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# Senior Software Developer - C# / .NET / SQL

- **Company:** Jigsaw M2M
- **Location:** Clayton-le-Woods, UK
- **Experience:** Expert
- **Salary:** £55,000.0 - £65,000.0
- **Contract:** Permanent contract
- **Skills:** ASP.NET, JavaScript (Programming Language), .NET Framework, Microsoft Excel, Application Programming Interfaces (APIs), Artificial Intelligence, Data Analysis, Computing Platforms, User Authentication, Microsoft Azure, C Sharp (Programming Language), Databases, Crystal Reports (Reporting Software), Software Debugging, JSON, Machine Learning, Microsoft SQL Server, Commercial Software, Software Architecture, Proprietary Software, Power BI, Software Engineering, SQL Stored Procedures, SQL Databases, SQL Server Reporting Services, Systems Integration, Web Services, Extensible Markup Language (XML), Software Security, Database Performance, Git, Data Analytics, Restful APIs, Custom Reports
- **Published:** October 22, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=b59bf6a15e282b9b

## About the Role

· At least 5 years' commercial experience as a software developer.

· Strong experience with C#.

· Strong experience within the .NET environment.

· Very good knowledge of Microsoft SQL Server.

· Experience writing and optimising SQL queries and stored procedures.

· Experience developing database-driven applications.

· Experience developing or integrating REST APIs and web services.

· Experience working on established commercial software systems.

· Good understanding of software architecture and application design.

· Strong debugging and problem-solving skills.

· Ability to work independently and take ownership of development tasks.

Reporting Experience

Experience of producing business reports from SQL-based systems is particularly important.

This may include experience with technologies such as:

· SQL Server Reporting Services (SSRS)

· Crystal Reports

· Power BI

· RDLC

· PDF and Excel report generation

· Custom reporting within .NET applications

· Scheduled and automated reporting

Experience with one or more of these would be highly desirable.

Desirable Experience

Experience in any of the following would be advantageous:

· ASP.NET / ASP.NET Core

· JavaScript and web front-end technologies

· Azure

· Authentication and user-management systems

· IoT or telemetry applications

· Time-series or high-volume data

· Data analytics

· AI or machine-learning integration

· ERP or billing-system integration

· JSON / XML data exchange

· Git or other source-control systems

Previous experience within the fuel, logistics, telemetry or industrial sectors is useful but not essential.

## Description

We're looking for a talented, hands on developer who enjoys solving technical challenges, takes pride in producing quality software and wants to see their work make a real world impact.

Working primarily with C#, .NET and Microsoft SQL Server, you'll develop and enhance the software platforms that power our fuel management and telemetry solutions.

You'll work across web services, APIs, reporting systems and customer facing applications, improving existing systems while contributing to exciting new product developments.

This is an opportunity to join our small but experienced team where your ideas are valued, your contribution is recognised and you'll have a genuine influence on the technology we develop., · Develop and maintain applications using C# and the .NET environment.

· Design, develop and optimise Microsoft SQL Server databases.

· Develop and maintain REST APIs and web services.

· Work with large volumes of operational and telemetry data.

· Develop customer reports, dashboards and data exports.

· Build and maintain report-generation functionality.

· Integrate Jigsaw systems with customer ERP, billing and third-party software.

· Improve database performance, reliability and scalability.

· Support new hardware and telemetry products through software integration.

· Contribute to future projects involving analytics, AI and automated monitoring.

· Maintain appropriate testing, documentation and software security standards.

· Diagnose and resolve issues within existing systems.