Technical Software Engineer C#.Net

Full time, Part-time
Bachelor, Master
Are you a software engineer looking for a position where you can combine technology with professional services? Do you like to get the best out of yourself and others? Do you prefer to work in an informal environment, where helping to build the company means building yourself? Which you can. As a Technical Software Engineer C#/.Net at Sioux Technology in Apeldoorn.

Sioux Technology brings high-tech to life and contributes to a society that is healthier, safer, smarter, more sustainable and more enjoyable. We are a strategic high-tech solutions partner that develops, innovates and assembles complex high-tech systems with advanced Software, Mathware, Electronics and Mechatronics.

As one of the largest private tech companies in the Netherlands, we are focused on people and building long-term relationships. We continuously develop our employees. In this way we create more fun & value for our employees, our inter (national) customers, Sioux and the world around us.

Our Position

As a technical Software Engineer C#/.Net you work on applications within high tech machine and equipment construction. The projects focus on different domains such as medical, semiconductor, automotive or agriculture. You work together with software colleagues, and you are part of a multidisciplinary team. Where passion for technology and fun are paramount. The projects are carried out at our Sioux Development Center in Apeldoorn or at the client's location.

The following appeals to you:

  • Continue to develop yourself through training and challenging projects.
  • A technical environment with colleagues from whom you can learn and with whom you can share your knowledge.
  • Working in varied domains.
  • Thinking and making decisions about technical choices and tools to achieve the best end result.
  • A pleasant and people-oriented working atmosphere.

Our employees are of course the best source if you want to know what it's like to work at Sioux.
Read in their own story why Thijs , Ronald and Ali choose Sioux.

Where could your next project be?

1): Catharina Hospital: Catharina is an ambitious, top clinical hospital in Eindhoven. Their health professionals are dedicated to provide the best possible care to patients every day. Besides basic care they provide top clinical care in several fields: heart and vascular diseases, overweight, kidney failure and oncology (radiotherapy).

2): Technobis Crystallization Systems: is a world leading technology provider for solid-state research, process development and formulation. Its mission is to make researchers all over the world more successful by providing smart and fast solutions, based on unique technology, knowledge and expertise.

3): BE Semiconductor Industries (Besi): is a Dutch multinational company that manufactures semiconductor assembly equipment. Typical customers of Besi are multinational chip manufacturers and independent device manufacturers.

Your future workplace

Your Experience

  • You have at least two years of practical experience with C# software development and the .NET ( core ) Framework.
  • Knowledge of WPF development is an advantage.
  • Experience working in Agile Scrum teams is an advantage.
  • You have completed a technical education at HBO or WO level, preferably technical computer science, Embedded Systems or Electrical Engineering.
  • You have an inquisitive attitude, enjoy keeping up with new developments in your field and feel at home in an organization that supports you in this.

Our Culture

Our employees are our strength, and we want to get the most out of our collaboration together. We therefore invest a lot in our employees, by means of generous development budgets and personal attention. According to our employees at Sioux, that is precisely what makes the difference. And we are proud of it. For us, success is more than a good salary: it is also about being valued, being given responsibility, and continuing to develop yourself.
  • Internal training, coaching and a generous development budget of 6,000 euros per year.
  • Varied work due to variety in technologies, markets and projects.
  • Good salary and attractive fringe benefits.
  • Flexible working hours of 32-40 hours per week in a healthy combination of home and office.
  • An open culture focused on collaboration, learning and having fun.
  • An innovative work environment.
  • A pizza budget, so you can work on innovative new developments in our expertise groups.
More than 60% of our engineers are members of one or more expertise groups, where they work together on innovative study projects such as applications for SoC technology ( Zynq ), embedded controllers with FPGA, Project Management, Oculus Rift and much more. Sioux sponsors the hardware and the food for thought. We call this the Sioux Pizza Budget because pizza is the most popular food choice at these gatherings.
Are you interested?

Your new job in 5 steps

Thank you for your interest. We are happy to share our selection process with you. Below you will find the steps we go through. If you have any questions, feel free to contact us. We wish you the best of luck with your application at Sioux Technologies!

  • Interested?
    • Send us your CV and motivation letter.
  • Application received
    • One of our recruiters will review your application and get back to you asap.
  • Introduction
    • We will plan an (online) introduction with a Sioux colleague to find out if there is a match.
  • Follow-up conversation(s)
    • In follow-up conversation(s), we dive into the (technical) depth. In some cases a personality test will be part of the conversation and will be discussed with you. In other cases you will be presented with a (technical) case.
  • Both excited?
    • If we are both enthusiastic, we would like to make you an offer. We will talk you through the offer and discuss it with you. Are you already curious about our terms of employment? You can find them here for the Netherlands, Belgium, Germany.
  • Welcome to Sioux Technologies!
    • We welcome you to Sioux and wish you success with your new challenge!


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  1. Pre-employment screening and background checks might be part of your application procedure.
  2. Your personal information is managed in compliance with the GDPR regulations.

Sagé Maenen

Talent acquisition
+31 (0)6 515 79 480
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