Job Description
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
.
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