C# engineer

C# Software Engineer – Rotterdam – ALTEN Netherlands

The Position

As part of our expanding team, we are looking for a talented C# Software Engineer to join us in Rotterdam and contribute to impactful, high-tech client projects across a variety of industries.

As a C# Engineer, your main tasks will include:

• Designing, developing, and maintaining high-quality software applications using C# and the .NET ecosystem
• Translating technical specifications into robust, scalable, and efficient code
• Identifying, troubleshooting, and resolving complex technical challenges with innovative solutions
• Ensuring code quality through unit testing, code reviews, and adherence to best engineering practices
• Collaborating with cross-functional teams to deliver reliable and performant end-to-end solutions
• (Optional but valued) Applying your C++ knowledge in projects where native integration or performance-critical modules are involved

Your Profile

• Bachelor’s or Master’s degree (HBO/WO) in Computer Science, Software Engineering, or a related discipline
• 3+ years of professional experience in C#/.NET software development (Medior to Senior level)
• Solid understanding of object-oriented programming, design patterns, and software architecture principles
• Experience with modern .NET frameworks, tooling, and development workflows
• C++ knowledge is a strong plus
• Strong analytical and problem-solving abilities
• Excellent communication skills for effective collaboration with colleagues and clients
• Proactive mindset with eagerness to learn, improve, and explore new technologies
• Fluent in English (spoken and written)

Working Conditions

• Lease car with fuel card
• Possibility of hybrid working
• Monthly net expense allowance
• 27 vacation days, with the option to purchase up to 10 extra vacation days
• Pension scheme with no personal contribution required

Why Join Us?

• Exciting Projects Across Industries : Contribute to innovative solutions in automotive, high-tech, transport, defence, and telecom sectors
• Diverse Client Portfolio : Work with both global leaders and emerging innovators
• Career Development : Access to continuous training, mentorship, and opportunities to attend leading industry events
• Collaborative Culture : Join a team-oriented environment that values innovation, knowledge-sharing, and personal growth

About ALTEN

ALTEN is a global leader in engineering and technology consulting, supporting top-tier clients in their innovation and R&D strategies. With over 57,000 employees across 30+ countries, we operate in sectors such as aerospace, automotive, telecom, finance, energy, and life sciences.

ALTEN Nederland is a key entity within the ALTEN Group, with offices in Eindhoven, Capelle aan den IJssel, Apeldoorn, Groningen, and Amstelveen. Our 550+ consultants deliver high-value Technology and IT solutions. For more than 20 years, we’ve contributed to impactful projects across industries, helping companies drive technological transformation.

Ready for your next challenge?

Apply now and bring your C# expertise to cutting-edge projects at ALTEN Nederland!