System Engineer – Infrastructure (f/m/d)

Allgemeine Qualifikationen und Stellenbeschreibung

# Your Tasks Are you ready to take ownership of a global Loadbalancer platform serving millions of users? As a System Engineer, you’ll architect, secure, and operate high-throughput infrastructure based on HAProxy and Envoy, all within a GitOps-driven environment. You’ll collaborate across teams and act as a technical advisor—your work will directly influence the reliability and efficiency of our production systems. We operate at serious scale: 3.5 billion logins per day, hundreds of petabytes of storage, and nearly half an exabyte of internet traffic annually. Join a team that’s building a European alternative to email and cloud services, committed to privacy, digital sovereignty, and operating under European law. - You own the design, operation, and continuous evolution of our Loadbalancer platform. - You define rollout strategies such as Canary Routing and Blue/Green deployments, and implement them via GitOps pipelines. - You monitor and optimize key metrics like request rates, response times, and error rates. - You establish and enforce security policies for TLS, SNI, header handling, rate limiting, and circuit breakers. - You present architectural concepts and platform strategies to internal and external stakeholders. # Your Profile Do you have a degree in Computer Science or equivalent experience? Are you confident in designing and operating platforms in large-scale environments? Do you thrive in cross-functional collaboration and technical leadership? We believe the following skills and experiences will help you to be successful in this role: - 5+ years of experience in designing and operating infrastructure at scale. - Expertise in HAProxy and/or Envoy, including advanced configuration (ACLs, TLS termination, routing strategies). - Strong proficiency in GitOps tools (e.g., ArgoCD, GitLab Runners), CI/CD pipelines, and secret management (e.g., Vault), as well as Debian packaging. - Programming experience in Lua, WASM, Python, or Bash, along with strong debugging skills using logs, Prometheus metrics, and tracing tools. - Excellent communication skills in English, with the ability to advise stakeholders and lead cross-functional initiatives. # Our Benefits 🏢** 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