Electronics Engineering Company Based in Denmark
At Therkildsen Development, we love embedded systems and combining deep technical insight with practical, hands-on experience to guide projects from initial concept to production-ready solutions. Based in a dynamic entrepreneurial environment in Sønderborg, we work closely with both startups and established companies, helping them transform innovative ideas into real, functional products.
We thrive on projects with technical complexity and unconventional challenges, where attention to detail and a structured approach make all the difference. Whether providing additional capacity for an in-house development team or assisting a startup with its first prototype, we act as a competent and reliable partner throughout the entire process. From concept development and prototyping to production planning and execution, our focus is on delivering quality, reliability, and value every step of the way.
Who are we
Therkildsen Development ApS is a development house focused on innovative product and technology development in electronics and software. Based in a dynamic entrepreneurial environment in Sønderborg, Denmark, we work closely with both established companies and startups to turn ideas into practical, market-ready solutions.
We are passionate about electronics and software development down to the smallest detail, and projects with technical complexity or an unconventional angle are our specialty. Whether you need additional capacity for your internal development team or are a startup working on your first prototype, we act as a competent and reliable partner throughout the entire process — from idea and concept development to prototypes.
We also take projects all the way to fully production-ready products. With extensive experience in turning ideas into functional prototypes and bringing new products into production through trusted suppliers, we ensure quality, reliability, and competitive costs.
Meet the team
The company is founded by Henning Therkildsen, who has more than 30 years of experience in electronics development and production. Founded in 2013, Therkildsen Development today consists of a dedicated team with strong technical expertise.
We approach every project with structure, pragmatism, and a solution-oriented mindset. Our focus is on responsibility, transparency, and long-term collaboration. For us, development is not just about technology — it’s about creating solutions that are practical, reliable, and add real value to our clients.
Experience that creates momentum
Turning ideas into real, producible solutions through structured development and hands-on experience
Let’s talk about your project
If you are unsure who to contact, use the form below and we will follow up with the relevant specialist.
Where to find us
You can locate us at Our Headquarters at Therkildsen Development ApS
Ellegaardvej 36, 6400 Sønderborg
CVR.: 25718437
Bank: Danske Bank 3409-0011372724