Maksym Holovin Senior Python Data Engineer | 6+ years in fintech | Real-time pipelines & LLM agents

Why should you work with me ?

Senior Python Engineer with 6+ years of experience building data infrastructure for fintech companies. I design and implement real-time market data ingestion pipelines handling FIX and ITCH protocols, high-throughput trade data pipelines with PySpark, and cloud-native ETL systems on AWS (Lambda, Glue, S3, SQS) feeding into Snowflake and ClickHouse.

My background spans production systems at London Stock Exchange Group (via Luxoft) and Quod Financial, where I maintained FIX gateways and built low-latency data infrastructure for trading systems. As a freelancer since 2025, I've delivered custom data ingestion modules, fraud detection pipelines, and anti-abuse systems for multiple fintech clients.

More recently, I've extended into LLM-based agentic systems, building a production conversational tool with LangChain/LangGraph that performs full database CRUD operations via tool calling — combining my data infrastructure background with modern AI application development.

I'm comfortable owning projects end-to-end: architecture, implementation, testing, and production debugging, using config-driven and event-driven design patterns to keep systems maintainable and scalable.