> Markdown version of [/jobs/ext/1276969-energy-systems-data-engineer](https://www.wearedevelopers.com/jobs/ext/1276969-energy-systems-data-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Energy Systems Data Engineer - **Company:** TWAICE Technologies GmbH - **Location:** München, Germany (Remote available) - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Cloud Database, Code Review, Python (Programming Language), Operational Data Store, Standard Sql, Software Engineering, Apache Spark, Databricks - **Published:** July 15, 2026 - **Apply:** https://www.careerjet.de/jobad/de239fea65909368c2811e7daf230bbb84 ## About the Role * 2-5 years of professional experience, with hands-on exposure to energy hardware systems (ideally BESS) in an operational, engineering, or analytical role * Strong Python and SQL skills; able to turn exploratory insights into robust, production-ready, version-controlled software * Ability to derive meaningful KPIs from raw datasets, grounded in real-worlds operational understanding of energy systems and time-series data (e.g.SCADA, BEMS, inverter logs) * Solid software engineering fundamentals (testing, code reviews, maintainability) and experience collaborating effectively across cross-functional teams in fast-paced environments * Excellent English verbal and written communication skills * It's a plus if you have experience with cloud data tools (AWS, Spark, Databricks) or have worked directly with battery storage projects at system level ## Description The energy transition runs on batteries. As renewable energy reshapes the global power system, batteries are taking center stage. Making them reliable, safe and scalable are the defining challenges of the energy transition. At TWAICE, we build software that turns battery data into insights, so that we can help the world reach net zero faster. As an Energy Systems Data Engineer at TWAICE, you combine hands-on experience with energy hardware systems - ideally Battery Energy Storage Systems (BESS) - with the analytical skills to turn raw operational data into meaningful insights. You know how these systems behave in the field, and you know how to work with the data they produce. You are comfortable writing production-quality code to implement and deliver your analyses - not just scripts for your own use, but software that runs reliably in our product and is maintainable by the rest of your team. Your daily business will involve * Analyse operational data from BESS components - battery modules, racks, inverters, and energy management systems - to identify patterns, anomalies, and failure signatures * Develop and refine KPIs and metrics that give fleet operators and asset managers actionable visibility into system performance and health * Work closely with product and engineering teams to translate your analytical findings into features that ship to customers * Implement your analyses as well-tested, production-ready code that integrates with our platform * Forge a strong collaboration between our data engineers and energy domain experts to validate analytical approaches against real-world operational circumstances * Participate in customer-facing discussions where domain credibility matters - helping scope integrations and understand fleet-specific operational contexts ## Related Videos - [From Messy Queries to Scalable Systems - How Data Engineering actually works](https://www.wearedevelopers.com/videos/100203-from-messy-queries-to-scalable-systems-how-data-engineering-actually-works) - [How building an industry DBMS differs from building a research one](https://www.wearedevelopers.com/videos/768-how-building-an-industry-dbms-differs-from-building-a-research-one) - [Are Code Reviews Worth It? Insights from 16 Years of Review Data](https://www.wearedevelopers.com/videos/1135-are-code-reviews-worth-it-insights-from-16-years-of-review-data) - [Cutting LLM Costs Without Cutting Quality: How to Beat Proprietary LLMs with Fine-Tuned Open Source](https://www.wearedevelopers.com/videos/100151-cutting-llm-costs-without-cutting-quality-how-to-beat-proprietary-llms-with-fine-tuned-open-source) - [Flex your Energy: Building a Cloud-Native Platform for Renewable Energy Communities](https://www.wearedevelopers.com/videos/1990-flex-your-energy-building-a-cloud-native-platform-for-renewable-energy-communities) - [Analytics in the Age of Agentic AI: A tour of ClickHouse and Langfuse](https://www.wearedevelopers.com/videos/100240-analytics-in-the-age-of-agentic-ai-a-tour-of-clickhouse-and-langfuse) ## Related Articles - [A Guide to Green Tech and Green IT Careers](https://www.wearedevelopers.com/magazine/374-a-guide-to-green-tech-and-green-it-careers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)