DataEngineer(m/f/d)

**Berlin Mitte · Hybrid (2 days/week remote) · €60,000–75,000 + VSOP equity ** **Help us decarbonize cement and concrete - not tomorrow, today. ** alcemy is on a mission to keep 100 million tons of CO₂ out of the atmosphere every year by 2030. Making concrete accounts for around 8% of global CO₂ emissions, and our machine-learning software runs inside cement and concrete plants 24/7 to cut it - without sacrificing quality or driving up costs. We're already live in a third of Germany's cement plants and 30+ ready-mix concrete plants. **The role ** As our Data Engineer, you'll own the data that powers everything we do - the flow of cement and concrete plant data from raw, messy ingestion through cleaning, to the pipelines our machine-learning recommendations run on. The split is roughly 80% data engineering, 20% backend, and it's refreshingly hands-on with customers: you'll dig into real-world data, explain what you find to non-technical people, and make getting data into alcemy dramatically easier. **What you'll do** * Build and own the pipelines that ingest and clean messy plant data into something our ML can use * Help us move from strict, structured data requirements toward flexible, AI-powered ingestion - so customers onboard with far less friction * Track down data anomalies and explain your findings to customers in plain language * Build and maintain the APIs and PostgreSQL databases behind our products, and keep production running smoothly * Work shoulder to shoulder with customers, sales, and customer success - translating between the technical and the non-technical **Requirements** **You'll thrive here if...** _**Above all, you care about climate change and want your work to count. **_ **Must-haves** * You've shipped production Python * You love getting to grips with an unfamiliar codebase quickly, and you're eager to start delivering work that matters from the start * You're comfortable working directly with customers, sales, and customer success - patient,