Penetration Testing Lead

2 days ago


Stockholm, Stockholm, Sweden Klarna Full time

We're looking for a seasoned professional to lead our penetration testing efforts and contribute to the development of our security program. As a Senior Offensive Security Engineer, you will be responsible for conducting white-box and black-box penetration testing, managing bug bounty submissions, and performing variant analysis on issues discovered through all channels.

The ideal candidate will have a strong background in penetration testing and technical security assessments, with experience identifying security issues in code, particularly within Java and Node.js. They will also be comfortable communicating findings clearly and effectively, with concrete remediation recommendations beyond simple issue reporting.

Requirements:
  • Strong experience with penetration testing and other technical security assessments.
  • Experience identifying security issues in code, particularly within Java and Node.js.
  • Experience with cloud environments, particularly AWS and modern micro-service design principles.
  • Comfortable communicating findings clearly and effectively, with concrete remediation recommendations beyond simple issue reporting.
  • Comfortable scripting and contributing to larger projects in Python.
  • Able to take the initiative and be comfortable taking on projects that contribute to the larger security culture and posture at Klarna.
  • Industry recognized certifications, e.g., OSCP, OSWE, CREST, GIAC, AWS, etc.
  • CTF Participation and active contributions to the cybersecurity community.


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