Product Engineer (Growth)

About the Role Join a small, engineering-heavy team building the leading open-source LLM engineering platform — think "Datadog for AI applications." The platform helps teams trace, evaluate, and manage prompts across the full LLM development lifecycle, and is trusted by a large and rapidly growing base of developers at startups and Fortune 50 enterprises alike. The company recently joined forces with a major data infrastructure player, enabling it to move even faster on product while staying true to open-source and self-hosting. As a Product Engineer on the Growth team , you'll own the full funnel — from top-of-funnel awareness through activation, adoption, and expansion — and have real latitude to run bold experiments that directly move the needle on growth. What You'll Do Analytics & data stack: Build and maintain the product analytics infrastructure (e.g. event tracking, BI tooling, columnar databases) to generate deep insights into user behavior and funnel performance. Funnel mapping: Define and instrument core funnels for each product feature; make it easy for the team to monitor activation, adoption, and retention. Experimentation: Design and run A/B tests and growth experiments — from onboarding flows to in-product nudges — to validate hypotheses and improve key metrics. SDK & integration development: Develop and maintain client SDKs and integrations (multi-language, versioned, packaged) that reduce time-to-value for new users. Self-serve & activation: Build in-product experiences, guided flows, and documentation hooks that help customers reach their "aha moment" faster with less hand-holding. Feature adoption & expansion: Identify and act on opportunities to help customers expand from a single product area to the full platform offering. Cross-functional collaboration: Work closely with product, design, marketing, and sales to align on priorities, communicate tradeoffs, and ship impactful work quickly. Open-source community: Contribute to open-source workflows and engage with a vibrant developer community building cutting-edge AI applications. What We're Looking For Required Based in the EU and able to work EU timezones; willing to be in the Berlin office approximately one week per month. Legal authorization to work in the EU without employer sponsorship (no visa sponsorship available). Hands-on experience building or integrating LLM-based applications — including prompt management, LLM evaluation, or observability for LLM systems. Strong SQL skills and experience querying/analyzing product and usage data in analytical or columnar databases (ClickHouse or similar is a plus). Experience instrumenting products for metrics and analytics: event tracking, tracing, and A/B experimentation to drive growth outcomes. Experience developing and maintaining client SDKs or integrations — packaging, versioning, multi-language clients, and release management. Proficiency with Git-based workflows, code review, CI/CD pipelines, and containerization (Docker). Strong product sense and the ability to communicate technical tradeoffs clearly to non-technical stakeholders. Comfortable operating with high ownership and minimal supervision in a fast-moving, small team environment. Nice to Have Experience contributing to or maintaining open-source projects and community-driven development workflows. Background at companies in the AI/ML tooling, developer infrastructure, or data observability space. Compensation & Benefits Salary: €90,000 – €160,000 per year, depending on experience. Equity participation in a high-growth, well-backed company. Work with a focused, experienced, and highly collaborative engineering team. Opportunity to shape the growth trajectory of one of the most widely adopted open-source AI platforms in the world. Location This is a hybrid role based in the EU , with a preference for candidates in or near Berlin, Germany . You'll be expected in the Berlin office approximately one week per month . Candidates across EU timezones (Germany, Austria, Switzerland, UK, Netherlands, France, Spain, Sweden, Poland, and similar) are welcome to apply. Visa sponsorship is not available. Find Jobs in Germany on Arbeitnow