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Senior C# Backend Engineer
Harnham - Data & Analytics Recruitment
IR35 not stated
- Day rate
- £550–£650/day
- Location
- LondonHybrid, 2 office days a week
- Contract length
- Not stated
View original advert (opens in a new tab)Calculate take-home
Take-home a year, roughly
- Outside IR35
- £79,586
- Inside IR35
- £74,331
At £600 a day for 220 days, 2026/27 tax rates.
About this contract
Senior C# backend engineer building identity and authorisation platform services. Design OAuth2, JWT, OIDC systems; develop microservices, SDKs, and integrations with Kubernetes and API Gateway. Strong distributed systems knowledge required. London hybrid, 2 days onsite weekly.
Key details
- Security clearance
- None stated
- Company
- Technology-led organisation investing in next-generation platform
- Sector
- Technology
- Posted
- 18 days ago
Skills
- C#: see other contracts
- OAuth 2.0 / OIDC: see other contracts
- Identity and access management (IAM): see other contracts
- Microservices: see other contracts
- Distributed systems: see other contracts
- REST APIs: see other contracts
- .NET: see other contracts
- Performance testing: see other contracts
- Kubernetes: see other contracts
- Cloud native: see other contracts
Where it's advertised
Apply through the original advert. IR35 status is as stated there: always confirm it with the hirer.
- View advert from Harnham - Data & Analytics Recruitment (opens in a new tab)Harnham - Data & Analytics RecruitmentReed · Posted 18 days ago
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