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# Senior Applications Support Developer

- **Company:** Robert Walters
- **Location:** United Kingdom (Remote available)
- **Experience:** Expert
- **Salary:** £42,000 - £47,665
- **Contract:** Temporary contract
- **Skills:** .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, Microsoft Azure, C Sharp (Programming Language), Cloud Computing, Extract Transform Load (ETL), Relational Databases, Microsoft SQL Server, Release Management, Power BI, Microsoft SharePoint, Software Engineering, SQL Server Integration Services, SQL Server Analysis Services, Systems Integration, Software Version Control, Legacy Systems
- **Published:** November 11, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5960455100

## About the Role

We're looking for someone with a strong background in application development and support, ideally including:

 * C# / .NET / SQL Server development experience.
 * Experience supporting and maintaining legacy or bespoke applications.
 * Strong knowledge of APIs, integrations and relational databases.
 * Experience with application troubleshooting, maintenance and enhancements.
 * Understanding of Agile development, source control and release management.
 * Excellent problem-solving, communication and stakeholder management skills.
 * Ability to quickly understand unfamiliar applications and technologies.

## Description

* Develop, maintain and enhance business-critical applications using C#, .NET and SQL Server.
 * Support legacy applications, including upgrades, migrations and modernisation.
 * Design and maintain APIs, system integrations and automated data processes.
 * Investigate and resolve complex application issues, providing technical support and root-cause analysis.
 * Take ownership of applications throughout their lifecycle, ensuring reliability, security and performance.
 * Work closely with internal stakeholders, suppliers and technical teams to deliver improvements.
 * Support releases, testing, documentation and knowledge transfer., * SSIS, SSAS or ETL processes.
 * Power BI, Power Platform or SharePoint.
 * Azure or other cloud technologies.
 * ITIL or structured IT service management environments.

You don't need experience with every technology listed. We're particularly interested in developers who are adaptable, technically capable and comfortable working across a mixture of modern and legacy systems.

Why Consider This Opportunity?

 * Excellent flexibility, with full-time, part-time and remote working arrangements considered.
 * Opportunity to work across a diverse range of applications and technologies.
 * A varied role combining development, support, integrations and modernisation.
 * Join a collaborative, small technical team where your expertise will make a genuine impact.
 * Work on meaningful technology projects supporting essential public services.