Lead Data Engineer · 9+ years

Aleksandr Andreev

I build streaming, lakehouse and applied-AI platforms at production scale — Kafka, Flink, Spark, Iceberg, Trino and the tooling that keeps them reliable.

Selected work

Article

DuckDB httpfs column pushdown over Parquet on S3

DuckDB pushes column projection and filter predicates down to S3 Parquet reads — but only if your file stats are valid.

duckdb parquet s3

1 min read

Project

GitLab MR Review Agent

LLM-powered code review bot using FastAPI, Qdrant, Claude API, and RAG over Confluence. Reduced review turnaround by 40%.

llm rag fastapi python qdrant

3 min read