Michał Kałużny is a Senior Software Engineer based in San Francisco with 13 years of hands-on experience building reliable mobile and backend systems. Currently at Apple, he brings deep iOS expertise from roles at Clue, BlaBlaCar and Macoscope where he shipped major features, modernized codebases, and improved CI and performance. He contributes to notable open-source tooling—working on the Danger project to improve CI/CD integrations and review automation—blending backend and DevOps skills with mobile engineering. Comfortable across Obj‑C and Swift as well as server-side tooling, he pairs product-focused collaboration with designers and PMs with pragmatic engineering. A former server administrator and PHP developer, he retains strong operational instincts that help bridge development and production.
13 years of coding experience
6 years of employment as a software developer
II Liceum Ogólnokształcące w Łodzi
Informatyka, Informatyka at Lodz University of Technology
🚫 Stop saying "you forgot to …" in code review (in Ruby)
Role in this project:
Back-end Developer & DevOps Engineer
Contributions:26 commits, 13 PRs, 13 pushes in 1 month
Contributions summary:Michał primarily focused on improving the Danger tool's core functionality and integrating it with various CI/CD systems. They implemented a base class for request sources, added helper methods for Git operations, and refactored the code to support different CI sources by specifying supported request sources. The user also updated and fixed existing specs and test running.
Contributions:1 release, 12 commits, 4 PRs in 1 year 1 month
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Michał Kałużny - Senior Software Engineer at Apple