Home › Companies › Zellerfeld › System Administrator - SiteOps

System Administrator - SiteOps

Zellerfeld · Hamburg · Active · Personio

Job facts

Field	Value
Company	Zellerfeld
Title	System Administrator - SiteOps
Normalized title	-
Department / team	Software / Permanent Employee
Location	Hamburg
Work model	-
Employment type	Full Time
Salary	-
Status	active
ATS provider	Personio
Posted / first seen	2026-06-02 / 2026-06-03
Changed / last seen	2026-06-03 / 2026-06-06

Related slices

Page	What it contains	Open
Company jobs	Active postings from Zellerfeld.	Open
Company breakdowns	Role, location, ATS, and work model facets for this company.	Open
ATS provider jobs	Active postings observed through Personio.	Open
Provider filtered search	The same provider as a filtered job collection.	Open
Department jobs	Active postings in Software.	Open
Lifecycle events	Open, update, close, and reopen events for this posting.	Open
Original posting	Canonical source or apply URL captured from the ATS.	Open

Linked records

Company	Zellerfeld
Source	b1cbec90-c3ad-42de-b72c-a7521edd7996
ATS provider	Personio

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, security-minded, and calm when production hardware is involved Nice to have: NAS administration, particularly TrueNAS Experience supporting production or manufacturing environments Background bridging IT and OT (operational technology) in a hardware-adjacent setting Why us? At Zellerfeld, you will find a multidisciplinary team of engineers, SW and HW specialists, entrepreneurs, designers, and students with a common passion. We embrace contrarian thinking, humility, pushing limits, and improving ourselves. We utilize a flat hierarchy, and we want your voice to be heard. We also care about bonding because we want to be a tight-knit community, so be prepared to spend quality time with everyone, including the CEO! As a company specializing in both hardware and software, we value close collaboration within our team. Therefore, we are seeking candidates who can join us at our office in Hamburg.

Full job record

Job ID	d32992e77cd042e1130722c6895559b5e1f13f3b
Org ID	8ae2b7f6-dc93-460c-90c9-49a8dc134fec
Source ID	b1cbec90-c3ad-42de-b72c-a7521edd7996
Board ID	b1cbec90-c3ad-42de-b72c-a7521edd7996
Provider	personio
Provider Job Key	2655035
Title	System Administrator - SiteOps
Normalized Title	—
Status	active
Active	yes
Location Text	Hamburg
Department	Software
Team	Permanent Employee
Employment Type	full_time
Workplace Type	—
Remote Policy	—
Country	Hamburg
Region	—
City	—
Salary Raw	—
Salary Min	—
Salary Max	—
Salary Currency	—
Salary Period	—
Source URL	https://zellerfeld.jobs.personio.com/job/2655035?language=en
Apply URL	https://zellerfeld.jobs.personio.com/job/2655035?language=en
First Seen At	2026-06-03 12:36:26Z
Last Seen At	2026-06-06 07:51:55Z
Last Checked At	2026-06-06 07:51:55Z
Last Changed At	2026-06-03 12:36:26Z
Inactive At	—
Source Posted At	2026-06-02 16:08:08Z
Source Updated At	—
Raw Payload Uri	s3://job-postings-prod-raw-590183727216/raw/provider=personio/board=zellerfeld.com/date=2026-06-06/2026-06-06T07-51-54-958Z-928bb7128ac81473053ef4f0ed8a6308ea487f6745e0c405fa0225a176efc8b3.json

Event Fields

{
  "content_hash": "6e51c60e4559e6d99f15dae42b4db1b3b89967d9678baa358110e190b212aba8",
  "source_hash": "bed461a0f3b9bef740fb93f12a4ee1796e85b94ace007d36a3d69ef974062ed8",
  "last_changed_at": "2026-06-03T12:36:26.079Z",
  "active_status": "active"
}

Parsed Structured

{
  "language": "en",
  "location": {
    "raw": "Hamburg",
    "city": null,
    "region": null,
    "country": "Hamburg",
    "is_remote": false,
    "confidence": 0.8
  },
  "salary_max": null,
  "salary_min": null,
  "inferred_at": "2026-06-06T07:51:55.850Z",
  "launch_scope": {
    "reason": "personio_production_catalog",
    "included": true,
    "location": {
      "raw": "Hamburg",
      "city": null,
      "region": null,
      "country": "Hamburg",
      "is_remote": false,
      "confidence": 0.8
    },
    "countries": [
      "Hamburg"
    ]
  },
  "remote_policy": null,
  "salary_period": null,
  "workplace_type": null,
  "salary_currency": null
}

Extensions

{}

Native Structured

{
  "id": "2655035",
  "name": "System Administrator - SiteOps",
  "office": "Hamburg",
  "keywords": [],
  "schedule": "full-time",
  "createdAt": "2026-06-02T16:08:08+00:00",
  "seniority": "experienced",
  "department": "Software",
  "occupation": "software_and_system_architecture",
  "subcompany": null,
  "employmentType": "permanent",
  "jobDescriptions": [
    {
      "name": "Your mission",
      "value": "<span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">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.</span>"
    },
    {
      "name": "What you'll do",
      "value": "<ul style=\"margin-top:0;margin-bottom:0;\"><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Design, implement, and maintain our network infrastructure, including firewall configuration and segmentation</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Run and evolve our virtualization and containerization platforms (Proxmox, Docker, Docker Swarm)</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Build and maintain CI/CD pipelines that deliver software reliably to production</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Apply Infrastructure as Code practices so our environment is reproducible, auditable, and recoverable</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Administer Linux servers — security, performance, availability, and the unglamorous work that keeps them healthy</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Configure reverse proxies, manage NAS systems, and own the storage and traffic layers</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Implement logging, monitoring, and alerting so we know about problems before our colleagues do</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Provide infrastructure support across all tiers — you're the person teams come to when something breaks</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Collaborate with developers to make systems more reliable, observable, and easier to operate</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Document the stack so it's not all in one person's head</span></p></li></ul>"
    },
    {
      "name": "Your profile",
      "value": "<ul style=\"margin-top:0;margin-bottom:0;\"><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Strong Linux server administration (Ubuntu in our case), including security hardening</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Real network experience: Fortinet firewalls, TCP/IP, VLANs, switching (we use AOS-CX)</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Virtualization and containers: Proxmox, Docker, Docker Swarm</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Infrastructure as Code with Ansible and/or Terraform</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">CI/CD pipeline experience, especially GitLab CI/CD and Github Actions</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Comfortable with reverse proxy configuration (Nginx, Traefik)</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Monitoring and observability across the stack (Zabbix, Grafana, Prometheus, Elastic Stack)</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">The temperament for on-prem work — methodical, security-minded, and calm when production hardware is involved</span></p></li></ul><p style=\"line-height:1.38;text-align:justify;margin-top:12pt;margin-bottom:12pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:700;font-style:normal;text-decoration:none;\">Nice to have:</span></p><ul style=\"margin-top:0;margin-bottom:0;\"><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;margin-top:12pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">NAS administration, particularly TrueNAS</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;margin-top:0pt;margin-bottom:12pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Experience supporting production or manufacturing environments</span></p></li><li style=\"list-style-type:disc;font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\"><p style=\"line-height:1.38;margin-top:12pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">Background bridging IT and OT (operational technology) in a hardware-adjacent setting</span></p></li></ul>"
    },
    {
      "name": "Why us?",
      "value": "<p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">At Zellerfeld, you will find a multidisciplinary team of engineers, SW and HW specialists, entrepreneurs, designers, and students with a common passion. We embrace contrarian thinking, humility, pushing limits, and improving ourselves. We utilize a flat hierarchy, and we want your voice to be heard. We also care about bonding because we want to be a tight-knit community, so be prepared to spend quality time with everyone, including the CEO!</span></p><br><p style=\"line-height:1.38;text-align:justify;margin-top:0pt;margin-bottom:0pt;\"><span style=\"font-size:11pt;font-family:Arial, sans-serif;color:#000000;background-color:transparent;font-weight:400;font-style:normal;text-decoration:none;\">As a company specializing in both hardware and software, we value close collaboration within our team. Therefore, we are seeking candidates who can join us at our office in Hamburg.</span></p>"
    }
  ],
  "occupationCategory": "it_software",
  "recruitingCategory": "Permanent Employee"
}

Get this page with API

Rendered from the bluedoor Job Postings API. Reproduce it:

GET https://api.bluedoor.sh/job-postings/v1/jobs/d32992e77cd042e1130722c6895559b5e1f13f3b?include=descriptionJSON

GET https://api.bluedoor.sh/job-postings/v1/orgs/8ae2b7f6-dc93-460c-90c9-49a8dc134fecJSON

GET https://api.bluedoor.sh/job-postings/v1/sources/b1cbec90-c3ad-42de-b72c-a7521edd7996JSON

GET https://api.bluedoor.sh/job-postings/v1/jobs/d32992e77cd042e1130722c6895559b5e1f13f3b/eventsJSON

Docs · Get an API key