Mariusz Śpiewak
Senior Software Engineer at DuckDuckGo
Krakow, Lesser Poland Voivodeship
Summary
🤩
Rockstar🎓
Top SchoolMariusz Śpiewak is a Senior iOS Software Engineer with 10 years of hands-on experience building polished mobile experiences and leading engineering teams across startups and scale-ups. He has progressed from early iOS development and game work to leadership roles at Brainly and now contributes to privacy-focused product development at DuckDuckGo. Known for tackling non-trivial technical challenges while obsessing over simple, crisp UI and exceptional user experience, he blends engineering rigor with design sensitivity. Based in Krakow, he pairs an M.Sc. in Information Technology with a track record of shipping production iOS apps and managing App Store lifecycles—skills that make him comfortable from architecture to final polish.
10 years of coding experience
13 years of employment as a software developer
Master of Science (M.Sc.), Information Technology (Information and Communication Technologies), Master of Science (M.Sc.), Information Technology (Information and Communication Technologies) at Politechnika Krakowska im. Tadeusza Kościuszkiengineer, Electronics, engineer, Electronics at Zespół Szkół Elektronicznych im. Bohaterów Westerplatte
English, Polish
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (7)
duckduckgo10
privacy10
ios10
ios-application10
swift9
objective-c9
macos8
Programming languages (4)
Github contributions (5)
dus7/DynamicLayoutCell
Feb 2018 - Feb 2018
Contributions:3 pushes, 1 branch in 12 days
duckduckgo/DesignResourcesKit
Apr 2024 - Apr 2025
Contributions:3 releases, 4 reviews, 8 PRs in 11 months
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