C# Software Developer
Confirmed on the employer's own hiring board on Oct 10, 2026. First seen by Alion on Sep 17, 2026.
Are you a Software Developer with a passion for smart home batteries? Join us at NextEnergy!
At NextEnergy, we’re accelerating the energy transition with smart, innovative solutions that make a real impact. As a Software Developer, you play a key role in building technology that helps thousands of households use energy in a smarter, greener and more affordable way.
You’ll join a growing, ambitious team that works every day on the energy of tomorrow. We give you the space to contribute ideas, experiment with new solutions, and build features that deliver immediate results.
Who are we?
More and more of our electricity comes from the sun and wind, which means prices move along with it. Yet many households in the Netherlands are still tied to outdated fixed rates and miss out on the benefits of flexible pricing. We believe there’s a better way. We make dynamic energy accessible to everyone, so you can easily take advantage of cheaper, and sometimes even free, moments.
With smart technology and a fair, transparent approach, we ensure that the energy transition is not only good for the planet, but also for your wallet.
At NextEnergy, you join a fast-growing company where innovation is at the core. A place where we build the future of energy together and grow as a team. We give you the space to make an impact, take initiative and share ideas. Because at NextEnergy, we’re not working around the energy transition, we’re working right in the middle of it.
What will you do?
As a Software Developer, you’ll work within our Smart Home DevOps team, where you get the freedom and autonomy to shape the design, development, and maintenance of our applications together with your colleagues.
When it comes to building our applications, you’ll be involved in the following areas:
Back end: Develop and manage integrations with various home batteries and smart devices within household energy systems
Algorithms: Improve the algorithms that control customer home batteries and other smart devices
Back office: Build internal systems that help streamline and optimize our processes
Customer interfaces: Enhance our customer app that shows users their energy savings and battery performance
In addition, you will:
Collaborate closely with experienced developers, with plenty of freedom to take initiative and shape the products you work on
Be part of a mature, fast-growing startup focused on innovations that accelerate the energy transition
Work on smart home solutions: dive into the integration and control of home batteries and smart devices, an essential and rapidly growing field
Contribute to a product that helps thousands of end users save energy through intelligent control of home batteries and other major household devices. The impact of your work is visible immediately
Develop applications that process large volumes of data quickly and efficiently
Requirements
What do you bring?
Experience developing (cloud) web applications, preferably also mobile applications
At least 5 years of experience with backend development in C#
Experience with low-code development (OutSystems is a plus) or the willingness to learn this technology
Knowledge of HTML/CSS/JavaScript
Experience building robust, testable software
Knowledge of technical design and architecture
Interest in smart home batteries and other devices and their role in sustainable energy solutions
Strong problem-solving and analytical skills
A motivated mindset: you enjoy taking responsibility and can work both independently and as part of a team
You feel at home in a dynamic start-up environment
What do we offer?
Join a young, dynamic and experienced team where your ideas matter
Competitive salary
Pension plan: 1% employer contribution with DoenPensioen + optional personal contribution
Travel allowance (>10km): OV Business Card or mileage reimbursement, depending on your commute
25 vacation days (based on full-time employment)
Bucketlist Day: one extra day off per year to fulfill a dream
Working abroad: up to 20 workdays a year from anywhere in the world
Free lunch: fresh and delicious every day in our cozy canteen
Sports membership: free classes via Urban Sports Club
Corporate Benefits: discounts on a wide range of brands and activities
Fun & connection: monthly drinks and awesome team events
Referral bonus: refer a great colleague and earn up to €2.000
Ready to make a difference?
Apply now, we’re excited to hear from you!