126 to 150 of 232 C# Jobs in the City of London

C# Developer – Contract (Hybrid, London) Rate: £415 per day (Umbrella only) Location: London – Hybrid, minimum 3 days a week onsite near Canary Wharf Contract: Initial 6 months with extensions likely We’re looking for an experienced C# Developer to join a busy development team within a leading financial environment. The role involves designing, developing and supporting a range of business … platform. You’ll be working closely with database and infrastructure teams, supporting both new and existing systems in a fast-paced environment. Key Responsibilities: Develop and maintain applications using C# and the .NET Framework Support and enhance existing Windows and web-based systems Work with SQL Server and Oracle databases, writing efficient T-SQL and PL/SQL queries Follow … release procedures to ensure system stability Troubleshoot application, database and environment issues across multiple teams Provide occasional out-of-hours or weekend support when needed Skills and Experience: Strong C#/.NET development background Good understanding of object-oriented programming Experience with SQL Server or Oracle databases Familiarity with IIS and Windows application development Excellent communication and problem-solving skills More ❯

.NET Developer, C#, .NET 9, Angular 19, Web API 2 - London (Tech stack: .NET Developer, .NET 9, C#, Web API 2, Entity Framework, Microservices, Azure, Programmer, Full Stack Engineer, Architect, .NET Developer) Have you ever thought about getting from London to Edinburgh in 30 minutes? My client, a world leader in aerospace technology, and has decided to undertake research into … and capture information from the high speed tests that they are running on a daily basis. .NET Developer applicants should have knowledge of: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. They will provide training into: .NET 9, Web API 2, Entity Framework, Microservices, Azure, JavaScript, Angular 19, Bootstrap, Agile and MongoDB. All positions come with the following More ❯

Job Title/Corporate Title: C# .NET Full Stack Developer Contract: £750 - £950/day (Inside IR35) Location: London (Hybrid) You’ll be joining a major financial services organisation to design, build, and support Full Stack C# .NET applications used across core regulatory and reporting systems. Your mission — develop, integrate, and enhance enterprise-grade software that underpins finance and regulatory … reporting processes. You’ll work across the stack using C#, .NET, SQL Server, and Oracle, collaborating with DevOps and cloud teams to deliver high-performance, resilient solutions in a highly regulated environment. This is a hands-on development role for someone who knows how to turn business requirements into robust, scalable applications — and can code, design, and integrate at a … CI/CD pipelines. Work closely with business and technical teams to ensure accurate, compliant delivery. Participate in code reviews and continuous improvement initiatives. What you’ll need: Proven C# and .NET development expertise (Framework & .NET Core). Strong understanding of object-oriented programming, design principles, and best practices. Solid experience with SQL Server and Oracle databases. Experience in financial More ❯

.NET Developer (Tech stack: .NET Developer, .NET 9, C#, Web API 2, Entity Framework, Microservices, Azure, Programmer, Full Stack Engineer, Architect, .NET Developer)In just over 5 years our client has established themselves as the world's leading internet subscription service for enjoying films and TV programmes. They currently have over 15 million streaming members across the UK, Europe and … North America and have plans to double in size over the next 12 months. We are seeking several .NET Developer to work on several complex Greenfield .NET/C# software development projects which will be critical to the future success of the business. .NET Developer candidates should have a sound understanding of object orientated (OO) development and a skill that … that includes: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client can provide training into: .NET 9, Web API 2, Entity Framework, Microservices, Azure, JavaScript, Angular 19, Bootstrap, Agile and MongoDB. This is an excellent opportunity for a .NET Developer to working within a challenging supportive environment. Top performers can expect to receive their first promotion (and More ❯

.NET Developer, .NET 9 - Social Networking Site - London (Tech stack: .NET Developer, .NET 9, C#, Web API 2, Entity Framework, Microservices, Azure, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is the world's largest social-networking web site and they have ambitions to become the biggest web site in the world! Their global presence currently stretches across … see another 10 countries added to this list as well as their workforce increasing by 100% in size. Underpinning this success is their hip and cutting-edge .NET/C# technology platform. We are seeking several .NET Developer to work on the development of revolutionary new features that will draw users to their web site for longer periods of time. … .NET Developer applicants should have a skill set that encompasses: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. We are keen to hear from .NET Developer candidates with a strong understanding object orientated (OO) development and the full software development life cycle. This is a rare opportunity to join a truly exciting global brand. Our client offers over More ❯

.NET Developer (Tech stack: .NET Developer, .NET 9, C#, Blazor, Azure, JavaScript, HTML5, CSS3, Agile, Programmer, Full Stack Engineer, Architect, .NET Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage, and delight customers by delivering inbound experiences that are relevant, helpful, and personalized. Having recently launched in the … UK, they looking to hire .NET Developer (ASP.NET, C#) to become a part of their ever growing family. They believe that individual .NET Developer are in the best position to make decisions about what should be created, and how it should be built. Within their setup those decisions are made by small teams of three or four .NET Developer who … solved with technology and experience, not process, and that mistakes are a normal part of learning. .NET Developer applicants should be experienced in: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. You will receive training in all aspects of: .NET 9, Blazor, EF Core, Azure, JavaScript, HTML5, CSS3, Agile, TDD, BDD, Azure SQL and MongoDB. At the centre More ❯

.NET Developer, .NET 9, C# - Computer Gaming Company - London (Tech stack: .NET Developer, .NET 9, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Having sold over 100 million games consoles and over 500 million games over the last decade, my client is undoubtedly the world's most recognised computer gaming brand. We … business area and the opportunity to work on the full project life cycle. .NET Developer applicants should have a skill set that encompasses: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client can provide with exposure to: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. This More ❯

.NET Developer (Tech stack: .NET Developer, .NET 9, C#, Blazor, Azure, JavaScript, HTML5, CSS3, Agile, Programmer, Full Stack Engineer, Architect, .NET Developer) Established in 1962 our client is a leading global media company; its commercial arm comprises of some of the largest television channels across the Globe and market leading cinema screen advertising businesses. We are seeking several .NET Developer … online application that will allow its viewers to screen and download its hugely popular TV shows. .NET Developer applicants should be experienced in: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. You should have a strong grasp of object orientated (OO) development principles. Our client can provide you with industry recognized training in: .NET 9, Blazor, EF Core More ❯

.NET Developer (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is a global video technology company with a strong presence in 17 countries. Using cutting edge technologies they help their clients join the dots on Facebook, YouTube and the social web. Their mission … of revolutionary web based software applications. We are keen to hear from .NET Developer candidates with a good grasp of technologies that include: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client will give you the opportunity to work on enterprise level software development projects and training into: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading More ❯

.NET Developer - Fastest-Growing Internet Co Ever - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is changing the way merchants and consumers connect with each other worldwide, and the change has barely started. In 2024, they were the fastest-growing internet company … are looking for .NET Developer to work on the development of complex Greenfield software applications. .NET Developer applicants should have detailed knowledge of: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client can provide you with training into: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. More ❯

.NET Developer - Fastest Growing Social Media Firm - London (Tech stack: .NET Developer, .NET 9, C#, Web API 2, Entity Framework, Microservices, Azure, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is on a quest to transform how people discover, view and share content by combining the beauty and ease of print with the power of social media. Their key … new offices in the UK and are on the lookout for the very best .NET Developer. .NET Developer applicants should be experienced in: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. You should have a strong grasp of object orientated (OO) development principles. Our client can provide you with industry recognized training in: .NET 9, Web API More ❯

play a key role in architecting and developing scalable, high-performance web applications that bring complex data to life. Working across both frontend (React, TypeScript) and backend (.NET Core, C#) technologies, you’ll collaborate with product, design, and data science teams to create seamless, intelligent solutions that define the future of shipping analytics. This is a hands-on engineering role … What You’ll Bring 5+ years of experience building large-scale, production-grade web applications. Strong proficiency with React, TypeScript/JavaScript, HTML, and CSS . Proven experience with C#, .NET Core , and SQL-based databases . Understanding of Design Patterns and SOLID principles . Experience designing and consuming RESTful APIs . Familiarity with Azure or other cloud platforms and More ❯

C# Developer (.Net) Location: Canary Wharf Hybrid: 3 days onsite per week Rate: £415 per day (Inside IR35) Duration: 6 months initial contract with potential extension up to 2 years with a Permanent conversion option Positions Available: 13 positions Industry: Financial services Interview Process: 2 rounds of interview - Face-to-face interview only, and Technical assessment - Home assignment to be … behalf of our client, a leading financial services company, within their Business Intelligence development team. The role focuses on developing and supporting business applications using the MS .NET platform (C#, Visual Studio) and working with both Oracle and SQL Server databases. You’ll be joining a collaborative team that delivers key business solutions across various environments. Key Responsibilities: Design, develop … and maintain business applications using Visual C# .NET with Oracle and SQL Server databases Provide ongoing support for existing C# and .NET applications, including troubleshooting and implementing solutions Write and optimise T-SQL and PL/SQL scripts for data analysis and reporting requirements Collaborate with Database Administrators, Technical Support, and Infrastructure teams across London and New York offices Follow More ❯

.NET Developer - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) After 15 years' experience in the fashion industry, our client has a mission to change the way people find clothes they love by combining technology with the personal touch of seasoned style experts. Our … in accordance with each customers' preselected unique fashion tastes. To achieve this, our client is looking for .NET Developer with excellent experience of: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. There are opportunities for training into technologies such as: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and More ❯

.NET Developer - Global Sports Company - London (Tech stack: .NET Developer, .NET 9, C#, Blazor, Azure, JavaScript, HTML5, CSS3, Agile, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is a global sports brand that operates in over 115 countries worldwide. They are the biggest sports company in Europe and the second largest on the planet! Over the past 30 years … resource will be at your disposal to help you achieve this. We are looking for .NET Developer that have a strong background in .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Training will be provided into: .NET 9, Blazor, EF Core, Azure, JavaScript, HTML5, CSS3, Agile, TDD, BDD, Azure SQL and MongoDB. All positions come with the following More ❯

a permanent basis in London. There are multiple roles across risk and FX within this company and the ideal candidate will come from a financial services company. Key Skills: C# OOP Up to £130K on the base plus market leading package More ❯

will also interact with middle and back office. Main duties: Gather user requirements and defining specifications Develop, implement and deliver solutions Support, Bug fix & Document Required experience .Net platform, C# language, WPF, angular Usual architectural pattern Energy Trading business (oil, gas, power), commodities also welcome (metals More ❯

Support the development lifecycle and assist with deployments Share product expertise with internal teams Skills & Experience Background in the software industry, ideally with client-facing experience Strong SQL knowledge (C# a bonus) Excellent communication skills and ability to explain technical concepts clearly Understanding of the software development lifecycle and system integrations If youre a technically minded communicator who enjoys variety More ❯

where you will work directly alongside the founding team to help shape the core technology and company culture. About you: 3+ years of Software Development experience in Python, Java, C#, C++ Experience working on an end-to-end development cycle Proven ability to build something from the ground up/experience in shipping features very quickly Understanding of complex design More ❯

of testing, and analysis of data for improvement Collaborate with cross-functional teams of hardware, software, embedded and electronic engineers. Skills: Software scripting and Automation experience using Python, C++, C# Experience in generating and scripting algorithms for AI/ML applications, as well as Metaheuristic optimisation. Understanding of cloud-based environments and data pipelines. Degree in either Computer Science, Electrical More ❯

.NET Developer, .NET 9, C# - Break Into Banking - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Are you stuck in a catch 22 situation i.e. want to get into the financial services arena but your lack of experience within the industry is preventing you … break! Our client is the world's most prestigious investment bank. We are seeking five .NET Developer to work on the design and development of a Greenfield .NET/C# banking application. .NET Developer applicants should have a skill set that encompasses some or all of the following (full training will be provided to fill any gaps in your skill … and Azure SQL. No previous banking experience is required. This is a once in a lifetime opportunity to get involved in one of the most exciting Greenfield .NET/C# projects in the UK. My client is looking to secure and retain the services of the best .NET Developer candidates on the market place; as such they are offering a More ❯

Senior Software Engineer | Legacy to Modern | C#, .Net | SaaS Data A fast-growing SaaS business is investing heavily in its tech platform and building out a senior engineering hub in London. They’re on the lookout for a Senior Software Engineer to help drive modernisation, set technical direction, and mentor squads as they scale. This is a senior, hands-on … and fit for the future. Expect to spend plenty of time coding, alongside leading migrations and leading/mentoring 4 engineers. You will have complete autonomy for all things C# .NET in the business, including decision making on strategy around the direction of the products, the projects, leading the team and liaising with external consultancies etc. What you’ll be … doing: Design and build complex apps with C# and .NET Core/Framework Lead migrations from Web Forms/ASMX to modern stacks (.NET Core, MVC, REST APIs) Contribute to the technical roadmap and influence best practices across squads Partner with QA, Product, and DevOps to deliver reliable features in agile sprints Implement and fine-tune CI/CD (TeamCity More ❯

to-end web applications and APIs used by thousands across secure environments. Ship modern TypeScript apps with React (Vite/Material-UI) and backends in Node.js/Express (bonus: C#/.NET or Python/Django ). Design and document clean REST/JSON interfaces; test with Postman and automate regression suites. Own CI/CD pipelines and Docker -based … platform, and security teams to meet operational and compliance requirements. The toolkit you’ll use Frontend: TypeScript, React.js, Vite, Material-UI, HTML5, CSS Backend: Node.js, Express.js (nice-to-have: C#/.NET, Python/Django) APIs & Data: REST/JSON, SQL, PostgreSQL/Postgres , databases DevOps: CI/CD, Docker , containerisation, Ubuntu/Linux, AWS , Serverless, CDK/CDKTF , Ansible … . Security Clearance: Active SC or DV (must be current). Nice-to-haves Military background (RAF/Army/Navy) or delivery in defence, aerospace, or government . C#/.NET , Python/Django , Material-UI , Vite , PostgreSQL tuning. GenAI/LLM experience (e.g., AWS Bedrock , prompts/guardrails, retrieval). Integrations with hardware/peripherals (kiosks, scanners, IoT More ❯

impact, we'd love to hear from you. What you’ll do Provide technical leadership and direction across multiple projects. Design, architect, and implement high-performance, scalable solutions in C#/.NET. Ensure architectural consistency and modern engineering best practices. Collaborate cross-functionally with Sales, Product, Research, QA, and Professional Services. Mentor and coach developers, continuously raising the technical bar. … and QA engineers. What you’ll bring Bachelor’s degree in Computer Science or related STEM field (or equivalent experience). 10+ years of hands-on experience developing with C#/.NET in production environments. Strong command of SQL and relational database design. Deep understanding of software engineering principles and architecture patterns. Excellent written and verbal communication skills. Experience mentoring More ❯

of old and new our core systems range from a WinForms app to an in-house distributed data processing pipeline. Some of the core technologies that we utilise are: C# .Net Web Services SQL Server (Including T-SQL) Angular (with Typescript) RabbitMQ/Kafka Various Azure Features (App Services, VMs, Config etc...) Git Snowflake Nuget (Producing and Consuming)Azure DevOps … developments is maintained. BACKGROUND/EXPERIENCE Knowledge of the design, development and implementation of software solutions. Full stack development experience in particular the Microsoft stack ,including .NET languages e.g. C# and a strong understanding of OO principles. Knowledge of relational database systems and SQL. Experience working with APIs. COMPETENCIES AND PERSONAL SKILLS Questioning, analytic skills with attention to detail. Solution More ❯