Overview
In this role you will conduct penetration testing across IT and OT environments to strengthen security for mission-critical systems. You will influence secure design and risk mitigation from early project stages through delivery, across defence, aerospace, and digital security programmes. You’ll produce actionable findings and work with diverse stakeholders to improve controls and compliance. This position offers exposure to high-security projects and opportunities to advance within a global engineering organization.
Pay / Benefits
- Performance-related bonus
- Half day every Friday
- 28 days annual leave (plus bank holidays)
- Private healthcare
- Pension scheme
- Life cover
Responsibilities
- Perform penetration testing across Windows, Linux, mobile (iOS/Android), web, and cloud environments
- Identify and communicate vulnerabilities and risks clearly
- Support accreditation and assurance activities on complex high-security programmes
- Advise on security controls and mitigation strategies aligned to customer needs
- Contribute to governance frameworks, policies, and secure procedures
- Produce high-quality technical reports and security documentation
- Act as cybersecurity SME across projects and stay aligned with evolving regulations
- Collaborate with internal teams, customers, and external stakeholders; support bid activities and effort estimation
Key requirements
- Hands-on penetration testing across IT/OT environments
- Strong understanding of security testing methodologies and frameworks
- Experience producing clear, actionable technical reports
- Degree in Computer Science or Engineering
- Industry certifications such as CREST, OSCP, CEH, GPEN, GXPN (or similar)
- Collaborative mindset
- Clear written and verbal communication
- Stakeholder engagement across levels
- Penetration testing across Windows, Linux, mobile, web, and cloud
- Security testing methodologies and frameworks
- Technical reporting and documentation
Penetration Tester - Vulnerability Researcher in Cheadle employer: Thales Group
Thales is an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration in the heart of Crawley. With a strong commitment to employee growth, we provide extensive training opportunities, competitive benefits including private medical insurance and annual bonuses, and a supportive environment where your contributions directly impact the future of technology. Join us to be part of a team that values diversity, encourages creativity, and prioritises ethical AI solutions.
