Freelance NixOS Engineer (m/f/x)

• Location: Bonn, North Rhine-Westphalia, Germany
• Start: Jan 2026
• Duration: 12 months (with possible extensions)
• Workload: Full-time
• Remote: 95% remote within Germany, 5% on‑site in Bonn
• Language: German

Responsibilities

• System configuration: creation, maintenance, and expansion of NixOS configurations for servers, containers, and desktops.
• Infrastructure as Code: use of tools such as Terranix to manage NixOS with Terraform.
• Cluster management: orchestrate multi‑node deployments and configuration distribution.
• DevOps & CI/CD: build and maintain pipelines.
• Cloud & virtualization: provision and manage infrastructure in cloud environments.
• Monitoring & security: integrate DevSecOps aspects.
• Support and training: help development teams with NixOS‑based processes.

Must‑Haves

• Deep understanding of NixOS and Nix package manager.
• Experience with declarative systems such as Colmena, NixOps, Terranix.
• Knowledge of Terraform, cloud platforms (OpenStack, AWS), container technologies (Docker, Kubernetes).
• Strong programming and scripting in Nix, Bash, Python.
• Experience with CI/CD tools, monitoring systems.
• Fluent German (written and spoken).

Desired Skills and Experience

• NixOs Engineer
• NixOs
• Operating System
• DevOps
• Infrastructure as Code (IaC)
• CI/CD
• Terranix
• Cloud
• Containers
• Docker
• Kubernetes
• AWS
• OpenStack
• Python
• Bash
• Nix
• Pipeline
• DevSecOps

Contact

To apply, send an email with your hourly rate and updated CV including a detailed list of freelance projects. Ensure the mentioned technology stack is clearly visible in your CV.

Email: j.mampaso(at)computerfutures.at

Additional Information

SThree_Germany is acting as an Employment Business in relation to this vacancy.

• Seniority level: Mid‑Senior level
• Employment type: Contract
• Job function: Information Technology
• Industries: Technology, Information and Internet