Rafał Ziomek
Senior .Net Developer at JMR Technologies
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolRafał Ziomek is a Senior .NET Developer and lead engineer with eight years of experience building scalable, resilient systems across distributed, desktop, and cloud environments. He currently leads architecture and delivery at JMR Technologies, guiding teams, mentoring developers, and driving migrations from fragmented legacy systems to modern, observable platforms. Rafał has hands-on expertise in .NET 8, event sourcing, Docker/Kubernetes, Azure, Prometheus/Grafana, and WPF, and has delivered a distributed file-sync platform, modular plugin architectures, and a bespoke SQL reporting engine that simplified analysts’ workflows. His academic background in computer science, cognitive science, and psychology gives him a unique edge in balancing system-level design with user-centric considerations and UX-informed decisions. Outside of work he builds his own product, composes music, and studies French and Italian, reflecting a creative approach that informs his engineering.
8 years of coding experience
Warsaw University of TechnologyKognitywistyka, Kognitywistyka at Uniwersytet Warszawski
Stackoverflow
1,080reputation
177kreached
18answers
5questions
Github Skills (18)
react-typescript7
gatsbyjs6
django-admin6
shell6
django-views6
django-models6
django-forms6
docker6
python6
django6
docker-compose6
react5
parsing5
styled-components3
gatsby3
Programming languages (5)
Github contributions (5)
rafaljusiak/python-env-loader
Jan 2020 - Jan 2021
Reads the variables from .env files in similar way that is used in React.js and adds them to environment variables, automatically guessing and parsing to correct types in Python.
Contributions:4 releases, 17 commits, 1 PR in 11 months
parsingpythonreact
rafaljusiak/personal-page
Feb 2021 - Oct 2025
My personal page created with TypeScript, React and Gatsby
Contributions:6 pushes in 4 years 8 months
gatsbyreactpersonal-pagestyled-componentsgatsbyjs
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