1 to 25 of 383 JavaScript Jobs in London

technical leadership role Public sector or central government project experience Consultancy experience and comfort working directly with clients Proficiency across multiple languages (Java, Python, JavaScript, etc.) Who This Role Suits You'll thrive here if you: Enjoy solving complex, meaningful problems Want to contribute to public sector services with real ...

Required At least 3 years' experience in C# and .NET development with strong OOP knowledge Solid front-end skills including HTML5, CSS3 and JavaScript/TypeScript, plus a modern framework (e.g. React, Angular or Blazor) Experience with SQL databases, RESTful APIs and software testing practices Salary & Benefits Salary ...

Required At least 3 years experience in C# and .NET development with strong OOP knowledge Solid front-end skills including HTML5, CSS3 and JavaScript/TypeScript, plus a modern framework (e.g. React, Angular or Blazor) Experience with SQL databases, RESTful APIs and software testing practices Salary & Benefits Salary ...

Required At least 3 years’ experience in C# and .NET development with strong OOP knowledge Solid front-end skills including HTML5, CSS3 and JavaScript/TypeScript, plus a modern framework (e.g. React, Angular or Blazor) Experience with SQL databases, RESTful APIs and software testing practices Salary & Benefits Salary ...

delivering digital products (web apps and services) to market using agile methodologies. Strong proficiency in C#, .NET, React and Azure. Other development skillsets: JavaScript, HTML/CSS, Azure PaaS (Azure Functions, Azure Logic Apps, Cosmos DB, Azure App Service, Azure Service Bus), ARM/Bicep templates, SharePoint. Demonstrable creative flair ...

improvement efforts, introducing new ideas and technologies What You'll Bring Proven experience as a Full Stack Engineer or similar role Expertise in React, JavaScript/TypeScript, HTML, CSS, and responsive design principles Strong understanding of Back End technologies and best practices Passion for writing clean, well-tested code Experience ...

innovation: pilot emerging technologies (AI, automation, data services) that improve efficiency and insight. Tech Stack seeking: Full Stack Developer; Design and Build with C#, JavaScript Library (React.js bonus), API Development, SQL Server/Backend Development including ETL/Integration Azure DevOps (Repos, Pipelines, Boards, Artifacts, Test Plans), CI/ ...

essential , with a strong grasp of front-end design patterns and best practices. Proven hands-on software engineering background across modern web technologies, including JavaScript, HTML, CSS, and React-based frameworks . Strong understanding of modern front-end architecture, including state management, routing, navigation, performance optimisation, module federation, microservice architecture ...

application development (.NET Core, C#) or winforms/WPF (C#) development. Our client will provide you with training into: .NET 10.0, WPF, MVVM, Prism, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and Azure SQL. ...

such as Sitecore, Optimizely, Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or dotnetnuke. Our client can provide you with industry recognised training in: .NET 10.0, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This ...

Support integration with APIs, messaging platforms, databases, and cloud services. Technical Environment: Java React PostgreSQL Kafka Elasticsearch AWS Ansible RESTful services Docker API Gateways JavaScript MongoDB SQL Essential Skills & Experience: Strong commercial experience as a full-stack Java Software Engineer within enterprise environments. Proven experience delivering secure, scalable solutions ...

related field 5+ years of experience in frontend/UI engineering, with a focus on performance and scale Deep expertise in React, TypeScript, and JavaScript Strong understanding of WebSocket integration, low-latency data streaming, and threading Experience troubleshooting data-heavy UIs and optimising load times Familiarity with tools like Redis ...

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 DevOps ...

Flask, Django, or similar Experience working with relational databases (MySQL preferred) and ORMs (e.g. SQLAlchemy, Alembic) Solid understanding of frontend fundamentals: HTML, CSS, JavaScript Strong grasp of software engineering principles: Git/version control Object-oriented programming Testing (unit & integration) Comfortable working in a fast-paced, evolving environment Nice ...

Tealium Event Stream, and Adobe Analytics Experience of integrating data sources via web and hypermedia APIs Proficient in Web Technologies like HTML, CSS, JavaScript, React.js, Next.js and Node.js, and in event-driven and eventual consistency systems using Kafka, .Net, Java, REST APIs, AWS, Terraform and DevOps Nice to have:experience ...

communication, including 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 ...

experience Experience working within secure, regulated environments Strong experience delivering automation within large-scale programmes Technical Skills Automation testing: C#, Selenium, MSTest, BDD, RestSharp, JavaScript UI and API test automation Non-functional testing: JMeter, Azure Load Testing Microsoft Azure cloud experience Azure DevOps and GitHub SQL and data model testing ...

continuous improvement across engineering practices Manage technical debt and ensure engineering decisions align with business and customer outcomes Key Requirements Strong commercial experience with JavaScript/TypeScript React Mandatory Backend expertise in Node.js or Java (JVM-based frameworks) Proven experience designing and building REST-based microservices architectures Strong understanding ...

wider stakeholders to shape new features Skills and Experience Required • Minimum 5 years commercial software development experience • Strong experience with React and modern JavaScript or TypeScript • Experience building and integrating REST APIs • Strong SQL Server or Azure SQL experience • Experience working with Microsoft Azure including App Services, Functions and Storage ...

Full Stack Developer. Strong proficiency in Java and Python. Hands-on experience with API development and integration. Solid understanding of HTML, CSS, JavaScript, and modern front-end frameworks (e.g., React, Angular, or Vue). Experience with databases (SQL and NoSQL). Familiarity with version control systems (e.g., Git). Knowledge ...

. Experience integrating blockchain with web apps (wallets, APIs, indexing services). Strong understanding of security, scalability, and distributed systems. Technical Competencies TypeScript/JavaScript, REST/GraphQL APIs CI/CD pipelines and DevOps tooling Cloud security, identity, and access management Blockchain tooling (Hardhat, Foundry, Web3.js/Ethers.js ...

Experience 5+ years of experience in frontend/UI engineering, with a focus on performance and scale Deep expertise in React, TypeScript, and JavaScript Strong understanding of WebSocket integration, low-latency data streaming, and threading Experience troubleshooting data-heavy UIs and optimising load times Familiarity with tools like Redis, Kafka ...

related field 5+ years of experience in frontend/UI engineering, with a focus on performance and scale Deep expertise in React, TypeScript, and JavaScript Strong understanding of WebSocket integration, low-latency data streaming, and threading Experience troubleshooting data-heavy UIs and optimising load times Familiarity with tools like Redis ...

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 ...

role. AWS Expertise : Strong proficiency in AWS services, particularly Amazon Lex and other AI/ML offerings. Tech Savvy : Proficiency in TypeScript and modern JavaScript frameworks. DevOps Knowledge : Solid understanding of DevOps methodologies and tools (CI/CD, Serverless, Monitoring). Contact Center Familiarity : Experience with contact center technologies ...