25 of 25 C# Software Engineer Jobs in London

Role Summary We are seeking a hands-on Senior Software Engineer with strong full-stack expertise across TypeScript/React, C#/.NET and modern cloud-native technologies. This role is responsible for designing, building and delivering software solutions end-to-end, owning … management. Key Responsibilities Design, build, test, deploy and support software solutions across the full technology stack. Develop scalable applications using TypeScript, React, C#/.NET and related technologies. Translate business requirements into clear, structured and testable technical specifications, applying Spec-Driven Development principles. Write secure, maintainable ...

Contract C# Software Engineer Near Wimbledon 6-month contract Software Engineer role developing C# Windows applications that interface with hardware. This role is inside IR35 and requires on-site work 3 days per week (full time for the first … weeks). C# Software Engineer skills required - Good analytical skills and experience of code and design review for large projects. Experience of multi-threaded and distributed applications, preferably with an understanding network of protocols. Strong Experience in developing Windows desktop applications in C# Interfacing ...

Junior C# Software Engineer – Quant RiskUp to 80k + BensQuant Capital is urgently looking for a C# Developer to join our high profile client.Our client is a well-known leading provider of integrated risk, analytics and trading solutions for the global financial markets. Their … Computer Science (or other STEM major with relevant experience)· Strong software analysis, design and development skills· Min 2 years professional experience in C#, Python, C++ or Java· Knowledge of relational databases and SQL· Experience in or serious interest in finance and capital markets.This role suits someone from ...

Contract Software Engineers C# & C++ (Linux) Near Wimbledon, London | 6 months | Inside IR35 Were hiring two separate contract engineers to work on hardware-integrated software projects: Contract C# Software Engineer (Windows) C#/.NET Windows desktop applications (Windows Forms …/IP, UDP Hardware/physical product interfacing On-site 3 days per week (initially full-time on-site) Contract C++ Linux Software Engineer (Embedded) Strong C++ on Linux Embedded software experience Networking (TCP/IP, UDP) Build systems (OpenEmbedded/BitBake desirable) Hybrid ...

Software Engineer 6 Month Contract Initially London - 3 days a week onsite £800 - £850 per day - Umbrella A leading Asset Management Firm is searching for a Software Engineer to join them on an interim basis. You will work in the teamresponsible … standards, security, performance, and operational stability. Mentor engineers and support technical decision-making across teams. Manage technical debt, platform upgrades, and vulnerability remediation. Technologies C#/.NET, Microsoft Azure Snowflake Data engineering and integration platforms CI/CD and DevOps Infrastructure as Code Automated testing Agile delivery Desirable Python ...

C# Software Engineer – Greenfield Trading Platform London – Hybrid 3:2 Up to 80,000 + bonusOur client is a London-based hedge fund and proprietary trading firm. This is a new team comprised of seasoned traders and developers with long tenure in the business. This ...

Contract Software Engineers C# & C++ (Linux) Near Wimbledon, London 6 months Inside IR35 Were hiring two separate contract engineers to work on hardware-integrated software projects: Contract C# Software Engineer (Windows) C#/.NET Windows desktop applications (Windows Forms ...

Tech: C#, SQL, ASP.NET, WinformsChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Fintech Trading Platform Vendor, City of London, 30 man flat global Dev TeamPay: 50k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingJunior C# Software EngineerQuant Capital is urgently … looking for a C# Developer to work for our high profile investment management vendor.Our client is a well known global wealth management HFT software business. They provide valuations and pricing of derivatives to most of the buy side.This is an opportunity for an individual with a junior ...

Junior C# Full Stack Software Engineer – Fintech50,000 plus BensRemote WorkingQuant Capital is urgently looking for a Junior C# Full Stack Developer to join our high profile client.My Client is a well known global (yet not too corporate) financial software (fintech) business … must have:We are looking for potential rather than hardcore skills.· Comp Sci degree or similar experience· Some commercial software development experience· C# ASP.Net/.Net Core/MVC· An interest in Angular/React/Blazor SPA· Advance SQL· Git/BitbucketThe Culture of the firm ...

looking for a Senior Software Engineer to join our global team to be responsible for the quality, development, and execution of our software products. You will be part of a technology department that is comprised of a successful and multidisciplinary group of professionals located … related field 8+ years of experience in software development, with a focus on building scalable and reliable systems Extensive knowledge of DotNet C#, LINQ, MS SQL, Entity Framework and related technologies Capable to use version control software such as GIT Knowledge of SOLID principles Knowledge ...

building the first global data-driven last-mile network that has the potential to solve industry-wide problems. We're hiring a Senior Software Engineer who treats software as a craft, not a checklist. You'll join a small, high-trust team where ownership … Work outside strict role boundaries when needed, without feeding burnout culture Communicate technical decisions clearly and push back constructively when required Core technical skills C#/.NET 8+ , Entity Framework Core, async/await, MediatR/CQRS Strong understanding of distributed systems : consistency models, event-driven patterns, idempotency, race ...

## Principal Software Engineer - C#Applylocations: Londontime type: Full timeposted on: Posted Todayjob requisition id: R5616The TP ICAP Group is a world leading provider of market infrastructure.Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution … hour, multi-region trading operations (follow-the-sun handover, timezone-aware processing across London/New York/Singapore)Technical:* Expert-level C#/.NET (LTS): back-end services with ASP.NET Core.* Experience designing and delivering event-driven, service-oriented back-end systems (message brokers, async workflows, API design ...

working with a highly successful buy-side investment manager that's investing heavily in software engineering, data platforms and AI as part of a firm-wide technology transformation. They're looking for a Senior Software Engineer to join a small, high-performing team where … while exploring agentic workflows across the organisation. What You'll Be Working On Designing and building full-stack applications and internal business platforms using C#/.NET Developing APIs, integrations and cloud-native solutions across Azure Building and maintaining Azure SQL and ETL/ELT data pipelines Modernising reporting ...

Digital is seeking a Software Engineer to join its London-based, on-site team. You will design, build, and maintain C#/.NET production code and SQL Server-driven components, with core logic living in the database. Expect close collaboration with the Founder ...

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

Role Purpose We are seeking a highly experienced Principal Software Engineer to provide technical leadership across our technology function, driving the design, delivery, and continuous improvement of enterprise applications and digital services. This is a senior hands-on role for an individual who combines deep technical … design and architecture of scalable, secure, and resilient enterprise applications, ensuring alignment with business and technology strategies. Drive Technical Leadership – Define and champion software engineering standards, architectural patterns, best practices, and reusable frameworks across the engineering community. Own Delivery Outcomes – Lead complex technology initiatives from concept through ...

Source Technology Limited is seeking a Software Engineer for a six-month contract in London. The role is 3 days per week onsite, with a daily rate of £800–£850 (umbrella). You will design scalable applications and data solutions across client onboarding to reporting, delivering ...

000Sector: I.T. & CommunicationsJob Type: PermanentWork Hours: Full TimeContact: Jas GujralEmail: cv@nexusjobs.comTelephone: 020 7488 6900Apply for this job nowJob DescriptionSoftware Engineer with C# or Java and AzureMust have a bachelor's degree in computer science, software engineering, or a related field is required.Must have … Office 365 suite, SharePoint Online, Power Apps, GitHub, MS Teams, etc.In-depth knowledge & experience using Visual Studio, with one of the programming languages: C#/Java/JavaScript/Python, and PowerShell.In-depth knowledge and thorough experience of using Serverless, SOAP, XML, REST, JSON, EDI, XSLT, Async/Sync ...

Role Overview ICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands‐on delivery of a desktop platform automating and streamlining trading desk workflows. This is a high‐visibility player‐coach role that may evolve to include formal people management. Role Responsibilities … hour, multi‐region trading operations (follow‐the‐sun handover, timezone‐aware processing across London/New York/Singapore). Expert‐level C#/.NET (LTS): back‐end services with ASP.NET Core. Experience designing and delivering event‐driven, service‐oriented back‐end systems (message brokers, async workflows, API design ...

goal is to drive efficiency, speed up transactions, reduce risk, and improve the end-customer experience. Our platform is built on a proven C# and .NET foundation, and we're building what comes next on top of it. That means new frontier AI capabilities in TypeScript, sitting alongside … C# estate we're actively evolving for the next era. The interesting challenge isn't just being productive in both stacks, it's knowing when each is the right tool and keeping the whole system coherent as our product grows. If you are passionate about how software ...

ICAP Group Services Ltd is seeking a Software Engineering Team Lead in London to manage a talented team delivering critical software for internal broking. You will work collaboratively in an Agile environment from design to implementation, ensuring quality and timely delivery of solutions. The ideal candidate ...

seeking a skilled IT professional to develop and maintain user software applications tailored for Commodities Markets. Candidates should possess extensive experience in C#/.NET development and a strong understanding of financial markets. The position requires working closely with front office teams, providing essential support and contributing ...

Greater London, UK. The role involves designing and maintaining scalable systems, implementing quality solutions, and participating in Agile practices. Key qualifications include expertise in C# and .NET Core, proficiency in Agile methodologies, and a relevant degree or certification. The company offers extensive learning programs, extensive employee benefits including free ...

Capital on Tap is seeking an AI Product Engineer to help the engineering and product teams leverage AI effectively across products and services. The role focuses on agentic systems, orchestration, and enabling teams to deliver high-quality software faster, with hands-on coding and architecture work. ...

consists of a dedicated team that executes complex, multi-leg synthetic strategies on behalf of institutional clients.Role OverviewICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands-on delivery of desktop platform automating and streamlining trading desk workflows. This is a high-visibility player … hour, multi-region trading operations (follow-the-sun handover, timezone-aware processing across London/New York/Singapore)Technical:Expert-level C#/.NET (LTS): back-end services with ASP.NET Core.Experience designing and delivering event-driven, service-oriented back-end systems (message brokers, async workflows, API design ...