Matthieu Zhang
Senior Software Engineer at Datadog
Greater Paris Metropolitan Region France
Summary
🤩
Rockstar🎓
Top SchoolMatthieu Zhang is a software engineer with four years of experience building reliable, security-focused systems across fast-moving companies like Datadog, PayFit, GitGuardian, and Amazon. He has deep hands-on experience in secret detection and IaC security—contributing to GitGuardian's widely used ggshield project to improve scanning, CI/CD integration, and developer UX. At PayFit and GitGuardian he shipped automation and new product verticals, and at Amazon he supported high-impact Covid-response and Prime Air initiatives, demonstrating comfort with both mission-critical and experimental systems. Trained at École Polytechnique and the Technical University of Munich, he blends strong engineering fundamentals with practical product delivery. Colleagues value his focus on error handling and output clarity—small improvements that significantly raise developer trust in security tooling. Based in Greater Paris, he brings a pragmatic security-minded engineering approach that helps teams scale safely.
4 years of coding experience
4 years of employment as a software developer
Diplôme d'ingénieur, Diplôme d'ingénieur at École PolytechniqueMaster en informatique, Computer Science, Master en informatique, Computer Science at Technical University of MunichClasse Préparatoire MPSI puis MP*, Classe Préparatoire MPSI puis MP* at Lycée Privée Sainte-GenevièveBaccalauréat (American International Option), Baccalauréat (American International Option) at Centre International de Valbonne
French, English, Chinese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (11)
testing10
secret-management10
secrets-manager10
devsecops10
pytest10
ias10
python10
secrets10
cicd10
security10
json8
Programming languages (3)
Github contributions (5)
GitGuardian/ggshield
May 2022 - Aug 2022
Detect and validate 500+ types of hardcoded secrets with advanced checks. Use it as a pre-commit hook, GitHub Action, or CLI for proactive secret detection and security.
Role in this project:
Security Engineer
Security EngineerContributions:32 reviews, 21 commits, 21 PRs in 3 months
Contributions summary:Matthieu primarily contributed to the development and improvement of secret detection and management features within the `ggshield` repository. Their work involved implementing and refining functionality related to IaC (Infrastructure as Code) file scanning, including filtering, and the integration with CI/CD pipelines. They also focused on improving the output handling, enhancing error management, and enhancing the overall user experience.
clipre-commit-hooksecuritydevsecopscredentials
zhangmatthieu/ggshield
May 2022 - May 2022
Detect secrets in source code, scan your repositories for leaks. Find secrets with GitGuardian and prevent leaked credentials. GitGuardian is an automated secrets detection & remediation service.
Contributions:28 pushes, 6 branches in 18 days
scansecrets-detectionbugbountycredentialsleaks
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