Open to opportunities

Martin Mrňák

@martinmrk

Message

I build Python data pipelines and developer tools that automate critical engineering workflows.

Czechia

Message

What I'm looking for

I'm looking to build reliable Python software, data pipelines, and automation tools while contributing to architecture, design, testing, and practical problem-solving.

At ZF Engineering Pilsen, I build and maintain dozens of production ETL pipelines, including two business-critical pipelines, moving data from multiple source systems into MongoDB and a TB-scale MSSQL warehouse.

I develop Python-based Airflow workflows connecting Apache Airflow, MSSQL, MongoDB, REST APIs, Trino, and OpenAPI services. I also create internal DevOps tools that automate work for developers and other teams, contributing to software architecture and owning individual tools.

Alongside this work, I develop internal and customer software at Connectica, where I contribute to architectural decisions, software design, testing, maintenance, customer communication, and support.

My personal projects include a scientific X-ray scattering analysis application adopted by two researchers for thesis work, and laboratory data-ingestion automation that eliminated repetitive manual entry.

Experience

Work history, roles, and key accomplishments

Current

Software Tools Developer / Data Engineer

Current

ZF Engineering Pilsen s.r.o.

Apr 2023 - Present (3 years 5 months)

Develops and maintains data pipelines in Python via Airflow, ingesting from multiple source systems into MongoDB and a TB-scale MSSQL warehouse. Also develops internal Python tools for the DevOps team and owns individual software architecture designs.