Serhii Muzyka

Overview
I build AI-powered systems and backend architectures designed for reliability and scale. My approach focuses on "The Last Mile"—moving beyond simple AI prototypes into production-ready tools that handle real-world data, exceptions, and high-concurrency environments.

What I Solve for You:
Advanced RAG Pipelines: Implementing Retrieval-Augmented Generation that actually works. I use FAISS and LangChain to build context-aware systems with long-term memory that don't lose the plot in multi-turn conversations.
Agentic Workflows: Developing ReAct-style agents capable of autonomous tool selection (search, API calls, database execution) using FastAPI and LangGraph.
Mission-Critical Backends: Drawing from my experience in industrial IoT (monitoring 100+ sensors and cameras), I build async Python services that are fault-isolated and highly resilient.
Human-in-the-Loop (HITL) Automation: Creating systems that automate 90% of a workflow while providing a clean interface for human oversight.

Technical Expertise:
Languages/Frameworks: Python (Async), FastAPI, Flask, LangChain, SQLAlchemy.
AI/LLM: RAG, Vector Databases (FAISS), Agent Orchestration, Prompt Engineering.
Infrastructure: Docker, Prometheus, Grafana (Real-time monitoring & observability), PostgreSQL.

I prefer high-autonomy, milestone-based projects. I provide clean, documented code and a "think-before-build" mindset to ensure we don't just solve the task, but improve the system. Available for short-term sprints (2-6 weeks) or project-based milestones. Open to direct negotiation and Cryptocurrency payments.