Senior Dotnet Developer

Senior C# .NET Developer (Contract)

Remote London (1 day per week in office)

£475 per day

Outside IR35

A well-established and highly specialised organisation operating within the infrastructure and environmental services sector is seeking an experienced Senior C# .NET Developer to join their team on a contract basis. This role will focus on enhancing and maintaining a suite of critical internal systems that support core business operations.

The Rol

eYou will be working as a senior product engineer within a fast-paced, delivery-focused environment, contributing to the ongoing development of a business-critical platform. A key area of responsibility will be the integration layer, where you will design, build, and optimise APIs that enable seamless communication between internal and external systems

.This position requires a proactive, solution-oriented developer who is comfortable taking ownership of technical challenges and delivering high-quality solutions with minimal supervision. You will play an instrumental role in improving system scalability, performance, and reliability

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Key Responsibiliti**

• esDesign, develop, and maintain robust backend services using C#, .NET, and .NET Co
• reBuild and enhance RESTful APIs and integration services to support data exchange across multiple platfor
• msWork extensively with SQL Server, including writing and optimising stored procedur
• esCollaborate with cross-functional teams (including product, QA, and operations) within an Agile/Scrum environme
• ntParticipate in sprint planning, stand-ups, and retrospectives to deliver increments of high-quality softwa
• reTroubleshoot and resolve complex technical issues, ensuring system stability and performan
• ceContribute to architectural decisions and best practices across the development lifecyc

leKey Skills & Experien

• ceStrong experience with C# and the .NET ecosystem (including .NET Core / .NET 6
• +)Proven track record of building and consuming APIs and integration servic
• esSolid understanding of relational databases, particularly Microsoft SQL Serv
• erExperience working with stored procedures, query optimisation, and data modelli
• ngAbility to work independently take on problems and quickly build and deliver solutio
• nsBeing solutions orientated is a mu
• stExcellent communication skill

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