XBOW

Pentester

XBOW

full-time

Posted on:

Location Type: Remote

Location: Germany

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Tech Stack

About the role

  • Triage output from our AI offensive engine, validating real vulnerabilities and separating signal from noise.
  • Vulnerability analysis of false positives to identify root causes, improve detection logic, and refine model behavior.
  • Collaborate with Product, R&D, and AI teams to provide structured feedback on exploit quality, edge cases, and system behavior.
  • Analyze discovered vulnerabilities in depth and support AI driven reporting.
  • Support customers by helping them understand findings, reproduce issues, and validate impacts.
  • Develop repeatable methodologies for evaluating exploit chains, proof-of-concept behavior, and attack patterns.
  • Own investigations end-to-end, from initial triage to deep-dive analysis to final recommendations for fix or model improvement.
  • Continuously research new vulnerability classes, exploitation techniques, and reverse engineering workflows to help evolve the platform.

Requirements

  • Deep hands-on penetration testing experience, primarily in application, web and cloud
  • Experience validating and reproducing vulnerabilities, including crafting PoCs and assessing exploitability.
  • Strong ability to distinguish real issues from false positives, with a methodical and evidence-driven mindset.
  • Experience with common offensive tooling (Burp, Nmap, Metasploit, Ghidra, IDA, custom scripts, etc.).
  • Strong written communication skills - able to clearly articulate technical findings to both engineers and customers.
  • Comfort working in fast-moving, ambiguous environments where problems are not fully defined.
  • Curiosity, adaptability, and a willingness to dive deep and learn continuously.
  • Prior experience collaborating closely with software engineering, research, or product teams.
  • Background in exploit development, fuzzing, or vulnerability research.
  • Experience with large-scale systems, cloud environments, or CI/CD security.
  • Experience contributing to or building offensive security tooling.
  • Prior work in an early-stage startup or a high-velocity research environment.
  • Experience in customer-facing technical roles and/or consulting.
Benefits
  • Competitive salary and a generous equity package, making you a true owner of the company.
  • Shape your role, influence product direction, and grow with the company as we redefine cybersecurity.
  • You will work on some of the most technically challenging problems in security and help define how AI transforms offensive security - alongside world-class engineers, researchers, and hackers.
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
penetration testingvulnerability analysisexploit developmentfuzzingvulnerability researchexploitability assessmentproof-of-concept (PoC) craftinglarge-scale systems securitycloud securityCI/CD security
Soft Skills
strong written communicationmethodical mindsetevidence-driven approachcuriosityadaptabilityproblem-solvingcollaborationcustomer-facing skillsability to work in ambiguitycontinuous learning