Senior Developer

Salary: £30,000 - 55,000 per year

Requirements:

• Strong experience in software development using Microsoft technologies, including C#, .NET, and SQL Server.
• Experience with the full Microsoft development stack, including WPF and Windows Forms.
• Experience with server integrations such as OData, WCF, and REST APIs.
• Solid understanding of the full development lifecycle, including support and continuous improvement.
• Proven expertise in SQL Server, including performance tuning, database design, and query optimisation.
• Experience with integrations, APIs, middleware, and data flows such as ETL, transformation, and mapping.
• Ability to troubleshoot complex system and data issues across interconnected platforms.

Responsibilities:

• Develop, maintain, and enhance business applications, integrations, and internal systems, ensuring solutions are scalable, reliable, and user-focused.
• Work closely with stakeholders to understand requirements, provide technical guidance, and deliver pragmatic solutions aligned to business needs.
• Support and improve existing systems by troubleshooting issues, optimising performance, and enhancing usability and stability.
• Design and deliver system integrations, including APIs, middleware, and data exchange, ensuring robustness, security, and effective data flow between platforms.
• Take ownership of database performance, including schema design, query optimisation, indexing strategies, and data integrity.
• Manage and support data processes such as imports, exports, transformation, and reconciliation across multiple systems.
• Contribute across the full development lifecycle, including design, development, testing, deployment, and ongoing support.
• Support release management, version control, and deployment processes to ensure controlled and stable system changes.
• Collaborate with internal teams and third-party suppliers to ensure systems and integrations operate effectively.
• Contribute to continuous improvement by modernising legacy systems and adopting best practice development approaches.
• Explore and implement opportunities to leverage AI and automation technologies to improve system efficiency, data usage, and business processes, ensuring solutions are practical, secure, and aligned with business needs.

Technologies:

• AI
• C#
• ETL
• Flow
• Support
• REST
• SQL
• Security
• WPF
• Windows
• Windows Forms
• ASP.NET

More:

We are hiring a Senior Developer for our Business Systems team in Cheltenham on a hybrid basis, with a salary of £65k. This is a hands-on and varied role where we support, maintain, and evolve our core business systems and integrations. We work closely with stakeholders across the business to deliver reliable, scalable solutions that improve user experience, support day-to-day operations, and enable business growth. The role combines development, database optimisation, systems integration, and continuous improvement, with opportunities to modernise legacy platforms and explore practical uses for AI and automation.

last updated 31 week of 2026