Contract .NET Developers (x3) Belfast based team, remote within Northern Ireland Inside IR35 | Up to £550 per day | Start date: Feb/March 2026 We are partnering with a distinguished Ocho client to bring on three experienced .NET developers to support a major payments platform initiative. This is a hands-on engineering role focused on building, enhancing and stabilising a high-volume, business-critical transaction environment. You'll work closely with product, cloud and architecture teams to deliver clean, modern and secure services. The work will span new feature development, API design, integrations, performance tuning and platform optimisation. The environment is fast moving, delivery focused and suits engineers who enjoy ownership and clear technical outcomes. Required experience Strong commercial experience with .NET and C#. Solid understanding of RESTful services, microservices and API development. Experience working in Azure or another major cloud environment. Good grasp of SQL Server, performance optimisation and data-driven applications. Exposure to payments, fintech or similarly regulated domains is beneficial. Ability to work independently while collaborating closely with a distributed team. Clear communication skills and a pragmatic delivery mindset. Why this role Work on a high-impact payments platform with a respected Northern Ireland engineering team. Fast moving environment with clear technical problems to solve. Fully remote within NI with a Belfast-based organisation behind it. Apply here or reach out to Aaron Somers at Ocho for more information via LinkedIn.