Senior Cloud Developer (m/f/d)

At virtual7, we combine our technological expertise with a deep understanding of our customers' needs. Through tailor-made solutions, we create real added value for our framework contract partners in public administration. We are currently looking for a Senior Cloud Developer (m/f/d) for one of our clients.

• Project location: Bonn

• Period: October 12, 2026 to December 31, 2026

• Work mix: 45 days remote / 5 days on-site

• Important: Remote work only possible within Germany

• Willingness for SÜ2 according to § 9 SÜG for classified/sabotage protection

YOUR MISSION

Our client is focusing on the further development of a secure software supply chain.

To further expand the highly secure, physically isolated multi-cloud platform, software artifacts must be transferred from the internet into the isolated environments automatically, securely, and verifiably. The task is to rethink the existing concept of the artifact pipeline and develop it further into a flexible secure supply chain for various technology stacks.

The tasks in detail:

• Automated retrieval of artifacts from predefined, external sources using tools like ARC

• Development and operation of Kubernetes Operators in Golang and API Extensions in the area of Software Supply Chain Security

• Scalable integration of antivirus scanners running on Kubernetes into the artifact import pipeline

• Support for different formats: OCI container images (Docker), Helm Charts, and generic large files

• Verification of artifact integrity

• Bundling and compression of artifacts into transportable containers/formats

• Preparation of data for physical or logical media break

• Operation of a scalable, multi-tenant artifact registry infrastructure on Kubernetes for providing artifacts to internal users

• Further development of Kubernetes Operators for automated management of an artifact management, retrieval, and verification system

• Development and operation of Kubernetes Operators in Golang and API Extensions in the area of Software Supply Chain Security

MUST-HAVES FOR THIS POSITION

• Good knowledge of SDLC principles, Code Version Control, Git

• Proven DevOps or DevSecOps experience, especially in building and using CI/CD pipelines

• Expert knowledge in Linux, automation, and scripting

• Experience setting up and operating Kubernetes

• Experience in operating and using CEPH (and rook) and especially object storage

• Infrastructure as Code (IaC), GitOps

• Practical operational experience with OCI Registries on Kubernetes, e.g., Harbor, Nexus Repo, Artifactory, Zot

• In-depth knowledge of Go (Golang) and Python and building Kubernetes Operators

• Practical experience with artifact signing tools, experience with cryptographic hashes (SHA-256/512) and the concept of provenance

• Knowledge of SBOMs (Software Bill of Materials) and automated security scanners, e.g., based on CNCF Falco

• Proficient in documentation using User Stories and Features in Jira

NICE-TO-HAVES FOR THIS POSITION

• Experience with physically/logically isolated environments and the associated challenges

• Know-how in resilient processing of large files

#LI-DNI

If you are interested and currently have available capacity, we look forward to your application. Our recruiting team – including Alicja Okuniewicz, Anna-Lena Röcker, Jörg Becker – is looking forward to talking with you.

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