I’m Evertjan, 24 years old, and I live in Nunspeet. It’s a beautiful village surrounded by nature on the edge of the Veluwe, where I often go for long walks in the forest. When I’m not walking or working, I like going to the gym and taking care of my balcony garden, which is getting a bit out of hand. Besides that, I enjoy binge-watching shows, and I like to cook and bake.
I joined Sollit about a year and a half ago as a software developer. I work in a development team where we improve and maintain the software, ensuring everything runs smoothly. We also build new features that add value and help meet the needs of our users.
The role of a software developer has changed a lot over the years, not just at Sollit. AI is really reshaping how we work. Where two years ago you would do most of the programming yourself and use AI mainly for feedback or questions, now AI can handle a large part of the programming.
With new technologies like Claude Code, we can move much faster and generate solid, secure code within minutes. The role of a developer is therefore shifting more toward managing AI tools that take care of repetitive programming tasks, while acting as a quality gate to ensure the generated code works and is safe. We still apply changes where needed and carefully test every feature before it is used.
At Sollit, the role of a developer has also changed. The development teams are larger, and communication is more streamlined. Because development time is shorter with the help of AI, we are also able to release updates faster. This means developers have more control over and responsibility for software changes.
Sollit gives me a lot of freedom in my work. I have impact on what projects to work on and have the time to make sure the quality is high. There is also a lot of room to innovate, especially in the area of AI.
The entire development department is learning how to integrate AI into our workflows and continuously shares findings with each other, which helps us improve as a team. This creates an environment where we are not only focused on delivering features, but also on improving how we work.
We actively experiment with new tools and approaches, and there is a strong culture of collaboration and knowledge sharing.
For me, Sollit works best when everyone works together. There are many teams across different departments, so clear communication is important to keep everything running smoothly. When departments work closely together and share information effectively, expectations are clear from the start and we are all working toward the same goal.
It also helps us respond faster to challenges and deliver better solutions for our customers. Development at Sollit is largely teamwork. Whether it’s building new features or making sure the system runs as it should, we are always collaborating within the team.
Heat-Box is a software solution that helps calculate “heat loss,” which is an important value when installing heat pumps in homes.
For this project, we integrated part of the Heat-Box software into Sollit, making it possible for our clients to use these calculations directly when offering and installing heat pumps. To calculate heat loss, a lot of information about a house is taken into account, such as yearly gas consumption, the building year, and insulation details.
Based on this data, the software determines how much energy is needed to efficiently heat the home. This helps move away from rough estimations and toward more data-driven decisions. The heat loss value shows how much power a heat pump needs to properly heat a home, which is important for efficiency and lifespan.
The project required a lot of communication between developers, product, and the external party Heat-Box. We started with a few weeks of planning, during which we created a plan for the first version of the integration.
After that, development started, with weekly check-ins between Sollit and Heat-Box to discuss progress and any blockers. Once development was mostly completed, we moved into the testing and feedback phase. Here, Heat-Box played an important role by testing the integration and providing feedback that we used to improve the final result.
I am most proud of how the development team built this project. We used newer technologies than in other parts of the software. This was experimental at first, but it turned out to make the development of the integration easier.
Using these technologies also made the integration faster and improved the overall user experience. It worked so well for the Heat-Box integration that we have started rolling it out across the application.
My name is Liset, 23 years old and I live in Zwolle. Outside of work I like to stay active. I play as a setter in a volleyball team, take kick boxing classes every week and occasionally I hit a ball on the squash or padel court. I'm also a big music fan. You often see me volunteering behind the bar at Hedon, at (techno) festivals or at the local pub. Moreover, I love traveling and going on trips. My next adventure? Vietnam in April!