Computer Security Architect

Strengthens CERN’s Security Operations Centre and external-cloud controls by maintaining incident-detection infrastructure, hardening AWS, Google, Microsoft and Oracle environments, reviewing SaaS security posture and supporting penetration testing.

Department: IT Department, Computer Security Office

• Maintain and support the Security Operations Centre incident-detection infrastructure
• Extend open-source security monitoring and response capabilities
• Configure AWS, Google Cloud, Microsoft Azure and Oracle Cloud security controls
• Review the security posture of Microsoft and Google SaaS environments
• Contribute technical expertise to Computer Security Office projects
• Advise CERN teams on security matters and perform penetration testing

• Bachelor’s or master’s degree in Computer Science; applicants may not hold a PhD
• No more than two years of professional experience since graduation by the application deadline
• No previous CERN fellow or graduate contract
• Experience designing networks and applying communication technologies and protocols
• Experience installing, operating and maintaining computing systems
• Experience with secure configurations, security analysis, penetration testing and cloud security
• Excellent Linux or UNIX administration, virtualisation, database and shell-scripting knowledge
• Programming experience in Python or C
• Spoken and written English

• Hybrid role starting ideally on 1 October 2026. Stand-by, night, Sunday and official-holiday work may be required. Eligibility is limited to CERN Member or Associate Member State nationals, subject to the stated 2026 ceilings.