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 Cloud Engineer (m/f/d) to join us in Hamburg or Siegen and build and operate the scalable, secure cloud platform that connects users with our trapped-ion quantum computers.
Responsibilities:
You will join our Quantum firmware Team as a Cloud Engineer. You will build the layer through which the world reaches our quantum computers. Users submit quantum programs; your services compile, schedule, and dispatch them to our machines and return the results:
- Build and operate the cloud services that let users submit quantum programs to our systems and retrieve their results.
- Develop and deploy our compilation pipeline as a scalable cloud service , from circuit input through transpilation down to hardware-level instructions
- Design and maintain the public API and SDK entry points to our platform
- Implement job queuing, scheduling, and dispatch towards the hardware backends, including quota, prioritisation, and result handling
- Own authentication and authorisation across the platform: user and tenant identity, API keys and tokens, and role-based access to machines, jobs, and results, built on an established identity provider rather than from scratch
- Guarantee tenant isolation, so that quantum programs and results are never visible across customer boundaries, and manage secrets and credentials across the stack
- Work with the quantum firmware and hardware teams on the interfaces between cloud services and the machine itself
- Instrument the platform for observability and keep an eye on latency, throughput, and cost
Required Skills:
- 3+ years of hands-on experience building and deploying backend or platform services in production
- Strong Python; additional systems-level language experience (Go, Rust, C++) is welcome
- Solid API design skills (REST and/or gRPC) for services other developers have to use
- Practical experience implementing authentication and authorisation in production systems: OAuth 2.0 / OpenID Connect, token handling, and role-based access control
- Secure engineering habits: least privilege by default, proper secrets management, and awareness of dependency and container supply-chain risks
- Infrastructure as code (Terraform, Pulumi, or similar) and CI/CD pipelines (GitLab CI, GitHub Actions, or similar)
- Working understanding of GDPR and data residency requirements, and a genuine interest in digital sovereignty
- Ability to collaborate effectively with experimental physicists and engineers
- Strong adaptability and a quick learning mindset
- Good proficiency in English (written and spoken); German is an advantage for working with public-sector partners
Nice to have (Bonus)
- Running an identity provider in production (Keycloak, Zitadel, Ory, Authentik, or a managed IAM service)
- Multi-tenant isolation patterns in SaaS platforms
- Contributing to security certification work (ISO 27001, BSI IT-Grundschutz, BSI C5) or acting on penetration test findings
- Familiarity with quantum SDKs and toolchains (Qiskit, Cirq, PennyLane, QIR) or hardware abstraction interfaces such as QDMI
- Batch scheduling or HPC environments (Slurm or similar)
- Observability stacks such as Prometheus, Grafana, or OpenTelemetry
- Prior exposure to quantum computing or other deep-tech domains
What you can expect from eleQtron:
- Competitive salary: We value our team members and therefore provide remunerations that reflect this, additionally rewarding achievements
- Flexible working hours : We offer personal freedom through a variety of flexible work schedules
- Team spirit: In our international and diverse team, and with our regular team events, having fun at work is simply part of the culture
- Further development: We want to grow together and so we offer our team members needs-based, individualized further training as well as plenty of room for personal development
- Wellness Package : We offer health-promoting benefits such as fitness programs like UrbanSportsClub to support your well-being
- Bike Leasing: Stay Mobile and Sustainable with Our Company Bike Leasing Program
- Moving Benefits: A warm welcome! We are happy to support employees who move for us with a bonus
- At the forefront : Work at the forefront of technology, where academic research meets commercial applications
- Modern workplace: We have a high-quality infrastructure with laboratory space, offices and meeting rooms
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