Slava R.

AI Engineer | LLM, RAG, AI Agents | Python, FastAPI, LangChain

I'm senior AI Engineer specializing in production LLM applications, AI Agents, RAG pipelines, MCP servers, workflow automation, and Full-Stack development. I build scalable AI products with Python, FastAPI, React, LangChain, OpenAI, Anthropic, and vector databases. 🟢 AVAILABLE TODAY 07.08 ⚡ Message me "ARCHITECT" - get a free 45-min technical review of your AI architecture, RAG pipeline, or mobile app stack. No pitch. Just honest engineering feedback from someone who's shipped production AI. 🔵 PROVEN RESULTS ◈ AxlCoach - AI Twin for Professional Coaches (live on App Store) AI-powered coaching platform · React Native · Python / FastAPI LLM orchestration · RAG · Voice/Video pipelines (CosyVoice, LatentSync) 70-85% routine questions automated · 2-3× higher engagement Multi-agent system: sport, strength, nutrition, recovery coaches Apple Health, Google Health, Garmin, Whoop, Oura integration ◈ Sfera24 - Multi-Vendor Marketplace (Europe) React / Next.js · TypeScript · Node.js · PostgreSQL Real-time booking · Stripe Connect · 10,000+ monthly bookings Multi-country launch · Clean scalable architecture ◈ Gettask24 - Service Marketplace Two-role system · 5,000+ users · Real-time chat Java / Spring Boot · React · PostgreSQL · Redis Full CI/CD · AWS infrastructure ◈ CryptaCount - Crypto Accounting Platform Python / FastAPI · React / Next.js · PostgreSQL 90+ blockchain networks · DeFi (staking, LPs, lending, bridges) Double-entry accounting · Audit trails · Cost basis (FIFO/LIFO/HIFO) 73 tax jurisdictions · IFRS, DAC8, MiCA, CARF compliance ◈ [NDA] - AI Logistics Dispatch Platform GPS tracking · Route optimization · Driver ETA React Native · Node.js · Google Maps API Real-time fleet management · Production-ready MVP 🟠 WHAT I BUILD → AI Agents & LLM Systems Agentic workflows · RAG pipelines · Vector search LangChain · OpenAI / Anthropic / Gemini Voice/Video generation · Real-time AI pipelines → Full-Stack & Mobile React / Next.js · TypeScript · Python / FastAPI React Native · Flutter · Node.js · Java / Spring Boot → FinTech & Blockchain 90+ blockchain integrations · DeFi · Smart contracts Tax compliance · Audit trails · Multi-jurisdiction reporting → Marketplaces & Booking Multi-vendor · Real-time scheduling · Payments Stripe Connect · Two-role systems · Admin panels → AI-Powered Automation Document processing · Lead qualification Workflow orchestration · Human-in-the-loop approval systems 🟡 TECH STACK Backend: Java / Spring Boot · Python / FastAPI · Node.js · SQLAlchemy Frontend: React / Next.js · TypeScript · Redux · Tailwind CSS Mobile: React Native · Flutter AI/LLM: LangChain · OpenAI · Anthropic · Gemini · CosyVoice · LatentSync · Real-ESRGAN · Hugging Face Databases: PostgreSQL · MySQL · Redis · pgvector Message Queues: RabbitMQ · Kafka · Celery Cloud & DevOps: AWS (EC2/ECS/EKS/S3/RDS/Lambda) · Docker · Kubernetes · Terraform · GitHub Actions · CI/CD Monitoring: Prometheus · Grafana · Sentry