Application Security Research Engineer

Commit; Barcelona; On-site; EUR 90,000 - 130,000; Full time

Job summary

Commit in Barcelona is seeking an Applications Security Research Engineer to join a team of researchers and ethical hackers focused on offensive security testing, automated exploit discovery, and advanced application security research. You will shape security posture across products and drive secure-by-design principles.

This hands-on role emphasizes offensive security, code exploitation, automation, and innovation, with collaboration across engineering teams to triage and fix vulnerabilities

Qualifications

• 5+ year experience in Research and penetration testing.
• Strong coding skills and deep technical understanding of web, API, cloud-native, and backend technologies.
• AI and LLM Penetration testing knowldge and Experience
• Experience with penetration testing tools (Burp Suite, Metasploit, etc.) and Custom Security Tools development.
• Familiarity with modern architectures (e.g., Cloud, microservices, containers, Kubernetes).
• Familiarity with secure software architecture and typical attack vectors.
• Demonstrated ability to lead security testing engagements and report technical findings effectively.
• Experience building or integrating automated PT or fuzzing pipelines is a strong advantage.
• Knowledge and hands-on experience with SSDLC tools and CI/CD pipelines,
• Publications or open-source contributions in the security domain are a plus.

Responsibilities

• Help to reshape company Product Security
• Plan and execute advanced penetration testing campaigns.
• Develop tools and frameworks for scalable security testing and fuzzing.
• Lead Security innovation by building and managing penetration testing tools \ AI Agents
• Analyze vulnerabilities, perform root cause analysis, and develop proofs of concept.
• Identify systemic product weaknesses and help define long-term mitigations.
• Collaborate with engineering teams to reproduce, triage, and fix vulnerabilities.
• Contribute to security research publications, CVE submissions, and industry knowledge sharing.
• Continuously evolve internal testing capabilities using modern tooling and AI-assisted approaches.

Skills

Penetration testing

Offensive security

Coding skills

AI/LLM testing

Cloud-native

Kubernetes

Lead security engagements

Tools

Burp Suite

Metasploit

Custom Security Tools

Job description

We are looking for Application Security Research Engineer in Barcelona. In this role, you will work with a team of researchers and ethical hackers focused on offensive security testing, automated exploit discovery, and advanced application security research. Your work will directly influence the security posture of company products and help scale secure-by-design principles. This is a hands-on technical role with a strong emphasis on offensive security, code exploitation, automation, and innovation.

Responsibilities

• Help to reshape company Product Security


• Plan and execute advanced penetration testing campaigns.


• Develop tools and frameworks for scalable security testing and fuzzing.


• Lead Security innovation by building and managing penetration testing tools \\ AI Agents


• Analyze vulnerabilities, perform root cause analysis, and develop proofs of concept.


• Identify systemic product weaknesses and help define long-term mitigations.


• Collaborate with engineering teams to reproduce, triage, and fix vulnerabilities.


• Contribute to security research publications, CVE submissions, and industry knowledge sharing.


• Continuously evolve internal testing capabilities using modern tooling and AI-assisted approaches.

Requirements

• 5+ year experience in Research and penetration testing.


• Strong coding skills and deep technical understanding of web, API, cloud-native, and backend technologies.


• AI and LLM Penetration testing knowldge and Experience


• Experience with penetration testing tools (Burp Suite, Metasploit, etc.) and Custom Security Tools development.


• Familiarity with modern architectures (e.g., Cloud, microservices, containers, Kubernetes).


• Familiarity with secure software architecture and typical attack vectors.


• Demonstrated ability to lead security testing engagements and report technical findings effectively.


• Experience building or integrating automated PT or fuzzing pipelines is a strong advantage.


• Knowledge and hands-on experience with SSDLC tools and CI/CD pipelines,


• Publications or open-source contributions in the security domain are a plus.