System Engineer – Infrastructure (f/m/d)

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 Git Ops-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.

Responsibilities

• 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 Git Ops 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: Qualifications

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?

• 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 Git Ops tools (e. g., Argo CD, Git Lab 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.

Benefits and 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, Linked In Learning, language courses, talent development programmes, 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 centres, 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.
• Job Details
• Seniority level: Associate
• Employment type: Full‑time
• Job function: Information Technology
• Industries: Technology, Information and Internet
• Reference ID: 310
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