessing demonstrated expertise in Flutter and Dart for cross-platform development and a grasp of native API interfacing using Swift and Kotlin, the engineer has effectively employed TypeScript for cloud function management on Firebase. Additionally, the engineer has skilfully set up CI/CD with Fastlane and integrated real-time communications with websockets, contributing to the delivery of robust, user-friendly applications. Maintaining a strong focus on performance and stability, the engineer leverages tools such as Firebase Crashlytics and Flutter's performance profiling. Moreover, the engineer's background encompasses a Computer Science degree, providing a sound theoretical foundation underpinning their practical skills. With a portfolio featuring innovative features like AI-based verification, video calling via the Agora SDK, and advanced in-app transaction functions, the engineer’s technical acumen ensures a performance-focused and user-centric development approach.

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Seniority Senior (5-10 years)
Location Nigeria
Facebook Auth 4yr.
Android APIs 4yr.
iOS 4yr.
Identity Server
Firebase Realtime Database
OneSignal
Adobe XD
Figma
Agile
Scrum
TDD
GraphQL
Code Review
Unit Testing
Communication Skills
Design Thinking
Github Actions
Jira
NFT
Team Collaboration
...

Software engineer with 4+ years of experience specializing in mobile app development, including UI/UX design, with expertise in Flutter and integrations with Firebase. Highlights include leading the development of mobile platforms for companies like Boostmate Inc and PDA Funds, improving app performance, and maintaining high coding standards. Proven track record in applying Agile methodologies, performing unit and E2E testing, and employing tools such as Git/GitHub for project management. Holds a computer science degree from Kwame Nkrumah University of Science and Technology, emphasizing this candidate's strong theoretical and practical foundation in software engineering.

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Seniority Middle (3-5 years)
Location Accra, Ghana
iOS 4yr.
Android APIs 4yr.
Dart
Flutter
API
...

Seasoned software engineer with a Bachelor's degree in Computer Engineering and 4+ years of experience in app development. Proficient in Dart, Swift, Obj-C, Java, and skilled in MySQL. Delivered a patient aid app using Flutter & iOS with coreML integration. Played pivotal roles in agrotech projects, contributing to social media feed functionality and offline accessibility. Expertise extends to Flutter plugin development, enhancing data syncing, and deep linking. Solid background in SDLC, agile methodologies, and CI-CD practices, leading to efficient and effective project execution.

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Seniority Middle (3-5 years)
Location Mumbai, India
Facebook Auth 2yr.
Dart 2yr.
Crashlytics
AWS SES (Amazon Simple Email Service)
GraphQL
...

['Skilled Flutter developer with 2+ years of experience crafting mobile applications.', 'Proficient in Dart, Flutter, Firebase, and a suite of modern development tools and frameworks.', 'Proven track record of working in collaborative settings, emphasizing teamwork and communication.', 'Educational background includes specialization in music, demonstrating a diverse skill set and discipline.', 'Contributed to various projects such as a social network for dog owners, a plant-growing engagement app, and loyalty management apps.', 'Adept at implementing state management solutions using Bloc, GetX, and Redux, ensuring scalable and maintainable code.', 'Technical versatility demonstrated by integrating REST APIs, Google Maps, Node.js, .NET, and working with AWS services.']

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Seniority Middle (3-5 years)
Location Ukraine
Unreal Engine
Team Leadership
API
FDD
Laravel
Memcached
Redis
AWS
Azure DevOps
Google Docs
CI/CD
Waterfall
Research Skills
Unix
Money Exchange
...

Software engineer with over 8 years of experience specializing in payment systems, e-commerce integrations, and both frontend and backend development. Proven track record in developing plugins for WooCommerce and Magento, creating Shopify payment applications, and constructing APIs for complex systems. Holds a B.Sc in Computer Science with a focus on Software Engineering. Proficient in PHP, Java, Go, Python, JavaScript, Bootstrap, and Tailwind CSS. Experienced in PostgreSQL, MySQL, CI/CD, and implementing monitoring and caching solutions.

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Seniority Senior (5-10 years)
Location Kenya
React 5yr.
AWS 4yr.
Node.js
PHP
Python
CSS3 6yr.
HTML5 6yr.
JavaScript 5yr.
TypeScript 5yr.
Bootstrap 4 5yr.
Material UI 5yr.
Tailwind CSS 5yr.
Next.js 5yr.
React Native 5yr.
Redux-Saga 5yr.
MongoDB 5yr.
PostgreSQL 5yr.
Prisma 5yr.
GCP 5yr.
Adobe Photoshop 5yr.
Git 5yr.
GraphQL 5yr.
Postman 5yr.
Scrum 5yr.
Sentry 5yr.
...

Full Stack Engineer with over 4 years of professional experience and a strong educational background in Media Technologies and Leadership. Skilled in front-end and back-end development using technologies such as React.js, Node.js, Next.js, TypeScript, PHP, and Python, complemented by expertise in databases like MongoDB and PostgreSQL. Proficient in a variety of modern tools and platforms including AWS, Google Cloud, Docker, and CI/CD practices. Recognized for transforming business requirements into scalable digital solutions and optimizing web applications for improved SEO and performance.

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Seniority Senior (5-10 years)
React
React Native
TypeScript
Node.js
Express
...

Software engineer with a Bachelor's degree in Computer Software Engineering and 9 years of full-stack development experience. Expertise in React, React Native, Node.js, TypeScript, and AWS, with a record of developing SaaS fintech platforms and efficient CI/CD pipelines. Proficient in performance optimization, microservices architecture, and Web3 integrations. Adept in Agile methodologies, TDD, and advanced search implementations.

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Seniority Senior (5-10 years)
Location Gdansk, Poland
React Native
React
JavaScript
Kotlin
Swift
TypeScript
Android Studio
Async Storage
Expo
Formik
i18next
Mobx
React Navigation
Redux
Redux-persist
Redux-Saga
Redux-toolkit
Styled components
Socket.io
Storybook
Firebase
Realm
GCP
Microsoft Visual Studio Code
WebStorm
XCode
Axios
Google Maps API
Jest
React-testing-library
EAS
Native Gesture Handler
React-hook-form
React Native Paper
Reanimated
...

- Software Engineer with a Computer Science and Software Engineering background, bringing over 7 years of experience in developing mobile and web applications. - Proficient in a spectrum of technologies, including React, React Native, TypeScript, JavaScript, and modern libraries and frameworks like Redux and Expo. - Demonstrated leadership skills as a Team Lead, with a track record in managing development cycles, CI/CD pipelines, and team coordination to ensure timely delivery of high-caliber solutions. - Adept in various domains such as IoT, utility infrastructure, and gambling. - Strong emphasis on agile methodologies, clean code principles, and cutting-edge technology integration to build scalable and performance-centric applications.

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Seniority Architect/Team-lead
Location Poland
Schedulers
Call Handling
Customer Service
Data Entry
Social Media Management
...

Professional secretary and Virtual assistant with over 3 years of industry experience across various sectors including education, entertainment, health, and business. Demonstrated abilities in managing schedules, handling communications, and providing remote administrative support to enhance operational efficiency. Proficient in research, data entry, social media management, and a suite of other administrative tasks. Offering a 10% discount to the first new client, highlighting a commitment to providing valuable and affordable services.

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Seniority Middle (3-5 years)
Location Abuja, Nigeria
JavaScript 7yr.
React Native 7yr.
TypeScript 5yr.
Dart 1yr.
React 7yr.
React Navigation 4yr.
Detox 4yr.
Storybook 3yr.
Expo 2yr.
Responsive Design 2yr.
GatsbyJS 1yr.
Facebook Auth 1yr.
Unit Testing 1yr.
React Native Reanimated 1yr.
...

Software engineer with 7 years of experience in developing business applications, finance, gambling, and educational software. Proficient in JavaScript, TypeScript, and Dart with extensive expertise in React, React Native, and Flutter. Proven track record in implementing scalable, high-performance mobile and web applications with a mastery of state management libraries Redux, Redux-Toolkit, Redux-Saga, and a suite of React Native libraries. Strong foundations in Computer Science and adept in cloud services including AWS and Firebase, integrated development environments, and adopting CI/CD with Fastlane. Recognized for improving system performance through render optimization and building automated, responsive UIs across various platforms. Actively engaged in continual learning, code reviews, testing, and adhering to best software development practices ensures delivery of mission-critical projects.

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Seniority Senior (5-10 years)
Location Poland
React Native
React
JavaScript
TypeScript
CSS
HTML5
LESS
Pug
SASS
Mobx
React Hooks
React-Saga
React Thunk
Redux
Firebase
AWS Amplify
API
RESTful API
BitBucket
GitHub
GitLab
macOS
Ubuntu
Windows
Stylus
...

- A skilled Mobile Developer with 7+ years of experience - Strong knowledge of Javascript, TypeScript, React.js, React Native, Redux (Thunk, Saga), MobX, and much more - Has strong critical thinking skills, the ability to navigate various data environments, hands-on technical ability in data, and a drive to understand clients’ business - Connects with Product and Engineering teams to produce instrumentation to generate insightful measurements on new and existing products - Works across departments and collaborates with business managers, systems architects, engineering delivery teams, project managers, QA, and operations teams - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Ukraine
Dart 5yr.
Flutter SDK 5yr.
Kotlin
Java
OOP
Swift
ASP.NET Core Framework
Entity Framework
Identity Server
Crashlytics
Flutter Web
Kotlin Coroutines
Apache Hive
Google Analytics
Firebase Realtime Database
PostgreSQL
3D Modelling
Figma
Atlassian Trello
Jira
AVFoundation
UIKit
Clean Architecture
Design patterns
Kanban
Scrum
Waterfall
Facebook Auth
RESTful API
Swagger
Fastlane
Git
HTTP
WebSockets
Linux
macOS
Windows
MVP
Postman
Bloc
Data Structures
Dio
Firebase services
MVI (Model-View-Intent)
Preferences
Provider
Rx js
...

-Over 5 years of commercial experience in software development - Experienced have deep knowledge and versatile skills in building cross-platform apps for iOS and Android. -Proficient in Dart, Kotlin, and Java, Flutter SDK - Technical toolkit: OOP, Data structures and algorithms, Asynchrony and Isolates, Flutter SDK, MVC, MVP, MVI, Clean Architecture, Provider, Freezed, BLoC, Design patterns, Material Design, Firebase services (Auth, Firestore Realtime Database), Multithreading Principles, REST API, Coroutines, RX, Flame, Flame Audio, Google Analytics/Crashlytics, Flutter Web, Freezed, Swagger Generator. - Extensive experience in software quality assurance - Experience includes a variety of projects in different industries such as Social Media, Education and Recruitment Management Systems, and many others.

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Seniority Senior (5-10 years)
Location Kyiv, Ukraine
Flutter SDK
Dart
Kotlin
Swift
Java
Objective-C
Android APIs
Android SDK
Crashlytics
Material UI
Apache Hive
Firebase
MongoDB
ObjectBox
SQFLite
SQLite
Facebook Auth
GraphQL
Atlassian Trello
Jira
Bash
Clean Architecture
Kanban
Scrum
SOLID
TDD and BDD
Waterfall
Codemagic
GitLab CI
Figma
Git
SVN
HTTP
WebSockets
macOS
Oracle Solaris
Windows
Mock
QA Automation
Unit Testing
MVP
Web3
Bloc
HiveQL
OOP/MVC
WPF MVVM
...

-A software engineer with over 6 years of commercial experience with deep knowledge and versatile skills in building cross-platform apps for iOS and Android. -Proficient in Dart, Kotlin, Swift, and Java languages, as well as a wide range of Flutter SDK tools. - Deep expertise in Flutter development within diverse domains like Social Media, IoT, Crypto industry, and Travel. - Extensive experience in software development and software quality assurance. - Successful experience in working in large teams at all stages of the development cycle, from initial concept to release and subsequent support. - A results-driven problem solver with a strong academic background, holding a Master's degree in Software Engineering.

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Seniority Senior (5-10 years)
Angular
Ionic
.NET
JavaScript
Ruby
TypeScript
NestJS
Node.js
CSS
HTML
Flutter
Mobx
NgRx
RxJs
Ruby on Rails
AWS ElasticSearch
Firebase
MySQL
PostgreSQL
SQL
AWS
Atlassian Trello
Jira
Git
GraphQL
Jest
Zeplin
SSR
...

- Web and Mobile app developer with 7+ years of experience in the IT industry - Skilled in front-end and back-end development, API integration, optimization, and refactoring. - Proficient in building scalable and high-performance applications using Angular and associated technologies. - Experienced in working with databases, server-side rendering, and cloud platforms such as AWS and Firebase. - 6 years of experience with Angular - 3+ years of experience with Ionic - Upper-Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Cherkasy, Ukraine
Kotlin 5yr.
Java 5yr.
Erlang
MVP
MVVM+Rx
Android APIs 5yr.
Gson 5yr.
OrmLite 5yr.
Realm 5yr.
PHP
ButterKnife
Symfony
MySQL
SQLite
AWS
Firebase Cloud Messaging
Asana
Atlassian Trello
Jira
ClickUp
Git
Mockito
Billing App
EventBus
...

Senior Android Engineer with over a decade of experience in building commercial applications, expertly versed in Android SDK, Kotlin, Java, and a variety of frameworks and libraries such as Retrofit, Moxy, Dagger 2, and Jetpack compose. Highly skilled in object-oriented architecture, patterns, and network communication protocols like MQTT and HTTP/HTTPS, with proficiency in Binary Data Protocols and general algorithm construction. Demonstrates a solid track record in leading teams through the full lifecycle of application development, from requirement gathering to deployment on the Google Play Store. Holds a Ph.D. in Computer Sciences and excels in a fast-paced agile environment, bringing a wealth of knowledge in architecture solutions, API design collaboration, and advanced Android UI/UX. Recognized for leadership, impeccable time management, and effective communication skills alongside a commitment to code quality and software excellence.

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Seniority Expert (10+ years)
Facebook Auth 5yr.
Bloc
Flutter-Redux Webpack
XCode
Observer
Android APIs
React Native
Node.js
Vue.js
3D Modelling
Backend
...

Skilled and organized software engineer with 5 years of experience specializing in iOS and Flutter development, evidenced by applications successfully launched on the App Store. Holds a Master's degree in Logistics Management, reflecting a strong analytical and problem-solving background. Possesses a comprehensive skill set including Flutter, Xcode, MVC Design Patterns, localization, and REST API integration, complemented by proficiency in Swift, Dart, OOP, and Git. Familiar with collaboration tools such as Jira, Youtrack, and Trello, and has a track record of working effectively in team settings to deliver high-quality software solutions. Demonstrates expertise in full app life cycle, from concept to deployment, as well as maintaining up-to-date knowledge of modern app development practices.

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Seniority Middle (3-5 years)
Location Uzhgorod, Ukraine
Java 8yr.
Zend 8yr.
Android APIs 8yr.
C
Kotlin
Python
ButterKnife
Dagger2
JSON
okHttp
RxJava2
Glide
leakcanary
Picasso
Retrofit2
XML
Google Analytics
Mixpanel
MySQL
Realm
SQLite
Google Maps API
Android TV
Atlassian Trello
Jira
Bamboo
Gradle
BitBucket
GSM
JUnit
Zeplin
fcm
Flask-restful
Giphy
Smack
...

With over 8 years of expertise as an Android application developer, this engineer boasts a robust proficiency with Java, Kotlin, and C++. They have a strong foundation in computer science, having graduated with a specialist degree in Applied Mathematics. Accumulating experience through substantial roles in mid-level to senior, team-lead, and consulting positions, they have successfully executed more than seven long-term projects and numerous short-term engagements. Technical skills include Android SDK, Android NDK, Firebase, Retrofit2, and Dagger 2. They are adept in methodologies such as SDLC and employ engineering principles across different technologies and tools like Android Studio, Git, and Jira. Their noteworthy projects, like the multi-platform HBO GO and the financial service integration in PayKey, underline their capability to deliver complex applications, highlighting an extraordinary blend of technical acumen and practical experience.

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Seniority Senior (5-10 years)
Location Warsaw, Poland
VBScript 7yr.
Swift 7yr.
Objective-C 7yr.
SwiftUI
C
Chrome Extensions
Socket.io
Identity Server
Nightwatch.js
NPM
React
Zend
Google Analytics
Microsoft Azure Synapse Analytics
3D Modelling
Figma
Sketch
Asana
Atlassian Confluence
Atlassian Trello
Jira
YouTrack
Bitmovin
CocoaPods
Core Data
Core Image
Core Location
MapKit
Viper
Eclipse
Microsoft Visual Studio Code
XCode
Git
Gitflow
GraphQL
PayPal API
RESTful API
MVC
MVP
Postman
Unit Testing
Zeplin
Apple Pay
Chrome Dev Tools
CSAI
DeepLinking
Digital rights management (DRM)
MVVM+Rx
Segment
SSAI
SVOD/TVOD
...

Senior Developer brings 7+ years of robust experience in software development, specializing in TV and mobile platforms. Proven mastery of BrightScript, Swift/SwiftUI, and Objective-C, with sound knowledge of C++, JavaScript, and MySQL. Displays a solid track record of delivering scalable projects, proficient in TV (Roku, tvOS) and mobile application (iOS) development, including DRM-protected and ad-supported content. Demonstrates competence in various design, architectural patterns, and integration of modern technologies such as In-App Purchases and Push Notifications. Adept at multiple programming paradigms, including MVC, MVP, MVVM, VIPER, and an advocate for agile methodologies. Exhibits strong communication skills, a goal-driven attitude, and an ability to work effectively in collaborative environments. Brings a deep understanding of the software development life cycle, with a Bachelor's in Physics from Uzhgorod National University, supporting a significant technical foundation.

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Seniority Senior (5-10 years)
Location Ukraine
Java
Kotlin
Android SDK
Room (Android Jetpack)
Coil
Glide
Kotlin Coroutines
Ktor
Retrofit 2
JSON
RxJava2
XML
Firebase
Realm
SQLite
Android
API
RESTful API
Stripe
JetPack
Clean Architecture
MVVM
Espresso
JUnit
GitHub
WebSockets
...

- Experienced Android Engineer with 7 years of commercial experience and a strong track record of delivering innovative and robust mobile applications. - Proficient in Kotlin and Java, with expertise in MVVM and MVP architectural patterns. - Skilled in refactoring and improving existing codebases, implementing new features - Extensive knowledge of integrating SDKs like Here Maps, Firebase, Glide, and Realm. - Has experience working on navigation and banking applications. - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Vilnius, Lithuania
Magento 1 15yr.
Adobe XD 2yr.
CI/CD 2yr.
RESTful API 2yr.
GraphQL 2yr.
headless 2yr.
Messaging Queues 2yr.
Middleware 2yr.
MSI 2yr.
Kotlin
Ant Design
XSLT
Flutter
Ionic
React Native
Business Analysis
Data visualization
Prototyping
FDD
UML
Project Management
Xamarin
BIM 360
Emerging Tech
Sales & Marketing Copywriting
...

- Full-stack Developer with 15 years of experience in Magento platform and Adobe ecosystem - Experienced in e-commerce platform development and deployment for large infrastructure projects - Proficient in Continuous Integration and Continuous Delivery, API integrations, and ERP systems - Strong communication and collaboration skills, detail-oriented and highly motivated - Magento Certified Developer Plus with team lead experience - Skilled in Magento 2.x, Magento 1.x, headless development, REST API, GraphQL API, React, VueJS, Salesforce, SRE, DevOps, GitLab, Composer, CI/CD, IAAC, Docker, Vagrant, Laravel, Microservices, and Sentry - Worked with international brands, participated in put-to-market processes, and expanded into multiple markets

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Seniority Expert (10+ years)
Location Kyiv, Ukraine
Android 7yr.
Android SDK 7yr.
Java 7yr.
Kotlin 7yr.
Cicerone 7yr.
Hilt 7yr.
Retrofit 7yr.
Room (Android Jetpack) 7yr.
Crashlytics 7yr.
Dagger 7yr.
Navigation 7yr.
RxJava 7yr.
Realm 7yr.
Firebase Cloud Messaging 7yr.
Firebase Analytics 7yr.
Google Maps API 7yr.
Atlassian Trello 7yr.
Jira 7yr.
Clean Architecture 7yr.
Kanban 7yr.
MVVM 7yr.
Waterfall 7yr.
Linux 7yr.
Windows 7yr.
Mockito 7yr.
WebSockets 7yr.
Jetpack Compose 1yr.
Cicerone navigation
Architecture Components
Dagger2
Data binding
DataBinding
Glide
Gson
Kotlin Coroutines
leakcanary
RxJava2
Firebase
Facebook API
Facebook SDK
Applanga
BitBucket
Git
MVC
Scrum
Figma
MVP
Sentry
sockets
PlacesSDK
Protobuf
...

- Over 7 years of commercial experience in IT as an Android Developer; - Proficient in Java and Kotlin programming languages; - Strong knowledge of Object-Oriented Programming (OOP) principles; - Experienced in using Design patterns such as MVP and MVVM; - Skilled in using Android SDK and various libraries/frameworks including RxJava, Jetpack Compose, Dagger, Hilt, Room, Navigation, Google Maps, Firebase Analytics, Firebase Crashlytics, and Firebase Cloud Messaging; - Familiar with Clean Architecture and Retrofit for building robust and scalable applications; - Proficient in using source control systems like GIT and tracking systems like Jira and Trello; - Experienced in Agile development methodologies such as SCRUM and Kanban; - Upper-Intermediate level of spoken and written English; - Successfully delivered projects in various domains including in-store and online shopping, retail and distribution, taxi services, sports, and job search; - Strong attention to detail, logical thinking, and result-oriented mindset.

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Seniority Senior (5-10 years)
Location Germany
Objective-C
Swift
RxSwift
...

Highly skilled iOS developer with over 6 years of valuable commercial experience in Swift and Objective-C. With a strong background in mobile app development, has honed his expertise in crafting efficient and user-friendly iOS applications. With attention to details and problem-solving skills, can deliver high-quality applications.

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Seniority Senior (5-10 years)
Location Ukraine
Swift
Objective-C
C++
...

iOS developer with 6 years experience in iOS development of native applications using mainly Swift/Objective-C. Also have experience with C++ mostly related to 3D graphics development and algorithms integration. Have experience with entire application development process with published applications on the AppStore. Able to take responsibilities in: - developing application system design that fits client requirements. - direct requirements resolutions with the customer - organize team-work and set-up all necessary tools for development

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Seniority Senior (5-10 years)
Location Ukraine
Java 6yr.
Android 5yr.
Kotlin 3yr.
Adaptive design 5yr.
Retrofit 5yr.
Firebase 5yr.
GitHub 5yr.
Google material design guidlines 5yr.
Google Play Console 5yr.
Android Jetpack 3yr.
Dagger 3yr.
MVC 3yr.
MVVM 3yr.
Kotlin Coroutines 2yr.
Timber 2yr.
Debugging tools 2yr.
Leak Canary 2yr.
Niddler 2yr.
Profiler 2yr.
JavaScript
PHP
Python
Threads
Material UI
Transitions
Android Biometric Auth
Animated Vector Drawables
ARCore
Hilt
Koin
Room (Android Jetpack)
Coil
Crashlytics
Glide
Navigation
Picasso
Push notifications
RxJava
Appsflyer Analytics and
Mixpanel
PostgreSQL
Realm
SQL
SQLite
Appsflyer
API
Facebook API
Facebook SDK
Kotlin Flow
RESTful API
BitBucket
Git
Github Actions
Bluetooth
Clean Architecture
Gradle
Jenkins
MVP
UI/UX
Architectures Components
Braze
Broadcasts
Build Types
Content Provider
Environmental and Position sensors
Face and BarCode recognition
Fragments
Google In-app Purchases
Google ML Kit
Gradle scripts
Integrating CI/CD
Internal deeplinks
Java Servlet API
Java Socket
JsonMotion
Keystore
MVI (Model-View-Intent)
NFC
Object Animations
Onelink
ProGuard
R8
release and publishing
Voip/VideoIP using Sinch and Zoom
WCAG
...

- Over 5 years of expertise as an Android developer specializing in Kotlin. Experienced in leading and collaborating with development teams to ensure successful project delivery. - Skilled in introducing new functionalities, transitioning projects from Java to Kotlin, and adhering to WCAG accessibility standards. - Proficient in software architecture, quality assurance, and agile methodologies. Also experienced in Java software engineering, web development, and instructional roles. - Comprehensive understanding of Android UI/UX principles, clean architecture, and a range of libraries and tools. - Solid proficiency in Java, Kotlin, RxJava, Coroutines, Android Jetpack, Firebase, REST APIs, and various development and debugging tools. - English proficiency at an upper-intermediate level. Available to start immediately.

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Seniority Senior (5-10 years)
Location Poland
iOS
Objective-C
Swift
Auto Layouts (Figma)
Crashlytics
Fabric
KVC
KVO
Push notifications
RxSwift
Realm
SQLite
AFNetworking
Alamofire
Core Animation
Core Data
Core Graphics
Core Location
Core Motion
MapKit
SwiftUI
Table View
URLSession
Bluetooth
Design patterns
Kanban
OOP
Scrum
Waterfall
Git
SVN
Google Maps API
GraphQL
Jira
Redmine
Unit Testing
XCode
ARC
Firebase push notifications
GCD
MagicalRecord
Popovers
SDWebImage
Storyboard
UICollectionView
UIWebView
...

- Experienced iOS developer with 7+ years of commercial experience in IT; - Proficient in Swift and Objective-C programming languages; - Strong knowledge of object-oriented programming (OOP) and design patterns; - Skilled in using iOS technologies such as UIKit, SwiftUI, Xcode, Core Data, Core Animation, and more; - Familiar with various architecture patterns like Clean-Swift, MVC, MVP, MVP-C, MVVM+C; - Experienced in working with REST APIs using URLSession and Alamofire; - Proficient in using Git and SVN for source control; - Familiar with agile development methodologies like SCRUM and Kanban; - Strong attention to detail and ability to work in a team environment; - Excellent communication skills and ability to work under pressure; - Fluent in spoken and written English at an upper-intermediate level.

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Seniority Senior (5-10 years)
Location Ukraine
Kotlin
Android
...

Working as a Mobile App Developer with 10 years of experience.

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Seniority Senior (5-10 years)
Location Ahmedabad, India
React Native
...

Certainly! Here's a more detailed summary for you, written in the first person:My name is Sami and I am a software engineer with 7 years of experience in the IT industry. During my career, I have specialized in developing applications using React Native, MERN, and MEVN technologies. These skills allow me to create high-quality, scalable, and user-friendly applications that meet the needs of my clients.Throughout my experience as a software engineer, I have been involved in all stages of the development process, from the initial concept and design phase to implementation and testing. I am familiar with various software development methodologies, including Agile, and have used them to effectively manage projects and meet deadlines.In addition to my technical skills, I am also a strong communicator and collaborator. I believe that clear communication and teamwork are essential to successful project delivery. I am passionate about staying up-to-date with the latest technologies and techniques in the field, and I am always looking for ways to improve my skills and knowledge.

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Seniority Senior (5-10 years)
Location Lahore, Pakistan
Payment Gateways 5yr.
WordPress 5yr.
Laravel 7-9 3yr.
Unity 2yr.
Ant Design 1yr.
...

Developer

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Seniority Expert (10+ years)
Location Caracas, Venezuela
Android 8yr.
Kotlin 4yr.
Coil
Kotlin Coroutines
iOS
MVVM
NUnit
Zeplin
PWA
...

- 8+ years of experience with Android Development - 4+ years of experience with Kotlin - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Portugal
Android
Java
Kotlin
Android SDK
Retrofit
Crashlytics
Kotlin Coroutines
Agile
MVVM
API
Kotlin Flow
JetPack
Bamboo
BitBucket
GitHub
...

- 4 years of commercial experience with Kotlin - Intermediate English

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Seniority Middle (3-5 years)
Location Tashkent, Uzbekistan
iOS
Objective-C
Swift
Auto Layouts (Figma)
Ulkit
Crashlytics
Fabric
KeychainSwift
PromiseKit
Push notifications
RxSwift
Firebase messaging
Realm
SQLite
AFNetworking
Alamofire
ARKit
AVFoundation
Core Data
Core Location
SceneKit
StoreKit
SwiftUI
Viper
Architecture and Design Patterns
Kanban
MVC
MVVM
Scrum
Singleton
Atlassian Trello
Jira
Redmine
CI/CD
Facebook SDK
Google Maps API
Google SDK
PayPal API
RESTful API
Stripe
Fastlane
Firebase SDK
Git
macOS
MVP
Storyboards
WebRTC
XMPP
Charts
Multithreading
...

- 7+ years of commercial experience in IT - Experience in developing applications using Swift, Objective-C - Excellent knowledge in OOP - Experience in using Design patterns - Good logical thinking, self-learning, high level of responsibility - Responsible, hard-working, result-oriented, creative and communicable, team player - Good attention to details - Advanced English - Availability starting from 31/07/2023

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Seniority Senior (5-10 years)
Location Portugal
Android
Java
Kotlin
Android SDK
Android Studio
Jetpack Compose
Retrofit
Room (Android Jetpack)
Crashlytics
Dagger
Kotlin Coroutines
okHttp
RxJava
Spring
Kibana
Firebase
Agile
Design patterns
SOLID
Citrix
API
GraphQL
Swagger
JetPack
Atlassian Confluence
Jira
Miro
Slack
BitBucket
Git
GitLab
Charles Proxy
JUnit
NUnit
Postman
Figma
InVision
UX
iOS
Product Management
SonarQube
...

- As an accomplished Android Engineer with six years of experience, I have a proven track record of developing high-quality Android applications. My passion lies in diving deep into the core development of a project and leaving my technical mark. I am eager to keep pace with the rapidly changing mobile world, and I embrace challenges with enthusiasm - My journey as a Software Engineer began during high school, and I have continued to grow and develop my skills ever since. I am dedicated to working hard and driving innovation in all of my projects. I am also a personable and friendly team player, and I thrive on the opportunity to collaborate with others and meet new people - Overall, I am committed to delivering exceptional results and making a positive impact on any project I work on - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Ukraine
Flutter
Dart
Java
Kotlin
Android SDK
Laravel
Material UI
SalesForce Workflow
Firebase
Firebase Realtime Database
FireStore
Realm
Google Services
Atlassian Trello
Jira
Redmine
Clean Architecture
Kanban
MVC
Scrum
CMS
e2e testing
Golden Tests
Snapshot tests
Unit Testing
Git
GitHub
Linux
macOS
Windows
MVP
Sentry
...

- 8+ years of commercial experience in IT - Experience in developing applications using Dart and Java - Excellent knowledge in OOP - Experience in using Design patterns (MVVM, Bloc, Clean Architecture) - Experience in using SQLite - Good logical thinking, hard-working, self-learning, result oriented - Good attention to details. - Upper-Intermediate English - Availability starting from 01.08.2023

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Seniority Senior (5-10 years)
Location Germany
Android
Kotlin
Java
CameraX
Hilt
Jetpack Compose
Koin
Retrofit
Room (Android Jetpack)
Dagger2
RxJava
DataBinding
Kotlin Coroutines
LiveData
Moshi
Firebase
GreenDao
Realm
Clean Architecture
MVVM
Facebook API
Google API
GraphQL
Kotlin Flow
Gradle
Linux
macOS
Windows
MVP
Postman
WebRTC
XMPP
Box2D
Multithreading
MVI (Model-View-Intent)
...

- 7+ years of commercial experience in IT - Experience in developing applications using Java, Kotlin - Excellent knowledge in OOP - Experience in using Design patterns (MVP, MVVM) - Experience in using SQLite - Good logical thinking, hard-working, self-learning, result oriented - Good attention to details. - Upper-Intermediate English - Availability starting from 01/08/2023

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Seniority Senior (5-10 years)
Location Lviv, Ukraine
Android
C
C++
Java
JavaScript
Kotlin
Python
Android SDK
Material UI
Firebase
Firebase Realtime Database
Atlassian Trello
Jira
Redmine
Clean Architecture
Design patterns
Kanban
MVC
MVVM
Scrum
Waterfall
Git
SVN
Linux
macOS
Windows
MVP
...

- 12 years of commercial experience in IT - Experience in developing applications using Kotlin, Java - Excellent knowledge of OOP - Experience in using Design patterns (MVVM, MVI, MVP) - Experience in using SQL/NoSQL databases - Good logical thinking, hard-working, self-learning, result oriented - Good attention to details. - Upper-Intermediate English - Availability starting from ASAP

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Seniority Senior (5-10 years)
Location Spain
Android
OpenCV
Android Studio
Dagger2
Ktor
Firebase
Fastlane
FigJam
Figma
Jenkins
Jira
Miro
Slack
MVVM
MVI (Model-View-Intent)
Teamwork
...

- I am a self-taught Android developer with a passion for building scalable architecture and writing easily maintainable (deletable) code. - I am a big fan of DI frameworks like Dagger, Anvil, or Hilt. - I build apps out of passion outside of working hours, but lately, I have been exploring Ktor on the backend side and working on fully Compose Android applications. - From time to time, I also like to tinker with Figma. - I am passionate about the latest tech, hardware and security.

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Seniority Senior (5-10 years)
Location Ukraine
Kotlin
Java
...

Experienced and self-motivated android developer with 3+ years of experience in developing and supporting applications in production. Worked with applications for education, social sphere and sports. He is a fast learner, eager to learn and share knowledge among co-workers. He works on each project with dedication and creativity.Available in 2 weeks Location: Ukraine

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Seniority Middle (3-5 years)
Location Cherkasy, Ukraine
Swift
Objective-C
KeychainSwift
KVO
Firebase
Realm
Banking
Agile
DRY
Kanban
KISS
Scrum
SOLID
Alamofire
CalendarKit
CocoaPods
Core Data
MapKit
RealmSwift
SnapKit
Swinject
UIKit
CI/CD
Figma
Git
iOS
IOS SDK
RESTful API
Macaroni
XCode
Jira
Slack
UI testing
Unit Testing
GCD
Google Service
Social SDK
Socket
SPM
SwiftHash
WatchKit
...

- 7+ years experience with iOS; - Deep skills working with Swift and Objective C; - Good skills working with Firebase; - Experience working with Google services; - Solid knowledge of SOLID and DRY; - Good abilities working with fintech and banking projects; - Experience in testing; - Upper-Intermediate English.

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Seniority Senior (5-10 years)
Location Ukraine
iOS
Objective-C
Swift
Linkedin
Push notifications
Firebase
Realm
Banking
Agile
Scrum
Alamofire
AVFoundation
CalendarKit
CallKit
CocoaPods
Cocoa Touch
Core Data
Core Graphics
Core Location
MapKit
SnapKit
TestFlight
UIKit
Asana
Jira
BitBucket
Git
CI/CD
Facebook API
IOS SDK
RESTful API
Twitter API
Figma
XCode
sockets
UI testing
Unit Testing
GCD
Multithreading
...

- 6+ years of experience in iOS development; - In-depth knowledge of iOS SDK; - Experience working with fintech and cryptocurrency projects; - Good knowledge of the development of different mobile projects; - Experience working with Objective-C; - Deep abilities with Swift; - Good skills working with Firebase; - Experience in UI/UX implementation; - Good skills in maintenance and testing; - Upper-Intermediate English.

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Seniority Middle (3-5 years)
Location Ukraine
Java 8yr.
Kotlin 3yr.
C
C++
ADB
Android NDK
Android SDK
Android Studio
ButterKnife
Dagger
JDK Tools
JSON
okHttp
RxJava2
Glide
Gson
leakcanary
Picasso
Retrofit2
HTML
XML
Mixpanel
Firebase
MySQL
MySQL Workbench
OrmLite
Realm
SQL
SQLite
Analytic Skills
Android
Android TV
API
Facebook SDK
Google Maps API
RESTful API
Apache NetBeans
Eclipse
IntelliJ IDEA
Atlassian Trello
Jira
YouTrack
BitBucket
Git
GitHub
Gradle
GSM
HTTP
HTTPS
XMPP
JUnit
Zeplin
Linux
macOS
Windows
Atlassian
Dalvik Debug Monitor Server (DDMS)
Fabrictools
fcm
Giphy
Google Cast
Leanback
Okio
Sensey
Smack
...

- Having over 7+ years of experience in developing native mobile and TV applications for the Android platforms - Deep knowledge of the Android Framework significantly increased my technical and soft skills. - Successfully accomplished above seven long-term projects at the middle, senior, and team-lead developer positions, and tech consultant. - Also participated in many short-term, bug fixing, feature adding, and library developing projects. - Have strong mathematical and computer science background - Upper-Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Ukraine
Java
Kotlin
Kotlin Coroutines 3yr.
Android Jetpack
Android SDK
Koin
Room (Android Jetpack)
Architecture Components
Crashlytics
Dagger2
Data binding
Glide
Navigation
Push notifications
Retrofit2
RxJava
Socket.io
Firebase
Firebase Realtime Database
FireStore
Realm
A/B Testing
Authentication
Unit Testing
Analytic Skills
Google API
Stripe
CI/CD
GitLab CI
Fastlane
Google Play
MVP
MVVM
WebSockets
Detekt
fcm
Firebase App Distribution
HMS
Ktlint
LruCache
Multi-module apps
Remote config
...

- Android Software Engineer with 7 years of experience in native android development - 3+ years of team-leading experience - Upper-Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Zaporizhia, Ukraine