Karel Čemus
Senior Scala Engineer at Chili Piper
Prague, Prague, Czechia
Summary
👤
Senior🎓
Top SchoolKarel Čemus is a Senior Scala Engineer with 15 years of experience, specializing in microservices and web applications built on Akka and Play, currently based in Prague and open to Scala roles in Prague or fully remote. He combines deep academic grounding (PhD from Czech Technical University and research visit to Baylor University) with hands-on production work, from high-throughput trading systems to tailored e-commerce platforms. Karel focuses on clean architecture, declarative and self-explaining code, and pragmatic reliability—skills honed while designing core trading services that handled real-time data and fail-safe requirements. An active open-source contributor, he authored the play-redis Scala library and has contributed to projects like Aspect-Faces and ZK-DL. Colleagues rely on him as a mentor and architecture visionary who emphasizes performance, maintainability, and DevOps-friendly workflows.
15 years of coding experience
12 years of employment as a software developer
Doctor of Philosophy (Ph.D.), Information Science and Computer Engineering, Doctor of Philosophy (Ph.D.), Information Science and Computer Engineering at Czech Technical University in Prague, Faculty of Electrical EngineeringSoftware engineering, Software engineering at Baylor University
Czech, English
Github Skills (200)
saml10
authentication10
security10
logout10
streaming10
auth10
twitter10
reactive10
internationalization10
akka10
localization10
nested-lists10
akka-streams10
sql10
jwt10
Programming languages (8)
Github contributions (5)
KarelCemus/play-toolkit
Apr 2015 - Jan 2018
Contributions:8 PRs, 90 pushes, 16 branches in 2 years 9 months
enhancementsplay-framework
KarelCemus/play-json
Dec 2015 - Feb 2018
Contributions:1 release, 72 PRs, 88 pushes in 2 years 3 months
context-awareplay-frameworkjson
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