Senior Site Reliability Engineer – Quantum Computing (f/m/d)

eleQtron develops and operates full-stack quantum computers based on trapped-ion technology. Quantum computing is a new computing paradigm rapidly approaching commercial viability. Our unique approach combines laser-cooled trapped ions with microwave control and tailored magnetic fields. Our next-generation computing machines under development will be able to find solutions to problems that are out of reach today, thus enabling new innovative products and services for a brighter future. We are looking for a Senior Site Reliability Engineer to drive the reliability, scalability, and operability of the software systems powering our trapped-ion quantum computers. Responsibilities: As a Senior Site Reliability Engineer – Quantum Computing (f/m/d), you will take end-to-end responsibility for the reliability, stability, and operability of our software that operates our quantum computers. You will act as a technical authority for system reliability, shaping how our quantum computers are operated, monitored, and evolved in production-like lab environments. This is an on-site position in Siegen or Hamburg, working closely with software engineers, firmware developers, physicists, and hardware engineers in an interdisciplinary environment. Own the reliability strategy for the quantum control and quantum program execution stack Define and continuously refine SLIs, SLOs, error budgets, and operational guardrails Design and evolve the observability architecture across software, infrastructure, and hardware-adjacent layers Lead incident response, post-mortems, and root cause analyses for critical system failures Proactively identify systemic risks and drive mitigation strategies Drive automation initiatives to reduce operational toil and improve system stability Establish and maintain operational standards, runbooks, and documentation Shape CI/CD and release processes with a strong focus on reliability and safe deployments Act as a trusted partner for development teams when designing production-ready systems Mentor engineers and raise reliability awareness across the organization Required Skills: Bachelor's or master's degree in Computer Science, Engineering, or a related field, or equivalent experience 5+ years of professional experience in SRE, DevOps, Platform Engineering, or Systems Engineering Proven track record of operating and stabilizing complex, mission-critical systems Strong experience with containerized and orchestrated environments Hands-on experience with monitoring, alerting, and observability systems Experience leading incident response and driving post-mortem Strong technical documentation and architectural reasoning skills Creative mindset and enjoyment working in a multicultural and interdisciplinary team Ability to make sound engineering trade-offs under uncertainty Fluent in written and spoken English We value: Experience in hardware-adjacent, lab, or cyber-physical systems Background in scientific, research, or experimental environments Strong Python skills for automation and tooling Experience with long-running, stateful workloads Familiarity with firmware, control systems, or real-time constraints Experience with programmatic device