System Engineer – Linux (f/m/d)
GMX, WEB.DE & mail.com | IT System Administration | Karlsruhe / Munich | Permanent | Full-time | Experienced professionals | Reference ID: 309
- Your tasks
Are you passionate about Linux systems, automation, and scalable infrastructure? As a System Engineer, you’ll help shape the backbone of one of Europe’s largest email platforms—serving over 42 million users across WEB.DE, GMX, and mail.com. Join a team that’s building a European alternative to email and cloud services, committed to privacy, digital sovereignty, and operating under European law.
Do you enjoy working with Linux and modern automation tools? Are you excited by the idea of building reliable infrastructure that powers millions of users? Want to contribute to a high-performance environment with a real impact?
- You build and manage Linux servers (primarily Debian) on bare-metal and virtualized platforms.
- You operate core infrastructure services such as DNS, DHCP, PXE boot, and proxy systems.
- You automate infrastructure tasks using tools like Ansible and Puppet.
- You develop and maintain scripts in Python, Bash, or similar languages.
- You enhance monitoring and logging systems using tools like Prometheus, Grafana, and ELK.
- Your profile
Do you have a degree in Computer Science, IT, or equivalent practical experience? Are you confident in Linux system administration and passionate about automation and clean infrastructure? Do you thrive in collaborative, agile environments? We believe the following skills and experiences will help you to be successful in this role:
- Solid experience in Linux system administration and infrastructure operations.
- Proficiency in automation and configuration management tools (Ansible and Puppet).
- Strong scripting skills in Python, Bash, or similar languages.
- Familiarity with core infrastructure services such as DNS, DHCP, PXE, and proxies.
- A proactive, team-oriented mindset and a passion for building reliable, scalable systems.
- Our benefits in detail
🏢 Lived corporate culture: Flat hierarchies, a culture of respect and appreciation, signatories of the Diversity Charter, open communication and no dress code
🎓 Wide range of further training: Internal and external training opportunities, LinkedIn Learning, language courses, talent development programs, conferences and mentoring
💡 TEC-Campus: Free choice between Linux, Mac, or Windows, slack days, conferences, lecture series, courses, open-source projects, community meetups and user groups
❤️ Active health care: Wellpass, free internal sports and fitness classes, health days, family & care support services, discounts at fitness centers, mental health first responder, fresh fruit and drinks for free
🚝 Mobility: Subsidy for job bike leasing, job ticket and relocation service if you live outside Germany
💻 Flexible working models: Home office options, flexible working hours and 30 days of vacation with the option for additional unpaid leave
💰 Financial benefits: Corporate benefits, company pension scheme, capital-forming benefits, occupational disability insurance and various partner discounts
🎉 Events: Summer and winter parties, sports tournaments and team events
We are brand. With GMX, WEB.DE and mail.com and over 42 million active users, we are the leading email and communication platform in Germany, Austria and Switzerland.
We are future. Our services and apps simplify digital life from cloud storage to news and ID management.
You are at home. Your digital passion finds a professional home with us. Your strength makes us stronger, your expertise complements our ideas, your success becomes visible. Together we shape the digital future.
Diversity enriches. Different cultures, nationalities, genders, age groups, sexual orientations and religions as well as people with disabilities - we desire diversity and encourage it. Because only teams that reflect all facets of society offer the best framework conditions for creativity and make a company productive and distinctive. We value diversity and welcome all applications.

Apply now
We look forward to receiving your application, including your salary expectations and the reference number given above. Please use our online application form. If you have any questions about the position or the application process, please send us an email.
1&1 Mail & Media Applications SE
Recruiting & Candidate Management
Brauerstraße 48
D-76135 Karlsruhe
We are awarded!



