Full Stack Engineer, Frontend-focused (Next.js + Django)

Job description

At DeWarmte, we make smart, affordable heat pumps that help homes move away from gas. We design the hardware, software and services ourselves, so the quality of our software directly shapes how well our products work in people's homes. We're growing fast, and the customer journey is growing with us. That's why we're looking for a frontend-focused Full Stack Developer to improve our web application - from the first visit and heat-pump advice to quotation, planning and installation. You'll spend most of your time in Next.js and React, making every interaction clear, fast and genuinely pleasant. You'll work primarily in our TypeScript frontend (Next.js Pages Router, React 18), with focused changes to our Django backend when a feature needs them. You'll take customer-facing work from idea to production and see directly what it does for conversion, customer satisfaction and the workload of our teams. AI tools are already part of how we build software. We use them where they help us move faster, but we do not lower the bar: anything we ship still needs to be secure, maintainable and correct. You'll help us get better at both. Why this role matters Make switching to a heat pump simple, clear and trustworthy—from first discovery to installation and beyond. You'll join the team behind a web application that our customers use every day. You'll get to know it deeply, keep it reliable and improve it as we grow. Just as important: you'll help make sure knowledge and ownership are shared across the team. What you'll do Build a great customer experience Build, test and deploy customer-facing features in Next.js and React, with supporting Django and API changes where needed. Turn customer needs and designs into clear, responsive and accessible interfaces. Build the flows that guide customers from first interest to advice, quote, order, planning and installation. Keep improving conversion, speed and usability based on data and customer feedback. Support customers after installation Improve the flows customers use after installation, from questions and service requests to documents and updates. Connect the web application with the workflows used by our sales, planning, installation and service teams. Remove manual work and friction for customers and colleagues alike. Strengthen the frontend platform Improve frontend architecture, reusable components, performance, accessibili…