Energy Engineer - Heating Expert (f/m/d)

Your mission at Green Fusion
As an

Your mission at Green Fusion
As an Energy Engineer, you’ll be a key domain expert in our cross functional product teams, shaping how real-world heating systems are analyzed, understood, and optimized through software. You ensure that our algorithms, analyses, and customer insights are grounded in physical reality and deliver real energy savings every single day.
Your Tasks:

• Together with data scientists, you analyze the behavior of heating systems and their components (e.g. heat pumps, CHP units, boilers, storage systems, heating circuits, hot water systems) and help develop algorithms that energetically optimize system operation.
• You translate physical system understanding into models, rules, and KPIs that enable data-driven optimization and decision-making.
• Working alongside data analysts, you design meaningful analyses and indicators for our customer platform, giving operators and asset managers clear insights into efficiency, performance, and optimization potential across their asset portfolios.
• You define and validate alarm rules based on live and historical data to assess the security of supply and early detect operational risks in customer systems.
• You support the validation of control and optimization strategies, ensuring they are safe, robust, and suitable for real-world heating infrastructure.
• You act as a bridge between energy engineering, data, and product teams, helping to align technical feasibility, physical constraints, and customer value.
  

Your profile

• A strong background in energy engineering, building services engineering, or a comparable field.
• Solid understanding of thermal energy systems, heating networks, and system interactions in real estate or similar applications.
• Experience working with data-driven analyses of energy systems and the ability to derive actionable insights from operational data.
• Interest in collaborating closely with data scientists and software teams to turn physical system knowledge into scalable digital solutions.
• A structured and analytical mindset, combined with a strong sense of responsibility when working with systems that impact real-world energy supply.
• You enjoy explaining complex energy-related topics clearly to both technical and non-technical stakeholders.
• Bonus Points: Experience with data models and their application in the heating domain.
  

We know that nobody fits a job description 100%. If you see yourself in most of these points and are passionate about our mission, please apply!
About Us
We are Green Fusion. We help the housing industry to make the heating and energy transition more sustainable – for a green future without compromise. By providing intelligent automation and optimization for a building's entire energy ecosystem, we reduce CO₂ emissions where it matters most. Whether it’s heat pumps, PV systems, or hybrid setups: our product serves as the interface between hardware and software , making maximum sustainability economically viable. Together, we are transforming the building sector and making efficient, climate-neutral energy the new standard.
While we are still considered pioneers today, with you by our side, we will soon dominate the market! Starting in the DACH region, and then across all of Europe. You can expect a motivated, open-minded, and vibrant team that is passionate about actively shaping the energy transition and growing together.
Our Employee Benefits:

• Urban Sports Club or Become1 vouchers – a monthly bonus to support your lifestyle.
• Work flexibility & Home office – Work remotely from home, at our Berlin office at Schlesisches Tor, or up to 50 days a year worldwide.
• Personal growth & professional development – whether through your personal learning budget, exciting on-the-job challenges, or our open feedback culture.
• Direct impact through your work – join us in actively driving the energy transition and contribute to the fight against climate change every single day.
• We value our team – that’s why regular team events are a core part of our culture.
• The best team Berlin has to offer – and maybe even beyond. Don't believe us? Find out for yourself and apply now!
  

We look forward to your application – our team will get in touch with you soon!

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