Go Backend Software Engineer

Our client is a leading European technology organization focused on cloud computing, cybersecurity, and artificial intelligence. With a strong commitment to digital sovereignty and data protection, the company develops and operates a proprietary cloud platform that serves both internal business units and external customers. Its cloud ecosystem enables secure, scalable, and GDPR-compliant digital services for enterprises across Europe.

• 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 cloud-native distributed systems.

• Solid Kubernetes experience: workload deployment with Docker and Helm.

• Working knowledge of PostgreSQL and/or MariaDB, including schema design and query optimisation.

• Understanding of cloud infrastructure and IaaS concepts. OpenStack experience is a plus.

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

• 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.