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Backend Engineer, ClickHouse

Germany, Berlin Employment contract · Job Posted May 05, 2026
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Job Description

We’re a global team of over 400 people, working together to push the boundaries of open-source technology and multi-cloud solutions. Our vision is to help developers, builders, and creators bring their ideas to life with speed and simplicity, by providing a cloud data platform that makes open-source databases, search, streaming, and application infrastructure easily accessible to everyone. 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.

Job Responsibility

  • 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

Requirements

  • Solid Python development skills -- you write clean, production-grade Python and understand async patterns (asyncio, aiohttp)
  • Strong understanding of databases -- you know how relational and analytical databases work under the hood, not just how to query them
  • Deep Linux knowledge (Fedora preferred) -- comfortable with systemd, process management, filesystem internals, and debugging at the OS level
  • CI/CD experience -- you've built and maintained delivery pipelines, not just used them
  • Familiarity with automated testing -- unit, integration, and system tests are part of how you work
  • Experience with AI coding tools -- you actively use AI-assisted development in your workflow and understand how to get the most out of it
  • Distributed systems awareness -- you understand the challenges of running services across multiple nodes and regions
  • Fluent English -- written and verbal

Nice to have

  • ClickHouse experience -- operational knowledge, query optimization, or contributions to the project
  • C++ or C -- ability to read and contribute to database engine code
  • Cloud infrastructure experience (AWS, GCP, Azure) with Terraform or similar IaC tools
  • PostgreSQL operational experience
  • Software and network security knowledge

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

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