Grzegorz Siewruk
Cloud Security Team Lead at Orange Polska
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolGrzegorz Siewruk is a Cloud Security Team Lead with a decade of experience securing CI/CD pipelines and defining enterprise security policies at Orange Polska. He blends hands-on Java development and vulnerability tooling expertise—contributing to the Mixeway project—with deep experience in SAST/DAST orchestration and end-to-end security assurance. His work spans secure design reviews, source code audits across PHP, Java, .NET and Android, and implementing compliance and automated vulnerability testing in production workflows. A telecommunications-trained engineer with an MSc and ongoing PhD focus in computer science, he brings rigorous academic grounding to practical security problems. Colleagues know him for turning complex security requirements into auditable, automated processes that scale across teams. Based in Warsaw, he pairs developer instincts with pragmatic leadership to harden cloud-native delivery at enterprise scale.
10 years of coding experience
3 years of employment as a software developer
Bachelor's degree, Telecommunications Engineering, Bachelor's degree, Telecommunications Engineering at Warsaw University of Technology
Github Skills (160)
dependency-track10
backend10
docker-compose10
x50910
openvas10
plug10
cycle10
cyclonedx9
compose9
chain9
owasp9
risk-assessment9
sca9
vulnerabilities9
devsecops9
Programming languages (9)
Github contributions (5)
Mixeway/MixewayBackend
Jan 2020 - Feb 2023
Mixeway is security orchestrator for vulnerability scanners which enable easy plug in integration with CICD pipelines. MixewayBackend project contains source code of backend with all plugin integrations writer in Spring Boot.
Contributions:5 reviews, 106 commits, 98 PRs in 3 years 1 month
vulnerability-managementvulnerability-scannersscannersspringrest-api
Mixeway/Flow
Aug 2024 - Apr 2025
Contributions:8 releases, 10 PRs, 125 pushes in 7 months
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