C# Developer

We work with C# Developers to build secure, scalable and high-performance backend systems across a range of industries. This role typically requires a Bachelor’s degree in Computer Science or a related field, along with experience delivering production-ready applications using the .NET ecosystem.

Design and develop backend services and APIs using C# and .NET (6 and above)

Build scalable, secure solutions for web and, where applicable, desktop applications

Collaborate with front-end developers, QA engineers and DevOps teams to deliver complete solutions

Write clean, maintainable code that follows SOLID principles and modern best practices

Work with databases such as SQL Server or PostgreSQL using Entity Framework or Dapper

Write unit and integration tests to ensure software reliability and maintainability

Improve existing systems through refactoring, performance optimisation and automation

2 or more years of experience in C# and .NET development

Strong understanding of object-oriented programming and software design principles

Proficiency with ASP.NET Core, RESTful API development and MVC architecture

Experience working with relational databases and ORMs such as Entity Framework

Familiarity with version control systems like Git, CI/CD pipelines and deployment workflows

Strong problem-solving skills and the ability to debug effectively across systems

As a C# Developer at Monkey and River, you’ll join a backend-focused team that values clean architecture, performance and long-term maintainability. You’ll work alongside front-end developers, designers and QA engineers to build reliable systems that scale, integrate cleanly and deliver value across industries.

Become a part of our Talent Network by sending us your CV.

We’ll keep your details safe and get in touch if a matching role becomes available.

Are you ready to use your expertise and make a difference?

Join our Talent Network and we’ll get in touch

Angular sits at the core of many of our products. This role combines technical depth with hands-on problem solving and collaboration....

Backend complexity, handled cleanly. This role is about building well-structured services in Java that can evolve, scale and stand up to real-world usage....

Build fast, scalable backend systems that handle real users and real load. If you’re confident with Node.js and thrive on solving backend challenges, this...

You’re officially booked to donate blood on:

Monkey and River Offices, Eco Park, Centurion

If you have any further questions, feel free to call us on [staat bij de werkgever] or email us at [staat bij de werkgever]

You’re officially booked to donate blood on:

Monkey and River Offices, Eco Park, Centurion

If you have any further questions, feel free to call us on [staat bij de werkgever] or email us at [staat bij de werkgever]

Please complete the form below to register for the Hackathon .

You can enter as a team or find a team at the hackathon.

Have you participated in a hackathon before?

Please complete the form below to register for the Blood Drive happening on Wednesday, 9 July 2025 , at Monkey and River Offices, Eco Park, Centurion .

This helps us plan ahead. You’re not booking a specific time — just letting us know when you’re likely to arrive.

After submitting, you’ll receive a confirmation email with more information about the Blood Drive.

By clicking Send, you agree to our Terms of Use and

Thank you for applying to the Monkey and River x Momentum Life Insurance Hackathon 2025!

We’ll review your application and will be in touch.