Security Engineer

Proxima Fusion is Europe’s fastest-growing fusion company and the continent’s best-funded fusion player, as well as the first spin-out from the Max Planck Institute for Plasma Physics (IPP). Backed by over €650M and powered by a growing team across Munich, Zurich, and Oxford, we are developing the hardware and infrastructure needed to deliver the world’s first commercial stellarator fusion power plant.

Our concept advances the most mature fusion technology out there, the Wendelstein 7-X stellarator, through two next-generation machines: Alpha and Stellaris. Our work combines stellarator optimization, advanced computation, machine learning, and high-temperature superconducting magnets to unlock higher-performance designs that were previously out of reach.

Turning these designs into a functioning fusion power plant requires excellence and ownership across every discipline, from physics and engineering to software, manufacturing, law, and business functions.

• You have 5+ years hands-on in security engineering, with real depth in identity, endpoint, and infrastructure.

• You have built or substantially operated a SIEM, and run real incidents end-to-end.

• You have implemented Zero Trust in production - unified IdP and MDM, conditional access, device posture.

• You know Google Workspace Enterprise security well, or can get there fast from an equivalent platform.

• You are automation-first: Terraform, and scripting in Python, Bash, or PowerShell are no strangers to you.

• You are fluent in CIS Benchmarks, NIST, ISO 27001, and NIS2 without being ruled by them.

• You can turn a technical finding into a business impact and actionable solutions

• Interest or a track record in AI security.

• Hands-on cloud and container security: GCP, containers, Kubernetes.

• Certifications such as CISSP, GCIA, GCIH, CCSP, or Google Cloud Professional Cloud Security Engineer.

• Experience in a regulated, export-controlled, or high-security environment, where physical and digital security meet.

• Recruiter Interview (30-60 min)

• Technical Screening (30 min)

• Technical Panel (3x60 min)

• CEO call (30 min)

This role sits at L2/L3 of our framework, please inquire during the recruitment process for further information

At Proxima Fusion, our mission is bold: making limitless clean energy a reality. To get there, we need a high-performing, diverse team that brings different perspectives, challenges assumptions, and builds together with purpose. We know that diversity of thought and experience leads to better ideas, stronger execution, and a more resilient team. We don’t look at how you identify, what you look like, who you choose to worship or what ethnicity you are. We care about what you can bring to the table.