Marcin Sadowski
Backend Engineer at NextMotion
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolMarcin Sadowski is a backend engineer with a decade of experience building fast, resilient and cost-efficient systems that "just keep running." He specializes in Python/Django services and operational tooling on AWS/Linux, with deep practical knowledge of networking and traffic stacks (BIND, HAProxy, Varnish, NGINX) and async/data systems (PostgreSQL, Celery, RabbitMQ, Redis). Marcin has a track record of tackling real-world bottlenecks—tuning memory allocators to eliminate OOMs, tailoring concurrency profiles to avoid costly refactors, and reworking booking algorithms to cut response times from seconds to a few hundred milliseconds. Comfortable across infra and application layers, he prioritizes well-documented, automatable solutions that scale without drama. Based in Warsaw, he pairs engineering rigor with a preference for “boring” reliability, often solving systemic issues that are easy to miss until they fail.
11 years of coding experience
Engineer's degree, Computer Software Engineering, Engineer's degree, Computer Software Engineering at Warszawska Wyższa Szkoła Informatyki
Polish, English
Stackoverflow
69reputation
59kreached
3answers
2questions
Github Skills (113)
pnpm10
menu10
e2e10
react-native-component10
android10
dropdown10
ios10
react-native10
docusaurus10
react10
javascript9
push-notifications9
ai9
cli9
react-native-app9
Programming languages (6)
Github contributions (5)
gitsad/artisan-static
Oct 2018 - Feb 2022
Contributions:2 PRs, 1 push, 3 branches in 3 years 5 months
MobileReality/gatsby
Aug 2024 - Oct 2024
Contributions:12 reviews, 3 PRs, 5 pushes in 1 month
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