Muhammad U.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I build production-grade AI voice systems and scalable backend platforms. I’m a Senior Full Stack Developer and AI Automation Specialist with hands-on experience designing and running real-world AI infrastructure, including my own platform FreeAIVoice, where I developed and deployed: GPU-based Text-to-Speech (TTS) systems Speech-to-Text pipelines using Whisper Voice cloning and multilingual voice systems High-performance FastAPI services with queue-based processing Scalable backend architecture using .NET Core, SQL Server, MongoDB, and Redis What I Can Do For You AI Voice & Speech Systems Text-to-Speech (TTS) using Coqui XTTS, Kokoro, ElevenLabs Speech-to-Text (STT) using Whisper Voice cloning & multi-speaker systems Audio generation pipelines (high throughput, GPU optimized) Streaming or batch audio APIs Backend & API Development FastAPI (Python) high-performance APIs ASP.NET Core / MVC enterprise applications REST API design with authentication, rate limiting, usage tracking Queue-based systems (MongoDB / Redis) Multi-threaded and multi-GPU processing systems Database & Performance Optimization SQL Server (DBA-level optimization, stored procedures, indexing) MongoDB (aggregation pipelines, queue systems) Redis caching for high-speed systems Query optimization for large-scale datasets System Architecture & Scaling AI system design (end-to-end pipelines) GPU workload optimization (parallel processing) Load balancing across multiple servers Docker & Linux (Ubuntu) deployment Cloud + on-prem hybrid systems Real Experience (Not Just Theory) I don’t just experiment — I build real systems. Developed and running FreeAIVoice platform Built multi-threaded TTS system with 2000+ audio generations per minute Designed scalable queue-based architecture for AI workloads Integrated AI into production SaaS systems (telephony & automation) Why Work With Me? I understand both AI + real production systems Strong combination of .NET + Python + AI (rare skillset) Focus on performance, scalability, and reliability I think like a solution architect, not just a coder Let’s Talk If you're building: AI voice platform TTS / Speech system SaaS backend High-performance API I can help you design, build, and scale it properly. Skills Text-to-Speech (TTS) Speech-to-Text (STT) Whisper Coqui TTS FastAPI Python ASP.NET Core C# SQL Server MongoDB Redis REST API Development AI Development Machine Learning Deployment Docker Linux (Ubuntu) GPU Computing