Software Designer (C#/C++/Java) - Remote & Flexible

Sioux; Utrecht; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Flex 32-40 hour week

28 holidays + 12 extra

€6000 training budget

Team events & social activities

Prime office near Veluwe

Job summary

Sioux is looking for a Software Designer to develop high-tech software systems in C#, C++, and Java. You will translate requirements into robust designs, mentor engineers, and guide teams to deliver scalable solutions.

From our Mijdrecht office and client sites, you’ll work on challenging projects across semiconductor, analytical instrumentation, and medical equipment domains, with opportunities to travel within the Netherlands.

Qualifications

• Bachelor’s or Master’s in CS/Software Eng/CE.
• 7+ years of technical software development experience across diverse product environments.
• Last 4–5 years in domains like Semicon, Medical, or Analytical.
• Experience in two of C#, C++, Java.
• Familiarity with Design Patterns, UML, and Agile methodologies.
• Ability to coach junior engineers.
• Team player with strong Dutch and English communication.
• Holder of a valid EU driving license and willingness to travel.

Responsibilities

• Translate customer and system requirements into innovative software concepts.
• Bridge between architects and engineers from a technical perspective.
• Own a module or subsystem through the full software lifecycle.
• Ensure software quality, scalability, and maintainability.

Skills

C#

C++

Java

Design Patterns

UML

Agile

Mentoring

Team player

Dutch & English

Education

Bachelor’s or Master’s in Computer Science/Software Engineering/Computer Engineering

Tools

Git

Job description

Sioux is looking for a Software Designer to develop high-tech software systems in C#, C++, and Java. You will translate requirements into robust designs, mentor engineers, and guide teams to deliver scalable solutions.

From our Mijdrecht office and client sites, you’ll work on challenging projects across semiconductor, analytical instrumentation, and medical equipment domains, with opportunities to travel within the Netherlands.