Lead Full Stack Engineer Automation

About us

Eternal Sun is an innovative, fast‑growing high‑tech company based in The Hague. With over 65 colleagues, we develop and build everything in‑house, creating the future of solar energy. Our simulators mimic sunlight to test solar panels in detail, supporting the world’s largest solar panel producers and leading R&D labs.

As a Full Stack Developer you will work on the software from end to end – building a sleek front‑end, controlling machines and processing data. You will collaborate closely with engineers, mechanics and customers worldwide, ensuring no two days are the same.

• Developing and maintaining software for control, data acquisition and visualization
• Building a scalable full‑stack architecture (Python backend, Angular front‑end, Java/Spring data layer)
• Devising and implementing new features in consultation with users and colleagues
• Controlling our sun simulators from the PC (hardware/software integration)
• Thinking about the technical direction of our platform (long‑term choices)
• Supporting customers and service engineers remotely (and sometimes on location)
• Working in an informal, results‑oriented environment with plenty of room for personal initiative

• At least 6‑8 years of experience as a Full Stack Developer
• Extensive experience with Angular (preferably version 8, 9 or 10)
• Good knowledge of Python (for backend and machine communication)
• Familiar with Java / Spring Boot and SQL databases
• Experience with data visualization and UI development
• Affinity with hardware, machines or industrial automation is a big plus
• Independent, proactive and you enjoy working in a technical team
• Bonus points:
  
  experience with PLC programming or AWS

• Competitive salary and 8% holiday pay
• Annual performance bonus
• Travel allowance of €0.23 per kilometer
• 25 vacation days with the possibility to buy extra
• Pension scheme with extra modules for more security
• A personal development plan (training, courses, coaching)
• An extensive lunch at the office every day (free!)
• Flexible working hours
• A one‑year contract with the prospect of a permanent employment relationship

• Everything under one roof: our simulators are built, tested and improved here, so you can immediately see and test what you develop
• International impact: your software runs worldwide at leading customers
• Freedom to innovate: room for new tools, techniques and even setting up a completely new platform in the long term
• Short lines, big effect: your ideas really have impact here

Interested? Do you see yourself fulfilling this role? Apply now.