Sebastian Marzjan
Director Of Engineering at PayPal
Stockholm, Sweden
Summary
👤
Senior🎓
Top SchoolSebastian Marzjan is a Director of Engineering with 12+ years of experience building and scaling engineering organisations across payments, e‑commerce, consumer platforms and infrastructure. He has led teams of 60–130+ engineers at Klarna and now directs Seller Lifecycle engineering at PayPal, owning merchant onboarding, activation flows and platform capabilities for operating services at scale. Known for combining strong technical standards with people-first leadership, he focuses on developer experience, CI/CD, data quality and cross-functional delivery. His background spans UGC sites, reservation systems, full‑text search and mobile apps — a breadth that helps him translate product needs into robust engineering practices. Based in Stockholm, he pairs hands-on architecture instincts with a talent for growing senior leaders and improving organizational performance. An early entrepreneur, he also founded and shipped commercial reservation and e‑commerce systems, which informs his pragmatic approach to product engineering.
12 years of coding experience
14 years of employment as a software developer
Master's degree in Computer Science Computer Science, Master's degree in Computer Science Computer Science at Lodz University of Technology
Polish, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (16)
php10
mediawiki10
wikia9
parsoid7
web-application7
mediawiki-extension5
api4
gerrit4
klarna2
mobile-web2
flutter-plugin1
dart1
sdk1
android1
react1
Programming languages (5)
Github contributions (5)
SebastianMarzjan/dashboard
Jul 2015 - Jul 2015
Contributions:5 pushes, 1 branch in 24 days
sebastianmarzjan/skill-sample-nodejs-audio-player
Feb 2017 - Feb 2017
Contributions:9 pushes, 1 branch in 1 day
audiolongalexaalexa-skillskill-sample
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