Marceli Olszewski
Software Engineer at Coders Lab
Ostrów Wielkopolski, Greater Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolMarceli Olszewski is a software engineer with nine years of experience building front-end focused products and cloud-integrated applications, currently contributing to Vonage's communications platform. He blends hands-on engineering with teaching—serving as a lecturer, mentor, and educational content author at Coders Lab—bringing rare clarity to complex frontend and UX problems. Past roles include frontend engineering at Cavai and multi-channel development (web, mobile, chatbots) for agencies and health tech, demonstrating versatility across B2B and consumer-facing projects. He holds a postgraduate credential in IT systems auditing, pairing development skills with an auditor’s mindset for secure, maintainable code. Based in Ostrów Wielkopolski, Poland, Marceli is equally comfortable shipping production features and shaping curricula, often translating real-world engineering trade-offs into practical lessons for new developers. Outside work he signals a playful, active personality—lecturing by day and staying physically active off-hours.
9 years of coding experience
8 years of employment as a software developer
Licencjat (Lic.) Informatyka spec. Informatyka w biznesie, Licencjat (Lic.) Informatyka spec. Informatyka w biznesie at University of LodzStudia podyplomowe Audyt systemów informatycznych, Studia podyplomowe Audyt systemów informatycznych at Wroclaw University of Economics and Business
English
Github Skills (1)
sanity8
Programming languages (3)
Github contributions (5)
Cavai/Sanity
May 2022 - Dec 2022
Bring sanity to working with Github
Contributions:1 review, 53 commits, 21 PRs in 7 months
sanity
Cavai/ld-action
Jun 2021 - Jan 2022
Launch Darkly create flag on comment
Contributions:1 PR, 31 pushes, 1 branch in 7 months
launch-darklydarkly
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