C# contracts in London

15 open C# contracts in London, typically £495–£650 a day.

Open contracts: 15
Typical day rate: £495–£650Median £600, from 13 contracts stating a rate
Outside IR35: 33%of the 12 that state a status

At the median £600 a day over 220 working days, you'd take home about £79,586 a year outside IR35, or £74,331 inside IR35. Work out your own take-home pay

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15 contracts found

FX Options Pricing Developer - C++ - Front Office - Contract Inside IR35 - Investigo
Members only for 2 hours
£775–£850/dayInside IR35
London · Posted today
- C#
- C++
C# .NET DeveloperHybrid
Investment banking client
£400–£416/dayInside IR35 (implied)
London · 24 months · Posted 5 days ago
- C#
- .NET
- Object-oriented programming
- SQL Server
- REST APIs
- +1 more
Staff Engineer, Premium Finance IntegrationHybrid
Well-established organisation in a highly regulated sector delivering services across the UK
£550/dayOutside IR35
London · Posted 6 days ago
- C#
- .NET
- SQL
- CI/CD
- DevOps
- +9 more
Microsoft Office Add-In Developer (.NET/C#)
Prestigious London-based law firm
Rate not statedInside IR35
Farringdon · Posted 7 days ago
- C#
- .NET
- Azure
- Azure DevOps
- DevOps
2 adverts
AI Platform EngineerRemote
Local client
£450–£480/dayInside IR35
London · 3 months · Posted 8 days ago
- C#
- Python
- Azure
- SharePoint
- OpenAI / ChatGPT
- +7 more
Staff EngineerHybrid
Well-established organisation operating within a highly regulated financial services sector
£550/dayOutside IR35
London · Posted 8 days ago
- C#
- Migration
- .NET
- SQL
- Financial reporting
- +7 more
Design Developer
Household-name global leader in architecture and interior design software
Rate not statedIR35 not stated
London · Posted 11 days ago
- C#
- Python
- JavaScript
- Revit
Senior Developer Consultant (iPaaS & Automation)Hybrid
Fast-paced transformation programme in secure enterprise environment
£495/dayIR35 not stated
London · 3 months · SC clearance · Posted 13 days ago
- C#
- Azure
- Distributed systems
- Agile
- PowerShell
- +7 more
Senior C# / Azure Engineer
Data & AI consultancy in Wealth Management
£650–£700/dayOutside IR35
London · 3 months · Posted 15 days ago
- C#
- .NET
- Azure
- Event-driven architecture
- REST APIs
- +2 more
Senior DevSecOps EngineerHybrid
Global technology organisation
£550–£700/dayOutside IR35
London · 6 months · Posted 18 days ago
- C#
- DevSecOps
- DevOps
- Terraform
- CI/CD
- +11 more
2 adverts
Senior C# Backend EngineerHybrid
Technology-led organisation investing in next-generation platform
£550–£650/dayIR35 not stated
London · Posted 18 days ago
- C#
- OAuth 2.0 / OIDC
- Identity and access management (IAM)
- Microservices
- Distributed systems
- +5 more
Azure Engineer - Cloud Native ApplicationsRemote
Major client
£620/dayInside IR35
London · 6 months · BPSS clearance · Posted 18 days ago
- C#
- Azure
- Cloud native
- DevOps
- Azure DevOps
- +3 more
Front Office .Net Developer
High-performing Commodities Trading team
£600–£700/dayInside IR35
London · 6 months · Posted 22 days ago
- C#
- .NET
- Agile
- Azure
- Angular
- +7 more
Senior .NET DeveloperHybrid
Global Markets collateral business
£700–£750/dayInside IR35 (implied)
Bromley · 12 months · Posted 29 days ago
- C#
- .NET
- REST APIs
- Angular
- JavaScript
- +3 more
Automation Application DeveloperHybrid
Banking sector
£400–£440/dayInside IR35
London · 7 months · Posted 35 days ago
- C#
- UiPath / RPA
- Agile
- .NET
- SQL
- +7 more

Contracts, sorted by Posted, newest first. Page 1 of 1.
Role: sort by Role, A to Z	IR35: sort by IR35, outside IR35 first	Rate: sort by Rate, highest first	Location: sort by Location, A to Z	Contract length: sort by Contract length, longest first	Posted: sort by Posted, oldest first
FX Options Pricing Developer - C++ - Front Office - Contract Inside IR35 - Investigo Members only for 2 hours C# C++	Inside IR35	£775–£850/day	London	Not stated	Today
C# .NET Developer Investment banking client C# .NET Object-oriented programming SQL Server REST APIs +1 more	Inside IR35 (implied)	£400–£416/day	London · Hybrid	24 months	5 days ago
Staff Engineer, Premium Finance Integration Well-established organisation in a highly regulated sector delivering services across the UK C# .NET SQL CI/CD DevOps +9 more	Outside IR35	£550/day	London · Hybrid	Not stated	6 days ago
Microsoft Office Add-In Developer (.NET/C#) Prestigious London-based law firm C# .NET Azure Azure DevOps DevOps 2 adverts	Inside IR35	Not stated	Farringdon	Not stated	7 days ago
AI Platform Engineer Local client C# Python Azure SharePoint OpenAI / ChatGPT +7 more	Inside IR35	£450–£480/day	London · Remote	3 months	8 days ago
Staff Engineer Well-established organisation operating within a highly regulated financial services sector C# Migration .NET SQL Financial reporting +7 more	Outside IR35	£550/day	London · Hybrid	Not stated	8 days ago
Design Developer Household-name global leader in architecture and interior design software C# Python JavaScript Revit	IR35 not stated	Not stated	London	Not stated	11 days ago
Senior Developer Consultant (iPaaS & Automation) Fast-paced transformation programme in secure enterprise environment C# Azure Distributed systems Agile PowerShell +7 more	IR35 not stated	£495/day	London · Hybrid	3 months SC clearance	13 days ago
Senior C# / Azure Engineer Data & AI consultancy in Wealth Management C# .NET Azure Event-driven architecture REST APIs +2 more	Outside IR35	£650–£700/day	London	3 months	15 days ago
Senior DevSecOps Engineer Global technology organisation C# DevSecOps DevOps Terraform CI/CD +11 more 2 adverts	Outside IR35	£550–£700/day	London · Hybrid	6 months	18 days ago
Senior C# Backend Engineer Technology-led organisation investing in next-generation platform C# OAuth 2.0 / OIDC Identity and access management (IAM) Microservices Distributed systems +5 more	IR35 not stated	£550–£650/day	London · Hybrid	Not stated	18 days ago
Azure Engineer - Cloud Native Applications Major client C# Azure Cloud native DevOps Azure DevOps +3 more	Inside IR35	£620/day	London · Remote	6 months BPSS clearance	18 days ago
Front Office .Net Developer High-performing Commodities Trading team C# .NET Agile Azure Angular +7 more	Inside IR35	£600–£700/day	London	6 months	22 days ago
Senior .NET Developer Global Markets collateral business C# .NET REST APIs Angular JavaScript +3 more	Inside IR35 (implied)	£700–£750/day	Bromley · Hybrid	12 months	29 days ago
Automation Application Developer Banking sector C# UiPath / RPA Agile .NET SQL +7 more	Inside IR35	£400–£440/day	London · Hybrid	7 months	35 days ago

Contracts come from job boards and employers' own careers sites, updated hourly. IR35 status is as stated in each advert: always confirm it with the hirer.

C# contracts in London

Selected filters

15 contracts found

FX Options Pricing Developer - C++ - Front Office - Contract Inside IR35 - Investigo

C# .NET DeveloperHybrid

Staff Engineer, Premium Finance IntegrationHybrid

Microsoft Office Add-In Developer (.NET/C#)

AI Platform EngineerRemote

Staff EngineerHybrid

Design Developer

Senior Developer Consultant (iPaaS & Automation)Hybrid

Senior C# / Azure Engineer

Senior DevSecOps EngineerHybrid

Senior C# Backend EngineerHybrid

Azure Engineer - Cloud Native ApplicationsRemote

Front Office .Net Developer

Senior .NET DeveloperHybrid

Automation Application DeveloperHybrid