Backend Engineer, ClickHouse

The role

We're looking for a Backend Engineer to join our small, focused ClickHouse team. You'll work on the systems that power our managed ClickHouse service – building, scaling, and operating infrastructure that thousands of customers depend on daily. You'll write Python that orchestrates database lifecycle operations, dig into Linux internals when things get interesting, and ship features through a well-established CI/CD pipeline. You'll work in a modern async-first Python codebase alongside engineers who care about code quality, type safety, and automation. If you have experience with ClickHouse internals or C++ – even better. But what matters most is strong backend fundamentals and a genuine interest in databases and distributed systems. Design, build, and maintain backend services in Python (FastAPI, asyncio, psycopg2) that manage the ClickHouse service lifecycle Work with CI/CD pipelines (Buildkite, GitHub Actions) to ship code reliably and often Investigate and resolve production issues across the stack – from Python application code down to Linux system behavior Contribute to technical planning within a small team where your input directly shapes the roadmap Write well-tested, type-checked code and participate in thorough code reviews Use AI coding tools as part of your daily workflow to accelerate development Small team, big impact. You're not a cog -- you'll shape the technical direction of a product used at scale. Real engineering problems. Database orchestration, distributed systems, performance at scale -- not CRUD apps. Modern tooling. Strict type checking, automated formatting, security scanning, and AI-assisted development are the norm, not aspirations. Helsinki-based, hybrid. The team is in the office 3 times per week.

What we offer

• Participate in Aiven’s equity plan.
• Balance work and life with our hybrid work policy.
• Choose the equipment you need to set yourself up for success.
• Use your Professional Development Plan budget for learning opportunities.
• Receive holistic wellbeing support through our global Employee Assistance Program.
• Inquire about our Global Time Off Commitment (Parental and Sick Leave, as well as Personal Time)
• Enjoy country-specific benefits for our global cast.