Software Developer (.NET / Thinkwise / SQL)

An international organisation is seeking a freelance Software Developer to enhance and optimise business-critical applications using .NET, SQL Server, and the Thinkwise platform. The assignment focuses on delivering scalable solutions, improving integrations, and supporting operational efficiency through application development and process automation.

About Our Client: Our client is an international organisation operating in a fast-paced environment where technology is central to supporting operational, logistical, and commercial processes.

Job Description: Deliver application enhancements and new functionality using C# and .NET technologies. Develop and optimise solutions within the Thinkwise low-code platform. Design, improve, and maintain SQL Server databases, stored procedures, and queries. Implement reliable integrations between internal and external systems. Translate business requirements into scalable technical solutions. Resolve application issues and improve platform stability and performance.

Deliver automation initiatives that support operational efficiency. Produce testing, deployment, and technical documentation to support knowledge transfer.

The Successful Applicant: Several years of experience as a Software Developer. Strong expertise in C#, .NET Framework, and/or .NET Core. Extensive experience with Microsoft SQL Server and complex SQL development. Proven hands-on experience with the Thinkwise platform. Experience with API integrations and connecting business-critical systems. Able to communicate in Dutch. What's on Offer: Start date ASAP, Hours 24-32 hours (3 or 4 days), Location Netherlands, Zuid Holland.