⏰ Contract

Senior Full Stack Developer to develop and enhance web-based applications for a large public sector client.

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S.i. Systems

                    Location
                    📍 London, United Kingdom
                

                    Posted
                    📅 June 09, 2026
                

                    Work Type
                    ⏰ Contract
                

Position Overview

Our client is looking for a Senior Software Developer (C#.net/JavaScript(react)) to work on the development and enhancement of web-based applications.
**The successful candidate will need to obtain or hold an enhanced reliability clearance (requires 5+ years in Canada)**
Must Haves:
8+ years' experience as a Software Developer (Back-end, Front-end or full stack)
C#.Net Development experience including .net/asp.net/MVC
Javascript (react) experience 
Experience developing Web APIs
MS SQL Server experience 
Nice to have:
Azure B2C integration experience

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Job Details

⏰

Employment Type

Contract

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