Mission & Vision 

Sioux wants to contribute to a safe, healthy and sustainable world through technological innovation. We aim for growth for our employees, our company and our customers. Sioux creates success and adds value by learning, sharing, interacting, having fun and working on innovative solutions based on transparency and trust.

Sioux supports high-tech customers in developing and building smart modules and software with impact. We add value by way of our strong focus on quality, functionality, reducing development times, integrity and scalability. In doing so, we achieve sustainable competitive advantages for our customers at optimal prices.

We believe in flexible and learning organisations, long-term relationships and the strength of cooperation within a system of open innovation. We operate as our clients’ development and production departments or as an extension of their in-house departments. We take responsibility for turnkey projects from the conceptual phase up to and including series production.

Sioux is experienced with various collaborative models, but distinguishes itself with its entrepreneurship. We dare to take financial risks in developing promising knowledge and innovative products for our customers. Moreover, we invest in start-ups and the development of new companies that are required for enriching and future-proofing the high-tech ecosystem in which Sioux operates.

Our strength lies in our committed and motivated employees. Sioux’s engineers are part of the international top. Their personal development and the continuous enrichment of their knowledge and skills lie at the core of our success and that of our customers. The Sioux company culture is characterised by a sincere interest in people and a collective drive to get the best results every time.


On the 1st of May, 1996, a special story about entrepreneurship and ambition started at Brainport. Hans Duisters and Erik van Rijswijk founded Sioux on that day, which has grown to become one of the most significant, innovative and successful multidisciplinary technology partners for high-quality high-tech OEMs in two decades.

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Sioux services a variety of high-tech markets from various business units, controlled by an experienced Board of Directors and Supervisory Board.


Sioux has 15 branches in seven countries. In total, we work with around six hundred highly skilled engineers on innovative solutions for international high-tech companies.

ISO Certification

Sioux is ISO 9001:2015 and ISO 13485:2016 certified for the development and production of software, electronics and mechatronics.


  • Consultancy
  • Projects
  • Programs
  • Investments in forms such as amortisation, revenue sharing, participations and licenses.