476 to 500 of 687 C# Jobs in London

Manager Partner Engineer

Location
Greater London, England, United Kingdom
subscription management platforms, and ERPs. Highly familiar with API-based integration methods. Development experience in frontend and backend web technologies, such as JavaScript, PHP, C# or others. DevOps experience from a technical and customer solutions point of view. Strong communicator who can both explain high-level takeaways and drill into ...

T Level - Digital Support and Security - T Level Examiner - Fully Remote

Hiring Organisation
Pearson
Location
Greater London, United Kingdom
Employment Type
Full Time
Chartered Institute for IT. Be fully conversant with the languages in the specification eg, Python or C based languages such as C, C#, C++, Java Desirable You will be a qualified teacher or hold an equivalent teaching qualification such as Cert Ed, C&G 7404, PTTLLS, CTLLS, DTLLS ...

BIM Modeller - AI Product Platform

Location
Greater London, England, United Kingdom
results without hype Product thinking: turns modelling pain points into clear problem statements the product team can build against Preferred Qualifications pyRevit, Revit API (C#), Grasshopper/Rhino.Inside or Autodesk Platform Services (APS) APIs Hands‐on experience with AI‐for‐AEC tools in generative design, auto‐routing, drawing automation ...

Software Development Engineer, NextGen Security Automation

Location
London, England, United Kingdom
professional software development - Experience in professional, non-internship software development - Experience programming with at least one modern language such as Java, C++, or C# including object-oriented design PREFERRED QUALIFICATIONS - Bachelor's degree in computer science or equivalent - Experience with full software development life cycle, including coding standards, code reviews ...

Team Lead, Platform Engineering

Location
Greater London, England, United Kingdom
production environment. Our working languages are Python, Go, and Rust; we welcome strong engineers from other compiled or object-oriented languages (for example C++, C#, or Java) who are ready to work across our stack as it evolves. Kubernetes at depth: cluster operations, CNI networking, scheduling, and workload management ...

Microsoft Office Add-In Developer (.NET/C#)

Location
Greater London, England, United Kingdom
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, enhancement and 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 be willing and able to travel ...

Backend Engineer (C#/.NET) - Build Scalable APIs

Location
Twickenham, England, United Kingdom
Inforcer Ltd. is seeking a Backend Engineer to design, develop, and optimize the backend systems powering our cybersecurity solutions. You will work with the engineering team to ensure the platform is scalable, secure, and efficient. ...

Full Stack C# Developer | Trading Systems | Contract Inside IR35

Location
Greater London, England, United Kingdom
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 the FX Deal Capture team … 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 architecture ...

Senior .Net Developer

Hiring Organisation
Ascend Consulting
Location
NW7, Mill Hill, Greater London, United Kingdom
Employment Type
Permanent
Salary
£50000 - £85000/annum
Senior .Net Developer, C#/VB.Net, API, SQL, NW London to £85K A Back End Developer is required to join this established financial software house based in North London. They work with some of the leading brands in retail and media, offering financial management systems developed in house by their … small dynamic team of tech professionals. Due to growth a Senior .Net Back End Developer is required with expertise in Visual Basic .NET, C#, SQL Server, and SAP Business One integration. The ideal candidate should have strong skills in RESTful API development, database optimization, and Azure DevOps pipeline management. Knowledge ...

Senior Software Engineer

Location
City Of London, England, United Kingdom
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 Engineer

Location
City Of London, England, United Kingdom
Software Engineer with a strong background in building scalable, high-quality, and high-performance solutions on the Microsoft technology stack (.NET/Blazor/C#). As a Senior Software Engineer, you will be responsible for building and maintaining internal and external-facing web applications in collaboration with international … lead for the Microsoft technology stack. Key Responsibilities: Design, develop, test, support and deploy custom web and mobile applications based on .NET (Blazor, C#), C++. Gather customer software requirements and develop related software applications and programs. Collaborate with architects, engineers, and other team members to design scalable and efficient solutions. ...

.NET Engineer

Location
Greater London, England, United Kingdom
part of everyday life, you’ll feel right at home here. Role overview We are looking for an experienced and highly skilled .NET/C# developer to act as the primary backend engineer for our mobile communication compliance product. The role is suited for someone with a deep understanding … development initiatives within the scope of their role, and to encourage the development of others. Required experience and skills Mandatory Experience engineering software using C#, .NET, ASP.NET, and Microsoft SQL Server. Experience building APIs, web services, and system integrations. Experience building and supporting event-driven distributed systems. Experience with relational ...

Senior Software Developer

Location
City Of London, England, United Kingdom
execute complex features and raise RFC's Our Tech Stack We use GitHub Copilot for agentic development Our services are written in modern C# and Rust We use a fair bit of SQL databases, Kafka, and RabbitMQ We run some services on dedicated hardware and on AWS We use Azure … lead and contribute to technical discussions Skills & Experience Knowledge or experience with financial markets will be highly valued Excellent communication skills Strong knowledge of C#, Rust or any popular programming language Can write efficient, concurrent code Knowledge of how distributed systems work Knowledge of version control systems The Team Personal ...

Senior Engineer (Full-Stack)

Location
City Of London, England, United Kingdom
GraphQL and WebsocketsExperience with CSS pre-processors e.g. TailwindBack-end skillsProficiency in backend programming languages (Typescript and/or other OOP language such as c#/Java)Strong database knowledge (SQL and NoSQL)Proficiency with RESTful APIs and GraphQL APIs and WebsocketsExperience with microservices architectureKnowledge of version control systems … detail, highly organised with a proactive approach.Strong analytical ability and innovative problem solving skills.Software Design Patterns.Source control (Git).Desired:OOP \\ SOLID Principles.Demonstrable experience of C# (.Net 8+) in a professional environment.Contribution to open-source projects.Experience of regulatory driven projects.Knowledge of Financial Markets, Systems and Over the Counter (OTC) products.The Fusion ...

Apps Dev Senior Engineer

Location
Greater London, England, United Kingdom
real-time distribution services. Design and implement clean, modular APIs and event-driven architectures leveraging modern design patterns across Java, Python, or .NET (C#) ecosystems. Ensure ultra-reliable delivery of tick, end-of-day, and historical market data feeds to quantitative pricing libraries and trading applications. Front Office & Desk Alignment … Java (Modern Java, Spring Boot, concurrency, low-latency tuning, GC optimization), OR Python (Modern Python, asynchronous programming, NumPy/Pandas, FastAPI), OR .NET/C# (Modern .NET Core, multi-threading, asynchronous I/O, memory profiling). Distributed Systems & Messaging: Strong experience with enterprise messaging and streaming frameworks (e.g., Apache ...

Software Engineer

Location
London Borough of Islington, England, United Kingdom
server to Aurora Postgres, replaced our Single Sign On service with Auth0 and converted our frontend to React. Our Tech Stack Back-end: C# Data storage: PostgreSQL; Amazon storage including Aurora, DynamoDB, S3 Infrastructure: Terraform and AWS, using Fargate, Lambdas, Step functions, and a lot more! Pipeline: GitHub Actions, TeamCity …/CD, architecture) and can apply them to solve well-defined problems independently and with your team. You are comfortable writing code in C#, Java or Python. Work-with-purpose: You can articulate the value of your own work in larger projects or team-wide goals. You have the space ...

RPA Developer – EK

Location
London Borough of Southwark, England, United Kingdom
UiPath RPA Developer We are currently recruiting for an experienced UiPath RPA Developer to join a team responsible for designing, developing and delivering robotic process automation solutions that improve business efficiency, streamline processes and reduce ...

Senior Microsoft Power Platform and AI Developer

Location
Greater London, England, United Kingdom
This role will be mainly remote but require flexibility to travel to client sites, and our offices based in London, Sheffield, and Bristol. About the role As a Senior Microsoft Power Platform and AI Developer ...

Senior Software Engineer (C# .NET) | London

Location
City Of London, England, United Kingdom
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 ...

Contract C# Developer - Risk - 12 Months - London

Location
Greater London, England, United Kingdom
Senior C# Developer - Risk Technology12-Month Contract | London | Hybrid Working A global investment bank is looking for a Senior C# Developer to join a Risk Technology team responsible for the development and support of business-critical Market and Credit Risk systems. This is a hands-on engineering role working closely … making it particularly well suited to developers who enjoy solving complex problems and improving business-critical systems. Responsibilities Design, develop and enhance applications using C# and .NET Work closely with Risk teams and Front Office users to deliver technology solutions Develop and optimise SQL Server databases and data processes Deliver ...

CONTRACT TO PERMANENT - C# ASP .Net Developer - Music Industry - London

Location
Greater London, England, United Kingdom
CONTRACT TO PERMANENT - C# ASP .Net Developer - Music Industry - London Description CONTRACT TO PERMANENT - C# ASP .Net Developer - Music Industry - London Location: Near Euston and King’s Cross, London PLEASE NOTE: THIS IS AN INITIAL 3-MONTH CONTRACT WITH THE LIKELIHOOD OF CONVERTING TO A PERMANENT POSITION THEREAFTER. The rate … world leader in the provision of software solutions to the Music and Entertainment industry has given rise to the need for an experienced C# Developer of the calibre and potential to progress to technical team lead. The working environment here is very pleasant with a casual dress code, laid back ...

FX Volatility Quant Strategist Real-Time Analytics

Location
Greater London, England, United Kingdom
volatility framework and contribute to a cross-asset analytics platform. The ideal candidate combines strong math background with 5+ years of coding in C++, C#, Rust and Python, plus FX derivatives knowledge and a track record of delivering projects. #J-18808-Ljbffr ...

Bilingual Admin for Software Dev Team — Hybrid London

Location
Greater London, England, United Kingdom
Responsibilities include documentation, system support to users, recruitment onboarding, and contractor administration. You will coordinate timesheets, leave, and visa-related processes while collaborating with C# developers, testers, and DBAs #J-18808-Ljbffr ...

Engineering Team Lead: Drive Scalable, Secure Web Systems

Location
Greater London, England, United Kingdom
that drives business outcomes. You will own end‐to‐end delivery—from discovery through production operations—across frontend and backend platforms (e.g., .NET/C#, Node.js, React). The role demands strong architectural judgment and excellent stakeholder communication. #J-18808-Ljbffr ...

Ultra-Low Latency C++ Engineer — HFT Systems

Location
Greater London, England, United Kingdom
Candidates should have significant experience in C++ development and a strong understanding of CPU architectures. The position is not suitable for those with a C#-only background. The consultancy offers intellectually demanding engineering assignments and doesn’t provide visa sponsorship. #J-18808-Ljbffr ...