Michal Melewski

Principal Security Engineer

Zurich, Switzerland

About

Experienced Security Engineer focusing on finding and eliminating security vulnerabilities at scale. Previously responsible for penetration testing and web security assessment. Currently focused on low level security, virtualization and security mitigations. Rust aficionado. Fuzzing enthusiast. Incompetent exploit writer.

Experience

  • Security Engineer at Jump Trading Group
    Sep 2025 - Present · 11 mos

  • Principal Security Engineer at Cloudflare
    Sep 2022 - Sep 2025 · 3 yrs 1 mo

  • Senior Security Engineer at Google
    Jun 2012 - Aug 2022 · 10 yrs 3 mos

    Member of Information Security Engineering team. Responsible for finding and eliminating security vulnerabilities. At scale.

  • Betfair (1 yr 5 mos)
    • Senior Application Security Analyst
      Sep 2011 - May 2012 · 9 mos

    • Application Security Analyst
      Jan 2011 - Sep 2011 · 9 mos

      Internal penetration tests and security assessments Managing security assessments/penetration test program Threat modelling for new systems + all other security stuff

  • IT Security Expert at Alior Bank
    Mar 2008 - Jan 2011 · 2 yrs 11 mos

    Member of the IT security department, responsible for: - Internal penetration testing of Bank IT Systems - Preparing Penetration Testing Methodology - Security audits - Threat modeling for new IT systems - Designing IT systems (security) - Preparing IT security standards and requirements