We’re looking for a Go Backend Software Engineer to help design, build, and operate backend services and infrastructure APIs for a large‑scale, sovereign cloud platform. You’ll work across cloud‑native distributed systems, Kubernetes, databases, and CI/CD tooling to ensure a secure, scalable, and highly available environment.

• Freelance cooperation

• Start date: ASAP/01.07.2026

• Duration: until 31.10.2026, with the possibility of extension for an additional 6-12 months

Requirements:

• Production experience developing backend services and infrastructure APIs in Go

• Experience designing and operating REST and gRPC APIs in distributed systems

• Solid Kubernetes experience, including workload deployment with Docker and Helm

• Working knowledge of PostgreSQL and/or MariaDB (schema design, query optimisation)

• OpenStack experience

• Understanding of cloud infrastructure and IaaS concepts

• Hands‑on experience with CI/CD pipelines in a DevOps environment

• Strong troubleshooting and problem‑solving skills

• Good command of English (German is a plus)

Nice to have:

• Experienced in using AI tools in day-to-day workflow

Main responsibilities:

• Design and develop infrastructure APIs in Go for cloud resource management.

• Implement REST and gRPC endpoints across the cloud platform API surface.

• Contribute to backend service architecture: API design, data models, service communication.

• Integrate services with the platform ecosystem: IAM, Terraform provider, OpenStack, Kubernetes.

• Maintain and improve CI/CD pipelines and release automation.

• Own services end-to-end: from development through production monitoring and incident response.