Tobias Sarnowski
Director Of Information Security & Architecture (CISO)
Berlin Metropolitan Area Germany
Summary
👤
Senior🎓
Top SchoolTobias Sarnowski is a seasoned Director of Information Security & Architecture (CISO) based in Berlin with 14 years of professional experience and a software development background dating to 1997. He combines deep low-level knowledge—from OS internals and assembler to modern cloud platforms and Clojure—with pragmatic security and distributed-systems expertise to design simple, scalable, and secure solutions for large technical and organizational deployments. At GROPYUS and previously Zalando, he has led security architecture, IAM, and cloud infrastructure efforts, translating stakeholder requirements into auditable technical outcomes without conflating needs with implementation. Tobias also contributes to open-source quality assurance, having built foundational integration tests for the widely used DokuWiki project, reflecting a focus on reliability and testability. Colleagues benefit from his rare full-stack perspective that spans code, infrastructure, and policy, enabling him to find minimal yet robust approaches to complex problems. He pairs hands-on engineering instincts with leadership that prioritizes clarity, security, and operational scalability.
14 years of coding experience
15 years of employment as a software developer
Fachinformatiker für Anwendungsentwicklung, Computer Software Engineering, Fachinformatiker für Anwendungsentwicklung, Computer Software Engineering at Oberstufenzentrum Informationstechnik und Medizintechnik Berlin
English, German
Github Skills (6)
wiki-engine10
php10
dokuwiki10
integration-testing10
testing10
phpunit9
Programming languages (11)
Github contributions (5)
dokuwiki/dokuwiki
Apr 2012 - Apr 2012
The DokuWiki Open Source Wiki Engine
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:13 commits in 3 days
Contributions summary:Tobias primarily contributed to the integration test framework for DokuWiki. Their initial commit established the foundation for integration tests, creating a `TestRequest` class to simulate HTTP requests and inspect the output. Subsequent commits expanded the testing suite, introducing tests for hooks, basic functionality, and scope verification, demonstrating the user's focus on ensuring the correct behavior of the wiki engine. Further commits focused on improving the test setup and integration.
wiki-enginetiddlywikiphpmediawiki-extensioneagle
sarnowski/generic-ci
Mar 2012 - Apr 2014
Contributions:28 commits in 2 years 1 month
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