IT Jobs

C# Backend Senior Engineer (London-based)

Itransition • West London, London

Salary

£91k – £91k

Posted

29 September 2026

Sponsor match

high

Skilled WorkerWorker (A rating)

Role overview

Itransition is hiring a C# Backend Senior Engineer (London-based) in West London, a it role. The advertised salary is £91k – £91k. Itransition holds an active licence on the UK Home Office register of sponsors for the Skilled Worker route, which means it can sponsor a visa for this hire if it chooses to.

We are looking for a C# backend engineer to join the Authorization team. In this role, you will work on creating the Identity & Authorization Platform. You will build the authorization platform used across all products: SDKs, Policy APIs, authorization microservices, and identity services. Requirements: 5 years of experience with C#/.Net REST APIs Microservices architecture OAuth2, JWT, OIDC Graph modeling Distributed systems Understanding of RBAC, ReBAC, ACL, and policy evaluation is a plus Ni…

Apply on Adzuna ← More roles

Before you apply

Applying for this sponsor role?

Get your CV, cover letter, or full sponsor-job application pack prepared before you apply — or let our dedicated application team apply for suitable roles on your behalf.

Tailor my CV Apply for me

Visa sponsorship snapshot

Employer: Itransition — confirmed licensed sponsor
Visa route: Skilled Worker
Advertised salary: £91k – £91k
How this salary compares: about 60% above the £57,000 median across 1,245 it roles with published salaries on FindSponsorJobs
Location: West London, London
Similar roles nearby: 1 other live it role in West London — browse them
Posted: 29 September 2026
How we verify sponsors: employers are matched against the UK Home Office register of licensed sponsors — read our methodology.

About this sector

IT and technology roles are one of the most consistently sponsored categories in the UK. Software engineers, data scientists, cloud architects, DevOps specialists, and cybersecurity professionals are in demand across finance, retail, the public sector, and specialist tech firms. Many large IT employers maintain established sponsorship processes through their HR and talent teams.