24 of 24 Permanent ASP.NET Web API Jobs in London

will play a key leadership role in the modernization of legacy .NET and WCF-based platforms, helping drive the transition to cloud-ready ASP.NET Core APIs, microservices, and Azure-native architectures.**Key Responsibilities****Technical Leadership*** Lead the design and development of applications using **C#, VB.NET**, ASP.NET Core, ASP.NET MVC, Web API, LINQ, and related .NET technologies.* Guide modernization of legacy **VB.NET, WCF, and .NET Framework applications and services** into modern **C#, ASP.NET Core, and .NET 8+ API architectures ...

database objects, complex queries, and data access layers using MS SQL Server and Dapper. Implement real-time communication feeds and RESTful APIs using ASP.NET Web API and SignalR. Leverage LLMs and practical agentic AI workflows (Copilot, Claude) within daily engineering … Jenkins, or Ansible. Maintain high standards of ownership, transparency, and operational risk mitigation. Technical Environment Core Technologies Languages & Frameworks: C# .NET, Windows Services, ASP.NET Web API, SignalR Architecture & Messaging: Event-driven architecture, asynchronous message-driven systems (Rebus), Service-Oriented Architecture ...

.NET Developer, Graduate/Junior – Computer Gaming Company – London (Tech stack: Graduate/Junior .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure, Angular 21, Vue.js, TypeScript, Multithreading, RESTful, ASP.NET Core Web API, EF Core 10.0, Programmer, Full … placement year in industry. Our client can provide with exposure to: .NET 10.0, C# 14, Azure, Angular 21, Vue.js, TypeScript, Multithreading, RESTful, ASP.NET Core Web API, EF Core 10.0, Solid, DRY, LINQ and MongoDB. This is a truly amazing opportunity ...

development cycles, rapidly prototype features, refactor complex UI states, and run automated security reviews. Sitting at the intersection of high-performance backend API services and responsive, polished client interfaces, this role requires an engineer with a strong desire to solve complex enterprise security challenges, such … Claude, ChatGPT, GitHub Copilot How you can make an impact Core Mission: Build secure, scalable full-stack identity workflows using modern C#, Web API and React v19, pairing daily with AI coding assistants while maintaining strict zero-trust code quality. Design, build ...

Tech: C# .Net, ASP.NET, WPF, MySQL Challenge: Greenfield High Data Throughput platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 10 man flat Dev Team Pay: 80k, Bonus- training budget, Pension, Life/Health, Some Flex Working Development Team … Software Engineers should have some experience of the tech stack below: Degree ideally Comp Sci C# Web Frameworks (Including) ASP.net MVC 3+ ASP.net Web Api WPF Click Once Deployments C# Unit Testing frameworks nUnit ...

strong understanding of object-oriented programming, design patterns, service-oriented architecture, concurrency, and SOLID principles Hands-on .NET development experience, including C# and ASP.NET Web API Experience building web applications using Angular, Ember.js, or similar frameworks ...

internal or external systems, including ERP, finance, marketing, e-commerce and third-party applications. Build and maintain data flows using Dataverse Web API, OData, Azure Logic Apps, Azure Functions, Azure Service Bus, Power Automate and Azure Data Factory. Define integration architecture, data … delivering integrations with Microsoft Dynamics 365, including Customer Engagement (CE), Finance & Operations or Business Central. Strong hands-on experience with Dataverse Web API, REST/SOAP APIs, OData, JSON and XML. Proficiency in Azure integration services, including Logic Apps, Azure Functions ...

with stakeholders, develop Treasury applications and own delivery timelines in a global tech environment. The role requires hands-on experience with .NET, C#, ASP.NET Web API, and frontend frameworks like Angular or Ember.js, plus cloud and database skills. You will ...

applications, and database objects using C#/.NET Core/Web API/ASP.NET tech stack.* Support and troubleshooting of DEV, UAT and PROD environment development solutions, working closely with business teams and infrastructure in the timely resolution of critical … meet all the criteria, get in touch anyhow and let us do the worrying...* Strong development experience using C# .NET* Familiarity with the ASP.NET framework, SQL Server and design/architectural patterns (e.g. Model-View-Controller (MVC) and architecture styles/APIs* Relevant technical certifications (preferable)* Relevant University ...

Proven line or team leadership, including developer coaching, performance conversations, objective setting and capability growth. Deep, current C# and .NET 10+ expertise, including ASP.NET Core and Web API services. Strong API and microservice engineering, plus event … production‐support experience. Working knowledge of containers and infrastructure as code, with the judgement to collaborate effectively on platform decisions. Azure API Management, Logic Apps, Functions and wider cloud‐native Azure engineering. Node.js, Python or TypeScript in a mixed‐language engineering estate. Integration or middleware modernisation ...

Agile delivery. Support application modernisation and cloud adoption. Mandatory Skills Strong commercial C#/.NET development experience .NET Core/.NET 6+ ASP.NET Core/Web API REST APIs and microservices SQL Server, including complex queries, stored procedures and optimisation … React/Angular Cloud-native development Application observability and performance engineering DevSecOps and secure coding Preferred Stack C# | .NET Core/.NET 8 | ASP.NET Core | REST APIs | SQL Server | Entity Framework | Azure | Azure DevOps | Git | Docker | Kubernetes | Kafka | Redis | JSON/XML | Swagger/OpenAPI #J-18808-Ljbffr ...

supporting them in their key skills, accountabilities and development areas. Desirable Skills: 5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Strong experience in working with Azure (preferably certified … skill levels and provide guidance through peer reviews Experience in Azure, including DevOps CI/CD processes, Service bus Architecture, Microservices, Functions, Web apps, IAC Experience with AI driven development tools such as Claude Experience developing REST API-driven mobile first web ...

perform root-cause analysis. Follow engineering, security and development standards. Support application modernisation and cloud adoption. Mandatory Skills .NET Core/.NET 6+ ASP.NET Core/Web API REST APIs and microservices SQL Server, including complex queries, stored procedures ...

/React and deploying via managed solutions Strong command of Power Fx, DAX (for Power BI integration), and JavaScript/TypeScript for web resource and PCF development Deep experience with Dataverse: complex data modelling, relationships, business rules, calculated fields, rollup fields, and virtual tables Hands … experience with Power Pages (formerly Power Apps Portals) including Liquid templates, web templates, and portal security ALM, DevOps & Integration Expert knowledge of Power Platform ALM: solution management (managed/unmanaged), environment strategy, solution layering, and deployment pipelines Hands‐on experience building CI/CD pipelines using ...

/React and deploying via managed solutions Strong command of Power Fx, DAX (for Power BI integration), and JavaScript/TypeScript for web resource and PCF development Deep experience with Dataverse: complex data modelling, relationships, business rules, calculated fields, rollup fields, and virtual tables Hands … experience with Power Pages (formerly Power Apps Portals) including Liquid templates, web templates, and portal security ALM, DevOps & Integration Expert knowledge of Power Platform ALM: solution management (managed/unmanaged), environment strategy, solution layering, and deployment pipelines Hands‐on experience building CI/CD pipelines using ...

with Power Platform, Dataverse, Model-Driven Apps and Dynamics 365 Customer Service. Proven skills in PCF, React, TypeScript, JavaScript, C# and .NET/ASP.NET Core. Experience with Power Automate, Dataverse Web API, REST APIs and external-system integration. Practical knowledge … Azure services such as API Management, Functions, Service Bus, Key Vault and Application Insights. Experience with Git, Azure DevOps, CI/CD and Power Platform ALM across DEV, TEST, UAT and PROD. Typically five or more years of Microsoft application development experience, confidently working across ...

solutionsTechnical requirementsThe candidates will have experience of leading teams designing and developing solutions utilising most of the following technologies:• Strong front end web development experience with Angular or React (we use Angular), Typescript, JavaScript, HTML/CSS with an eye for good UX• Experience in designing … building distributed systems using Microsoft C#, .NET Core and Web API• Experience working with relational databases such as Oracle or SQL Server• Experience with deploying applications to Cloud infrastructure such as Azure or AWS• Any exposure to application containerisation and orchestration ...

Dynamics 365 CE applications (Sales, Customer Service, Field Service). Create and maintain Plugins, Custom Workflow Activities, JavaScript/TypeScript customisations, and Web APIs. Configure entities, forms, views, dashboards, business rules, and security roles. Build Power Apps (Model-Driven and Canvas Apps), Power Automate workflows …/CRM C#, .NET Framework/.NET Core JavaScript/TypeScript Dataverse Power Apps (Model-Driven & Canvas) Power Automate REST APIs/Web API Azure Functions, Logic Apps, Service Bus Azure DevOps, Git SQL Server, FetchXML Experience Hands-on experience on Dynamics ...

maintain enterprise-scale Dynamics 365 CE solutions. Develop custom functionality using: C# .NET Plug-ins Custom Workflow Activities JavaScript/TypeScript Web API PCF Controls Extend and customise Model-Driven Apps to support complex business processes. Design and implement robust integrations with … Azure Integration and Cloud Engineering Design and implement cloud-native integration solutions using Azure services. Develop: Azure Functions Logic Apps Service Bus API Management Azure Storage Azure SQL Event-based integration patterns. Build scalable, supportable and secure integration architectures. Work closely with cloud engineering teams ...

engineering using .net Core. The following are the key skills that the Client will require: Proficient in .Net Core,ASP.NetCore. C#, WPF, Web API, WCF, SQL Server (T-SQL), PowerShell, HTML, JavaScript Should have working knowledge on Azure Service Bus and Rabbit ...

design, build, and maintain multi-asset class applications. The role focuses on Angular front-end (React acceptable) with C# .NET Core backend, Web API, and strong UX considerations. You will collaborate with IT and business teams, contributing to architecture, testing, and deployment ...

join its Trade Operations IT Delivery Team. You will design, develop and support bespoke multi-asset class applications using C#, .NET Core, Web API, and Angular front end while collaborating with business analysts and IT colleagues. You will deploy changes to production ...

developing solutions utilising most of the following technologies:• Experience in designing and building distributed systems using Microsoft C#, .NET Core and Web API.• Experience working with relational databases such as Oracle or SQL Server• Basic front end web development experience ...

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 2, EF6) and modern .NET, as both will coexist for the whole transition period. Navigate across the multiple existing systems such … Senior-level, hands-on experience in modern .NET (.NET 6+) paired with deep, comfortable familiarity with legacy .NET Framework 4.8 (ASP.NET MVC 5, WebAPI 2, Entity Framework 6). We need someone who respects the legacy code and is happy working in it today. High proficiency in reading ...