(Senior) Linux System Administrator (w/m/d)

As a Senior Linux System Administrator, you will become part of our infrastructure team and work closely with developers in the areas of backend, frontend, and microservices. You will be responsible for the stable, performant, and scalable operation of our platform and continuously develop our hybrid infrastructure.

• You will operate and develop our Linux-based infrastructure (Debian/Ubuntu) in a hybrid environment (On-Premise and AWS).
• You will automate our infrastructure and deployments using Infrastructure-as-Code and continuously develop existing processes.
• You will develop and operate our CI/CD pipelines and ensure automated, seamless build, test, and deployment processes.
• Together with the team, you will participate in the further development of our platform towards a service-oriented architecture.
• You will operate and optimize our web server and proxy server infrastructure (Nginx, HAProxy) as well as our high-performance, predominantly PHP applications (7.4 and 8.x).
• You will monitor and optimize our systems in terms of performance, availability, and security.
• You will work with both bare-metal systems and containers, and operate services based on the HashiCorp stack (Consul, Nomad, Vault, Terraform/Terragrunt).
• You will actively participate in architectural decisions and technical development, and collaborate closely with the team through Git-oriented workflows (IaC, Code Reviews, Standards).

Infrastructure and Orchestration: Docker, HashiCorp Consul, Nomad, Vault CI/CD and Automation: Git, GitHub Actions, Automated Deployments, Composer, Infrastructure as Code (Terraform/Terragrunt) Monitoring and Logging: Prometheus, Grafana, Loki-Stack Communication and Messaging: AMQP, REST-API Databases and Caching: MySQL 8, Redis, Memcache Approach to Work: "Four-eyes principle" Code Reviews, Git-oriented collaboration, daily stand-ups, agile work in 2-week sprints, decentralized remote collaboration via Workadventure and MS Teams.

• You have many years of experience operating productive Linux environments (ideally Debian/Ubuntu).
• You have experience operating on-premise and cloud infrastructures (preferably AWS).
• You have in-depth knowledge in the areas of automation, CI/CD, and Infrastructure-as-Code (e.g., Terraform, Ansible).
• You are confident working with Git as a central tool for collaboration, versioning, and quality assurance.
• You have experience with container technologies (Docker) and ideally with operating distributed systems.
• You have a good understanding of performance, scalability, and security – ideally in the context of highly available web platforms.
• You have experience with monitoring and logging tools, and you can use this data to purposefully identify areas for optimization.
• You enjoy working in a team, actively participate in technical discussions, and take responsibility for your tasks.
• Very good German language skills are required (minimum C1).

Live Football: Our international team shares a passionate love for football. You will have the opportunity to experience it live at the stadium with VIP season tickets and tickets. Room for Your Ideas: Whether it's "brown bags," code reviews, or technical discussions – we live development. You can try new things, contribute, and shape tomorrow's transfer market. Flexibility That Suits You: Work where you want – in the office, remotely, or on a "workation." Plus: flexible working hours for a real work-life balance. Relaxation That Delights: Whether it's yoga, fitness, swimming, or bouldering – with our Urban Sports Club membership, you can exercise throughout Germany and clear your head. Team Spirit: Regular team events, football quizzes, foosball games, or Christmas parties – togetherness is important to us. Development Opportunities: We support your further training through workshops, advanced training courses, and conference participation for networking. Our weekly in-house English courses not only improve your language skills but also strengthen bonds within Transfermarkt. Mobility: With our Deutschlandticket subsidy, you can travel flexibly and affordably – whether to the stadium or the office. Caring for the Future: We help you take care of the future – with pension supplements and contributions to property acquisition. Comfortable Office Atmosphere: Snacks, fruit, drinks, and a game of FIFA or foosball to unwind.

Then we look forward to your application via the application form! Then please contact us by email (recruiter contact) with Lea Seidel-Weiß.