Job
- Level
- Senior
- Job Field
- IT, Network, System
- Employment Type
- Full Time
- Contract Type
- Permanent employment
- Location
- Cologne
- Working Model
- Hybrid, Onsite
Job Summary
In this role, you will maintain and optimize the Linux infrastructure, drive development projects and automation, and plan hybrid infrastructures using the latest technologies.
Job Technologies
Your role in the team
- As part of our IT team, you will play a central role in the operation and further development of our infrastructure.
- You don't think in tickets, but in solutions, take responsibility, and drive topics forward independently.
- About 60% of your time is spent working on projects and modernization, while 40% is dedicated to operation and optimization of our existing systems.
- Your responsibilities include, in particular:
- Technical responsibility for our IT administration
- Support, optimization, and further development of our Linux infrastructure
- Operation and expansion of our virtualization platform based on Proxmox
- Administration of our network and firewall infrastructure (pfSense)
- Planning and further development of hybrid infrastructures (On-Premise & Cloud)
- Setup and maintenance of secure site-to-site and cloud VPNs
- Monitoring of our infrastructure as well as proactive error analysis
- Analysis and resolution of technical issues
- Further development of automation and standardization processes
- Technical assessment of new requirements and derivation of sustainable infrastructure decisions
- Documentation and continuous improvement of our system landscape
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Our expectations of you
Qualifications
- Solid understanding of networks (Routing, VLANs, DNS, DHCP, VPN, Firewalling)
- Basic knowledge of Bash, Python, or Ansible
- Very good German and English skills, at least at C1 level
- Confident demeanor and the ability to communicate technical decisions clearly
- Docker or LXC
- Backup, storage, or high-availability solutions
- Knowledge in IT security and hardening
Experience
- Several years of professional experience as an IT Administrator, System Engineer, or in a comparable role
- Several years of professional experience in Linux administration
- Experience with virtualization, ideally Proxmox
- Experience with monitoring solutions (e.g., Prometheus, Grafana, Checkmk, or Zabbix)
- Experience with pfSense or comparable firewall solutions
- Experience with hybrid infrastructures
- Experience with cloud platforms (e.g., AWS, Azure, Hetzner)
- Experience with documentation and structured change management
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What we offer
- High degree of autonomy in technical decision-making
- Direct influence on our infrastructure strategy
- Approximately 60% project work instead of solely operations
- Short decision-making paths without corporate structures
- Flexible working hours
- Hybrid working (approximately 2 days on-site per week, rest home office / mobile)
- Modern Linux-based infrastructure
- Individual training and development opportunities
- Flat hierarchies and a collegial team
- Permanent employment
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Benefits
Work-Life-Integration
Health, Fitness & Fun
Topics You Will Work On
Job Locations
About Your Employer
Intelligent Research in Sponsoring GmbH
Intelligent Research in Sponsoring GmbH (IRIS) is an established company based in Karlsruhe and Cologne, specializing in market research and sponsorship analysis in the sports sector. It supports sports organizations and sponsors through data-driven analyses for evaluating sponsorship investments and media presence.
Description
- Company Type
- Established Company
- Working Model
- Hybrid, Onsite
- Industry
- Sports, Leisure
Senior Linux System Administrator / Senior Linux System Engineer
- Location
- Cologne
- Working Model
- Hybrid, Onsite
- Diversity
- Open for all genders
