Senior Site Reliability Engineer (f/m/d)

Together towards a more sustainable future

At ioki, you’ll get the space and trust to contribute right away and take on responsibility-all for one reason: to connect people and help shape the future of public transport. For the mobility of tomorrow, we assemble agile teams of leading minds in their fields. Become part of ioki, collaborate with the best talents and industry leaders, learn from them, and grow professionally.

We’re currently looking for you as a Senior Site Reliability Engineer (f/m/d) to join our team in Frankfurt am Main.

Your tasks and responsibilities

• Deploy and automate a high availability infrastructure with Terraform, Kubernetes, OpenStack and Ansible
• Maintain and keep our high availability instances running
• Collaborate with other teams and software developers across ioki to deliver the most stable and secure product for customers and passengers
• Uphold and improve DevOps and IT security standards, tooling and processes

• Runs a secure and resilient platform/CI by enforcing IAM, hardening, secrets management, backup/DR, and integrity-checked releases.

• Spin up new instances via infrastructure as code (IaC) and automating the process in a peer-reviewed way (Terraform, Kubernetes, Gitlab, Ansible)
• Create and integrate new monitoring exporters that work with our existing Prometheus and Grafana stack to allow us to stay on top of what’s happening in our infrastructure
• Review our TLS cipher selection for best compatibility and security
• Implement or review architectural decision records in Markdown for introducing new technologies
• Improve our high-available PostgreSQL or Container clusters so that we can easily scale our infrastructure according to the increasing demands of our platform

Your profile

• You enjoy and have experience in building, maintaining and securing modern cloud infrastructure
• You have knowledge in applied cryptography and security (e.g. cipher selection, protocol security, attack vectors, etc.)
• You understand networking protocols (TCP/IP, UDP, VPN, ARP)
• You enjoy deploying critical services in a high availability environment
• You want to contribute clean code to our infrastructure automation codebase
• You have the ability and willingness to learn quickly and in a self-guided way. While we already have a DevOps toolset and programming languages we use, experience with them is not a hard requirement. Much more than that, we care that you have general operations and software development skills, high standards and take pride in your work.
• You enjoy working with multiple people on the same codebase and tools, know what that takes and are open to sharing and improving our work together
• You want to take responsibility of your work and build sustainable solutions that stand the test of time
• You can implement security policies and document them properly

• You like digging into the core of things, like hunting bugs in the C code of an open source application we're using in our stack
• You are capable of doing security reviews and pentests (OWASP10 and beyond)

Why us?

• We don’t just talk about work-life balance, diversity, a hands-on mentality, and agile workflows-we live them every day.
• Enjoy flexibility in scheduling your core hours and the freedom to work remotely or from our office.
• Beyond competitive compensation, we offer extensive perks: public transit passes (Jobticket), discounts on local/regional travel, company pension plans, corporate bike leasing, fitness/wellness benefits, subsidized vacation and leisure deals, and much more.
• We invest in your growth with an annual training budget for professional development.
• Our modern office is centrally located in Frankfurt am Main, with excellent transport links.
• You’ll join a passionate, interdisciplinary team driving innovation together.