Sagé Maenen
Talent acquisition
+31 (0)6 515 79 480
+31 (0)6 515 79 480
At Sioux Technologies Apeldoorn, it’s all about solving complex puzzles with smart software. No web apps or cloud-based tools — but high-performance software for high tech machines or devices. Using C# and sometimes other languages like C++, Python or Java, you’ll develop locally running software that forms the backbone of cutting-edge high-tech systems.
Sioux Technologies 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.
Our Position
You’ll work on application and control software for high-tech machines in industries like semiconductors, medical, or analytical equipment. Machine control to UI tooling and from data pipelines to synchronization logic — you’ll help design and build systems from the ground up.
How your daily challenge can be described:
- Develop high-performance software using C# within the .NET framework
- Take ownership of architecture, design, test strategy and versioning
- Collaborate in tight-knit development teams at our Apeldoorn office or on-site with clients
- Contribute to code quality through reviews, refactoring and CI/CD
- Coach junior engineers and help shape our knowledge-driven culture
Spotlight project – Integrated test automation framework
For a client in the analytical market, we developed a hybrid software system that integrates device control, automated test sequences, and real-time validation. The orchestration layer and UI were implemented in C#, the hardware interface layer in C++, and the test scenario scripting in Python — offering the flexibility needed for continuous experimentation. Everything runs locally, ensuring low latency and high reliability, key in cleanroom environments.
Your future workplace
Your Experience
- A bachelor’s or master’s degree in Computer Science or Software Engineering
- 5+ years of experience in technical software development
- Solid knowledge of C# and the .NET platform
- Knowledge of other languages like C++, Python or Java
- Experience with design patterns, system architecture, and agile environments
- Familiarity with Agile/Scrum, CI/CD environments
- Fluent in Dutch and English
Why Sioux Apeldoorn?
- Software-only focus: Apeldoorn is Sioux's software powerhouse. No hardware distractions — just technical software challenges.
- Quality mindset: Clean architecture, peer reviews, test coverage and software craftsmanship are not slogans — they’re how we work.
- Freedom & trust: Choose your tech stack, suggest improvements, shape your role. We’ll back you.
Our Culture
At Sioux Technologies in Apeldoorn, We organize numerous activities for our employees, such as summer barbecues, innovative knowledge sessions, and enjoyable lunches or drinks. Additionally, we offer an inspiring working environment where you can work with dedicated professionals on challenging high-tech projects.
At Sioux Technologies, you work alongside the best technicians who, like you, are driven by a shared passion for technology. We offer:
- Internal training, coaching, and a large development budget of €6,000 per year
- A vitality budget for personal wellness activities
- Varied work due to a variety of technologies, markets, and projects
- A good salary and attractive fringe benefits
- Flexible working hours of 32-40 hours per week, both at home and in the office
- An open culture focused on collaboration, learning, and having fun
At Sioux, we believe in the combination of high-tech innovation, fun, and value creation. We can tell you all about our unique culture and the challenging high-tech projects, but we prefer to let our employees speak for themselves. Discover why they chose Sioux and how they develop here. Go to the testimonials of Thijs , Ronald and Ali to find out why they chose Sioux.