Developer jobs in Germany

We are looking for our first Senior Site Reliability Engineer (SRE) in Berlin. You’ll work on reliability, scale our infrastructure, and help define how SRE is done at koppla – while staying hands‑on. You’ll work side‑by‑side with our backend engineer and a team of smart, driven product engineers, taking ownership of AWS, Postgres, Kafka and CI/CD pipelines. While this role is SRE focussed, you will also get to work on the backend and help build new features.

Compensation: €75k-100k + 25‑35% equity.

Location: Berlin (Hybrid, 2+ days / week in office)

At koppla, we’re a fun and ambitious team on a mission to help the construction industry build more efficiently. We’re already partnering with top construction companies and delivering impressive results for our customers (multi‑months speed‑ups discovered through koppla). Our ambitions are backed by leading VCs (Earlybird, Newion) and industry angels as we tackle a billion‑dollar opportunity problem in an under‑digitized and underserved market. Our culture is core to who we are – and we’ve built one we’re genuinely proud of. We aspire to create an environment of few but very high‑performing team members (similar to Netflix or Ashby).

• Own & evolve infrastructure: keep koppla’s systems highly available, scalable, and secure.
• Incident response: lead on‑call rotations, run blameless post‑mortems, and continuously improve our response processes.
• Systems: design, operate, simplify (e.g. swap Kafka with SQS) and optimize services on AWS (S3, Dynamo, Aurora, ECS, IAM, Lambda).
• Database reliability: own Postgres administration (backups, performance tuning, index management) and ensure resilience at scale.
• Observability: improve monitoring & alerting (AWS, Sentry and anything you recommend).
• Networking: manage VPCs, routing, load balancing, and related components.
• CI/CD: automate and streamline pipelines (GitHub Actions).
• Collaboration & DX: work closely with our TypeScript‑heavy product team to embed reliability and simplicity into every release in a truly cross‑functional process.
• Features: besides infra‑related work, you will help bring in value for customers through backend feature development.

Stack: NodeJS, TypeScript, AWS, GraphQL (Apollo), PostgreSQL, Terraform, Kafka, Socket.io. You should be familiar with some of these or similar technologies.

This role is perfect for a DevOps/SRE engineer with 4‑6 years of experience looking to grow their skills and make a meaningful impact at a company that is approaching product‑market fit (€2M ARR). You are likely a great fit if:

• you optimize platform and processes with a dual focus on developer productivity and customer experience.
• you take a pragmatic approach, harmonizing infrastructure cleanliness with speed of execution.
• you have solid engineering fundamentals, write clean and efficient code, and are eager to continue improving your skills.
• you have a solid understanding of performance optimization, distributed architectures, and security for large‑scale systems.
• you can provide a proven track record with incident management and production troubleshooting.
• you thrive in a fast‑paced startup environment, enjoy taking ownership of your tasks, and stay proactive in solving challenges.

• A company of co‑owners through tax‑optimised equity grants.
• A culture with a focus on transparency, respect, ownership, collaboration and the well‑being of each team member on this exciting journey.
• An environment that values hard‑work while still allowing work‑life / family integration through 28 days PTO, flexible working hours and a hybrid setup.
• Dog‑friendly office in Berlin with free lunch, besides beverages and snacks.
• And more: annual personal training budget of €1,500, company‑supported pension scheme (BAV, 30% contribution), Urban Sports Club membership, and more.