151 to 175 of 232 C# Jobs in the City of London

Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 9, C#, J2EE, Agile, TDD, BDD, Graduate/Junior 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 Graduate/Junior Developer (Python, Linux, C#, Java)) to become a part of their ever-growing family. They believe that individual developers 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 … learning. These roles would be suitable Graduate/Junior Developer who have recently graduated from university and have a basic understanding of any of the following technologies: Python, Linux, C# or Java; which might have been acquired as part of your degree course or through a placement year in industry. At the center of our client's culture is freedom More ❯

across complex systems. You’ll play a key role in ensuring scalability, stability, and reliability of business-critical application Key requirements: Proven experience in UI automation using Selenium with C#/.NET. Strong background in load and performance testing with JMeter. Skilled in designing, executing, and analyzing performance test cases. Proficient in Zephyr for Jira for test management and defect More ❯

system testing and integration + Expertise in burst-mode transceiver testing. + Good understanding of equalisation methods (CTLE, FFE, DFE) to improve high-speed link performance. + Python, C++, C# + High-speed PCB design Full details are available. Please don't hesitate to get in touch with me to learn more. More ❯

scripts, and exit reports. Familiarity with Agile testing methodologies. Solid defect management and test documentation skills. Hands-on experience testing Digital Experience Platforms (e.g., Sitecore). Working knowledge of C#, Selenium, SpecFlow (Gherkin), XUnit/NUnit, Git, Visual Studio. Experience converting manual tests to automated scripts. Services offered by Computappoint Limited are those of an Employment Business and/or More ❯

with direct ownership of RFx processes and multiple successful £5m+ bids Broad architecture experience across cloud platforms, application integration, and modernisation strategies Strong technical foundation in backend engineering (Java, C#) and modern application development practices Consultative selling expertise with ability to shape client requirements and drive solution differentiation Exceptional presentation and stakeholder management skills - comfortable influencing procurement committees and technical More ❯

Lead .NET Developer | 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 .NET Specialist to help drive modernisation, set technical direction, and mentor squads as they scale. This isn’t a “heads down coding … for the future. Expect to spend plenty of time coding, alongside leading migrations and mentoring engineers. What you’ll be doing: Own design + build of complex apps with C# and .NET Core/Framework Lead migrations from Web Forms/ASMX to modern stacks (.NET Core, MVC, REST APIs) Influence the technical roadmap across multiple squads Partner with QA … across IIS + AWS Mentor developers through code reviews and architectural guidance Optimise SQL/T-SQL performance for production systems What we’re looking for: Strong background in C# and modern .NET Core Comfortable balancing legacy upkeep with platform modernisation Confident with IIS, AWS, TeamCity, Octopus Deploy, SQL Server Bonus points for exposure to Angular or Telerik libraries Experience More ❯

3D smart-city application. Collaborate with surveyors, architects, and engineers to transform complex data into immersive visualisations and scalable tools . Work with modern technologies such as Unity 2022+, C#, PostgreSQL/PostGIS, Azure DevOps, and Cesium for Unity , delivering solutions that support smarter, more sustainable cities. The Role This position offers the opportunity to design and develop advanced applications … that drive urban innovation. Responsibilities include: Designing and developing backend, desktop, and web applications. Building and maintaining RESTful APIs and microservices. Writing clean, efficient, and scalable code in Unity, C#, JavaScript, and TypeScript. Developing spatial databases and optimised queries using PostgreSQL/PostGIS. Supporting full testing cycles, product upgrades, and change management processes. Collaborating with cross-functional teams to deliver … robust, future-ready solutions. What They’re Looking For Strong Unity development experience, including URP/HDRP pipelines, Addressables, and Job System . Skills in C# (.NET 6/8), Cesium for Unity, PostgreSQL/PostGIS, and Entity Framework Core . Familiarity with modern frontend frameworks such as React with TypeScript . Strong Agile, DevOps, and CI/CD experience. More ❯

+ Bonus + Hybrid Location: Central London (Hybrid: 2 days in office) Salary: £65,000–£80,000 + performance bonus + excellent benefits Tech: .NET 6/7, C#, AWS, Microservices, REST APIs, SQL, CI/CD 🚀 The Opportunity We’re partnering with a highly successful fast-growing SaaS brand based in Central London who are looking for a talented … and genuine opportunities for growth. 🧠 The Role As part of a cross-functional engineering team, you’ll: Develop and maintain high-quality backend systems using .NET 6/7 (C#) Design and build AWS-based microservices and scalable APIs Collaborate closely with product, DevOps, and front-end teams Contribute to architectural decisions and technology roadmaps Ensure reliability and performance through … testing and CI/CD practices 🔧 About You To be successful, you’ll need: 3+ years’ commercial experience in software engineering Strong skills in C#/.NET Core/.NET 6+ Hands-on experience with AWS (Lambda, ECS, S3, DynamoDB, etc.) Experience working with REST APIs, SQL/NoSQL databases, and microservices Familiarity with CI/CD pipelines (GitHub Actions More ❯

thrives in a high-trust, collaborative environment. WHAT YOU WILL DO Develop and maintain back-end services, APIs, and integrations for the Connect platform Write clean, efficient, and testable C# code that performs at scale Contribute to the design and evolution of Connect’s architecture, working closely with architects and senior engineers Collaborate with front-end developers, QA, and product … tests within our CI/CD pipeline Contribute to technical planning, estimation, and documentation Continuously improve our development processes and engineering standards WHAT YOU’LL BRING Strong experience in C# and the .NET ecosystem Experience building scalable, secure applications in Azure (Service Fabric, Cosmos DB, Azure Functions, etc.) Solid understanding of modern back-end architecture – including microservices, APIs, and messaging … able to work well across disciplines Bonus: experience with identity systems (e.g. Microsoft Entra ID/Azure AD), SSO, or HRIS integration OUR TECH STACK Frontend: React, JavaScript Backend: C#, .Net, Azure Service Fabric, Kubernetes Infrastructure: Azure, Service Fabric, Cosmos DB WHY COCENTRIC Be a key part of a product that’s transforming how the frontline workforce connects Help shape More ❯

services ideally, or another regulated environment Strong knowledge of SRE principles, incident management, monitoring, and performance tuning Hands-on technical skills across a broad range of technologies, including: Microsoft: C#, VB, .NET Core, Azure, SQL Server, IIS, Windows Server Web: React, RESTful APIs, Docker, Azure Kubernetes Service (AKS) Tools: CI/CD pipelines (Azure DevOps), Dynatrace, Git, Okta, Apigee Excellent … communication skills and the ability to work effectively across cross-functional teams Desirable: Familiarity with legacy VB/C# applications in a modernised environment Experience in automation/scripting (PowerShell, Bash) Background in financial services applications or products Location: London (hybrid working - 2/3 days a week in the office) This is a fantastic opportunity to join a collaborative More ❯

services ideally, or another regulated environment Strong knowledge of SRE principles, incident management, monitoring, and performance tuning Hands-on technical skills across a broad range of technologies, including: Microsoft: C#, VB, .NET Core, Azure, SQL Server, IIS, Windows Server Web: React, RESTful APIs, Docker, Azure Kubernetes Service (AKS) Tools: CI/CD pipelines (Azure DevOps), Dynatrace, Git, Okta, Apigee Excellent … communication skills and the ability to work effectively across cross-functional teams Desirable: Familiarity with legacy VB/C# applications in a modernised environment Experience in automation/scripting (PowerShell, Bash) Background in financial services applications or products Location: London (hybrid working - 2/3 days a week in the office) This is a fantastic opportunity to join a collaborative More ❯

Junior .NET Developer - Online Film Rental Company - London (Tech stack: Junior .NET Developer, .NET 9, C#, Web API 2, Entity Framework, Microservices, Azure, Programmer, Full Stack Engineer, Architect, Junior .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 … North America and have plans to double in size over the next 12 months. We are seeking several Junior .NET Developer to work on several complex Greenfield .NET/C# software development projects which will be critical to the future success of the business. Junior .NET Developer candidates should have a sound understanding of object orientated (OO) development and a More ❯

Exciting opportunity for a Senior .Net C# Software Engineer with a background in front office trading to join a global Commodities Trading Company. You will be working in a front office trading environment dealing directly with business users & stakeholders. The role involves development & support of the existing platform for managing market and fundamental data across capture, forecasting and visualisation for … Power, Gas and Weather. Key Requirements - 15 year+ experience - Strong .Net/C# - Strong SQL Server - Strong Azure Cloud experience Ideally, you will have worked with modelling of commodities, ideally energy (power, gas, environmental products). This needs combining with a positive attitude and an ability to work within a large, globally dispersed project team in a multi-cultural environment. More ❯

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 ideally with some understanding Trading Floor projects to include Fixed … to external reporting/tradeflow and pricing APIs. Maintaining the companys daily operation on the existing platforms. Essential skills :- Minimum 3 to 5 years experience of Microsoft web technologies(C#, ASP.NET Core MVC ) Relational database experience (SQL Server) Proactively able to build relationships with stakeholders:- sales, brokers, middle office, external vendors. Ability to produce clean, well-written, fully tested production More ❯

Proven experience in DocuSign CLM system administration within an enterprise environment. Strong background in creating and maintaining advanced DocuSign CLM workflows and document generation processes. Hands-on experience with C# snippet coding within DocuSign workflows. In-depth understanding of DocuSign CLM security models, access management, and privacy/security best practices. Demonstrated experience configuring integrations with third-party systems such More ❯

Tech Lead – Azure/.NET Remote/London (occasional office visits) circa £95 - 100k + 20% bonus + excellent benefits Azure, C#, .NET, API A Lead Software Engineer with strong experience in Azure and C#/.NET is required by a global, prestigious luxury brand. This is a hands-on leadership role where you will translate architectural vision into high … DevOps, CI/CD, and automation to ensure fast, reliable, and secure releases. Evaluate and implement emerging technologies to enhance scalability, monitoring, and performance. Key Requirements: Extensive experience in C#, .NET, SQL, and enterprise-grade API design. Strong technical expertise across Azure SQL, Cosmos DB, Service Bus, Function Apps, APIM, Front Door, Auth0, and WebSockets. Proven ability to design APIs More ❯

Role Type : Perm Title – Junior C# Engineer Client – Established Financial Institution Salary - Up to £80,000 P/A + Bonus Location – London/Hybrid My client is a well-established and successful tech house working in the finance sector who are looking a talented Junior C# Developer, with outstanding technical and communication skills to join their existing team of … with some of the best technologists out there, one some of the most up to date tech in the industry, on a greenfields project! Requirements: Strong experience working with C#/.Net Experience working with Cloud Technologies (Azure preferred) Experience working with Typescript - Angular or React Strong SQL experience Finance experience a plus! Strong Communication skills with a drive to More ❯

Senior Software Developer London – Twice a week in the office £70,000-£90,000 C#/Python/Azure I’m currently working for a well-established tech consultancy business of over 70 years who are based in Central London and looking for a Senior Software Developer , paying up to £90,000 and requiring office working of twice a week. … across their 3 offices and in-role you will be working on the continued development of one of their key platforms. You will mainly work on the backend with C# (and ideally Python), developing new features in an Agile environment while also working extensively with Azure. You’ll work collaboratively with different teams across the business and also get the … they really encourage across their tech teams! The office is based in Central London, and they are looking for office working of 2 days a week! Technical Requirements: Strong C#/.Net experience – they use .Net 8 on this project. Ideally have worked with Python which is used across the business. Good understanding of the Azure toolset – Functions, Services, SQL More ❯

Contract Snr .NET Engineer - C#, SQL, React, AWS/Azure - £550/day (OUTSIDE IR35) - Hybrid I’m partnering with an ambitious tech startup that’s transforming how businesses connect and trade globally. Their AI-driven B2B platform is redefining the way companies manage payments, logistics, and supply chains — and they’re looking for a Contract Snr .NET Engineer to … a team that values innovation, agility, and real-world problem-solving. What You’ll Bring Experience as a software engineer, ideally in fast-paced tech environments. Strong skills in C#, .NET Core, React, AWS/Azure, and database systems (SQL/NoSQL). One or more of Aurora DB, CosmoDB, MongoDB, Redis, Kafka A problem-solving mindset with a focus … and champion high-quality engineering practices. Contribute to architectural discussions and help define technical direction. Mentor junior engineers and share best practices across the team. Contract Snr .NET Engineer - C#, SQL, React, AWS/Azure - £550/day (OUTSIDE IR35) - Hybrid More ❯

that serve both public-facing and internal users. Key Responsibilities Enhance and modernize large .NET systems for performance, reliability, and scalability Lead architecture and development of backend services using C#, ASP.NET, .NET Core Automate infrastructure, CI/CD pipelines, and cloud operations (AWS/Azure) Promote engineering best practices, security, and observability Mentor engineers and foster a culture of continuous … improvement Contribute to technology direction, including adoption of tools like Go and Python What We’re Looking For Deep expertise in C#, .NET Core, ASP.NET Cloud experience with AWS (Lambda, DynamoDB) or Azure + DevOps Proficiency with IaC tools like Terraform Strong grasp of modern dev methodologies and design patterns Exposure to containerization and CI/CD tooling Bonus: Familiarity More ❯

successful Senior Software Developer will join a small but extremely talented development team. You will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield projects and allow you to make your own mark on the development process early on. You will be … The company operate within the sports trading industry so any candidate applying must be happy to work in this area. This is predominantly an office-based role. Skills required: C# Worked with the latest version of the .NET platform Database experience - SQL Server, oracle or equivalent Reporting/Analytic knowledge Angular, TypeScript Excellent communication skills both written and verbal High More ❯

London. The successful Software Developer will join a extremely talented development team and you will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield projects and allow you to make your own mark on the development process early on.You will be given … in the industry, or experience within it. This is predominantly an office-based role. As well as very competitive salaries, our client offers a comprehensive benefits package. Skills required: C# Worked with the latest version of the .NET platform Database experience - SQL Server WPF Angular, TypeScript Excellent communication skills both written and verbal Knowledge of working with trading platforms Modelling More ❯

at enterprise scale, think architecturally, and deliver under pressure in complex technical environments. Tech Stack & Environment You’ll work across a diverse range of modern technologies, including: Core languages: C#, Python, Rust Front end: JavaScript/TypeScript/Angular/RX JS Infrastructure: Kubernetes, containers, DevOps, CI/CD Emerging tech: WebAssembly, AI integration, and AI frameworks Systems: Cross-platform … environments This is a genuine technologist’s role — building critical software that combines engineering precision, scalability, and innovation. What We’re Looking For Very strong expertise in one of C#, Python or Java , ideally with working knowledge of another. Rust very desirable Proven experience designing and developing complex, distributed, real-time systems . Deep understanding of software architecture, concurrency, performance More ❯

Microsoft Dynamics 365 CRM, including configuration, customization, and integration capabilities. Strong expertise in integration technologies, frameworks and methods, such as Logic Apps, HTTP, json, AJAX, Oauth2. Proficiency in .NET, C#, JavaScript, and other relevant programming languages. Strong experience of developing plugins for Dynamics Strong experience in using JavaScript and HTML to enhance Dynamics form customization and configuration Demonstrated experience in … or 365. Bachelors degree in Computer Science, Information Technology, or a related field. Strong experience with Microsoft Dynamics 365 (Customer Engagement, Sales, Service, Marketing, etc.). Proficiency in C#, .NET, JavaScript, and TypeScript for Dynamics 365 custom development. Experience with Microsoft Power Platform (Power Apps, Power Automate, Power BI). Hands-on experience with Azure services (Azure Functions, Logic Apps More ❯

.NET Developer, C#, WPF - London (Tech stack: .NET Developer, C#, WPF, Azure SQL, MVVM, Prism, TDD, Agile, Scrum, Kanban, Programmer, Engineer, Architect, .NET Developer) In just over three years our client's community has grown to over 150 million people. They enable their users to share photos and videos on a variety of social networking services such as Facebook and … the development of a revolutionary new product that will have a dramatic impact on the company's growth. .NET Developer applicants should have a skill set that includes: .NET, C#, WPF and SQL Server. Our client will give you the opportunity to work on enterprise level software development projects and provide training into: .NET 9, MongoDB, MVVM, Prism, continuous integration More ❯