Sergey I.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 help startups and product teams ship AI features that work in production — LLM integrations, RAG pipelines, and serverless backends. 6+ years in Python backend. The last 2 focused on AI: LLM routing, multi-provider API management, vector search, and cloud automation across Azure, AWS, and Google Cloud. What I've shipped: → LLM routing engine across OpenAI, Anthropic, and Google — cut API costs by 15-20% for a B2C AI app with real users → Automated RAG memory system on Google Cloud: pulls TL;DV meeting transcripts, organizes into client folders on Google Drive, indexes into Qdrant. Managed entirely through Claude via MCP — no manual work. Cut client's AI costs by 80% ($100 to $20/month). Runs on free tier. → Serverless annotation backend for computer vision pipelines: Azure Functions, CosmosDB, Blob Storage, CVAT integration — replaced manual workflows with automated pipelines → Open-source unified LLM SDK on PyPI (llm-api-adapter): single interface for OpenAI, Anthropic, and Google with cost tracking, token accounting, and error taxonomy What I build: - LLM integrations (OpenAI, Anthropic, Google — single or multi-provider) - RAG systems: chunking strategies, vector indexing (Qdrant), hybrid retrieval - Serverless backends: Azure Functions, Google Cloud Run, Cloud Functions, Cloud Tasks - Python APIs: Flask, FastAPI, SQLAlchemy - Automation pipelines: event-driven, async, cloud-native - CI/CD: GitHub Actions, Azure DevOps Stack: Python, Flask, FastAPI, SQLAlchemy, RESTful APIs AI/LLM: OpenAI API, Anthropic API, Google AI, Gemini API, LLM routing, prompt engineering, RAG Azure: Functions, CosmosDB, Blob Storage, Container Apps, Container Registry, Bicep IaC Google Cloud: Cloud Run, Cloud Functions, Cloud Tasks, Cloud Scheduler, Firestore, Drive API, Docs API AWS: EC2, RDS, Route 53 Vector DB: Qdrant DB: PostgreSQL, CosmosDB, Firestore DevOps: Docker, GitHub Actions, CI/CD Available for project-based and long-term contracts. Async-friendly.