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# Backend Software Engineer

- **Company:** Weheat
- **Location:** Oosterhout, Netherlands
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Application Programming Interfaces (APIs), C Sharp (Programming Language), Databases, MongoDB, SQL Databases, Data Streaming, Backend
- **Published:** November 6, 2026
- **Apply:** https://www.nationalevacaturebank.nl/vacature/d96d76f9-ef05-4b74-9305-dd4c8f9a5aeb/backend-software-engineer

## About the Role

+ Experience with backend development, preferably with C#/.NET, or you are confident you can pick it up quickly
 + A solid understanding of scalable backend architectures, APIs and data flows
 + Experience working with databases. Our stack includes SQL, MongoDB and TimescaleDB
 + You care about writing clean, maintainable and well-tested code
 + You communicate well in English or Dutch
 + You enjoy working in a dynamic environment that's always on the move and growing every day
 + Familiarity with cloud environments

## Description

You build the backend services that collect, process and expose heat pump data for monitoring, optimisation and product development. Your APIs and data models turn field data into better performance and reliability for heat pumps in people's homes.
Controleer of u voldoet aan de vaardigheidseisen voor deze functie, evenals de bijbehorende ervaring, en solliciteer vervolgens met uw cv hieronder.
What you'll do

 + You build and maintain backend services that collect, process and expose data from our heat pumps.
 + You design robust APIs and data models for monitoring, optimisation and product development.
 + You analyse field data to improve the performance and reliability of our heat pumps.
 + You work with embedded, control and product engineers, close to the hardware in Duizel.
 + You help shape the backend architecture and make deliberate technical choices for a platform that grows with Weheat.
About Weheat
Heating is one of the largest remaining sources of CO emissions in our homes. To tackle that, we want Weheat to become Europe's leading player in residential heat pumps. We develop, test and build our own heat pumps, from first design to production at scale in the Brainport Eindhoven region. What sets us apart: we develop hardware and software together. That makes the heat pump easier to install, and it steers itself smartly on comfort and energy prices. In Utrecht, we drive our commercial growth and build our digital products.