Summary
Robert Szefler is a seasoned Python backend engineer with nearly two decades of hands-on experience evolving from Python 2.4-era deployments to modern Kubernetes-native observability and operations. He has repeatedly led and scaled backend teams and systems across startups, mid-size firms and large corporations, contributing to products from mobile security and game backends to cloud storage and public transport solutions. Comfortable with the full backend stack—Django/Pyramid, Celery, PostgreSQL, Elasticsearch and performance-critical C++ integrations—he combines pragmatic engineering with systems-level thinking. Based in Warsaw, he brings a proven track record of shipping reliable, production-grade software and migrating legacy systems to maintainable Python platforms. A detail not obvious from titles: he’s worked on both heavy numeric optimization and large-scale media backends, showing rare breadth between compute-intensive and high-throughput systems.
11 years of coding experience
15 years of employment as a software developer
Mathematics and Computer Science, Mathematics and Computer Science at University of Warsaw
English, Polish