Upwork Expert Vetted Badge owner, which means among the top 1% of talents on Upwork. I have over 20 years of software development experiences working for leading tech companies such as Microsoft, Starbucks, Institute for Systems Biology. I'm passionate in software development and new technologies. Very quick learner and excellent team worker. Open-minded and can quickly fit into any environment and contribute to the projects. My experiences and visions will be a great value for any company. I'm a USA citizen.
Self-motivated, energetic collaborator who thrives on working in a fast-paced environment with tight deadlines and have a desire to stay updated on current and new technologies.
As a passionate full-stack developer with can-do attitude, I'm thrilled to leverage my technical experience to implement client's ideas into reality. I’m proud that my web development work has helped my clients to grow their businesses and generate more revenue.
My strength is creativity and tenacity. I emphasize effective communication to gather client’s requirements and translate those into an engaging, effective and unique software solution with great architecture and high quality implementation is what has helped me obtain over 100 positive reviews.
- Strong problem solving skills
- Clear logic & Clean code
- Smart development & accurate timeline
- Effective and respectful communication & excellent teamwork
- Responsive & Pixel-perfect fronted development
My skill sets are
• AI, Machine Learning, Big Data
• Blockchain
• Programming Languages: JavaScript/Typescript, Python, PHP, Java, .Net, C++
• Front-End Development: React.js, React Native, Angular, Vue.js, Next.js, Nuxt.js, jQuery, HTML, CSS., SCSS
• Back-End Development: Node.js/Express framework, Django, Flask, Laravel, Java, .Net
• Database Management: SQL/NOSQL databases
• Could: Amazon Web Services (AWS), Azure, Google Cloud
• Other: DevOps, Kubernetes, Docker, GIT
Availability
- Flexible in any time zone
- 40+ hours per week
- Bilingual Communication in English, Mandarin Chinese
Thank you
React
Next.js
Node.js
Python
Django
Flask
React Native
JavaScript
ASP.NET MVC
Shopify
WordPress
Laravel
Chase H.
Redmond, Washington
$65/hr
5.0
8 jobs
I'm Chase, a Senior Software Engineer with 10+ years of experience owning full-stack systems across multiplayer games, cloud backend infrastructure, and developer tooling. At my most recent role, I was the sole engineer accountable for an entire live multiplayer game's technical stack - client systems, dedicated server infrastructure, backend APIs, database architecture, CI/CD pipelines, and live operations - effectively filling six specialized engineering roles simultaneously.
I don't just contribute to systems. I own them end-to-end, from initial architecture through production stability and live deployment. My background spans Unity/C#, Azure/AWS, MongoDB/Redis, multiplayer networking, platform integrations (PlayFab, Epic Online Services, Steamworks, Easy Anti-Cheat), and backend API design. I've shipped production systems at Blizzard Entertainment on StarCraft II and led all engineering on a live multiplayer title at tinyBuild.
I take on hard problems independently, communicate clearly across technical and non-technical teams, and deliver systems that hold up under real-world load.
--------------------
CORE SKILLS
--------------------
Programming Languages
- C#, Python, TypeScript, C/C++, Lua
Application Development (Client & Server)
- Unity, React, Next.js, Roblox Studio
- Node.js
- PlayFab, Epic Online Services, Steamworks, Easy Anti-Cheat, Multiplay
- Azure, AWS, MongoDB, Redis
Tooling & Automation
- Git, SVN
- Jenkins, Docker
- CI/CD pipelines, build systems, Python workflow automation
Collaboration & Problem Solving
- End-to-end system ownership
- Multiplayer networking and desync debugging
- Performance optimization and profiling
- Production issue diagnosis across client, server, and backend
- Technical leadership and cross-team coordination
--------------------
NOTABLE PROJECTS
--------------------
Blizzard Entertainment (StarCraft II)
- Developed client gameplay features, UI systems, and engine improvements as part of a 2-3 person engineering team
- Built and migrated web-based tooling pipelines and Python-automated data migrations for F2P feature rollout
- Implemented backend features including CCPA compliance, Premium Arcade, and Twitch integrations
- Collaborated cross-team on DeepMind AI integrations, anti-cheat systems, and platform integrations
tinyBuild (Live Multiplayer Brawler)
- Sole engineer owning the entire technical stack: client systems, dedicated server infrastructure, backend APIs, database, matchmaking, CI/CD, and live operations
- Designed and built scalable backend architecture on Azure/AWS using MongoDB and Redis, operating dynamic dedicated servers via Multiplay with A/B deployments
- Owned all platform integrations: PlayFab, Epic Online Services, Steamworks, and Easy Anti-Cheat
- Directed engineering efforts, mentored teammates, and served as primary technical contact for external teams
Contract Work
- Multiplayer lobby systems (Steam & LAN matchmaking)
- Backend infrastructure and API development
- Python tooling, CI/CD pipelines, and codebase refactors
- Platform integrations and anti-cheat implementations
- Built a Three.js 3D model viewer integration for a client web application content pipeline
--------------------
ACCOMPLISHMENTS
--------------------
- Owned and operated a complete live multiplayer game backend as a single engineer, covering infrastructure, APIs, database, matchmaking, and server orchestration at production scale.
- Designed and implemented A/B deployment strategy for dedicated game servers, minimizing downtime during live updates.
- Integrated Easy Anti-Cheat as a shipped production responsibility, protecting a live player base.
- Delivered Python-automated data migrations at Blizzard to consolidate expansion content into the base game for StarCraft II's F2P rollout.
- Architected backend systems from the ground up that supported a live game through its full production lifecycle.
--------------------
EDUCATION
--------------------
- B.S. Computer Science in Real-Time Interactive Simulation, DigiPen Institute of Technology
- A.S. Computer Science, Highline College
C++
C
C#
TypeScript
Node.js
Python
Unity
Game Development
MongoDB
Jenkins
Lua
Software Debugging
Microsoft Azure
AWS Development
Casey R.
Redmond, Washington
$80/hr
5.0
22 jobs
My professional experience basically boils down to one thing...
Automation.
If you find yourself doing the same thing 5 times, that's 4 times too many.
Whether it's:
* Excel Spreadsheet Manipulation
* PDF Parsing
* File Management
* Email Status Updates
* Data Analysis
* Web Entry/Scraping
I have spent enough time doing things the long way to know it's the wrong way. Automation is the name of the game, and the more we automate, the more we can focus on what's important.
* I pride myself on clean, well-tested code, and having a small technological footprint
* I expect my code to work, and work well
I am also interested in developing video games, but will work for cheap until I gain experience!
Git
Python
Bash
Back-End Development
ETL
Bot Development
Web Scraping
Computer Science
Microsoft Excel
Scripting
Computer Vision
Data Analysis
Automation
Analytical Presentation
Natural Language Processing
Irina B.
Redmond, Washington
$45/hr
4.6
43 jobs
I help healthcare companies and digital health teams build mobile apps faster, securely, and cost-efficiently, especially for connected devices, BLE integrations, and regulated environments.
Instead of managing separate codebases, I deliver a single, scalable cross-platform architecture that supports medical-grade mobile applications, reduces development time by 40–60%, and maintains native performance.
My focus goes beyond standard mobile development — I specialize in healthcare ecosystems, including:
• Connected medical devices & wearables (BLE, IoT)
• Real-time and near real-time health data processing
• Apple Health / Google Fit integrations
• HIPAA-aligned architectures & secure data handling
• Remote patient monitoring & digital therapeutics apps
Whether you're building an MVP or scaling an existing product, I help you choose the right architecture, avoid costly mistakes, and accelerate time to market.
𝙁𝙖𝙘𝙩𝙨 𝙖𝙗𝙤𝙪𝙩 𝙢𝙚
🏅 Built 100+ mobile applications across Flutter, iOS and Android
🚀 15+ years in mobile development including Flutter mobile development
🏆 Founded a technology company acquired by Microsoft
🌐 Developed developer tools acquired by AWS
🎯 Built products across Healthcare, IoT, Travel, Ecommerce and SaaS
💰 Helped startups launch profitable mobile products for iOS and Android
🔍 𝙃𝙤𝙬 𝙄 𝙃𝙚𝙡𝙥 𝙁𝙤𝙪𝙣𝙙𝙚𝙧𝙨
Whether you're building a startup MVP, SaaS platform, marketplace app or scaling an existing mobile development product for iOS and Android, I deliver production-ready Flutter mobile apps using modern mobile development architecture.
𝙈𝙮 𝙬𝙤𝙧𝙠𝙛𝙡𝙤𝙬 𝙛𝙤𝙘𝙪𝙨𝙚𝙨 𝙤𝙣:
✔ Fast MVP mobile development for startups
✔ Clean and scalable Flutter mobile development architecture
✔ Stable Flutter builds for iOS and Android
✔ High-performance UI and animations for Flutter mobile apps
✔ Long-term scalability in mobile development
This approach helps companies reduce mobile development costs and launch faster across iOS and Android markets.
𝙎𝙝𝙤𝙧𝙩 𝙥𝙞𝙩𝙘𝙝
I'm a Senior Flutter Developer / iOS & Android Mobile App Developer with 15+ years of experience in mobile development. I design and scale mobile applications for iOS and Android using Flutter mobile development, Dart, Swift, Kotlin, Android development and iOS development combined with modern mobile architecture. Whether you need a Flutter developer, cross-platform mobile developer, startup MVP engineer, or mobile development expert for iOS and Android, I’ve got you covered.
𝙁𝙪𝙡𝙡 𝙡𝙞𝙨𝙩 𝙤𝙛 𝙢𝙮 𝙨𝙠𝙞𝙡𝙡𝙨
📱 Mobile Development: Flutter, Dart, Swift, SwiftUI, Objective-C, Kotlin, Java, Android, iOS
📲 Mobile Architecture: Flutter architecture, BLoC, Provider, Riverpod, Clean Architecture, MVVM
🖥 Web: TypeScript, JavaScript, React.js, Next.js
🔗 Backend & APIs: REST APIs, Firebase, GraphQL, WebSockets
🗄 Databases: SQLite, Firestore, MySQL, PostgreSQL
⚙ Tools: Git, CI/CD, Fastlane, TestFlight, Firebase
With over a decade in mobile development, I also help with mobile product strategy, Flutter architecture consulting, AI integrations, backend infrastructure and full-stack development for mobile products.
𝙄𝙛 𝙮𝙤𝙪'𝙙 𝙡𝙞𝙠𝙚, 𝙛𝙚𝙚𝙡 𝙛𝙧𝙚𝙚 𝙩𝙤 𝙘𝙡𝙞𝙘𝙠 𝙩𝙝𝙚 𝙜𝙧𝙚𝙚𝙣 "𝙎𝙚𝙣𝙙 𝙖 𝙢𝙚𝙨𝙨𝙖𝙜𝙚" 𝙗𝙪𝙩𝙩𝙤𝙣 𝙖𝙣𝙙 𝙩𝙚𝙡𝙡 𝙢𝙚 𝙢𝙤𝙧𝙚 𝙖𝙗𝙤𝙪𝙩 𝙮𝙤𝙪𝙧 𝙢𝙤𝙗𝙞𝙡𝙚 𝙙𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩🚀
Over the years I’ve delivered Flutter mobile development solutions for iOS and Android startups, SaaS platforms and enterprise mobile applications, helping companies scale mobile development products across Flutter, iOS and Android environments.
Flutter developer focused on Flutter mobile development for iOS and Android applications. Experienced in building scalable Flutter mobile apps for iOS and Android using modern mobile development architecture. I design and deliver Flutter mobile development solutions for iOS and Android startups, SaaS products and enterprise platforms. My work combines Flutter mobile development, iOS development and Android development to deliver stable mobile applications with high performance across Flutter, iOS and Android.
7/04
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