Senior Product Engineer
Clera
<h3>About the Role</h3><p style="min-height:1.5em">This is a high-ownership product engineering role at a fast-growing, widely adopted open-source AI engineering platform — think the observability layer for the LLM era. The company is trusted by major enterprises and thousands of developers worldwide, with tens of millions of monthly SDK downloads.</p><p style="min-height:1.5em">Product engineers here own the full lifecycle of a feature: from talking to users and writing the spec, through shipping the code, to writing the docs and the public changelog post. No handoffs — you see features through from user problem to production.</p><p style="min-height:1.5em">Recent examples of features owned by a single engineer include a major agents release, a TypeScript SDK rewrite on OpenTelemetry, and a hosted MCP server for prompt management. That's the scope and ambition of this role.</p><h3>What You'll Do</h3><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Own features end-to-end</strong> — user calls, spec writing, implementation, documentation, and public-facing changelog posts. No handoffs, full accountability.</p></li><li><p style="min-height:1.5em"><strong>Work the full stack</strong> — React frontend, Next.js backend, ClickHouse analytics, and Python/TypeScript SDKs. You touch whatever the feature demands.</p></li><li><p style="min-height:1.5em"><strong>Build in the open</strong> — write code that ships to the open-source community, respond to GitHub issues, review public PRs, and contribute to developer-facing documentation.</p></li><li><p style="min-height:1.5em"><strong>Talk to users</strong> — participate in user interviews and translate feedback into product decisions and engineering solutions.</p></li><li><p style="min-height:1.5em"><strong>Contribute to platform observability</strong> — work on tracing, monitoring, evaluation pipelines, prompt management, and cost/latency analytics.</p></li><li><p style="min-height:1.5em"><strong>Maintain and distribute SDKs</strong> — help evolve and maintain client libraries used by a large developer community.</p></li></ul><h3>What We're Looking For</h3><p style="min-height:1.5em"><strong>Must-haves (dealbreakers):</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">5+ years of professional software engineering experience building production-grade systems</p></li><li><p style="min-height:1.5em">Located in the EU with the legal right to work in the EU — <strong>visa sponsorship is not available</strong></p></li><li><p style="min-height:1.5em">Able to travel to Berlin and be on-site approximately one week per month</p></li></ul><p style="min-height:1.5em"><strong>Required skills & experience:</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Ability to work EU timezones with regular overlap with CET business hours</p></li><li><p style="min-height:1.5em">Hands-on experience building production-grade LLM applications or infrastructure (e.g. prompt management, evaluations, LLM tracing/observability)</p></li><li><p style="min-height:1.5em">Experience contributing to and maintaining open-source projects in community-visible codebases (public GitHub repos)</p></li><li><p style="min-height:1.5em">Practical experience with containerization and deployment workflows (Docker) and distributing/maintaining SDKs or client libraries</p></li><li><p style="min-height:1.5em">Experience with instrumentation and observability: collecting and analyzing metrics such as latency and cost, and building tracing/monitoring tools</p></li><li><p style="min-height:1.5em">Proven track record of shipping end-to-end product features and working cross-functionally with product managers and designers</p></li><li><p style="min-height:1.5em">Strong written and async communication skills for public-facing code reviews, documentation, and community interactions</p></li></ul><p style="min-height:1.5em"><strong>Nice to have:</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Familiarity with data/analytics systems and columnar OLAP databases (e.g. ClickHouse) or similar scalable analytics stores</p></li><li><p style="min-height:1.5em">Background at companies operating in AI/ML tooling, developer infrastructure, or observability (e.g. Arize AI, Weights & Biases, Braintrust, Comet, or similar)</p></li></ul><h3>Compensation & Benefits</h3><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Salary:</strong> €90,000 – €160,000 per year, depending on experience</p></li><li><p style="min-height:1.5em">Equity participation in a well-funded, high-growth company</p></li><li><p style="min-height:1.5em">Small, high-trust team with significant individual impact and ownership</p></li></ul><h3>Location & Work Arrangement</h3><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Remote-first</strong> across the EU — team members are distributed across Germany, Switzerland, the UK, the Netherlands, Spain, Sweden, Poland, Austria, and France</p></li><li><p style="min-height:1.5em">On-site in <strong>Berlin, Germany</strong> approximately one week per month (travel required and reimbursed)</p></li><li><p style="min-height:1.5em">Core collaboration hours in <strong>CET business hours</strong></p></li><li><p style="min-height:1.5em">Visa sponsorship is <strong>not available</strong> — EU work authorization required</p></li></ul><p>Find <a href="https://www.arbeitnow.com">Jobs in Germany</a> on Arbeitnow</a>