Mateusz Lenik
Security Engineer at Google
Zürich Metropolitan Area Switzerland
Summary
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Rockstar🎓
Top SchoolMateusz Lenik is a Security Engineer based in the Zürich area with 15 years of hands-on experience building and hardening web applications and Linux infrastructure. He blends deep offensive/defensive security knowledge from a master’s in information security with pragmatic engineering skills honed across Google and multiple Ruby/JavaScript-heavy startups. At Google since 2018 he applies large-scale security practices, while his open-source work—improving the distributed Gush workflow runner—shows a knack for reliable backend orchestration and observability. Comfortable from low-level UNIX administration to designing fault-tolerant job dependencies, he brings both operator instincts and software craftsmanship to complex systems. Notably, his background includes organizing conference networks and shipping production-ready DevOps solutions, reflecting a hands-on approach to reliability and developer experience.
15 years of coding experience
6 years of employment as a software developer
Master of Science (MSc), Computer Science, Master of Science (MSc), Computer Science at Politechnika WrocławskaMaster of Science (MS), Computer and Information Systems Security/Information Assurance, Master of Science (MS), Computer and Information Systems Security/Information Assurance at Blekinge Institute of Technology
English, Polish
Github Skills (6)
workflow-engine10
redis10
ruby10
testing9
queue8
sidekiq8
Programming languages (20)
Github contributions (5)
chaps-io/gush
Jul 2014 - May 2015
Fast and distributed workflow runner using ActiveJob and Redis
Role in this project:
Back-end Developer
Back-end DeveloperContributions:48 commits, 1 PR, 1 comment in 10 months
Contributions summary:Mateusz primarily focused on improving the functionality and maintainability of the Gush workflow runner. They made changes to the core workflow logic, specifically improving the handling of job dependencies and state management. The user added a DSL to inject a logger into jobs, improving the ability to debug and monitor. They also fixed bugs and improved the reliability of the system through specification fixes, improving the overall performance of the workflow execution.
workflowdistributedredisparallelqueues
mlen/sequel_secure_password
Sep 2012 - Oct 2017
Plugin that adds BCrypt authentication and password hashing to Sequel models.
Contributions:56 commits, 5 PRs, 13 pushes in 5 years 1 month
hashingsequelbcryptauthenticationpassword
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