Sergey.
Full-Stack Developer
NestJS · Angular · AI Integrations
About me
I build production-ready backend systems and AI-powered products that solve real business problems. With 10+ years in full-stack development, I specialise in NestJS microservices, Angular frontends, and LLM integrations that actually ship. I care deeply about clean architecture, fast delivery, and measurable outcomes.
Services
Backend & API development
NestJS microservices, REST/GraphQL APIs, auth, background jobs.
AI / RAG integrations
LLM pipelines, vector search, Telegram bots, n8n automations.
Full-stack product delivery
End-to-end Angular + NestJS apps, CI/CD, Docker, cloud deploy.
Selected work
Fintech lead platform
B2B lead processing pipeline for 50k+ contacts with AI categorisation.
AI neighborhood analyzer
Telegram bot + NestJS scoring OSM/Overpass data for relocation decisions.
RAG website bot
n8n + Qdrant + OpenAI embeddings chatbot with lead-gen trigger logic.
Get in touch
Let's build something together.
Got a project in mind? I'm available for freelance engagements. Reach out via email and I'll get back to you within 24 hours.