Senior .NET Developer (Contract)
At a Glance
• Senior .NET Developer, 12 month contract, outside IR35
• £450 per day, immediate start available
• Based in Belfast, 90% remote working
• Enterprise-scale platform build using C#, .NET Core and Azure
• Genuine autonomy on a high-visibility, technically demanding programme
About the Company
Our client is a large, established organisation delivering critical digital platforms at enterprise scale. They operate across multiple regions and support a substantial user base, with a technology function that is investing heavily in modernising its core systems. The engineering culture is collaborative and delivery-focused, with a strong track record of retaining contractors on long-term engagements.
The Role
This is a senior-level contract role for an experienced .NET developer to join a team working on enterprise-scale platforms. You will work alongside senior engineers, architects and product owners to deliver robust, scalable solutions on a 12 month engagement. The role suits someone comfortable operating with minimal oversight, able to make sound technical decisions and confident contributing to architecture as well as hands-on delivery.
Key Responsibilities
• Design and build scalable backend services using C# and .NET Core
• Lead technical delivery on key components of the enterprise platform
• Collaborate with architects to shape solution design and technical direction
• Own code quality through testing, code review and sound engineering practice
• Build and maintain cloud-native services deployed on Azure
• Troubleshoot and resolve complex production issues across the platform
• Mentor less experienced developers within the team
• Work closely with product owners to translate requirements into technical solutions
What You'll Need
Essential:
• 5+ years' experience developing with C# and .NET Core
• Proven experience delivering enterprise-scale platforms or systems
• Strong experience with Azure cloud services
• Solid grasp of RESTful API design and microservices architecture
• Right to work in the UK, based in or able to travel to Belfast for on-site days
• Available for an immediate start
Desirable / Nice to Have:
• Experience with event-driven or message-based architectures (e.g. Service Bus, Kafka)
• Exposure to Azure DevOps and CI/CD pipeline management
Why Apply?
• £450 per day, outside IR35
• 12 month contract with strong likelihood of extension
• 90% remote working, with only occasional time on-site in Belfast
• Immediate start available
• Work on a genuinely enterprise-scale platform with real technical challenge
• Collaborative, senior engineering team with autonomy to make technical decisions
Next Steps
If this sounds like your next contract, get in touch with Aaron Somers at aaron@ochopeople.com or connect on LinkedIn to find out more.
