Senior Platform Engineer (f/m/d)

ABOUT US

Zenjob https://www.zenjob.com/en/ is an AI-powered flexible staffing platform that has efficiently connected companies and temporary workers since 2015. Companies use our platform to book ready-to-work staff in real time, while students use our app to find part-time jobs that conveniently fit around their studies. Over 40,000 students and 1,000 partner companies from logistics, retail, and hospitality in all major German cities share our belief that good work is not a coincidence. It is the result of innovative technology and genuine commitment. Good work starts here.

The Role

We're looking for a Senior Platform Engineer to join our Platform & Infrastructure team, one of three teams inside Zenjob's Platform organisation alongside Data Platform and IT.

The team owns the foundations every engineer at Zenjob builds on: AWS, Kubernetes, CI/CD on GitHub Actions, observability (Grafana, Prometheus, Datadog, Incident.io http://Incident.io), and the growing set of AI platform tools (n8n, LiteLLM, Retool, and whatever comes next). We also build and maintain an in-house CLI in Go that engineers across the company rely on every day. It's a small, senior team, and this role rounds us out.

We expect you to bring strong technical direction, pair closely with the other two engineers, and partner with the Data Platform and Platform Enablement teams to ship real improvements for the rest of engineering.

If you think of infrastructure as a product, reach for Terraform as a reflex, and enjoy being the person engineers come to when something needs to "just work", this role is for you.

What You Will Be Doing

• Provide platform support to engineering teams across Zenjob. You'll be the go-to person when someone is blocked on infra, CI/CD, deploys, or observability.
• Manage and evolve our AWS estate, covering cost, security, and reliability across the services we run.
• Write Terraform for everything. Infra changes go through code review, not the console.
• Operate and extend our observability stack (Grafana, Prometheus, Loki, Datadog, Incident.io http://Incident.io) so teams can see what their services are doing and respond quickly when they don't.
• Contribute to our in-house Go CLI that engineers use to interact with the platform. Add commands, fix bugs, improve ergonomics.
• Treat the platform as a product, with clear interfaces, good docs, fewer sharp edges, and measurable adoption.
• Moving the needle on the KPIs PIE is measured against: infrastructure cost, engineering productivity, incident response, and service availability.
• Support Zenjob's AI transformation. Make tools like n8n, LiteLLM, and Retool reliable, secure, and self-serve for non-platform engineers, and help onboard whatever comes next.
• Collaborate with the Data Platform team on shared tooling (Secoda, Airbyte, Airflow, Snowflake) where infra and data overlap.

What You Bring

• 5+ years in platform, DevOps, SRE, or infrastructure engineering roles.
• Deep, current AWS experience designing, running, and debugging production workloads.
• Strong Terraform skills. You know when to write a module and when not to.
• Kubernetes operator, not tourist. You're comfortable with the control plane, networking, and the ways things break.
• Production experience with at least one mainstream observability stack (ideally Datadog and/or Prometheus + Grafana).
• Working knowledge of Go, or solid experience in another systems language and the willingness to get productive in Go quickly. You should be comfortable reading, extending, and debugging a real codebase, not just writing glue scripts.
• A platform-as-a-product mindset. You care about developer experience, documentation, and making yourself unnecessary.
• Comfortable operating as a technical peer across teams, picking up work proactively instead of waiting to be told.
• AI-first mindset, leveraging modern AI tools such as Cursor, Claude Code or similar to improve workflows and impact.
• High ownership, proactively identifying problems and driving solutions end-to-end.

Nice to Have

• Running AI/ML platform tooling in production (n8n, LiteLLM, Retool, LangChain-adjacent infra).
• Experience building or maintaining internal developer tooling or CLIs.
• Experience with data platform components (Snowflake, Airflow, Airbyte, Secoda).
• Incident commander experience.
• Real FinOps practice. Cost optimization that shows up on the invoice, not just the dashboard.

What we offer

• Innovative mission: Together we create something new. Work in a dynamic set-up where you learn a lot and your every idea is heard.
• Unique team spirit: We can rely on each other blindly and celebrate all successes together as a team.
• Vacation: Recreation and further education is important, which is why we offer 28 days of paid vacation (increased by 1 day for every 2 calendar years of service with us, up to a maximum of 30 days), 1 day of special leave for community service, 5 days of paid educational leave, and the possibility of unpaid leave
• Hybrid working model: We love our brand new office in Prenzlauer Berg. But sometimes you need a little more flexibility. Zenjob’s flexible working model combines the best of both worlds, so you can work remotely up to 2 days / week (1 day, during the first 6 months, so we can guarantee you the best onboarding).
• Dog-lover: If you have a dog, feel free to bring it with you. We don’t bite and always have a bowl of water in our range of drinks
• Personal growth: Ongoing focus on your personal development (annual training budget of EUR 750, mentoring opportunities, constant career development conversations)
• Healthy mind in a healthy body: With us you will receive a 30 EUR Urban Sports Club grant to keep you fit. In addition, we have a small sports room in the office ourselves.
• Always mobile: You will receive EUR 40 credit per month for NAVIT, https://www.navit.com/ a sustainable mobility tool for public transport, bike sharing and much more.
• Legendary Events: Quarterly team events, winter and summer parties, budget for birthdays and anniversaries of our employees

If this sounds good, then we’d love to find out more about you! Apply and send in your application.

🎥 Watch our Office Tour video https://youtu.be/xa7Qb8j9TKw?si=mbdoz-vzZlAyV4q-.

We invite you to visit our careers page https://career.zenjob.com/en/, follow our LinkedIn https://www.linkedin.com/company/zenjob/ page and connect with us on Instagram https://instagram.com/insidezenjob?igshid=OGQ5ZDc2ODk2ZA%3D%3D&utm_source=qr.

We are proud to be an equal opportunity employer. We are committed to judging every qualified individual on their ability, regardless of age, gender identity, ethnicity, sexual orientation, disability status, or religion. There is no need to add your photo and age to the application.