Hire Vetted Design and Creative Engineers at Upstaff - Page 3

All vetted software engineers you need to build AI, Web3, and data Products.
  • Dedicated Full-time commitment for long-term or Time& Material for shorter or ongoing support
  • Europe, Israel, LatAm, United States, Asia geography coverage
  • Remote and hybrid engagement
  • Trial period, no termination fees or hidden costs for transparent and risk-free onboarding.
Dart 4yr.
Bloc 4yr.
Crashlytics 4yr.
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Senior Software Engineer with a solid 4 years of experience delivering mobile apps, including both the creation of new applications and enhancement of existing solutions. Core competencies involve Flutter development, with strong proficiency in Dart, and experience with various architectural and design patterns. Accomplishments include leading app development for diverse domains such as E-Government, E-Commerce, and FitTech. Technical strengths are underpinned by expertise in memory profiling, performance tuning, implementing authentication mechanisms using JWT, and creating plugins. Skilled in SDLC and software development best practices, with a significant emphasis on distributed tracing techniques to elevate app reliability.
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Middle
Tashkent, Uzbekistan
Dart 2yr.
Facebook Auth 2yr.
Clean Architecture
MVVM
Packet Tunnel Provider
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Software engineer with specialized expertise in Flutter development for multi-platform applications. Experienced in leading cross-functional teams and optimizing app performance, with hands-on experience in architecture and advanced project management systems. Technical proficiency in Dart, along with familiarity in C++, JavaScript, TypeScript, and a variety of Flutter frameworks and architectures. Proven record in developing high-traffic, secure applications with a focus on user experience, contributing to substantial growth rates in user base and sales. Strong foundation in computer science with a biotechnology and pharmacy degree, underpinned by effective problem-solving skills showcased through the completion of 200+ Leetcode problems.
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Middle
Alexandria, Egypt
Java 4yr.
RESTful API 3yr.
Android App Development 2yr.
Spring Boot 2yr.
SQL 2yr.
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Software Engineer with over 4 years of experience at Tacktile Systems, excelling in full-stack Java and Android development, database optimization, and AI-enhanced productivity. Proficient in developing secure, performant RESTful APIs, and dynamic web reporting tools. Innovates using AI tools such as ChatGPT and Cursor AI to expedite development processes. Demonstrates expertise in Java, Spring Boot, RabbitMQ, SMTP2GO, Sentry, JSP, AJAX, JavaScript, and Android SDK, Code Refactoring, MVVM architecture ensuring robust and scalable software solutions.
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FDD
JavaScript
React Native
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Seasoned Mobile App Developer with over a decade of experience, specializing in UI/UX design, native mobile app development, and AI-driven applications. B.Tech in IT from Delhi Technical University and possesses significant freelance success with 10,000+ hours on Upwork. Entrepreneurial background includes co-founding two startups, with a notable exit from a peer-to-peer lending platform. Strong technical proficiencies in JavaScript, React Native, and web development with certification in Full Stack Web Development. Adept in enhancing product value through integration of advanced features like 3D animations and Bluetooth device connectivity. Demonstrated expertise in SDLC and modern development practices, catering to a diverse clientele with over 30 mobile app projects delivered.
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WCAG
Quality Assurance
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This engineer brings a robust background in web accessibility and compliance, with a strong focus on creating inclusive and user-friendly digital products. Key highlights include proficiency in conducting comprehensive accessibility audits to ensure WCAG 2.1 AA and Section 508 compliance, as well as substantial hands-on experience managing the full defect lifecycle for accessibility issues. Beyond technical skills, this candidate shows a keen ability to drive organizational change through the creation of end-to-end accessibility processes, evidenced by the successful remediation of thousands of accessibility defects. This profile stands out for a combination of technical expertise within the web compliance domain, a proven track record of leading accessibility initiatives, and a thorough understanding of the accessibility requirements that shape exceptional UI/UX design.
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Senior
Kissimmee, United States
RESTful API
JavaScript
TypeScript
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Seasoned Product Manager and former Research Staff with extensive IT experience, specializing in accessibility and adept in modern programming languages and tools. Notable for leading the development of assistive technology products and contributing to inclusive technology initiatives. Proven experience in API optimization, problem-solving in server-client communication, and enhancing application security using Azure Key Vault. Strong educational foundation with a Bachelor of Engineering in Computer Science and an MBA in Systems. Recognized for technical leadership, strategic project management, and analytical prowess in high-stakes environments.
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Expert
Hyderabad, India
WCAG
Usability tests
Azure
SLDS
ARIA
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- Accessibility SME with DHS Trusted Tester and NVDA certifications and an IAAP CPWA credential, possessing over a decade of accessibility consulting experience. - Deep expertise in WCAG, Section 508, and ADA compliance, as well as in utilizing and testing with major assistive technologies like NVDA, JAWS, VoiceOver, and TalkBack. - Extensive background in developing and implementing accessibility standards, including Microsoft Accessibility Standards (MAS) and design systems for inclusive user experiences. - Proficient in web, mobile, and desktop application testing across various platforms (iOS, Android, Windows, macOS) and in leveraging assistive technologies for accessibility testing. - Proficient in front-end technologies including ARIA, HTML, CSS, JavaScript, and skilled in conducting both manual and automated testing with tools such as axe, Lighthouse, WAVE. - Holds a B.A. in Home Economics with an A.S. in Computer Science, reflecting a strong foundation in both technology and systematic problem-solving.
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Expert
United States
React Native 5yr.
React 5yr.
TypeScript 5yr.
JavaScript 5yr.
Redux 5yr.
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Accomplished Software Engineer with 5 years of in-depth experience in mobile and software development primarily focused on React Native, ReactJS, and TypeScript. Demonstrated proficiency in leveraging advanced JavaScript technologies such as Redux and ES6 to build robust mobile applications. Led a technical team and mentored engineers in creating market-centric apps and websites, ensuring adherence to best practices in software development. Key project contributions include the implementation of react-native-firebase for notifications and analytics, and development of complex features for barcode and RFID reader applications. The engineer's academic background in Information Technology fortifies their technical expertise, and a penchant for continuous learning in mobile programming underpins their evolving mastery of the software engineering domain.
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Senior
Yerevan, Armenia
SDLC 3yr.
Node.js 3yr.
JavaScript 3yr.
SQL 3yr.
NoSQL 3yr.
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Versatile software engineer with a Bachelor's degree in Computer Engineering and Technology eager for defense from United Methodist University in Mozambique. Showing 3 years of real-world experience with expertise in software development and technical support. Proficient in contemporary web and mobile development, this engineer has successfully built and maintained applications using Node.js, JavaScript, and optimized SQL and NoSQL databases. Technical acumen extends to mobile app creation using React Native and Ionic, as well as comprehensive data analysis utilizing Power BI. Recognized for contributing to collaborative product design and exhibiting strong problem-solving skills. Skilled in an array of programming languages and tools including Python, JavaScript, C++, Git, and more; this candidate stands out for their dynamic approach and adaptability to new technologies, ready to bring value through strong software development practices.
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Junior
Maputo, Mozambique
HTML
CSS
JavaScript
PHP
Bootstrap 3
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A dynamic Full Stack Developer and Video Editor with over 2 years of experience in web development and video editing. Expertise in creating responsive websites and fine-tuning video content utilizing an array of technologies including HTML, CSS, JavaScript, PHP, and Python. Proven ability to manage e-commerce projects like 360cartmall.com, showcasing capabilities in UI/UX and back-end development. Agile in developing solutions with modern frameworks and tools such as React, Visual Studio, and XAMPP. Holds a Bachelor’s in Software Engineering, underpinning a solid technical foundation. Adept at translating complex requirements into user-centric designs and functionalities, reflecting a strong background in SDLC and software development best practices.
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React Native 6yr.
React 1yr.
UI/UX Design
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Accomplished Senior Software Engineer with expertise in mobile development, including a leading role in architecting and optimizing a housing support application, ensuring an enhanced user experience. Bring years of experience with a strong focus on ReactJS and React Native across multiple organizations, elevating OPS dashboards, modernizing legacy code, and contributing to a variety of successful app releases. Holds a BSc in Computer Science from the British University in Egypt, marrying technical skills with solid theoretical knowledge. Renowned for implementing new technologies, refining development standards, and delivering high-quality software solutions. Proven capability in the full app lifecycle management and team leadership, aiming to drive efficiency and innovation in software development.
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Senior
Riyadh, Saudi Arabia
WordPress 9yr.
Shopify 9yr.
Preact 7yr.
Next.js 6yr.
Web3 6yr.
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Accomplished Senior Web & Mobile App Developer with a robust educational foundation, holding a Bachelor of Science in Computer Science from the University of California, Berkeley. Possesses extensive experience with a tenure from July 2020 to August 2023 at Tech Innovators Inc., where contributions led to a 30% increase in user engagement for a million-user cross-platform app. A tenure as a Full-Stack Developer at Creative Solutions Ltd. from June 2016 to February 2020 resulted in a marked 25% client satisfaction increase. Expertise in a broad spectrum of technologies including WordPress, Shopify, PHP, React.js, Node.js, Android, React Native, and cloud platforms like Google Cloud and AWS. Strong ability in web scrapping, API integration, and database optimization. Proven track record in leading projects, mentoring teams, and fostering a culture of continuous improvement.
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Senior
California, United States
JavaScript 5yr.
TypeScript 2yr.
Angular 2yr.
React 2yr.
Vue-bootsrap 2yr.
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Software engineer with extensive experience in front-end and back-end development, proficient in Core JavaScript and DOM API as well as Angular, React, and Vue. Valuable contributor to cross-functional teams with a track record of optimizing performance and streamlining SDLC through Agile methodologies. Recognized for delivering high-quality, user-friendly software solutions that exceed client expectations and contribute to business growth. Holds a First Class Honours BSc in Information Technology and Business Information System from MiddleSex University and an Advanced Diploma in Software Engineering from Aptech, distinguished by technical rigour and a practical approach to problem-solving. Employs a combination of in-depth technical expertise in the JavaScript ecosystem, software development best practices, and continuous professional development to drive impactful innovations.
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Senior
Zebbug, Malta
Swift 3yr.
Kotlin 2yr.
SwiftUI
Viper
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Software Engineer with 3.5+ years of experience, specializing in iOS development with Swift and Android development with Kotlin. Proficient in leveraging frameworks like UIKit, SwiftUI, CoreData, AVFoundation, and technologies like MVVM, VIPER, and Clean Swift. Demonstrates strong proficiency in application performance, memory management, and advanced photo editing application development. Holds a Computer Engineering degree and has a solid foundation in coding principles and software development practices. Worked on notable projects involving video streaming, e-commerce applications, and organizational management tools.
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WordPress 3yr.
Elementor 2yr.
Wix
WooCommerce API
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Senior Web Developer with extensive experience in WordPress, WIX, and e-commerce system development. Proficient in converting designs (Figma) to functional WordPress sites and optimizing websites for SEO and usability. Demonstrated expertise in front-end development, including HTML, CSS, and JavaScript, coupled with a deep understanding of Elementor and WooCommerce. Proven track record in delivering web projects across various industries, with a focus on enhancing user experience and meeting business requirements.
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Java 15yr.
Flutter 5yr.
Kotlin 5yr.
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- Mobile software developer with over 15 years of extensive experience in designing, architecting, and developing mobile applications for Android and iOS platforms using Flutter, Kotlin, Java, and React Native. - Skilled in Clean Architecture, cross-platform solutions, and native development. - Proven track record of leading mobile development teams for fintech, investment, and subscription-based platforms. - Expertise in overseeing end-to-end project execution, including architecture design, feature implementation, testing, and delivery. - Proficient in building SDKs for hardware sensors, smartwatches, and other devices, with capabilities such as BLE communication, data parsing, OpenCV integration, and real-time data synchronization. - Specialized in developing healthcare and assistive communication applications with features like speech-to-text, word prediction, handwriting recognition, and customizable UI/UX for individuals with disabilities. - Experience in building interactive games for Android devices and smartwatches using frameworks like libGDX and AndEngine, with added functionality for integrating external sensors. - Strong expertise in optimizing application UI/UX, working with images and video streams, and enhancing application performance through efficient coding practices. - Skilled in integrating cloud services (AWS, Dropbox API, Parse) and building backend solutions for data storage, synchronization, and real-time updates. - Hands-on experience in implementing automated testing, improving code quality, and ensuring seamless application performance across devices.
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Facebook Auth 6yr.
Dart 6yr.
Swift 6yr.
UIKit 6yr.
SwiftUI
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Seasoned Senior Mobile Developer with 6 years of experience, specializing in native iOS (Swift, UIKit, SwiftUI) and cross-platform (Flutter) mobile app development. Demonstrated expertise in full lifecycle project management, architecting robust app solutions with a focus on the Blockchain, Transportation, Education, HealthCare, and E-commerce sectors. Proficient in leveraging modern development tools, such as Alamofire, Core Data, and Combine. Effective at leading and mentoring teams, directly engaging with clients, and contributing to high-quality software with experience in SDLC, MVVM, Agile methodologies, and CI/CD pipelines. Recognized for refactoring and optimizing codebases for scalability and performance.
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Senior
Lviv, Ukraine
React Native 3yr.
Mobx 3yr.
Front-End Web Development 3yr.
Mobile Application Development 3yr.
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With over three years of professional experience, the React Native developer has a strong foundation in mobile application development, demonstrating expertise in state management with MobX. They possess a track record of creating cross-platform mobile apps with a focus on responsive, seamless user experiences and have tackled projects including e-commerce and uptime monitoring solutions. As a holder of a Bachelor's degree in Computer Engineering and currently pursuing a Master's degree in Software of Computer Systems and Networks, the engineer is grounded in a solid theoretical understanding of the field. Their proficiency extends to handling platform-specific challenges and employing varied React Native packages for innovative problem-solving. Engagements in roles ranging from CEO of a start-up to front-end and mobile development showcase a breadth of leadership and technical skills.
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Middle
Azerbaijan
Figma
HTML
CSS
Remote Work Fit
Design systems
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I am an experienced UI/UX Designer with a focus on Figma, HTML and CSS. I have solid expertise in creating complex design systems and user-friendly interfaces for various digital products.In my 2+ years of designing user focused interfaces, I have gained experience in carrying out user research, creating wireframes & prototypes, coming up with responsive designs and working with cross-functional teams.I am academically backed with a BSc in Marketing from the University of Nigeria, with additional training in UI/UX Design from Dev and Design HQ and Genesys learnable.
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Middle
Enugu, Nigeria
Figma
Adobe Photoshop
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- Has extensive experience as a Lead Designer, managing multiple projects simultaneously while mentoring junior designers. - His portfolio includes designing complex interfaces for industries like cryptocurrency platforms, AI-powered iOS apps, legal tech services, and B2B platforms. He's responsible for setting UX/UI design direction, ensuring high design standards, and collaborating with developers to ensure smooth implementation. - His work emphasizes cross-device optimization, user engagement through analytical tools, and a focus on seamless performance across mobile and desktop platforms. - Design Tools: Proficient in Figma, Photoshop, Illustrator - Animation: Skilled in web design animation and beyond
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Expert
Kosice, Slovakia
UX
UX research
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- Experienced UX Researcher with 5 years in mixed-methods research, data science, and software engineering. Leverages a technical background to advocate for user needs in innovative B2C products. - Expertise in leading end-to-end user research practices, with a proven track record in SaaS product development for diverse sectors, including hosting, finance, and social impact. - Spearheaded quantitative and qualitative research, including surveys, user interviews, and A/B testing, leading to data-driven decision-making and product improvements. - Successfully collaborated with cross-functional teams, including product managers, developers, and designers, to integrate user insights into product roadmaps, resulting in enhanced customer-centric features and strategic product offerings. - Proficient in using research tools and technologies such as Looker, Pendo, SUPR-Q evaluation, and natural language processing to conduct comprehensive user research and analysis. - Experienced in implementing design thinking methodologies and conducting ideation workshops to drive innovation in product development. - Native English.
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Senior
New York, United States
Swift 7yr.
Go
OpenVPN
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- Motivated software engineer with 7 years of iOS development experience (Swift, SwiftUI, and Objective-C). - Over 30 App Store project launches for iOS/macOS, including VPN, OpenVPN protocols, and deploy VPN servers) - Comfortable in both sole developer and team player roles, team-lead experience - Back-end experience with GoLang (last two years) - Upper-Intermediate English - Available to start ASAP
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Senior
Kyiv, Ukraine
Adobe suite 5yr.
Figma 5yr.
Ant Design 5yr.
Research Skills
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- Award-winning Product UI/UX Designer with 5+ years of experience at top-tier product companies in Ukraine. - Specializes in designing intuitive and visually captivating user interfaces for web and mobile apps in the e-commerce and SaaS domains. Proficient in the entire design process, from ideation and wireframing to prototyping and iterative refinement. - Upper-Intermediate English. - Start ASAP
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Senior
United States
Swift 5yr.
UIKit 5yr.
SwiftUI
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- Over 5 years of diverse experience in IT and expertise in Swift and various iOS frameworks in various fields (Social Chats/Communication, online language learning, healthcare, food & delivery). - Basic experience with network protocols & vpn (several months projects) - Available ASAP (Deferment from mobilisation till summer 2026) - C1 English
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Senior
Lviv, Ukraine
Swift 7yr.
Objective-C 7yr.
IOS SDK 7yr.
SwiftUI
Kotlin
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A seasoned iOS developer with over 7 years of experience, specializing in the Apple ecosystem. Proficient in Swift, Objective-C, SwiftUI, and Kotlin, with strong expertise in reactive programming, databases, networking, and multithreading. This engineer is adept in implementing various architectural patterns such as MVVM, Singleton, and Dependency Injection. Their technical background is solidified by a Master's degree in System Engineering and Computer Science. Their professional portfolio spans several domains, including Security, Healthcare, and FinTech, showcasing a versatile approach to app development. Key contributions include developing CI/CD pipelines, performing comprehensive testing, and successful App Store deployment. Strengths include advanced knowledge of networking protocols, database management, and multiparadigm programming, making the engineer a well-rounded candidate for complex iOS projects.
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Senior
Lviv, Ukraine
FDD 10yr.
Swift 5yr.
Objective-C
Java
Architecture and Design Patterns
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- Software engineer with a decade of experience, skilled in a multitude of programming languages including Swift, Objective-C, and Java. - Expert in developing for iOS with in-depth knowledge of frameworks such as UIKit, SwiftUI, CoreData, and an adept understanding of BLE technology. - Led the maintenance and feature development of a well-known iOS VPN and Password Manager application, focusing on optimizing performance and implementing new features. - Utilized MVC architecture alongside Objective-C and Swift to enhance the functionality of the VPN and Password Manager application. - Played a key role in refactoring the VPN application codebase to improve efficiency and maintainability. - Leveraged Alamofire for network management within the VPN application, ensuring reliable and secure connections. - Collaborated closely with the development team to maintain the high quality of the VPN application's user experience and performance. - Upper-Intermediate English
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UI design 5yr.
Figma 5yr.
UI/UX
Material UI
Web Design
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have over 5 years experience in design. Apart from work, my passion is art, I used to be an artist in the past. My experience includes projects of varying complexity, especially designing CRM systems, creating an exclusive user interface and developing UX. I would be happy to join a team that works on projects of various levels and complexity. I am open and easy-going, looking for a cool team to create amazing results together!
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Senior
Kosice, Slovakia
Swift 2yr.
IOS SDK 2yr.
XCode 2yr.
Architecture and Design Patterns
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Software Engineer with 2.6 years of experience in iOS application development, specializing in Swift and Objective-C. Proficient in building applications from concept to deployment with a strong background in working with iOS frameworks, RESTful APIs, third-party libraries, and XCode/Swift coding and debugging. Demonstrated abilities in architecture design, including MVC and MVVM patterns, and incorporating advanced features such as socket integration, push notifications, Google Maps, and payment gateway integration. Contributions to projects like an appointment booking app for a tattoo studio, an international e-commerce app, a mortgage application, and a taxi booking platform showcase technical versatility and a commitment to delivering engaging user experiences. Holds a Bachelor of Computer Applications and is currently pursuing a Diploma in Computer Applications, underpinning a robust foundation in computer science and software development practices.
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FDD
Swift
Objective-C
UIKit
SwiftUI
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Software engineer with extensive experience in native iOS development, skilled in Swift and Objective-C, and a strong background in Computer Science from Chandigarh University. Notable achievements include leading 5+ projects solo and earning the 'Plobal Apps Rising Star 2024' award. Proficient in UIKit, SwiftUI, and various other iOS technologies, the engineer has a proven track record of contributing to scalable mobile applications, while expertly employing tools such as Git, Firebase, and Realm. With effective communication skills reflected in successful client interactions and a dedication to Agile methodologies, they have demonstrated the ability to drive projects to successful completions.
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Senior
Mohali, India
Webflow 1yr.
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- 7+ years in design and 1+ year of commercial experience with Webflow- Strong understanding of typography, layout, color theory, and user interface (UI) design principles, and experience applying them to web design- Experience creating and managing Webflow templates and style guides for consistent and efficient design implementation- Intermediate English
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Senior
Cherkasy, Ukraine
Dart 3yr.
Swift 3yr.
JavaScript 1yr.
Kotlin
Rust
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Software engineer with extensive experience in mobile development, particularly with Flutter on HealthTech and FinTech products. Strong proficiency in Dart, Swift, JavaScript, Kotlin, and Rust, alongside deep familiarity with technologies such as Flutter, iOS, Android, Firebase, and AWS S3. Demonstrated excellence in applying engineering principles and practices such as Agile, OOP, SOLID, and design patterns like MVVM and MVC. Proven track record of boosting application performance and user retention through strategic optimizations and analytics integration, along with experience in leading teams and enhancing code quality through thorough code reviews and automated testing. Proficient in CI/CD and testing frameworks, adept at crafting responsive layouts, and capable of implementing effective SDLC methodologies.
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Senior
Nairobi, Kenya