1 to 25 of 247 C# Jobs in London

purpose. Your Responsibilities Develop cloud-native applications using Azure Cosmos DB (SQL API, Mongo API). Build reusable libraries and frameworks in C#/.NET or Node.js Establish robust CI/CD pipelines through GitLAB DevOps to streamline delivery and reduce operational overhead. Design efficient data models tailored to NoSQL ...

NoSQL (MongoDB) or SQL databases such as Postgres Experience working with GOV.UK standards or in the UK public sector Exposure to Node.js, Kotlin or C# Experience integrating solutions with LLMs (LangChain, Vercel AI, etc.) Why This Role Stands Out Real impact: contribute to digital services used by millions Huge investment ...

presentation skills. Able to communicate to stakeholders at all levels of the organisation and 3rd parties. Experience working with the following technologies: JavaScript, React, C# .NET, Python, SQL, APIs, Azure, Power Platform, SaaS, PaaS, IaC. Exposure to and understanding of emerging technologies e.g. AI, LLMs, Machine Learning, NLP, MCP etc. ...

familiarity with MongoDB is preferred) or SQL databases such as Postgres Familiarity with web standards, accessibility, and development best practice Bonus: Building microservices in C# Experience building solutions that integrate with LLMs using tools such as Vercel AI, Langchain etc. Using the GOV.UK Design System and using Nunjucks ...

improve system performance and risk analysis Work effectively with global teams across multiple locations Key Requirements Strong hands-on experience in software engineering using C# and .NET Core Solid understanding of CI/CD tools and practices (e.g., Jenkins, TeamCity, Git, Nexus) Experience within enterprise-level or investment banking environments ...

product innovation and new feature development You Will Need 5+ years software engineering experience within modern development environments Strong expertise in .NET Core (C#), Microsoft Azure services, Frontend (ideally Angular) and SQL Server. Experience integrating payment platforms or financial APIs– Experience working with event-driven systems, messaging, and secure authentication ...

solution design and technical strategy. Explore and adopt emerging tech such as AI, ML and automation. Skills & Experience Strong hands-on experience with C#, .NET, JavaScript, HTML/CSS, React . Solid knowledge of Azure PaaS (Functions, Logic Apps, Cosmos DB, App Service, ARM/Bicep). Experience with Azure ...

global financial markets. The Technical Stack You will be working within a modern, engineering-first culture. The core stack includes: The Engine: Expert-level C# and .NET Core mastery. Architecture: Deep understanding of SOA (Service Oriented Architecture) and complex Object-Oriented design patterns. System Dynamics: Specialized knowledge of concurrency, asynchrony ...

/Online. Proven SPFx development skills. Proficiency in TypeScript, JavaScript, React, HTML5, CSS3. Strong REST API and Microsoft Graph integration experience. Solid C#/.NET framework experience. Deep knowledge of SharePoint on-prem administration, performance tuning, patching and troubleshooting. Experience with BCS and creating External Content Types. Strong SQL Server ...

administration and development of SharePoint 2016, 2019, SE, and SharePoint Online web components. Proficiency developing ASP.NETMVC or ASP.NET Core MVC applications. Strong knowledge of C# programming language with expertise in web API development, SQL and the Entity Framework. Experience with client-side and front-end frameworks such as jQuery, Bootstrap ...

defencefinancialservicesandtransport.WithteamsthatoperategloballyfromofficesacrosstheUK,Ireland,theUS,Nordics,andNetherlands. JobDescription WhyconsiderjoiningtheDigital&Datacommunity Growaflexibleanduniquecareerwithinatrust-basedenvironmentthatvaluesexcellence,innovation,andcuriosity.Youhavetheoptiontoprogresswithusonatechnicalcareertrack.NoneedtogoontothePartnercareertrackifthisdoesntalignwithwhatyouwanttodo. Workonabroadvarietyofprojectsandtechstacksforclientsacrosssevensectors-noprojectiseverthesame Techstackrequiredideally: Whileweadvocateforusingtherighttechfortherighttask,youcanexpecttoworkwiththefollowingtechnologiestoensurescalable,high-performanceapplications: ProgrammingLanguages:JavaScript/TypeScript,Java,C# Frameworks:Vue/Angular/React/Node/Next,Spring/SpringBoot,.NET/ASP.NET Cloudplatforms:AWS,GCP,Azure CI/CD:Jenkins,GitHubActions ...

junior engineers. Desirable: Experience implementing or maintaining a CI/CD pipeline using Github Actions, Terraform, and Azure. Azure Monitoring. Software development experience using C# and SQL Server. Packer, Kubernetes, AKS, Flux or Helm Banking/Financial Services domain experience preferred. Must hold active SC Security Clearance used ...

frontends and .NET 8 backends (Playwright, Cypress or similar). Lead technical quality assurance across complex regulatory systems (AML, KYC, compliance). Review code (C#, TypeScript) to ensure best practice, security and performance. Define and deliver test strategies for enterprise clients. Perform API and integration testing across RESTful services ...

debugging and problem-solving skills Experience collaborating with technical stakeholders such as researchers or data scientists Desirable Experience Experience with languages such as C++, C#, Rust, or JavaScript Experience building microservices or distributed systems Linux experience including debugging services and working with system logs Exposure to trading systems, market data ...

ownership of projects and mentoring more junior team members You have strong TypeScript skills, combined with any backend programming language (e.g. Python, Java, C++, C#) You're happy to work with the following tech stack (you don't need experience with all): Elixir, Ember, Elm, Phoenix, LiveView, Python, PostgreSQL ...

Azure, GCP) and multi-cloud integration. Deep understanding of large language models, machine learning frameworks, and AI architectures. Proficiency in programming languages (Python, Java, C#). Strong analytical and problem-solving skills for complex system design. Experience with DevOps practices and deploying scalable AI services. Excellent communication and collaboration skills ...

financial services. Strong SQL Server expertise (queries, stored procedures, indexing, performance tuning) Experience with large relational datasets Backend development experience in Python or C# Some experience with designing API's Experience working in AWS environments Experience with complex enterprise or legacy systems Strong analytical and problem-solving skills Desirable ...

ability to review architecture, challenge solutions, and implement engineering standards Excellent communication skills for both technical and non-technical stakeholders Familiarity with .NET/C#, Azure, DevOps/CI/CD, microservices, and modern scalable architecture principles is desirable The opportunity: Shape a new leadership role in a regulated, innovative ...

ability to review architecture, challenge solutions, and implement engineering standards Excellent communication skills for both technical and non-technical stakeholders Familiarity with .NET/C#, Azure, DevOps/CI/CD, microservices, and modern scalable architecture principles is desirable The opportunity: Shape a new leadership role in a regulated, innovative ...

maintain production code Research and integrate new technologies Foster a culture of engineering excellence and continuous improvement Key Requirements 5+ years’ experience working with C#/.NET Experience developing front and middle office systems Strong SQL skills Experience with cloud-native solutions (Azure or AWS) Knowledge of event-driven, microservices ...

designing integrations using Azure Functions, Logic Apps, Service Bus, and REST APIs . Solid understanding of Dataverse architecture and data modelling . Experience with C#, .NET, JavaScript, and Dynamics 365 customisation and configuration . Proven experience working in Solution Architect or Technical Architect roles . Strong understanding of enterprise architecture ...

Linux environments Understanding of APIs, SFTP, web services or messaging integrations Confident working within structured software development teams Bonus points for: .NET/C#, Java, MTF, ServiceNow, Agile/DevOps exposure, or experience with carrier management (e.g., Centiro). Why Apply? Join a growing business investing significantly in its warehouse ...

Develop and maintain .NET code for back-end services, APIs, and integrations with other systems. Utilise relevant .NET frameworks and technologies (e.g., ASP.NET Core, C#, Entity Framework). Write unit and integration tests to ensure code quality and reliability. Reverse Engineering: Analyse and understand existing codebases (potentially Python) to identify ...

days) Annual bonus of between 10% and 25%, depending on personal and company performance. Desired Skills and Experience Software, Developer, Asset Management, AML, C#, .NET, .NET Core, angular, UI, Front End, Azure, SQL Server, Financial Services, Lead Developer, Senior Developer, AI, Artificial Intelligence, Hays Specialist Recruitment Limited acts ...

days) Annual bonus of between 10% and 25%, depending on personal and company performance. Desired Skills and Experience Software, Developer, Asset Management, AML, C#, .NET, .NET Core, angular, UI, Front End, Azure, SQL Server, Financial Services, Lead Developer, Senior Developer, AI, Artificial Intelligence, Hays Specialist Recruitment Limited acts ...