C# Software Engineer — Hybrid Role in Rotterdam

ALTEN; Rotterdam; Hybrid; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Lease car with fuel card

Hybrid working

Monthly net expense allowance

27 vacation days with purchase option

Pension scheme

Job summary

ALTEN is seeking a skilled C# Software Engineer to join our Rotterdam team on a hybrid basis. You will contribute to high-tech client projects across multiple industries, delivering robust .NET applications and collaborating with cross-functional teams.

The role emphasizes modern software development practices, clean architecture, and code quality. You may also apply your C++ knowledge for performance-critical modules while expanding your expertise through continuous learning.

Qualifications

• Bachelor’s or Master’s degree in CS/Software Engineering.
• 3+ years of professional C# / .NET development experience (Medior to Senior).
• Strong OO design, patterns, and software architecture knowledge.
• Proficient English, both written and spoken.
• C++ knowledge is a strong plus.

Responsibilities

• Design, develop, and maintain high-quality applications using C# and .NET.
• Translate specifications into robust, scalable code.
• Troubleshoot and resolve complex technical challenges.
• Ensure code quality via unit testing and reviews.
• Collaborate with cross-functional teams; hybrid work allowed.
• Leverage C++ for performance-critical modules when needed.

Skills

C# / .NET

C++

Software architecture

Object-oriented programming

English proficiency

Education

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

Tools

Visual Studio

NET tooling

Job description

ALTEN is seeking a skilled C# Software Engineer to join our Rotterdam team on a hybrid basis. You will contribute to high-tech client projects across multiple industries, delivering robust .NET applications and collaborating with cross-functional teams.

The role emphasizes modern software development practices, clean architecture, and code quality. You may also apply your C++ knowledge for performance-critical modules while expanding your expertise through continuous learning.