Zellerfeld
Manufacturing
SystemAdministrator-SiteOps
Neural analysis suggests this role is
optimal for Mid+ candidates.
“System Administrator - SiteOps at Zellerfeld. Skills: On-Premises DevOps, Infrastructure automation, System reliability, Network security. Design network infrastructure. Implement network infrastructure”
Industry & Context.
Troubleshooting; Root cause analysis
On-prem work temperament
What They're Looking For.
Must Have
Linux server administration, Network experience, Virtualization and containers, Infrastructure as Code, CI/CD pipeline experience, Reverse proxy configuration, Monitoring and observability
Nice to Have
NAS administration, TrueNAS experience, Supporting production environments, Supporting manufacturing environments, Bridging IT and OT
What You'll Do.
Design network infrastructure
Implement network infrastructure
Maintain network infrastructure
Configure segmentation
Run virtualization platforms
Evolve virtualization platforms
Run containerization platforms
Evolve containerization platforms
Build CI/CD pipelines
Maintain CI/CD pipelines
Apply Infrastructure as Code
Administer Linux servers
Tune Linux server performance
Ensure Linux server availability
Configure reverse proxies
Provide infrastructure support
Collaborate with developers
Make systems reliable
Make systems observable
Make systems easier to operate
How You'll Work.
Team & Collaboration
Cross-functional teams; Developer collaboration
Full Job Description
Your mission You'll be the cornerstone of our technical infrastructure — the person who keeps everything running, secure, and ready to scale. As our On-Premises DevOps Engineer, you'll bridge development and operations, automating workflows, hardening our systems, and ensuring the reliability our production environment depends on. From network security to CI/CD pipelines, you'll own the full infrastructure stack and play a critical role in building the factory of tomorrow. What you'll do Design, implement, and maintain our network infrastructure, including firewall configuration and segmentation Run and evolve our virtualization and containerization platforms (Proxmox, Docker, Docker Swarm) Build and maintain CI/CD pipelines that deliver software reliably to production Apply Infrastructure as Code practices so our environment is reproducible, auditable, and recoverable Administer Linux servers — security, performance, availability, and the unglamorous work that keeps them healthy Configure reverse proxies, manage NAS systems, and own the storage and traffic layers Implement logging, monitoring, and alerting so we know about problems before our colleagues do Provide infrastructure support across all tiers — you're the person teams come to when something breaks Collaborate with developers to make systems more reliable, observable, and easier to operate Document the stack so it's not all in one person's head Your profile Strong Linux server administration (Ubuntu in our case), including security hardening Real network experience: Fortinet firewalls, TCP/IP, VLANs, switching (we use AOS-CX) Virtualization and containers: Proxmox, Docker, Docker Swarm Infrastructure as Code with Ansible and/or Terraform CI/CD pipeline experience, especially GitLab CI/CD and Github Actions Comfortable with reverse proxy configuration (Nginx, Traefik) Monitoring and observability across the stack (Zabbix, Grafana, Prometheus, Elastic Stack) The temperament for on-prem work — methodical, se
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