Senior Software Security Expert (SSSE)

ZIONSECURITY is looking for a motivated Senior Software Security Expert. The Senior Software Security Expert (SSE) is responsible for web application testing, source code analysis, manual pen testing, SDLC coaching and training.
The SSE will help our customers to detect their security vulnerabilities, triage them and help to solve or mitigate the business risks using manual and automated tools. You will help our customer to define and install a Secure Development Lifecycle in an agile way of working.


  • Minimal 4 years of experience in Information Security
  • Vulnerability Research & Exploit Development
  • Penetration Testing Execution Standard Automation Framework (PTES)
  • Experience with coaching and training in application security of developers
  • Development experience in languages like Java, Python, Ruby, PHP, .Net, Angular, Android, iOS,...
  • Penetration Testing - WebInspect, Acunetix, Netsparker Appscan, Fortify, Checkmarx, Veracode, Burp Suite, NMAP, Nessus, Metasploit, Core Impact, Qualys, Kali Linux, Samurai WTF, OWASP ZAP, SQLMap and manual testing


  • Red Team Operations
  • Experience with debugging and fuzzing
  • OWASP Top 10 security testing methodology
  • ISO 27034
  • Experience with SDLC like Agile, DevOps & Waterfall
  • Software development experience


  • OSCP - Offensive Security Certified Professional
  • GXPN - Exploit Researcher and Advanced Penetration Tester


  • Bachelor or Master in Computerscience or proven hands-on experience
  • GIAC Penetration Tester (GPEN)

What we offer

  • A no-nonsense culture, with experienced colleagues who can help you progress in your career as a penetration tester
  • An attractive and market-aligned reward package including company car and health insurance
  • Due to recent merge with SecureLink we are now proud to be part of the leading independent cyber security and managed security services provider in Europe. Despite the growth, we highly value a friendly atmosphere and happy colleagues, combined with some pleasant after work events.