Mateusz Śpiewak
Lead Software Developer at Cosm
Krakow, Lesser Poland Voivodeship
Summary
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SeniorMateusz Śpiewak is a Lead Software Developer with 11 years of experience building scalable systems for major media brands like FOX, FX, FXX, and National Geographic and currently driving immersive shared-reality experiences at Cosm. He blends backend and frontend expertise—favoring Rust and TypeScript—across distributed systems, search and NoSQL datastores, container orchestration, and modern front-end stacks. Mateusz has led architecture, documentation, and delivery for platforms serving hundreds of thousands of users and has worked remotely with global clients since 2013. As a hands-on team leader he focuses on pushing design and tech boundaries rather than maintaining JavaScript-first roles, signaling a move toward systems-level engineering. Based in Krakow, he pairs production-grade engineering with a curiosity for new interaction paradigms in entertainment and education.
11 years of coding experience
11 years of employment as a software developer
Polish, English
Github Skills (166)
growl10
aws-sdk10
sdk9
toast9
notification9
mongodb-driver9
webview9
webpages9
aws9
artillery9
player9
video-player9
rust8
html5-video8
high-performance8
Programming languages (9)
Github contributions (5)
singerxt/ElasticModels
Sep 2016 - Dec 2016
Contributions:40 commits, 38 pushes, 2 issues in 3 months
singerxt/learning
Jan 2019 - Mar 2019
Contributions:50 commits, 43 pushes, 1 branch in 1 month
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