Heating Expert – Customer Success Engineer

Green Fusion

full-time

Posted on: 10/15/2025

Location Type: Hybrid

Location: Berlin • 🇩🇪 Germany

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Mid-LevelSenior

About the role

You perform optimizations to improve the efficiency of heating systems based on measurement data.
You act as the technical point of contact for customers on complex questions and issues.
You serve as a bridge between Revenue, Product (hardware and boiler-room systems), Operations and Optimization.
You support the sales team with technical questions during demo calls and advise heating technicians.
You work as an interface to the product team, conveying customer requirements and technical feedback.

You have a background in energy engineering, ideally with a completed engineering degree.
You possess solid technical knowledge and ideally have experience with heating systems and their optimization, but this is not a requirement.
You have strong communication skills and experience in customer-facing roles.
You are able to explain complex technical matters in a clear and understandable way.
Ideally, you have experience in technical sales or technical support.
You have very good German language skills (C2 level).

Benefits

Employee benefits such as Urban Sports Club or Become1.
Flexible working hours and home office — you can continue to work from home even after the pandemic.
Ongoing professional development — whether through on-the-job challenges, our open feedback culture, or funded training programs, there are plenty of opportunities to learn.
Direct impact through your role — with us you can actively advance the energy transition and contribute daily to the fight against climate change.
We value our team — regular team events are important to us.

Tip: use these terms in your resume and cover letter to boost ATS matches.

energy engineeringheating systemssystem optimizationtechnical supporttechnical sales

communication skillscustomer-facing experienceexplanation of technical matters

engineering degree