1 to 25 of 44 Permanent C# Developer Jobs in London

C# Developer/Software Engineer (SQL ASP.Net) London to £50k Are you a talented C# Developer looking to take on real responsibility in a small, ambitious start-up? You could be progressing your career at a growing technology business developing an online platform that … team of just five people, giving you the opportunity to make a genuine impact on the product and how the business evolves. As a C# Developer you'll work across the full stack, developing consumer facing web and mobile applications alongside internal back office systems. Using C# ...

C# Developer/Software Engineer (SQL ASP.Net) London to £50k Are you a talented C# Developer looking to take on real responsibility in a small, ambitious start-up? You could be progressing your career at a growing technology business developing an online platform that ...

Talan is looking for a talented and driven C# Developer to join a high-performing team in London. This is a hybrid role, with 3 days per week on-site, offering the opportunity to work on cutting-edge financial systems within a global markets environment. You will … across the full development lifecycle from design and implementation to optimisation and deployment. What You’ll Be Doing Developing and maintaining scalable .NET/C# services within a distributed streaming architecture Building and supporting real-time data processing systems for P&L and risk analytics Working ...

fantastic opportunity for an ambitious Junior C# Developer to accelerate their career within a highly technical trading environment. We are looking for a Junior C# .NET Developer to join a growing technology team responsible for building and supporting high-performance, real-time software used … within trading. This is an ideal opportunity for a graduate or early-career developer who has already gained some commercial C# experience and now wants to take a significant step forward technically. You'll work alongside experienced software engineers, gaining hands-on exposure to trading systems, real ...

Hybrid – two days onsite, three days remote Employment: Permanent | 38.5 hours per week The opportunity An established international technology business is looking for a C# developer to help build a new Identity and Access Management component for its software products. You’ll work on authentication, authorisation … development team and work closely with the first project adopting the component. What you’ll do Develop reusable identity and access management functionality using C#/.NET. Integrate authentication and authorisation into desktop and web applications. Work with modern authentication standards, including OAuth 2.0 and OpenID Connect. Design clear ...

## C# Developer in TestApply: London - 2 Gresham Street: Full time: Posted Today: R-6208Developers in Test are key to the continued stability and delivery of our software. Candidates should be passionate about delivering high-quality software and committed to ensuring our clients have the best user … business, while regularly participating in knowledge-sharing sessions with the wider engineering team.### ****The Person***** Technical Experience: 3+ years of hands-on experience with C#, including writing unit and integration tests and utilizing mocking frameworks.* Automation Frameworks: Strong background developing, maintaining, and scaling automated test frameworks, with at least ...

Senior Full Stack C# Developer | Contract| Inside IR35 | London Our investment banking clients is seeking a Senior Full Stack Developer to join its Front Office FX technology team, building and enhancing business-critical systems used across London, New York and Singapore. This role sits within … strategic enhancements used daily by traders and operational teams across the bank. What You’ll Be Doing Building new features across a modern C#/.NET platform Designing and developing REST APIs and backend services Enhancing deal capture and post-trade processing systems Working on messaging and event-driven ...

Talan is seeking a skilled C# Developer with REACT experience to join our delivery teams working on Front Office platforms within Global Markets environments . In this role, you will design, build, and enhance regulatory, alerting, and sales enablement solutions , supporting front-office users in fast-paced ...

Investigo in London is seeking a Senior Full Stack C# Developer to join its Front Office FX technology team, building and supporting business-critical systems used across London, New York and Singapore. You’ll work on a modern C#/.NET platform, design REST APIs ...

Version 1 is seeking a skilled .NET/C# developer to work closely with customers, developing software, and modernising legacy applications. You will write custom code, support clients, and influence project direction in a consultancy role. Join an award-winning employer that emphasizes wellbeing, professional growth ...

C# Quant Developer | Risk & P&L Systems | Front Office | Contract Inside IR35 Our investment banking client is looking for a strong C# developer to join its FX Options Risk & P&L technology team. This role sits between technology, quants and trading and would suit … frameworks. The hiring manager is specifically looking for developers who understand the underlying concepts and calculations rather than simply consuming downstream outputs. Alongside strong C# development capability, experience designing or supporting distributed computing environments is highly sought after. Required Experience Strong C#.NET Core Risk systems P&L systems Greeks ...

Cloudspirit is looking for a talented C# Developer to join a high-performing team in London. As part of a hybrid role, you will work on innovative financial systems within a global markets environment, contributing to a distributed P&L and risk analytics platform. Your responsibilities include … developing .NET/C# services and implementing Agile best practices. The position offers collaboration with global teams and the chance to participate in the full software development lifecycle. #J-18808-Ljbffr ...

working with a leading systematic hedge fund in New York that is seeking an elite C# Developer to join its Risk Development team in London. This is a front-footed technical role in one of the most business-critical engineering groups in the firm – focused on designing ...

Role: Senior C# .NET Developer Location: London, UK Working Pattern: Hybrid, 3 days per week onsite, Canary Wharf or Liverpool Street Employment Type: Contract Rate: £500 a day Inside IR35 via Umbrella Role Overview We are seeking experienced Senior C# .NET Developers to join a strategic … teams to deliver scalable, secure and high-performing solutions in a highly regulated environment. Key Responsibilities Design, develop and maintain enterprise applications using C# and .NET. Develop scalable, secure and high-performance APIs, services and distributed applications. Work with Technical Analysts and business stakeholders to translate requirements into technical ...

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.NETCore MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce clean ...

Talan is looking for a talented and driven C# Redis Developer to join a high-performing team in London. This is a hybrid role, with 3 days per week on-site, offering the opportunity to work on cutting‐edge financial systems within a global markets environment. … across the full development lifecycle from design and implementation to optimisation and deployment. What You’ll Be Doing Developing and maintaining scalable .NET/C# services within a distributed streaming architecture Building and supporting real‐time data processing systems for P&L and risk analytics Working ...

software development lifecycle while supporting high engineering standards within a collaborative team environment. Key Responsibilities: Design, develop, and enhance enterprise-level software solutions using C#, .NET/.NET Core, Razor, Web API, SQL Server, HTML, and JavaScript. Work closely with Product Owners, testers, UI/UX specialists, and Engineering … difference to our customers. Proven experience as a Senior Developer within a SaaS or enterprise software environment. Strong hands‐on expertise in C#, .NET/.NET Core, and SQL/T‐SQL. Solid understanding of database design, performance optimisation, and query tuning. Experience delivering front‐end functionality ...

C#/.NET Developer – Front Office, Electronic & Low Latency Trading Systems Join MARGO in the UK (London) – Perm & Contracting Opportunities MARGO is a tech-native consultancy delivering high value-added IT expertise to the financial services industry. We specialise in complex software engineering environments where performance, robustness … Front Office/Trading IT environment of one of our tier-1 investment banking or trading partners. The teams design and maintain mission-critical C#/.NET systems supporting electronic trading, real-time risk and analytics platforms across multiple asset classes (Equities, Fixed Income, Commodities, FX, Derivatives). These ...

Recruitment is seeking an experienced Senior C# Developer for a Tier 1 Investment Bank in Canary Wharf. You will contribute to modernising core desktop applications, moving to web-based and cloud-enabled platforms, and shaping future-state architecture within a large enterprise. You'll work across ...

Talan Group is seeking a skilled C# Developer with REACT experience to join their delivery teams for Front Office platforms within Global Markets environments. The role involves designing and building high-performance applications that impact sales and trading activities. Candidates should have a solid background ...

Talan is looking for a skilled C# Developer with REACT experience to join their delivery teams focusing on Front Office platforms. You will design and enhance regulatory and sales enablement solutions in fast-paced trading environments. This role requires strong collaboration with stakeholders and contributions across ...

Microsoft Office Add-In Developer (.NET/C#) Office Addins | VSTO | Azure | Azure DevOps | Inside IR35 | ASAP Start | Contract until January 2027 We're partnering with a prestigious London-based law firm to secure an experienced Microsoft Office Add-In Developer to support the development … maintenance of bespoke Office solutions used across the business. This role is ideal for a developer with strong experience in .NET, C#, VSTO and custom Microsoft Office add-ins , alongside exposure to Azure-hosted solutions and Azure DevOps (ADO) pipelines . While primarily remote, candidates should ...

even better. The work is a mixture of green-field and legacy projects (much like any other mature organisation) mostly using C#, SQL Server, Next.js, React & TypeScript, with a combination of monolithic and microservices architectures. Key Responsibilities We are looking for technically strong and organised senior developers to join … Experience We would like to meet someone who is Minimum 6 years of commercial experience of React/TypeScript Minimum 6 years of solid C# in a commercial environment Produces initial results rapidly and iterate based upon feedback. Knowledge of microservice design principles - preferably with commercial experience. Experience with ...

Years of relevant experience 3+ years Education Level Bachelor's Degree About the Job Our Client is looking to recruit a C# .net Software Developer with SQL skills. The Client produces information for the Oil and Gas industry and you will be involved in helping their clients … team visualise and interact with the company’s research data. Required Skills .net 4, c# , asp.net MS SQL (Working with and developing relational databases in SQL) Stored procedures, Functions, SSIS HTML,CSS Web Services Java script Jquery, AJAX, XML Desirable Skills GIS Business Intelligent Tools eg. Logi, Tablae This ...

Financial Services Level: Vice President Employment Type: Permanent The Opportunity We are working with a leading global investment bank seeking an experienced VP-level C# Software Engineer to join its Front Office Securities Financing Technology function in London. This is an opportunity to take technical ownership within a global … platforms. The organisation is investing significantly in its technology capabilities, evolving from a predominantly Microsoft-based environment towards a modern, cloud-enabled architecture incorporating C#, .NET Core, Java, AWS, Kafka and Redis . The successful candidate will combine strong hands-on engineering expertise with the ability to independently design ...