Company: Addition
Location:
Job Description:
Addition, located in Hertfordshire, United Kingdom, is seeking a Senior .NET Developer to take ownership of their B2B customer portal. You will manage back-end services and system integrations, while collaborating in an agile environment.
The ideal candidate will have strong experience with C# and .NET, API architecture, and SQL Server, along with a passion for modernisation and AI tooling adoption. Addition offers competitive salaries, enhanced benefits, and a culture focused on continuous learning.
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Posted: June 25th, 2026