51 to 75 of 81 C# Jobs in Central London

Senior Software Engineer who thrives on untangling complex systems and modernising core infrastructure without breaking production. This is an exciting opportunity to modernise core C#/SQL systems! Extract legacy business logic, build clean services, and verify changes in shadow mode with zero downtime to revenue flows. Extract business rules … scattered across C#, embedded JavaScript and undocumented SQL stored procedures into a clean, tested, dependency-free rules assemblies. Build new services cleanly. with proper Dependency Injection (DI), robust authentication/authorization, structured logging, and full observability. Work fluently across both legacy .NET Framework 4.8 (ASP.NET MVC5, WebAPI ...

Senior Software Developer Location: London - hybrid, 3 days per week in the office Salary: c£65,000 - £75,000 + bonus The Opportunity - Senior Developer - Cloud Platform & AI We're recruiting for a Senior Software ...

engineering, or 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 of clean code ...

Backend Software Engineer/Developer (C# .Net AWS Python) London/WFH to £100k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression … days a week. About you: You are an experienced Software Developer/Engineer with a strong knowledge of modern best practice You have strong C# backend development skills, ideally also Python coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems ...

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 a C# … there's never been a better time to join us. What You'll Do Identify the right problems to solve across a dual-stack C# and TypeScript backend, being intentional about choosing the right tool for the job. Implement microfrontend web applications in React and TypeScript, with ...

drive technical architecture, system design, and delivery using modern AWS cloud infrastructure and microservice design. Key Responsibilities Lead technical design, architecture, and high-quality C# code delivery. Build scalable, real-time microservices and RESTful Web APIs. Maintain high test coverage (NUnit/Moq) and automated CI/CD pipelines. Collaborate … with partner tech teams to scale platform performance. Required Skills Core Tech: Strong C#, ASP.NET/.NET Core, Web APIs. Messaging: Hands-on experience with RabbitMQ (or TIBCO/SignalR). Cloud & Tools: AWS (EC2) , Docker, Git/TeamCity. Concepts: Multithreading, async programming, SQL/NoSQL, automated testing. Nice ...

document management, workflow automation and knowledge management problems A track record of leading and mentoring engineers Strong experience in a modern object-oriented language (C# or Java) Deep knowledge of software design patterns, clean code and clean architecture Experience building REST APIs and working with messaging systems Confidence defining data … best practice What you'll be doing Working in a lean Agile team using a scaled Scrum framework Building back-end services in C#/ASP.NET Core, with front-end work in TypeScript/React, ASP.NET MVC or Blazor Building cloud-first applications with strong unit test coverage, continuous delivery ...

Sales, Customer Service, Contact Centre, Customer Insights Front end development experience using HTML, CSS, JavaScript, jQuery, Liquid Template Server-side development experience preferably using C#/.Net/.Net Core Integration experience with REST APIs/custom connectors Azure integration services knowledge ALM and CI/CD experience Comprehensive understanding … Functional Requirements Strong customer-facing skills Relevant MS Certifications Desirable Copilot Studio and/or Foundry C#/JavaScript Enterprise delivery experience Experience of delivering with the Success by Design framework Experience with UI/UX design Experience building applications with accessibility in mind Experience with the wider Microsoft ...

learning where required. Programming, Software & Network Principles xp with SRE and Azure DevOps Ability to script (Bash/PowerShell, Azure CLI), code (Python, C#, Java), query (SQL, Kusto query language) coupled with xp with software versioning control systems (e.g., GitHub) and CI/CD systems. Programming xp in the following … with transferrable skills gained through software development or any other technology bkground will also be considered. Proficiency in programming languages such as Python, Java, C#, or similar preferred. xp operating in highly regulated industry, e.g., Financial Services advantageous. Understanding of cybersecurity principles, global financial services business models, regional compliance regulations ...

across time zones. The role requires a university degree in a highly analytical field, 3+ years in actuarial/modelling/software, and strong C# and OO programming skills. #J-18808-Ljbffr ...

join a high-performing technology team responsible for architecting, developing, and enhancing sophisticated trading and research systems. This role would suit a strong C#/.NET engineer who enjoys solving complex technical problems and wants to have genuine influence over the architecture and direction of the systems they build. … engineering best practices, while working closely with researchers, traders and other technical specialists. Key Responsibilities Design, develop and maintain high-performance applications using C# and modern .NET Take ownership of significant software development projects from initial design through to production Contribute to and lead architectural and technical design decisions Design ...

drive architecture and design for a high-throughput, low-latency transaction processing engine hosted on AWS. Key Responsibilities Lead technical design, system architecture, and C# code delivery. Build low-latency, real-time microservices and RESTful Web APIs. Implement multithreaded and asynchronous processing for high-volume data streams. Maintain high test … coverage (NUnit/Moq) and automated CI/CD pipelines. Requirements Core Tech: Strong C#, ASP.NET/.NET Core, Web APIs. Real-Time Data: Solid experience in multithreading , asynchronous programming , and low-latency/high-throughput processing. Messaging: Hands-on experience with RabbitMQ (or TIBCO/SignalR). Cloud & Tools ...

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 ...

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 ...

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# .NET. The Client would like meet candidates … 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, well ...

Ready to lead the reliability, scalability, and operational excellence of mission-critical platforms while shaping the future of Site Reliability Engineering? Would you like to mentor high-performing engineers, drive cloud modernization, and influence enterprise ...

Senior Full Stack Lead Engineer ReactJS, TypeScript, JavaScript, C#/.NET Banking London This is a new and exclusive opportunity for a Senior Full Stack Lead Engineer/software developer with expertise across ReactJS, TypeScript, JavaScript, C#/.NET to join this investment Banking client as they expand their full … stack software developer team in London city. Role details Title: Senior Full Stack Lead Engineer Technical stack: ReactJS, TypeScript, JavaScript, C#/.NET Employer: investment Banking Location: London City and home working hybrid 50/50% Permanent role, salary £90,000- £130,000 plus bonus This is a new opportunity ...

Nexus Jobs Limited is recruiting a C# .NET Software Developer for our client, a niche boutique broker specialising in FX, based in London. You will work on trading systems with FX and Fixed Income components, and collaborate closely with traders to deliver robust software. The role requires 3–5 years … experience with C# .NET, ASP.NET Core MVC and SQL Server, plus an understanding of FX instruments and possibly FIX protocol. #J-18808-Ljbffr ...

wider IT department. Core Technology Environment Java 25 server-side applications, supported by Python for simpler scripts. React web applications, SQL Server databases and C# native front ends. KDB time-series storage and analysis. Informatica UltraMessaging and Chronicle-based infrastructure. Influx and Grafana for system instrumentation and monitoring. Linux servers … technical discipline. Desirable experience: React, which is a key technology for the team. SQL databases and queries, including Microsoft SQL Server, Oracle or Sybase. C# GUI development. Python scripting or programming, potentially using libraries such as SciPy. KDB querying, management or maintenance. Chronicle, Influx or Grafana. Financial services experience ...

Agile team of 8 within a technology function of around 80 people, taking a hands-on coding lead with mentoring responsibilities. The position requires C#, Azure, SQL, and Angular expertise, plus mentoring and UK work experience. Familiarity with AI coding tools is a bonus. #J-18808-Ljbffr ...

C# Developer/Software Engineer (WPF) London to £125k Do you have strong C# and WPF UI development skills within Front Office trading environments? You could be progressing your career in a senior, hands-on C# Developer at the Investment Management arm of a global bank. As a C# Developer … your focus will be on developing sophisticated front office user interfaces using C# and WPF, supporting real-time, high-performance trading across primarily equities and options. You'll work closely with traders to understand requirements, translate them into robust technical solutions and continually enhance the platform. You'll be part ...

Mentor engineers and graduates; set quality and engineering standards through code review and design guidance What we're looking for Senior Software Engineering experience – C#/Python/SQL Strong technical depth in C# and full‐stack debugging across distributed systems Domain knowledge of investment operations, asset management workflows ...

Backend Software Engineer/Developer (C# .Net AWS Python) London/WFH to £100k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression ...

ICAP Group Services Ltd in London is seeking a skilled Full Stack C# Engineer to design, develop, and maintain scalable applications powering critical business functions. You will collaborate with product owners, architects, and engineers to implement microservices, APIs, and cloud-based solutions in a fast-paced, security-minded environment. … role requires strong TypeScript/React frontend skills, solid C# back-end experience with SOLID principles, and a good grasp of RESTful APIs, CI/CD, #J-18808-Ljbffr ...

lifecycle. Break complex tasks into clear specs, directing AI agents to handle heavy code generation while protecting system architecture. Write clean, maintainable code using C#, TypeScript, and modern cloud platforms. Shape Product and Technical Strategy: Work with bank stakeholders to understand challenges, refine products, and turn business needs into technical … expertise in AI-assisted software engineering, treating AI as a direct force multiplier. Strong background in modern cloud architectures, serverless, and microservices. Proficiency in C# and modern web stacks (TypeScript/Node.js). Experience building relationships with product owners to translate vague business needs into real tech execution. Comfortable with ...