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India
$25/hr
100%
Job Success
$100K+ earned
Start of list.
End of list.
Good working skills in HTML5 Game Development, Construct3, Construct 2, Flash game programming, flash designing and 2d Animation, E- Learning Presentations.
United Arab Emirates
$40/hr
99%
Job Success
$4M+ earned
Available now
Offers consultations
Start of list.
End of list.
LiveKit, WebRTC, SIP/VoIP, Electron, AI, video, audio, real-time software development at scale. 600M+ AI call minutes a month (Nucleus). $10M+ ARR EdTech (BrainCert). Enterprise VMS surveillance for 50,000 users (VALT). 𝗙𝗿𝗲𝗲 𝗣𝗥𝗗 𝗳𝗼𝗿 𝗻𝗲𝘄 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀, 𝗳𝗿𝗲𝗲 𝗰𝗼𝗱𝗲 𝗿𝗲𝘃𝗶𝗲𝘄 𝘄𝗶𝘁𝗵 𝗶𝘀𝘀𝘂𝗲 𝗿𝗼𝗼𝘁𝘀 𝗼𝗿 ~𝟱𝟬𝗵 𝘁𝗿𝗶𝗮𝗹 - 𝗳𝗼𝗿 𝗲𝘅𝗶𝘀𝘁𝗶𝗻𝗴 𝗼𝗻𝗲𝘀.
I'm the CEO of Fora Soft, and personally architect every project. You get an owner accountable for delivery and senior judgment from day one, not a junior learning WebRTC on your budget.
⚠️ DM or invite me - I respond within 2 hours.
WHAT I'VE BUILT (selected):
→ SpeedSpace (LiveKit) - remote video production on LiveKit, WebRTC, and FFmpeg. Makes content for Netflix, HBO, and Electronic Arts. Shown at Paris Fashion Week.
→ Nucleus .com (SIP/VoIP) - WebRTC and SIP business phone system for the Canadian telecom Fibernetics. 600M+ call minutes a month, 5,000+ businesses, AI voice agents, SOC II, HIPAA.
→ FRP.live (Electron) - desktop and AI music platform. 720,000+ licensed tracks from Sony, Universal, and Virgin. Used by 12,000+ DJs.
→ VocalViews .com (WebRTC) - research platform with 1M+ participants, used by Samsung, McDonald's, Google, Netflix, TikTok, Adobe.
→ Tyxit .com (Electron, audio) - Electron desktop app for sub-30ms live music. Performed at the Montreux Jazz Festival. $1.3M raised, partnered with Karmine Corp.
→ VALT ipivs .com (Wowza, WebRTC) - video recording, streaming, surveillance SaaS platform. 770+ US organizations, 2,500 IP cameras, 50K+ users. From $1M revenue in the launch year to $9.7M now. 12 years’ partnership.
→ Live Eye (Electron) - AI retail surveillance. 10K+ locations, $5M+ fraud prevented.
→ BrainCert .com - the first HTML5 + WebRTC virtual classroom. 100K+ customers, 500M+ classroom mins.
→ Sprii - €365M+ in live commerce sales. 72K+ live events.
→ StreamLayer - interactive sports overlays, $14.1M raised. NBC, CBS, Red Bull, Chelsea FC.
PROBLEMS I SOLVE (with proof from real projects):
• When third-party SaaS gets too expensive at scale: replaced GoogleDocs, Zoom and Discord with a custom LiveKit platform, 2,000 students in one live class (Scholarly: 15,000+ users)
• Sub-30ms latency for live music (Tyxit, Electron app: Montreux Jazz)
• SIP/VoIP calling at scale: WebRTC-to-SIP bridges, FreeSWITCH, Telnyx (Nucleus, 5K+ businesses)
• AI surveillance on Electron desktop apps: $5M+ fraud prevented across 10K+ locations (Live Eye)
• AI voice agents processing 600M+ call min/mo (Nucleus)
• Secure video conferencing at enterprise scale: up to 500 participants, AES-256 (iMind: used by PwC and national telecoms)
• Computer vision: 99.5% face recognition, 500K+ plates/day (Mindbox .ai)
• Live commerce at €365M+ sales (Sprii: 72K+ events, 3K+ brands)
• Sports tech: Premier League (Vokalo), NBC/CBS/Red Bull (StreamLayer, $14.1M raised)
SPEC-FIRST AGENTIC AI:
I work spec-first, not vibe-first. As CEO and architect, I write the full spec and architecture before any code. Then my senior team drives AI agents against strict guardrails to build production-grade systems. You get AI speed with the stability of a senior team.
TECH I WORK WITH DAILY:
◆ Real-time, video, and audio: WebRTC, LiveKit, MediaSoup, MOQ, Ant, Kurento, Janus, Jitsi, Agora, FFmpeg, GStreamer, Wowza, HLS/DASH, RTMP/RTSP
◆ VoIP and telecom: SIP, FreeSWITCH, Telnyx, Twilio, Vonage
◆ Backend: Node.js, NestJS, Python, Go, PHP, PostgreSQL, MySQL, MongoDB, Redis
◆ Frontend and desktop: Electron, React, Next.js, Vue, Angular, JavaScript, TypeScript
◆ AI/ML: OpenAI API, Whisper, Deepgram, Speechmatics, Amazon Polly, TensorFlow, PyTorch, OpenCV
◆ Mobile: React Native, Flutter, Swift, Kotlin
◆ Infra: AWS, GCP, Azure, Docker, Kubernetes, CI/CD
WHO I HELP:
• Startups building their first video MVP
• Scale-ups hitting WebRTC performance walls
• Enterprises needing HIPAA/SOC2 video
HOW I WORK:
1. 30-min call – assess your project honestly (including if we're NOT the right fit)
2. Written architecture + estimate within 24 hours
3. Dedicated team assigned within 1 week
4. I stay involved throughout – architecture reviews, tech decisions, escalations
WAYS TO ENGAGE: build from scratch, drop in on the hard WebRTC/LiveKit/SIP/Electron modules, or rescue a stalled build.
WHY FORA SOFT: 100% JSS, $10M+ earned, 925 jobs, 403K+ hours, 400+ clients across 17+ countries, 20 years in video, audio, and real-time software, Top WebRTC Developer 2022 and Top Telecom Developer 2024, 1 of 400 developers passes our internal selection.
CLIENT FEEDBACK: "We've been working together for 10 years and continue. Fora Soft planned and built our entire video SaaS from scratch across web, iOS and Android." - Dustin, CTO @ VALT (50k users, 770 organizations, 2,500 IP cameras)
⚠️ Press Invite or message me. I'll send back a PRD, architecture, and an estimate within 24 hours.
Associated with
Fora Soft LLC
$10M+
earned
$55/hr
100%
Job Success
$10K+ earned
Available now
Offers consultations
Start of list.
End of list.
I am an American citizen. English is my native language. Spanish is my second language. German is my third. I have also studied numerous other languages. In addition to software development as a contractor, I tutor students online in both computer science and the English language. I am also a technical writer, and I have authored a book on the C programming language.
Ukraine
$50/hr
100%
Job Success
$90K+ earned
Start of list.
End of list.
Full stack development, as usual based on crossplatfrom technologies.
My experience has 18 years story, from basic to AI
Mobile & Standalone development ( usually games, rarely application & tools )
Currently, growing in AI/ML technologies
First of all, I look for interesting projects
Technologies: Web3.0 / Unity3d / Unix
Server-side: Php, Python, Java, MySQL, NoSQL
Libraries/extensions: Objective-C, Java, C++
SDK: most popular (analytics, advertising, payments, remote-control )
Others: CI/CD & dev team/processes improvement
Let me know, what do you want, I guess, I can do it or provide free consult to you at least
Using PoC only
$100/hr
100%
Job Success
$100K+ earned
Start of list.
End of list.
Highly accomplished Software Architect and Machine Learning Engineer with a solid mathematical background and 20+ years of experience. I specialize in bridging the gap between complex algorithmic research and high-performance system execution. My unique expertise combines advanced AI/ML development with a deep background in compiler design, domain-specific languages (DSLs), and low-level code optimization.
Whether you need to develop production-grade ML models, optimize heavy computing algorithms, or build specialized software tools and custom IDEs, I deliver mathematically sound and architecturally robust solutions.
🧠 Core Expertise
Machine Learning & Research: Algorithm development, statistical data processing, predictive modeling, and AI logic orchestration. Strong scientific and analytical background with proven experience in research and academic article writing.
Compilers & DSL Engineering: Expert in the theory of formal languages, syntax analysis, parsers, and custom compilers. Prototyping and implementing Domain-Specific Languages (DSLs) tailored for specific business or technical domains.
High-Performance & Optimization: Optimization of complex calculations, data structures, and database architectures for high-throughput systems.
Full-Cycle Infrastructure: Designing client-server systems for massive data storage, visualization of observation results, and custom developer tools (Eclipse RCP/Xtext/Plugin development).
TECHNICAL SKILLS SUMMARY
🤖 Machine Learning & Mathematics
Algorithms & Math: Advanced Mathematics, Algorithm Design & Optimization, Statistical Analysis, Data Visualization.
AI Logic: Neural Network integration, Data Processing pipelines, Game AI & Logic engines.
Research: Scientific research, Data insights, Technical writing, and Academic publication standards.
🛠️ Compiler & DSL Development
Formal Languages: Syntax Analysis, Parser Generation, AST Manipulation.
Tools & Frameworks: Xtext, Xtend, ANTLR.
IDE Development: Eclipse RCP, SWT/JFace, Custom Plugin Development.
☕ Enterprise Java & Backend Infrastructure
Core Java: Java SE (High Performance), Java Reflection, Sockets/Networking.
Frameworks: Spring (Core, MVC, AOP), Hibernate, JDBC.
Data Processing: SAX, DOM, XSLT, Jasper Reports.
Databases: PostgreSQL, MySQL.
📱 Legacy & Specialized Experience
Desktop/Web UI: Swing, GWT, GXT.
Cross-Platform & Graphics: LibGDX (Game engines/logic).
Legacy Stack (ActionScript/Flex): Flex 4.6, ActionScript 3.0, Adobe AIR, Flash Media Server, PureMVC (valuable for legacy system migration).
⚙️ Tools & Workflow
IDEs: IntelliJ IDEA, Eclipse.
Build & Version Control: Maven, GIT, SVN.
Architecture: Gang of Four (GoF) Design Patterns, Clean Architecture.
$30/hr
100%
Job Success
$50K+ earned
Start of list.
End of list.
ASP/PHP/Javascript/CSS/HTML5 Canvas Full Stack web developer with more than 15 years of experience
Expert areas:
Classic ASP, PHP, ASP.NET
Javascript, Jquery, CSS3, HTML5, Bootstrap
Flash actionscript 1, actionscript 2, actionscript 3
Adobe Animate HTML5 Canvas
Flash to html conversion
Google Maps API, Google ReCaptcha, Google Translation API
SOAP, API Integration
Excel VBA, macro, MS access macro
Site migration
Database Conversion MS Acces to MS SQL, MySQL
Data Extraction, Web Scapping, Scapping sites
payment gateway integration, IPN, webhooks, Stripe, Paypal
United States
$65/hr
100%
Job Success
$30K+ earned
Start of list.
End of list.
I'm a Los Angeles based Web/Game/App developer.
My skills:
-HTML5 Games/Apps/Rich Media using Phaser, PIXI, Greensock, CreateJS, HAXE, and Unity using Javascript, Typescript and C#
-Ionic PWA/iOS/Android apps
-iOS/Android apps from HTML5 with Angular/Vue/React using Cordova/Capacitor
-HTML5 Rich Media - True[x], Sizmek, Double Click
-iOS/Android Apps/Games with Swift and Java
-Coversion of Flash/Actionscript games/richmedia to HTML5
-Familiarity with many game IDE's such as Construct 2 and 2Dkit
-General web development with HTML5, CSS3, jQuery
-Video Editing with Final Cut and Premiere
-General HTML5/CSS3 web dev - Bootstrap, React, Wordpress/Tumblr themes, etc.
-GIT, Node.js, Grunt, SASS, ES6, Webpack, and all the other tools needed these days
$35/hr
100%
Job Success
$100K+ earned
Start of list.
End of list.
My experience in Web development spans over 10 years. During this time I experienced all aspects of the web development process, including front/back-end development and in some project I played a role of a paying customer. The latter gave me an opportunity to learn a new prospective on programming. I prioritize creation of a working application that solves business problems of a customer, rather than all other. In this way the goals of the projects can be achieved quickly and efficiently.
Skills and Relevant Experience:
• 10 years of JavaScript, CSS3, HTML5, php, MySql, PostgreSql, ActionScript
• 5 years of native javascript, jQuery, jQueryui, AngularJS, ReactJS, Bootstrap, Wordpress, Ajax, DOM, XML, SaSS, less, and json
• 20 applications with api: facebook, youtube, twitter, instagram, mailchimp, yahoo weather, and others
• Up to 200 flash games and applications.
• 10 years of Adobe Flash, Photoshop, Illustrator, Edge Animate; Google web designer
• Architect of 6 web applications (front-end and server side)
• Responsive web development, optimizing for mobile
• Strong analytical, problem solving and troubleshooting skills
• Ability to fix bugs and to add functionality into the code written by another developer
• High load optimizing, cross-browser compatibility
• Project management
United States
$35/hr
100%
Job Success
$200K+ earned
Start of list.
End of list.
Having a game idea is the easier part, but being able to turn that idea into a game is the tougher challenge.
You have the idea and design for your game ready, as well as your graphics and sounds effects, but the final missing piece of your game is to bring all of these together with coding.
Hello, I'm a freelance game programmer with 10+ years of game programming experience, specializing in development of 2D, single-player, web browser games. I can help you build your game, starting from its inception, through the development cycles including an minimum viable product (MVP) or prototype, and finally to deploying a finished, polished product on your website.
** How I can Help You **
That missing piece is my specialty. With your design details and media, I write the code to combine it all into a fully-functioning game.
** Game genres **
I code 2D single-player, HTML5 game genres including, but not limited to:
⭐ Platformers
⭐ Side / Top-down scrollers
⭐ Action / Arcade / Shooters / Adventure / Maze
⭐ Puzzles / Blocks / Music / Educational
⭐ Cards
** Tech stack **
⭐ Phaser 3
⭐ Typescript / JavaScript
⭐ Node + npm
⭐ Vite / Webpack
⭐ Adobe Animate / CreateJS
** Other services: **
⭐ Converting an existing 2D single-player Flash game to HTML5 Canvas, using Adobe Animate
⭐ Native Android app creation supported using Capacitor by Ionic, and Android Studio.
** Also, I should point out services I don't offer: **
* Game design
* Graphics / art
* Website design / development
* Blockchain / Metaverse / NFT / Crypto
* Gamification / Apps that are not games
** Why Hire Me? **
For starters, a game programmer/coder can be invaluable to you if:
* Coding has always felt like rocket science to you; or
* You can code, but don't have the time, due to addressing larger-scale challenges in your business
Coders take on the burden of figuring out how your game should work under the hood. So you can focus on the bigger picture – delivering quality, engaging experiences to your players.
** If we were to work together, here's what we'd do: **
With your design details, graphics, and other assets, I work with you to help you build your game. The more details you can provide, the better, but I can help flesh out missing pieces from what elements your game may need, best practices, and the final deployment onto your website.
1. Press the invite button to invite me to your job.
2. We can use Upwork chat or a phone / video call to communicate further what you're looking for to determine if we're a good fit.
3. We'll discuss all the details, including how the game should function, what assets we'd need, and hosting the game on your website.
Perhaps you have (or maybe are!) the designer, you have an artist, and you're looking for a programmer. If so, I'd be interested in learning more about the web game you are building.
If this sounds good, press the invite button, and let's find out if we're a good fit for working together to help you create your game.
See you on the other side.
- Cartrell.
Kyrgyzstan
$50/hr
100%
Job Success
$100K+ earned
Offers consultations
Start of list.
End of list.
Senior developer with 10+ years of commercial experience in game development, mobile
applications, and backend services.
Specialized in Unity (C#), multiplayer solutions, high-load Python systems, and client-server
architecture.
Experienced in full-cycle development — from idea and prototype to production and
scaling. Confident working in distributed international teams, making architectural decisions, and
ensuring code quality and performance.
Key Skills
● Client-server architecture
● Multiplayer games and realtime services
● Google Cloud Services, Amazon Web
Services
● Unity (C#): optimization, DOTS / ECS,
Addressables
● Python backend: FastAPI, Django, async
services
● AI / ML integration (Unity ML-Agents)
● WebRTC, streaming, realtime interaction
● LLM models, chatbot development
● Speech analysis and generation
● Performance and memory optimization
● CI/CD, deployment, automation
● Server & client monitoring systems
(Prometheus, Grafana)
● Leadership, code review, mentoring
Technology Stack:
------- Programming Languages:
C#, Python, PHP, React (Javascript / Typescript), Java (Android), Dart,
Haxe, ActionScript 3
------- GameDev / Mobile:
Unity3D, Photon, DOTS, ECS (Entitas, Zenject), Unity
ML-Agents, Flutter
------- Backend:
Python (FastAPI, Django, Flask), PHP (Laravel, Symfony),
Node.js, Prometheus, Grafana
------- Networking & Realtime:
WebRTC, REST API, WebSocket, multiplayer architectures
------- Databases:
PostgreSQL, MySQL, Redis, MongoDB
------- DevOps / Infrastructure:
Docker, CI/CD, Linux, Nginx, cloud VPS
------- Other:
Other:
SocketIO, PlayFab, analytics, A/B testing, monetization, Research