System Engineer – Infrastructure (f/m/d)

GMX, WEB.DE & mail.com; München; On-site; EUR 50,000 - 70,000; Full time

Benefits offered by this job

Flat hierarchies

Further training opportunities

Active health care

Flexible working models

Financial benefits

Company events

Job summary

A leading technology firm in Munich is looking for a System Engineer to take ownership of a global Loadbalancer platform. The ideal candidate will have 5+ years in infrastructure design, expertise in HAProxy and/or Envoy, and be proficient in GitOps tools. Responsibilities include defining rollout strategies, monitoring metrics, and establishing security policies. This role offers flexible working models, extensive training and health care benefits, and a supportive work culture with clear values on respect and diversity.

Qualifications

• 5+ years of experience in designing and operating infrastructure at scale.
• Expertise in HAProxy and/or Envoy, including advanced configuration.
• Strong proficiency in GitOps tools and CI/CD pipelines.
• Programming experience in Lua, WASM, Python, or Bash.

Responsibilities

• Own the design and operation of the Loadbalancer platform.
• Monitor and optimize metrics such as response times.
• Define rollout strategies and implement GitOps pipelines.
• Establish security policies for TLS and traffic management.
• Present architectural strategies to stakeholders.

Skills

Infrastructure design

HAProxy expertise

Envoy configuration

GitOps proficiency

CI/CD knowledge

Programming in Lua

Debugging skills

English communication

Education

Degree in Computer Science or equivalent

Tools

GitLab Runners

Debian packaging

Vault

Job description

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.

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 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: 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 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.

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, LinkedIn 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