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Backend Software Engineer

Weheat

Duizel
Full-time
2-5 years experience
On-site

Key Skills

Backend development
Python
Java
Node.js
Scalable architectures
APIs
Data flows
Cloud environments
SQL
NoSQL
Clean code
Hardware collaboration

Job Description

At Weheat, we are building the next generation of heat pumps: cleaner, smarter, and affordable for as many households as possible. From our high-tech facilities in Duizel (Eindhoven region), we develop, test, and manufacture our own heat pumps—from initial concept to scalable production. In Duizel, everything comes together: engineering, prototyping, testing, and production. You work here daily with other engineers, close to the hardware and real-world application. We work closely with our hub in Utrecht, but strongly believe in on-site collaboration when it comes to complex technology. Our culture is down-to-earth and ambitious, with a strong sense of ownership, short lines of communication, and a clear focus on progress. Your role As a Backend Software Engineer, you build the systems that make our heat pumps smart and scalable. You develop backend services that collect, process and expose data for monitoring, optimisation and product development. One day you’re working on robust APIs and data models; the next you’re analysing field data to improve performance and reliability. You collaborate closely with embedded, control and product engineers. Working close to the hardware means you immediately see how your software impacts real products and real customers. You help shape backend architecture, make deliberate technical choices and build systems designed to grow with Weheat. This is you You’re a backend engineer who enjoys ownership and building software with real-world impact: Experience with backend development (e.g. Python, Java, Node.js or similar) A solid understanding of scalable architectures, APIs and data flows Experience with cloud environments and databases (SQL and/or NoSQL) You write clean, maintainable and testable code You enjoy collaborating with hardware- and product-focused teams You take ownership and can explain and defend your technical decisions You’re willing to work on-site in Duizel, close to the product You communicate well in Dutch and/or English What we offer At Weheat, you don’t build abstract features — you build software that directly affects physical products in people’s homes. Direct impact on clean energy, lower CO₂ emissions and comfortable homes A key role in the backend architecture of our heat pump platform A fast-growing cleantech scale-up without heavy bureaucracy High autonomy and responsibility in technical decision-making Close collaboration between software, hardware and operations in Duizel Competitive salary and solid benefits, aligned with your experience A team that values substance, collaboration and ownership

Core Responsibilities

You will build and maintain backend services to collect, process, and expose data for heat pump monitoring and optimization. You will collaborate with embedded and product engineers to shape backend architecture and ensure software reliability.

Requirements

You should have experience in backend development with languages like Python, Java, or Node.js and a solid understanding of scalable architectures and databases. The role requires a willingness to work on-site in Duizel and the ability to write clean, maintainable, and testable code.

Benefits

  • Competitive salary
  • Direct impact on clean energy
  • Autonomy and responsibility

About Weheat

Industry: Renewable Energy Equipment Manufacturing

Company size: 51-200 employees

Weheat is a leader in sustainable heating solutions, specialized in heat pumps. Our products, known for their energy efficiency, ease of installation, and smart connectivity, contribute to a greener future. With the Blackbird, Sparrow, and Flint, among others, we offer an A+++ solution for both hybrid and all-electric systems, built around comfort and efficiency. Discover Weheat: warmth, innovation, sustainability.

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