C# contracts

31 open C# contracts, typically £485–£605 a day.

Open contracts: 31
Typical day rate: £485–£605Median £550, from 24 contracts stating a rate
Outside IR35: 43%of the 23 that state a status

At the median £550 a day over 220 working days, you'd take home about £75,127 a year outside IR35, or £70,696 inside IR35. Work out your own take-home pay

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31 contracts found

FX Options Pricing Developer - C++ - Front Office - Contract Inside IR35 - Investigo
Members only for 3 hours
£775–£850/dayInside IR35
London · Posted today
- C#
- C++
NET Solutions ArchitectHybrid
Members only for 3 hours
£500–£600/dayOutside IR35
East Midlands · 6 months · Posted today
- C#
- Solution architecture
- .NET
- Microservices
- Azure
- +1 more
SmartCOMM DeveloperRemote
£500/dayInside IR35
6 months · Posted 4 days ago
- 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
Teamcenter PLM Technical Consultant
Complex engineering environment
£488–£525/day£65–£70/hrIR35 not stated
Reading · 3 months · Posted 7 days ago
- C#
- .NET
- C++
- SQL
- Data migration
- +4 more
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
Software Developer
Organisation supporting essential services
Rate not statedIR35 not stated
Newcastle Upon Tyne · Posted 10 days ago
- C#
- .NET
- Azure
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 Dynamics 365 DeveloperHybrid
Established UK energy supplier
Rate not statedIR35 not stated
Manchester · Posted 12 days ago
- C#
- Dynamics 365
- Power Platform
- .NET
- JavaScript
- +3 more
Senior System ArchitectHybrid
Technology Solutions division developing connected IoT devices and products
Rate not statedIR35 not stated
Cambridge · 24 months · Posted 13 days ago
- C#
- Systems engineering
- Embedded systems
- IoT
- Linux
- +5 more
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 Software EngineerOn site
Naval Combat Systems programme
£375–£503/day£50–£67/hrInside IR35
New Malden · 12 months · SC clearance · Posted 15 days ago
- C#
- C++
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 Full Stack .NET DeveloperRemote
Global SaaS platform
£400–£450/dayOutside IR35
Posted 17 days ago
- C#
- .NET
- ASP.NET
- Vue.js
- TypeScript
- +3 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
Technical AI ConsultantHybrid
Software engineering team
£550–£600/dayOutside IR35
Reading · 3 months · Posted 27 days ago
- C#
- .NET
- Agentic AI
- LLMs / generative AI
- Claude (Anthropic)
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
C#, WPF, .NET DeveloperHybrid
Global company
Rate not statedOutside IR35
12 months · Posted 30 days ago
- C#
- .NET
- Design patterns
- Git / GitHub
- Scrum
C# Software EngineerHybrid
Leading organisation within the defence and security sector
£585/day£78/hrInside IR35
Luton · 12 months · SC clearance · Posted 35 days ago
- C#
- .NET
- Object-oriented programming
- Test automation
- CI/CD
- +2 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
C# Software Engineer
Market-leading Defence and Aerospace company
£488/day£65/hrInside IR35
Stevenage · 12 months · SC clearance · Posted 39 days ago
- C#
- C++
- Agile
- CI/CD
- Test-driven development
- +4 more
3 adverts
Agentic AI Engineer, .NET, C#Hybrid
Global technology leader, NASDAQ listed
£450–£525/dayInside IR35
Bristol · 6 months · Posted 40 days ago
- C#
- Agentic AI
- .NET
- ASP.NET
- LLMs / generative AI
- +2 more
2 adverts
Full Stack Developer (React / C# .NET)Hybrid
Major business transformation programme
£450–£500/dayOutside IR35
Birmingham · 3 months · Posted 42 days ago
- C#
- React
- .NET
- ETL
- REST APIs
- +3 more
3 adverts
Software Test Engineer / Lead
Fastest growing technology company
Rate not statedOutside IR35
East of England · 12 months · Posted 49 days ago
- C#
- Manual testing
- Performance testing
- Test management
- .NET
- +1 more
.NET and C# DeveloperHybrid
Specialist company in Nottingham
£500–£600/dayIR35 not stated
Nottingham · 6 months · Posted 54 days ago
- C#
- .NET
- ASP.NET
- AWS
- NoSQL
- +9 more
2 adverts

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 3 hours C# C++	Inside IR35	£775–£850/day	London	Not stated	Today
NET Solutions Architect Members only for 3 hours C# Solution architecture .NET Microservices Azure +1 more	Outside IR35	£500–£600/day	East Midlands · Hybrid	6 months	Today
SmartCOMM Developer C#	Inside IR35	£500/day	Remote	6 months	4 days ago
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
Teamcenter PLM Technical Consultant Complex engineering environment C# .NET C++ SQL Data migration +4 more	IR35 not stated	£488–£525/day £65–£70/hr	Reading	3 months	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
Software Developer Organisation supporting essential services C# .NET Azure	IR35 not stated	Not stated	Newcastle Upon Tyne	Not stated	10 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 Dynamics 365 Developer Established UK energy supplier C# Dynamics 365 Power Platform .NET JavaScript +3 more	IR35 not stated	Not stated	Manchester · Hybrid	Not stated	12 days ago
Senior System Architect Technology Solutions division developing connected IoT devices and products C# Systems engineering Embedded systems IoT Linux +5 more	IR35 not stated	Not stated	Cambridge · Hybrid	24 months	13 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 Software Engineer Naval Combat Systems programme C# C++	Inside IR35	£375–£503/day £50–£67/hr	New Malden · On site	12 months SC clearance	15 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 Full Stack .NET Developer Global SaaS platform C# .NET ASP.NET Vue.js TypeScript +3 more	Outside IR35	£400–£450/day	Remote	Not stated	17 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
Technical AI Consultant Software engineering team C# .NET Agentic AI LLMs / generative AI Claude (Anthropic)	Outside IR35	£550–£600/day	Reading · Hybrid	3 months	27 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
C#, WPF, .NET Developer Global company C# .NET Design patterns Git / GitHub Scrum	Outside IR35	Not stated	Hybrid	12 months	30 days ago
C# Software Engineer Leading organisation within the defence and security sector C# .NET Object-oriented programming Test automation CI/CD +2 more	Inside IR35	£585/day £78/hr	Luton · Hybrid	12 months SC clearance	35 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
C# Software Engineer Market-leading Defence and Aerospace company C# C++ Agile CI/CD Test-driven development +4 more 3 adverts	Inside IR35	£488/day £65/hr	Stevenage	12 months SC clearance	39 days ago
Agentic AI Engineer, .NET, C# Global technology leader, NASDAQ listed C# Agentic AI .NET ASP.NET LLMs / generative AI +2 more 2 adverts	Inside IR35	£450–£525/day	Bristol · Hybrid	6 months	40 days ago
Full Stack Developer (React / C# .NET) Major business transformation programme C# React .NET ETL REST APIs +3 more 3 adverts	Outside IR35	£450–£500/day	Birmingham · Hybrid	3 months	42 days ago
Software Test Engineer / Lead Fastest growing technology company C# Manual testing Performance testing Test management .NET +1 more	Outside IR35	Not stated	East of England	12 months	49 days ago
.NET and C# Developer Specialist company in Nottingham C# .NET ASP.NET AWS NoSQL +9 more 2 adverts	IR35 not stated	£500–£600/day	Nottingham · Hybrid	6 months	54 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

Selected filters

31 contracts found

NET Solutions ArchitectHybrid

SmartCOMM DeveloperRemote

C# .NET DeveloperHybrid

Staff Engineer, Premium Finance IntegrationHybrid

AI Platform EngineerRemote

Staff EngineerHybrid

Senior Dynamics 365 DeveloperHybrid

Senior System ArchitectHybrid

Senior Developer Consultant (iPaaS & Automation)Hybrid

Senior Software EngineerOn site

Senior Full Stack .NET DeveloperRemote

Senior DevSecOps EngineerHybrid

Senior C# Backend EngineerHybrid

Azure Engineer - Cloud Native ApplicationsRemote

Technical AI ConsultantHybrid

Senior .NET DeveloperHybrid

C#, WPF, .NET DeveloperHybrid

C# Software EngineerHybrid

Automation Application DeveloperHybrid

Agentic AI Engineer, .NET, C#Hybrid

Full Stack Developer (React / C# .NET)Hybrid

.NET and C# DeveloperHybrid