Ali Z.

Senior AI SaaS Engineer | RAG, ML, LLM, VDB | FastAPI, Django | AWS

𝟐𝟏𝗠 𝘂𝘀𝗲𝗿𝘀. 𝟭𝟬𝟬+ 𝗱𝗼𝗰𝗸𝗲𝗿𝗶𝘇𝗲𝗱 𝗔𝗜 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀. 𝟰𝟬% 𝗹𝗮𝘁𝗲𝗻𝗰𝘆 𝗿𝗲𝗱𝘂𝗰𝘁𝗶𝗼𝗻. That's what I delivered at my last role. I build AI backend systems that scale. I'm a 𝗦𝗿. 𝗣𝘆𝘁𝗵𝗼𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 and 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 with 𝟴+ 𝘆𝗲𝗮𝗿𝘀 of experience specializing in scalable backend systems, AI model deployment, and microservices architecture. ⸻ 𝗥𝗲𝗰𝗲𝗻𝘁 𝗪𝗼𝗿𝗸 → 𝗨𝗻𝗱𝗲𝘁𝗲𝗰𝘁𝗮𝗯𝗹𝗲 𝗔𝗜 (USA): Scaled AI backends to 21M+ users with 100+ GPU services and FastAPI microservices. I build RAG pipelines, AI Agents, train and fine-tune ML models, and ship them to production at scale - plus ChatGPT-style streaming (Redis + SSE) and 40% latency cuts. → 𝗢𝗿𝗮𝗻𝗴𝗲𝗦𝗵𝗶𝗻𝗲 (USA): Led backend for multi-tenant e-commerce platform. Built CDC pipelines syncing PostgreSQL to Elasticsearch in real-time. Integrated Stripe with multi-currency checkout. → 𝗧𝗵𝗲 𝗘𝗻𝘁𝗲𝗿𝘁𝗮𝗶𝗻𝗲𝗿 (UAE): Built AES-encrypted REST APIs with JWT, Auth0, and Stripe B2B payments. Refactored monoliths into Dockerized Flask, Django microservices. Scaled async workflows with Celery, RabbitMQ, and SQS. Achieved 30% DB load reduction through LRU caching across 5 deployment environments. → 𝗦𝗵𝗮𝘂𝗸𝗮𝘁 𝗞𝗵𝗮𝗻𝘂𝗺 𝗛𝗼𝘀𝗽𝗶𝘁𝗮𝗹 (Pakistan): Built ETL pipelines, data warehouse, and HIPAA-compliant Power BI dashboards for healthcare analytics. ⸻ 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱 𝗔𝗜 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴: Multi-agent systems, RAG pipelines, GenAI apps, ML training, model fine-tuning 𝗔𝗜 𝗦𝗮𝗮𝗦 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀: Multi-tenant LLM products, usage-based billing, streaming chat, AI agents 𝗩𝗲𝗰𝘁𝗼𝗿 𝗗𝗕: Qdrant, hybrid search, reranking, semantic chunking, embeddings 𝗔𝗜/𝗠𝗟 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁: GPU services, model versioning, async inference, LLM integration 𝗥𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗦𝘆𝘀𝘁𝗲𝗺𝘀: WebSockets, SSE streaming, Redis pub/sub, chat interfaces 𝗦𝘆𝘀𝘁𝗲𝗺 𝗠𝗶𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: ETL, DB & codebase (Bubble → Supabase), zero-downtime, data integrity 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀: FastAPI, Django, Flask, Celery, RabbitMQ, event-driven architecture 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: PostgreSQL, MongoDB, Elasticsearch, connection pooling, CDC pipelines 𝗣𝗮𝘆𝗺𝗲𝗻𝘁𝘀: Stripe (hold, capture, refund), multi-currency, subscription billing 𝗖𝗹𝗼𝘂𝗱: AWS (Lambda, SQS, S3, App Runner), GCP, DigitalOcean, SaladCloud (GPU) 𝗗𝗲𝘃𝗢𝗽𝘀: Docker, GitHub Actions, CI/CD, multi-environment deployment ⸻ 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 ✓ 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 on Upwork ✓ I respond within 1 hour ✓ Clear communication, no surprises ✓ I ship production-ready code, not prototypes ⸻ Let's discuss your project. Send me a message with your requirements and I'll share how I'd approach it.