Senior Agent Platform Engineer
Primary stack
Job description
About the Position
Senior Agent Platform Engineer
Location: Munich, Germany
Department: Business Operations
Employment Type: Full time
Workplace Type: On-site
About the Company
Proxima Fusion is Europe’s fastest-growing fusion company and the continent’s best-funded fusion player. Backed by over €650M, we are developing the hardware and infrastructure needed to deliver the world’s first commercial stellarator fusion power plant. Our work combines stellarator optimization, advanced computation, machine learning, and high-temperature superconducting magnets to unlock higher-performance designs.
Responsibilities
- Technical Owner: Own the design, delivery, and operation of our agent platform.
- Platform Architecture: Own the platform architecture, technical delivery, and day-to-day operation.
- Scalability: Scale the platform from an early product into reliable, governed infrastructure used across the company.
- Integration: Co-Design the integration layer that connects agents to internal and external systems.
- Security: Make autonomy safe and governable with permission and approval flows, capability boundaries, audit logging, cost and token controls, and hardening against prompt injection and tool abuse.
- Observability: Build the evaluation and observability layer for non-deterministic systems.
- Operation: Operate what you build on Google Cloud with production discipline.
Requirements
Must have
- 5+ years of software engineering experience, with real depth in Python and distributed backend systems.
- Experience in architecting, building, and operating production-grade agentic or LLM systems.
- Hands-on knowledge of the current agent ecosystem: MCP, agent SDKs and CLIs, multi-agent orchestration patterns, sandboxed code execution.
- Experience running production workloads on Kubernetes and a major cloud (ideally GCP).
- Strong focus on evaluation and observability as platform features.
- Serious approach to security as a design constraint.
- Experience with infrastructure as code (Terraform) and CI/CD.
- Low-ego, high-clarity communicator who can work directly with expert users and build consensus across teams.
Nice to Have
- Experience with model gateways and routing.
- Exposure to scientific or high-performance computing: batch schedulers, HPC clusters, or simulation-heavy environments.
- Open-source contributions to AI/agent tooling.
- A track record of technical mentorship.
We Offer
- Opportunity to work on some of the most complex tech challenges to bring abundant, safe, clean energy to the world.
- Join and learn from an exceptional selection of accomplished and driven individuals.
- Do your life’s best work and enjoy the journey.
- Be part of a mission to make limitless clean energy a reality.
Interview Process
- Recruiter Interview: 30-60 min
- Technical Screening: 30 min
- Technical Panel: 3x60 min
- CEO Call: 30 min
This role sits at "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 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.
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