Upstaff Developer Profile Directory

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.
HTML5
CSS3
JavaScript
...

Software engineer with 10+ years of experience in UI development and a strong proficiency in web technologies including HTML5, CSS3, JavaScript, and modern JS frameworks such as Angular and React.js. Proven track record of leading technical teams and managing end-to-end development cycles using Agile methodologies. Skilled in tackling complex problems with microservice APIs, Spring Boot, and cloud integration with AWS. Recognized for enhancing product user experience and system architecture through rigorous debugging and testing practices. Holds a B.Tech in Computer Science and multiple Coursera certifications. Advanced knowledge of dev ops tools and version control systems, excelling in fast-paced environments.

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Seniority Expert (10+ years)
Location India
JavaScript 5yr.
TypeScript 5yr.
HTML 5yr.
CSS 5yr.
SCSS 5yr.
...

Software engineer with over 5 years of experience specializing in full-stack development, with a track record of improving performance metrics in social and AI products. Expertise in front-end technologies, including React, Next.js, and TailwindCSS, complemented by back-end proficiency in Node.js, Express, and GraphQL. Demonstrated success in building robust applications and APIs, optimizing payment processing for high-transaction platforms, real-time systems, and database management. Past projects have led to tangible improvements such as a 45% increase in job completion rates and significant enhancements in system reliability across distributed architectures.

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Seniority Senior (5-10 years)
Location India
NativeJS 15yr.
Play Framework 5yr.
Firebase Cloud Messaging
CI/CD
...

- Senior Mobile Engineer with 17+ years of experience, focusing on cross-platform mobile application development and SDKs. - Expertise in various mobile frameworks (Capacitor, React, React Native, Ionic, Flutter) and native (Swift, Objective-C, Kotlin, Java). - Proficient in CI/CD practices (Fastlane, GitHub Actions, Jenkins), automated deployments, push & messaging tech (APNS, FCM, Courier). - Strong background in backend and API development, including REST, GraphQL, serverless architectures, along with performance optimization. - Demonstrated ability in fostering agile methodologies and working with multi-timezone teams to drive project success. - Holds a BSc in Computer Software Engineering from Sofia University, reflecting a strong technical foundation.

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Seniority Expert (10+ years)
Location Sofia, Bulgaria
Dynatrace 6yr.
...

Dynatrace-Certified Expert – Application Performance Monitoring & ConsultationProfessional Certified consultant with over 6 years of high-impact APM experience, supporting financial institutions, telecom companies, and large enterprises. My qualifications and recent client successes make me an ideal fit for your long-term consultation project.Key Offerings: • Certified in Dynatrace Professional modules (certification PDF attached). • Expert in setup and deployment of Dynatrace (SaaS/Managed) across enterprise sites. • Advanced dashboard customization, alert optimization, and integration with ITSM tools (ServiceNow, Jira). • Deep knowledge of Real User Monitoring (RUM), Synthetic Monitoring, RCA, logs/data migration, and FinOps. • Extensive hands-on work with Prometheus, Grafana, OpenTelemetry, Kubernetes, and AWS. • Strong SRE background: expert in chaos engineering, resilience testing, auto-remediation.

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Seniority Expert (10+ years)
Location Jaipur, India
Python
CI/CD
IaC
Terraform
GCP
...

Experienced DevOps Engineer with a proven track record in scalable infrastructure design, developer tooling, CI/CD, and cloud cost optimization. 10+ years cross-functional leadership in high performance environments. Expert in Python, cloud technologies (GCP, AWS, OCI), and infrastructure as code (Terraform, Ansible). Certified Kubernetes Administrator with strong skills in orchestration and observability systems. Reduced operational expenses significantly through strategic cloud migrations and efficient infrastructure management.

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Seniority Expert (10+ years)
Location Spain
LCDP 5yr.
Play Framework 5yr.
Swift 5yr.
Objective-C 5yr.
Kotlin
...

Senior Mobile Application Engineer with 17+ years of experience specializing in cross-platform mobile applications and SDKs. Expert in a wide range of frameworks and languages such as Capacitor, React, Next.js, React Native, Ionic, Flutter, Swift, Objective-C, Kotlin, Java, and proficient in CI/CD practices including Fastlane and GitHub Actions. Demonstrated ability in optimizing app performance, implementing push notification engines, and deploying production apps. Strong focus on secure, scalable API integration and backends, with a history of reducing project timelines through reusable components. Committed to agile methodologies and collaborative team environments, this engineer reflects a superior blend of technical prowess, industry insight, and hands-on experience across fintech, automotive, and healthcare sectors.

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Seniority Expert (10+ years)
Laravel
PHP
Vue.js
React
MySQL
...

Seasoned Full Stack Laravel Developer with a Bachelor of Science in Computer Science and over a decade of experience in crafting scalable web applications and SaaS solutions. Proven track record in utilizing Laravel 5–11, PHP 8.3, and modern front-end technologies such as Vue.js and React, combined with a strong foundation in databases and DevOps. Demonstrates extensive knowledge of RESTful and GraphQL API integration, microservices architectures, and cloud-based deployment, which includes expertise in AWS services, Docker, and Kubernetes. Instrumental in achieving significant performance gains by optimizing code and queries, exemplifying technical prowess in leading development teams, promoting best practices in software engineering, and delivering projects with high business impact.

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Seniority Expert (10+ years)
Python 10yr.
Django REST framework 10yr.
JavaScript 10yr.
React 7yr.
TypeScript 5yr.
...

Senior Software Engineer with a BSc in Computer Science and over 10 years of experience specializing in Python, Django, JavaScript, React, TypeScript, and cloud platforms like AWS and Azure. Demonstrated ability in creating scalable microservice architectures and developing high-performance backend services, with a keen eye for front-end user experiences. Proficient in deploying applications using CI/CD pipelines and proficient in database management with systems such as PostgreSQL. Successfully evolved ML workflows in FinTech, eCommerce, and AI, enhancing operations and boosting performance.

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Seniority Expert (10+ years)
Location Adelanto, United States
Java 7yr.
Spring Boot 7yr.
RESTful API 7yr.
microservices 7yr.
Git
...

Software Engineer with 7+ years of backend development experience, specializing in Spring Boot, REST APIs, and microservices, with a proven track record in the academic, enterprise, and telecom domains. Notable for scaling a microservice architecture to support 1.8M users, leading to $5M ARR, and demonstrating technical leadership through significant code base contributions and feature developments. Proficient in Java 17+, SQL, Git, Docker, Jenkins, Gradle, Grafana, Spring Boot, Redis, Websockets, AWS, Kubernetes, PostgreSQL, MySQL, and Oracle DB, the Engineer has a strong foundation in computer science with a BTech degree from VIT University. Recognized for exceptional problem-solving and code quality improvements, the Engineer also shared expertise through mentoring and streamlined cross-functional team collaboration.

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Seniority Senior (5-10 years)
Location India
JavaScript 5yr.
TypeScript 5yr.
Python 5yr.
Node.js 5yr.
React 5yr.
...

A Senior Full Stack Engineer with a Master's in Information Technology from the University of Central Punjab, distinguished by strong expertise in JavaScript, TypeScript, Python, and notable experience in AI integration. Over 7 years of hands-on engineering practice across various roles in programming and team leadership. Proficiency in full-stack web development, scalable backend architecture, and cloud computing underscored by an excellent track record with Node.js, React.js, Next.js, and NestJS. Possesses extensive knowledge of cloud platforms like GCP and Vertex AI and demonstrates a deep understanding of Agile methodologies, CI/CD pipelines, and DevOps practices. Recognition for effectively leading development teams, mentoring junior engineers, and consistently delivering high-quality software solutions.

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Seniority Expert (10+ years)
Location Lahore, Pakistan
C/C++/C#
ASP.NET Core Framework
Entity Framework
Dapper ORM
T-SQL
...

Full-stack .NET developer with extensive experience in building scalable server solutions and responsive front-end designs. Strong foundation in C# and ASP.NET Core development, supplemented by proficiency in Entity Framework Core and Dapper for optimal data access. Versatile with front-end development using React and TypeScript, ensuring high interoperability within complex CRM and e-commerce ecosystems. Proven ability to optimize system performance under high loads, integrate various APIs, and maintain CI/CD workflows. Supported by a Master's degree in Informational Technologies and a keen understanding of software engineering methodologies, bringing a valuable combination of technical acumen and practical experience to any team.

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Seniority Senior (5-10 years)
Location Khmelnytskyi, Ukraine
C/C++/C#
ASP.NET Core Framework
Entity Framework
Dapper
React
...

Engineer with extensive expertise in full-stack .NET development, proficient in implementing complex server-side APIs, CRM, and e-commerce platforms. Advanced knowledge in a range of technologies including ASP.NET Core, React, Redux, Akka.NET, SignalR, EF Core, Dapper, SQL Server, AWS, and Azure. Demonstrated success in migrating legacy systems to .NET 6.0, optimizing data access, and ensuring high system reliability. Holds a Bachelor's degree in Computer Sciences and excels in integrating real-time data analytics with robust, scalable database designs. Backed with a strong foundation in software engineering practices and principles, the engineer is distinguished by their ability to deliver high-quality, maintainable, and performance-focused business solutions, having a tangible impact on operational efficiency and user engagement.

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Seniority Senior (5-10 years)
C/C++/C# 9yr.
ASP.NET Core Framework 5yr.
Azure
Vue.js
...

With over 9 years of experience, this Senior Full-Stack .NET Developer offers a robust technical portfolio with proficiency in C#, ASP.NET Core, Entity Framework Core, and a variety of frontend technologies including ReactJS and AngularJS. This professional has a track record of delivering scalable, fault-tolerant enterprise solutions, demonstrating extensive expertise in microservices architecture, cloud services (Azure, AWS), and DevOps practices (CI/CD pipelines). Their education includes a Master's degree in Informational Technologies of Design from Khmelnytskyi National University, reinforcing a strong foundation in computer science principles. An accomplished engineer with tangible contributions to FinTech, EdTech, and eCommerce - they have played a pivotal role in building CRM platforms, optimizing data management, and implementing advanced features that improve operational efficiency and user experience.

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Seniority Senior (5-10 years)
Location Khmelnytskyi, Ukraine
Python 5yr.
TypeScript 5yr.
C/C++/C#
Robot Framework
Dart
...

Software engineer with a strong focus on AI integration and full-stack web solutions. A proven track record in building AI-powered tools and automating core processes, coupled with expertise in cross-platform development and containerization. Extensive experience with Python, Docker/Nginx, and deploying reliable APIs. Actively pursuing a Bachelor's in Computer Science and excelling in hands-on roles such as Software Research Engineer. Achievements include reducing log review time by 70% and improving customer agents' response rate from 45% to 85%. Adept in languages like C/C++, JavaScript/TypeScript, and possesses advanced skills in frameworks like Django and ReactJS.

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Seniority Middle (3-5 years)
Location Lagos, Nigeria
AI/ML
ML
Python
...

Results-driven AI/ML Engineer who transforms data into actionable business insights. Led development of recommendation systems that increased user engagement by 35% and fraud detection models that reduced financial losses by $2M annually. Expert in building scalable ML infrastructure and cross-functional collaboration, with experience managing full ML lifecycle from research to production deployment. Combines strong technical expertise in Python, PyTorch, and cloud technologies with business acumen to deliver measurable ROI through AI solutions.

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Seniority Senior (5-10 years)
Location United Kingdom
C/C++/C# 8yr.
Python 2yr.
Boost
Qt/C++
...

Experienced C++ Software Engineer with 8+ years in designing high-performance, distributed, and multithreaded systems. Specialized in backend development with Kafka and SQL. Increased throughput by 20% and reduced memory usage by 10% in mission-critical systems for finance and healthcare. Passionate about concurrency challenges and building reliable distributed architectures.

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Seniority Senior (5-10 years)
HTML5 6yr.
CSS3 6yr.
Bootstrap 4 6yr.
JavaScript 5yr.
API 4yr.
...

Software engineer with over 5 years of experience in web design and development, specializing in both front-end and back-end technologies. Demonstrated success in developing databases, user interfaces, and implementing new features driven by user feedback. Proven ability to lead software projects to fruition, resulting in a 99.9% uptime rate and significant improvements in user engagement. In-depth knowledge of front-end development with skills in HTML5, CSS3, Bootstrap 4, JavaScript, jQuery, React, and Ajax. Back-end expertise with Node.js, Laravel, PHP, and database management using MYSQL, MongoDB. Adept in SEO and graphic design tools, leveraging Ahrefs, SEMrush, Grammarly, Canva, and Adobe Photoshop to enhance online presence and user experience. Strong educational background with a B.Ed in Education/Mathematics and professional training in Software Engineering. Technical skills are complemented by effective communication and fast learning ability.

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Seniority Senior (5-10 years)
Location Lagos, Nigeria
Facebook Auth
Crashlytics
JavaScript
Slim
LCDP
...

An established Senior Flutter Fullstack Developer with over 20 years of experience in software engineering, boasting a strong technical background with a B.Sc. in Mathematical Physics. This engineer has specialized in cross-platform app design and development since 2011, first with the JavaScript framework Titanium and later adopting Flutter/Dart in 2020. Skilled in a variety of programming technologies, notably iOS, Android, and web development, with proficiency in frontend and backend technologies such as HTML/CSS, JavaScript, Firebase, node.js, and Python. Experienced in leading small development teams, this developer brings advanced knowledge in state management, API integration, and full-circuit backend system creation. The developer's commitment to quality and expertise in a diverse range of software methodologies and architectures is demonstrated by a history of successful projects in multiple business sectors, including fintech, healthcare, education, and animation.

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Seniority Expert (10+ years)
Location Winchester, United Kingdom
active admin
Oracle VM VirtualBox
App Service
Gambling & Betting
MS SQL Server Management Studio
...

Detail-oriented software engineer with over 5 years of experience in full-stack development and expertise in modern programming languages such as Python, JavaScript, and Java. Demonstrated knowledge in agile methodologies, object-oriented programming, and software development life cycle (SDLC). Holds a Computer Science degree and has a track record of implementing robust code for high-volume businesses. Proficient in using technologies like React, Node.js, and Docker, with extensive experience in database design and management using SQL and NoSQL databases. Solid background in developing and optimizing algorithms, data structures, and system design, ensuring best practices in code quality and software architecture.

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Seniority Junior (1-2 years)
Location Victoria West, South Africa
Node.js 12yr.
Laravel 11yr.
TypeScript 8yr.
AWS 8yr.
Kafka 5yr.
...

Accomplished software engineer with 13+ years of experience designing resilient backend systems and scalable digital platforms. Deep expertise in Node.js, TypeScript, Kafka, GraphQL, event sourcing, and cloud-native architecture on AWS and GCP. Proven leadership in implementing high-impact, secure, event-driven microservices. Experienced in stakeholder engagement and team mentoring. Passionate about clean code, system optimization, and continuous technical innovation.Core Competencies: - Senior Software Engineer with a proven track record in complex, distributed systems in enterprise environments. - 8+ years of technical leadership and stakeholder collaboration - Backend-focused full-stack engineer with modern cloud, serverless, and data expertise - Strong foundation in microservices, CQRS/ES, and event-driven design - Cloud platform experience: AWS, GCP, Cloudflare (Pages/Workers), Vercel - Framework agnostic, T-shaped Software Engineer, and an expert web developer

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Seniority Expert (10+ years)
Location London, United Kingdom
Dart
Crashlytics
GetX
...

Software Engineer with over 4 years of specialized experience in Flutter development, proficient in Dart and well-versed in state management techniques including GetX, Provider, BLoC, and Redux. Highly skilled in building scalable mobile applications with robust data management solutions using Firebase, Firestore, and SQLite, while adhering to MVC and MVVM architectural best practices. Successfully developed and deployed 25+ Android and iOS apps to the app stores, implementing real-time authentication and synchronization features. With a solid academic background holding a Bachelor’s in Computer Application and currently pursuing a Master’s in Computer Applications, I bring both strong technical expertise and a continuous learning mindset. Recognized in senior roles at tech firms for leading projects like Surat Jugaad Plus and Pensive, I have consistently demonstrated problem-solving, debugging, and delivering user-centric applications that scale.

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Seniority Middle (3-5 years)
Facebook Auth 3yr.
Dart 3yr.
React
Redux
TypeScript
...

With an impressive tenure exceeding 15 years in software engineering, the engineer boasts a rich mosaic of technical expertise, underscored by a strong academic foundation with a Doctorate in Mechanical Engineering from the National Technical University of Ukraine 'Kyiv Polytechnic Institute'. Specializing in Flutter, the engineer has a history of crafting mobile applications with a sharp focus on developing new features, debugging, and enhancements. Proven proficiency in a plethora of programming languages and technologies including Dart, React, Redux, TypeScript, and ActionScript is evident. The engineer's versatility is further highlighted by a diverse project portfolio encompassing automotive interfaces, online casinos, educational platforms, and more. Their contribution to software development adheres to the latest SDLC best practices, with applications that have significantly benefited from their knowledge in Data Science and Python, as certified by Robot_dreams.

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Seniority Expert (10+ years)
Go
Gin
GRPC
PostgreSQL
...

Software Engineer with a strong background in Mechanical Engineering and specialized training in Go programming. Skilled in Go, Gin, Fiber, gRPC, PostgreSQL, and cloud technologies like AWS, with practical experience in building scalable backend systems and automating deployment workflows. Notable achievements include enhancing processing speeds by 40%, improving system uptime by 30%, and reducing bug reports by 20%. With a proven ability to optimize database queries and improve performance metrics across various projects, this candidate is adept at creating high-quality, resilient applications in fast-paced environments. Proficient in best practices of CI/CD, PostgreSQL schema design, and performance tuning, offering solid expertise in backend development.

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Seniority Junior (1-2 years)
Location Pakistan
Flutter 4yr.
Dart 4yr.
Clean Architecture 4yr.
DartZ 3yr.
Flutter Lifecycle management 3yr.
...

Flutter Developer with 3+ years of experience delivering high-quality cross-platform apps across fintech, edtech, and medtech industries. Specialized in Clean Architecture, performance optimization, and offline-first experiences. Proven ability to own full mobile stacks, from architecture to release, with measurable impact on user engagement and scalability.

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Seniority Senior (5-10 years)
Location Tashkent, Uzbekistan
JavaScript 1yr.
...

Aspiring Software Developer Skilled in ASP.NET, Flutter, and Firebase Integration. Passionate About UX/UI Design & Innovative IT Solutions, IT Graduate. Problem-Solver & Tech Enthusiast

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Seniority Junior (1-2 years)
Location Bloemfontein, South Africa
C++ 15yr.
...

Software engineer with over 15 years of experience in Windows desktop application development, specializing in scientific software and business solutions. Core technical competencies include advanced knowledge in C++, Delphi, and Python, with a strong background in scientific research and programming within academic and commercial sectors. Proven track record in developing complex scientific software for gamma spectrometry analysis and environmental radiation monitoring. Demonstrated ability to architect and maintain comprehensive POS systems for retail management. Educational background includes a Master's degree in Physics, emphasizing nuclear and particle physics, which underpins a solid understanding of scientific computational requirements. Commitment to professional growth is evidenced by continuous freelance work and publications in scientific journals.

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Seniority Expert (10+ years)
Python
SQL
PySpark
NLP
GenAI
...

Engineer with 10+ years’ experience in AI, excelling in NLP, GenAI, computer vision, and model deployment. Expertise in Python, SQL, PySpark, and cloud platforms. Established record of enhancing AI-driven services, improving workflows, and boosting efficiency. Proven capabilities in developing robust ML pipelines, integrating state-of-the-art technologies like LLMs and RAG pipelines, and delivering solutions across diverse industries. Advanced in web and full-stack development, data engineering, analysis, and DevOps practices, underpinned by solid formal education in computer science.

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Seniority Expert (10+ years)
Location Karlino, Poland
Backbone.js 9yr.
TypeScript 8yr.
SQL/NoSQL 3yr.
Express 3yr.
AWS 2yr.
...

10+ years of experience in web development, M.Sc in Software Engineering, GAI, LLMs Front-End: Angular, React, Vue.js (JavaScript & TypeScript) Back-End: Node.js, Next.js, TypeScript , PHP Mobile: React Native AWS Cloud infrastructure Control systems (e.g., Git) and familiarity with DevOps practices for continuous integration and deployment (CI/CD). Unit testing, integration testing, and end-to-end testing. Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Ability to motivate and inspire team members, resolve conflicts, and provide constructive feedback. Experience conducting assessments and interviews remotely.

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Seniority Expert (10+ years)
Location Lagos, Nigeria
Dart 5yr.
Flutter 5yr.
...

Software engineer with 5+ years of experience specializing in Flutter application development for a variety of industries, including finance, real estate, and governmental disaster management. Demonstrated expertise in both mobile and web development with a solid foundation in computer science, holding a Bachelor's degree in Informatics Engineering. Proficient in key technologies such as Dart (Flutter), React-Native, and Cordova, with a focus on both frontend and backend development. Adept at collaborating in team environments and employing Agile and waterfall methodologies, the engineer has a strong track record in developing applications that address complex requirements. Proficient in state management (BLoC, GetX) and integrating services such as Firebase and RESTful APIs. The candidate brings a combination of technical acumen and practical experience, poised to make a significant impact on future projects.

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Seniority Middle (3-5 years)
Location South Tangerang, Indonesia
Python 3yr.
Java 3yr.
Django REST framework 1yr.
React 1yr.
Ext JS 1yr.
...

Full-Stack Engineer with hands-on experience in Django, Python, and MySQL, showcasing strong backend API design with performance optimization, validated by a 30% query speed improvement in past projects. Expertise in frontend development using React.js, demonstrated through enhancing user interfaces and load times for high-traffic applications. Holds top 5% ranking in Java on HackerRank, underpinned by a B.Tech in AI & Data Science, and a Computer Science diploma, ensuring a solid theoretical foundation. Recognized for technical prowess with certifications in AWS Cloud and 5★ Java proficiency. Proven track record in agile development, clean architecture, and real-world problem-solving with a passion for quality and efficiency.

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Python
Dart
JavaScript
Figma
Microsoft Visual Studio Code
...

Software engineer with practical experience in mobile and web development, specializing in Flutter and familiar with state management tools like Provider. Demonstrated expertise in creating user-friendly interfaces and features, as reflected in projects such as a pharmacy management system and a comprehensive food delivery app. Collaborates effectively in agile environments, with a history of successful team-based project completions. Strong foundation in computer science from Jimma University, equipped with skills in Python, Dart, JavaScript, and a range of development tools including Figma, VS Code, and Git. Proficient in the use of Firebase for building scalable apps with real-time data, emphasizing clean code practices and responsive design principles. Proactive in acquiring user feedback to refine product functionality.

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Git 5yr.
Python
Dart
Agile
...

Software Engineer with 5+ years of full-stack development expertise, specializing in mobile and backend technologies. Proven ability to deliver 20+ applications across Android and iOS, utilizing languages such as Python, JavaScript, Dart, and Java coupled with proficient use of frameworks like Django, Node.js, and Flutter. Demonstrates strong proficiency in database management with PostgreSQL, MySQL, MongoDB, and Firebase, and excels in setting up CI/CD pipelines and employing Agile methodologies for efficient deployment and iteration. Holds a BSc in Computer Science from Maseno University and is known for sophisticated leadership and team mentorship capabilities, contributing to key projects like Kenya's Government Digital Services and the CapitalPay fintech platform.

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Seniority Senior (5-10 years)
Location Nairobi, Kenya
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