1 to 25 of 29 C# Developer Jobs in Central London

Senior C# Developer/Engineer (C# .Net Core React) London/WFH to £80k Are you a skilled C# Developer looking to work on complex and interesting systems with continual learning and self development opportunities? You could be progressing your career at in … a senior, hands-on role at a successful and scaling Retail FX Brokerage working on Greenfield systems. As a Senior C# Developer you'll be designing and developing high quality, maintainable, and reliable code for a real-time, low latency trading systems built mostly in C# and React deployed to Azure. You'll focus on C# .Net backend development within an AWS environment, but also with exposure across the full technology stack in a modern development environment with microservices. There are many technical challenges to explore, the initial project will be to build a More ❯

Senior C# Developer - Systematic Trading Firm | Up to £140K Base A high-growth systematic trading firm are searching for an experienced C# Developer to join their Data Applications team. This team sits at the heart of the business giving you exposure to many exciting … with access to the founder and C level individuals Free daily lunch and snacks Requirements: 10+ years of software engineering experience Strong proficiency in C# Track record of delivering scalable, greenfield products Relational database experience - ideally Postgres API experience Ideally proficiency in React and/or Typescript Bachelor's More ❯

Senior C# Developer - Systematic Trading Firm | Up to £140K Base A high-growth systematic trading firm are searching for an experienced C# Developer to join their Data Applications team. This team sits at the heart of the business giving you exposure to many exciting … with access to the founder and C level individuals Free daily lunch and snacks Requirements: 10+ years of software engineering experience Strong proficiency in C# Track record of delivering scalable, greenfield products Relational database experience - ideally Postgres API experience Ideally proficiency in React and/or Typescript Bachelor's More ❯

London/Hybrid | 💷 £750/day | 🗓 12-Month Rolling | ✅ Outside IR35 Our client, a leading investment management firm, are looking for a senior C# Developer to join their tech team on a long-term outside IR35 contract. You’ll be building and enhancing complex systems that support … a modern, event-driven architecture. Expect a fast-paced, collaborative environment where your code genuinely matters. What you’ll be doing: Developing high-performance C#/.NET Core applications Working on distributed systems and microservices Collaborating across tech and business teams Supporting cloud-based and DevOps-first deployments Tech … you'll be using: C#/.NET Core Kafka/RabbitMQ (or similar messaging frameworks) SQL Server Azure or AWS CI/CD tools (Azure DevOps, TeamCity) Docker/Kubernetes (nice to have) What we’re looking for: Proven C# expertise in a financial services or trading environment More ❯

London/Hybrid | 💷 £750/day | 🗓 12-Month Rolling | ✅ Outside IR35 Our client, a leading investment management firm, are looking for a senior C# Developer to join their tech team on a long-term outside IR35 contract. You’ll be building and enhancing complex systems that support … a modern, event-driven architecture. Expect a fast-paced, collaborative environment where your code genuinely matters. What you’ll be doing: Developing high-performance C#/.NET Core applications Working on distributed systems and microservices Collaborating across tech and business teams Supporting cloud-based and DevOps-first deployments Tech … you'll be using: C#/.NET Core Kafka/RabbitMQ (or similar messaging frameworks) SQL Server Azure or AWS CI/CD tools (Azure DevOps, TeamCity) Docker/Kubernetes (nice to have) What we’re looking for: Proven C# expertise in a financial services or trading environment More ❯

us with problems that need genuine thought, intelligence and knowledge; we're not just putting bodies on seats. We are seeking a highly skilled C# Developer with a strong background in asset management or investment banking. The ideal candidate will possess expert-level proficiency in C# … Forms and front-end development frameworks such as Angular will be considered advantageous. Key Responsibilities: Design, develop, and maintain high-quality software applications using C# and .NET technologies (both .NET Framework 4.8 and .NET 8). Collaborate with cross-functional teams to gather and analyze business requirements and translate … Conduct code reviews and provide technical guidance to junior developers. Troubleshoot and debug applications to ensure optimal functionality and performance. Expert level developing in C#/.NET (.NET Framework 4.8 + .NET 8) Strong SQL experience (SQL Server and PostgreSQL) Experience with Kafka Windows Forms (.NET Framework) (Nice to More ❯

D365BC/C# Integrations Developer - UK Remote, £65k Client: Conspicuous Location: London (City of London), United Kingdom Job Category: Other EU work permit required: Yes Job Views: 4 Posted: 06.06.2025 Expiry Date: 21.07.2025 Job Description: D365BC/C# Integrations Developer - UK Remote, £65k Note … involved with Dynamics D365BC (this is a D365BC role) Role You will join a small partner company seeking a D365BC Developer with C# skills to create API integrations for their clients. Key Skills Dynamics D365BC Development (ESSENTIAL) Location: UK based You will be part of a small More ❯

Social network you want to login/join with: DevOps Software Developer - C#/Azure - UK Remote, london (city of london) col-narrow-left Client: Mayflower Recruitment Ltd Location: london (city of london), United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job … reliably. Key Responsibilities: Design, build, and maintain robust CI/CD pipelines to accelerate the software development lifecycle Develop internal tools and services in C# to support build automation, deployment, and testing Refactor and enhance existing codebases to improve stability, performance, and maintainability Automate environment provisioning for development, testing … align infrastructure and development workflows Minimum Qualifications: A degree in Computer Science, Engineering, or a related field, or equivalent experience Strong programming skills in C# and familiarity with object-oriented design principles Solid experience with DevOps practices and software delivery automation Hands-on experience building and deploying containerized applications More ❯

version. Bonus points if you can find the more analeptic version. And provide proof of your quest. Good luck! The Junior Back End Developer will work for a fast-growing SaaS business in central London. The Junior Back End Developer will earn £35,000 per annum … and potentially more for exceptional candidates. The Junior Back End Developer will be comfortable with hybrid working on a 4+1 basis. The Junior Back End Developer will be part of a strong work/life balance culture. The Junior Back End Developer will be familiar with the C# .NET ecosystem. The Junior Back End Developer will have some understanding of Typescript, HTML and CSS. The Junior Back End Developer More ❯

version. Bonus points if you can find the more analeptic version. And provide proof of your quest. Good luck! The Junior Back End Developer will work for a fast-growing SaaS business in central London. The Junior Back End Developer will earn £35,000 per annum … and potentially more for exceptional candidates. The Junior Back End Developer will be comfortable with hybrid working on a 4+1 basis. The Junior Back End Developer will be part of a strong work/life balance culture. The Junior Back End Developer will be familiar with the C# .NET ecosystem. The Junior Back End Developer will have some understanding of Typescript, HTML and CSS. The Junior Back End Developer More ❯

C# .net Developer - Insurance Our Client is an insurance underwriter in the City of London. They are now looking to grow their software development team and are looking to recruit a C# .net Software Developer. You will have at least 5 to 7 years expertise in … developing complex software with C#. A strong mathematical background would be advantageous but not required. Must have excellent communication and interpersonal skills. Expert in C# Development coupled with Java/jQuery Web development Web API, CSS. You will have solid SQL Server experience (stored procedures, table design and some … ideal candidate will have a drive to succeed, take part in IT strategy and work in a technology rich and agile environment. The developer will be part of a small team with responsibilities for ensuring the business has full support regarding IT systems. Key aspects of the role More ❯

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# … pricing APIs. Maintaining the company’s daily operation on the existing platforms. Essential skills :- Minimum 3 to 5 years experience of Microsoft web technologies ( C#, ASP.NET Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce More ❯

A leading Financial Services client is seeking to recruit a C# Developer on an initial 6 month contract to be based in London on a hybrid basis, 3 days per week. You will be required to develop and support Business applications using the MS .Net platform with … Implementation, Production and Disaster Recovery environments supporting users and preparing documents. Along with the application development, this role will also include supporting the existing C# and .NET applications. Hands-on skills in WPF and Windows application development required. More ❯

C# .NET Software Developer with FX Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven trach record of developing with C# .NET ideally with …/tradeflow and pricing APIs. Maintaining the company’s daily operation on the existing platforms. Essential skills :- Minimum 3 years experience Microsoft web technologies ( C#, ASP.NET Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce More ❯

D365BC/C# Integrations Developer - UK Remote, £65k DO NOT APPLY if you are not involved with Dynamics D365BC (this is a D365BC role) Role You will join a small Partner who are looking for a D365BC Developer to with C# skills to create … API integrations for their clients. Key Skills Dynamics D365BC Developement (ESSENTIAL) C# API Integration development (ESSENTIAL) Good English communication Location: UK based No sponsorship available Opportunity You will join a small, friendly team of engineers working on Dynamics D365BC implementations. Want something new/exciting? Contact: Foz (foz.jan@conspicuous.com More ❯

D365BC/C# Integrations Developer - UK Remote, £65k DO NOT APPLY if you are not involved with Dynamics D365BC (this is a D365BC role) Role You will join a small Partner who are looking for a D365BC Developer to with C# skills to create … API integrations for their clients. Key Skills Dynamics D365BC Developement (ESSENTIAL) C# API Integration development (ESSENTIAL) Good English communication Location: UK based No sponsorship available Opportunity You will join a small, friendly team of engineers working on Dynamics D365BC implementations. Want something new/exciting? Contact: Foz (foz.jan@conspicuous.com More ❯

D365BC/C# Integrations Developer - UK Remote, £65k DO NOT APPLY if you are not involved with Dynamics D365BC (this is a D365BC role) Role You will join a small Partner who are looking for a D365BC Developer to with C# skills to create … API integrations for their clients. Key Skills Dynamics D365BC Developement (ESSENTIAL) C# API Integration development (ESSENTIAL) Good English communication Location: UK based No sponsorship available Opportunity You will join a small, friendly team of engineers working on Dynamics D365BC implementations. Want something new/exciting? Contact: Foz (foz.jan@conspicuous.com More ❯

D365BC/C# Integrations Developer - UK Remote, £65k DO NOT APPLY if you are not involved with Dynamics D365BC (this is a D365BC role) Role You will join a small Partner who are looking for a D365BC Developer to with C# skills to create … API integrations for their clients. Key Skills Dynamics D365BC Developement (ESSENTIAL) C# API Integration development (ESSENTIAL) Good English communication Location: UK based No sponsorship available Opportunity You will join a small, friendly team of engineers working on Dynamics D365BC implementations. Want something new/exciting? Contact: Foz (foz.jan@conspicuous.com More ❯

D365BC/C# Integrations Developer - UK Remote, £65k DO NOT APPLY if you are not involved with Dynamics D365BC (this is a D365BC role) Role You will join a small Partner who are looking for a D365BC Developer to with C# skills to create … API integrations for their clients. Key Skills Dynamics D365BC Developement (ESSENTIAL) C# API Integration development (ESSENTIAL) Good English communication Location: UK based No sponsorship available Opportunity You will join a small, friendly team of engineers working on Dynamics D365BC implementations. Want something new/exciting? Contact: Foz (foz.jan@conspicuous.com More ❯

C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# … pricing APIs. Maintaining the company’s daily operation on the existing platforms. Essential skills :- Minimum 3 to 5 years experience of Microsoft web technologies ( C#, ASP.NET Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce More ❯

month contract - Inside IR35 Our industry leading investment banking client is looking for a senior C# Quant Developer to come in on a 6 month rolling contract, working with a hybrid model. Essential skills/attributes: Expert C# development skills Expert distributed systems, streaming, messaging (Rx More ❯

month contract - Inside IR35 Our industry leading investment banking client is looking for a senior C# Quant Developer to come in on a 6 month rolling contract, working with a hybrid model. Essential skills/attributes: Expert C# development skills Expert distributed systems, streaming, messaging (Rx More ❯

Job Title: Lead Software Engineer, Principal Developer, Terraform, AZURE, C# 100% Remote UK Inside IR35, London (City of London) Client: Experis UK Location: London (City of London), United Kingdom Job Category: Other EU work permit required: Yes Job Views: 1 Posted: 25.05.2025 Expiry Date: 09.07.2025 Job Description … contract, with potential for extension. The role involves creating scalable, high-quality solutions, mentoring junior developers, and supporting ongoing projects. Responsibilities: Develop and adapt C#/.NET Core services to meet business needs. Mentor team members through pair programming, peer reviews, and team discussions. Support and improve existing systems … successful project delivery. Experience mentoring and working in agile teams. Strong diagnostic skills and support experience. At least 5 years of extensive experience with C# and .NET Core. Deep understanding of OO principles and SOLID design. Proven experience with Microsoft Azure and Terraform. Strong SQL and database design skills. More ❯

A prestigious Consultancy in central London, specialising in Asset Management, is looking to engage a number of talented Analyst Developers skilled in Python, advanced C#, or advanced VBA for an exciting Code Rationalisation project on behalf of their esteemed end client. In this pivotal role, you will conduct in … a rich skill set, including a strong background in Asset Management, comprehensive knowledge of middle and back-office systems, and advanced proficiency in Python, C#, and VBA. Additionally, you should be adept at crafting clear and concise requirements. These Analyst Programmer positions are offered on an initial fixed-term More ❯

crucial role in creating high-quality, scalable, and resilient solutions while mentoring junior team members and supporting existing initiatives. Responsibilities: Create and adapt new C#/.NET Core services to meet evolving business requirements. Mentor and coach existing team members through pair programming , peer reviews , and team talks , helping … them improve their C#/.NET Core skills. Support and enhance current systems and initiatives during office hours, ensuring that service level objectives are met. Maintain a strong focus on quality, reusability, clean architectures, security, and resilience across the full application lifecycle. Collaborate with the Lead Developer … of an agile and self-improving team. Strong diagnostic skills and experience providing levels of support when issues arise. Extensive experience ( 5+ years ) with C# and .NET Core . Deep understanding of Object-Oriented (OO) concepts and SOLID design principles . Proven experience developing in Microsoft Azure and using More ❯