1 to 25 of 466 ECMAScript Jobs in London

user experiences.What We're Looking For* Degree in Computer Science, Engineering, or equivalent experience.* Proven experience in full stack development and data engineering.* Strong front-end skills (HTML, CSS, JavaScript, React required).* Solid back-end expertise (Java and Node.js required).* Familiarity with cloud-native architectures and DevOps practices.* First-class leadership or management skills to guide teams and More ❯

ll work closely with multidisciplinary teams to deliver scalable, secure, and user-focused solutions. Key Responsibilities Develop microservices using Java (Spring Boot). Build responsive front-end applications using JavaScript/TypeScript, React, HTML, and CSS. Use Git-based version control and CI/CD pipelines (GitHub, GitLab, Jenkins). Containerize applications using Docker and manage deployments in cloud environments More ❯

code quality. Agile Methodology: Participate in Agile development cycles, contributing to sprint planning, code reviews, and continuous delivery. Key Skills/Experience: Proven experience in development Strong knowledge of JavaScript (ES6+), asynchronous programming, and event-driven architecture. Experience with building and maintaining RESTful APIs. Solid understanding of SQL and NoSQL databases (e.g., MongoDB, PostgreSQL, MySQL). Familiarity with authentication and More ❯

to have. These include:Must haves Proven track record as a developer in an insurance or financial services environment; Strong working knowledge of programming languages (e.g. SQL, C#, VBA, Javascript, XML, JSON, Python); Experience building Excel-integrated applications and/or web-based pricing platforms. Strong database skills (SQL Server or similar) and data integration experience; Proactive, collaborative, flexible and More ❯

Cloud platforms (AWS, Azure) Containerization with Docker/Kubernetes and Agile methodology for software development Proficiency in modern front-end frameworks (such as Angular, React, or ), HTML5, CSS3, and JavaScript/TypeScript. You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen strategic thinking and digital More ❯

software solutions. .NET Developer applicants should have commercial experience with: .NET, .NET Core/ASP.NET MVC, C#, Azure SQL and Agile. Full training will be provided into: .NET 9, JavaScript, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. If you are dedicated to the youthful optimism More ❯

C# applications. .NET Developer applicants should have a skill set that encompasses: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client offers training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a truly amazing opportunity to More ❯

.NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Knowledge of software development methodologies is of interest (Agile, Scrum). My client will provide training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a truly exciting project, one More ❯

candidates with experience in either web application development (.NET Core/ASP.NET MVC, C#) or windows/desktop development (C#.NET). My client can provide training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, WPF, MVVM, Prism, continuous integration, dependency injection, RESTful, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and More ❯

Our client is looking for passionate .NET Developer with experience in .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client will provide training in: .NET 9, JavaScript, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is your opportunity to be part of More ❯

improve the Zaizi knowledge base Mentoring junior members of staff Working with Solution Architects and Delivery Managers to define designs and refine product backlogs Requirements Technologies: Essential: Frontend skills (Javascript, React) CI/CD automation Git (e.g. GitHub or GitLab) DevOps skills (AWS, Docker, Kubernetes) Team leadership and mentoring experience Desirable/beneficial: Good knowledge of security best practises and More ❯

test automation (API testing, UI testing [cucumber, nightwatch]) Nice to have skills: AWS Knowledge of Open Source BPMN workflow engines (Camunda, Activiti or Flowable) Experience on a front-end javascript framework such as react, angular or vue.js RedHat OpenShift for container orchestration Knowledge of NCSCs 14 cloud security principles. SC Clearance: my client works with UK Central Government departments on More ❯

Confluence and Bitbucket is important, alongside the capability to estimate, plan and track work effectively. Candidates should demonstrate strong client-side development experience with HTML5, CSS3, Sass/Less, JavaScript (ES9/2018), TypeScript, RESTful APIs, React and Webpack, as well as mature server-side coding skills using Java 11+ and SQL (DB2, SQL Server or Postgres preferred). A More ❯

Extensive experience in software engineering, with a focus on large-scale, complex systems. Polyglot engineer comfortable working across multiple languages and frameworks (weve used Python, Java, Kotlin, Node.js, C#, JavaScript, Express, React and Next.js to name a few). Passion for learning new technologies and helping others do the same. Proven track record of leading software architecture design and strategic More ❯

a skill set that encompasses: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client can provide you with Greenfield project work and exposure to: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a truly amazing opportunity to More ❯

strong experience and a skill set that encompasses: .NET, .NET Core/ASP.NET MVC and SQL Azure. Our client can provide you with industry recognised training in: .NET 9, JavaScript, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. You will follow a structured career development programme More ❯

either web application development (.NET Core/ASP.NET MVC, C#) or winforms/WPF (C#) development. Our client will provide you with training into: .NET 9, WPF, MVVM, Prism, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and Azure SQL. You will follow the firms official More ❯

a Content Management System (CMS) such as Sitecore, EpiServer, Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or dotnetnuke. Our client can provide you with industry recognised training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a unique opportunity to join More ❯

You should have a good grasp of: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client can provide you with industry recognized training in: .NET 9, JavaScript, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a great opportunity to work alongside More ❯

.NET Developer candidates should be able to demonstrate strong knowledge of: .NET Core/ASP.NET MVC, C# and Azure SQL. Any experience in the following is desirable: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. Training will be provided in any of More ❯

orientated development principles and technologies such as: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. You will receive expert training on the latest technologies including: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. All positions come with the following benefits More ❯

are looking for .NET Developer who have experience in .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. You will receive training in all aspects of: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. These .NET Developer positions come with the More ❯

While we advocate for using the right tech for the right task, you can expect to work with the following technologies to ensure scalable, high-performance applications: Programming Languages: JavaScript/TypeScript, Java, C# Frameworks: Vue/Angular/React/Node/Next, Spring/Spring Boot, .NET/ASP.NET Cloud platforms: AWS, GCP, Azure CI/CD:Jenkins More ❯

While we advocate for using the right tech for the right task, you can expect to work with the following technologies to ensure scalable, high-performance applications: Programming Languages: JavaScript/TypeScript, Java, C# Frameworks: Vue/Angular/React/Node/Next, Spring/Spring Boot, .NET/ASP.NET Cloud platforms: AWS, GCP, Azure CI/CD:Jenkins More ❯

Minimum 5+ years' experience working on Microsoft Technology Stack. Knowledge of .NET C#, TypeScript, React, CSS 3 (Bootstrap) are a must Knowledge of Node.JS, Webpack, SASS/LESS and JavaScript Transpiling Techniques is a bonus Able to stay up to date with the latest changes in technology A command of best practices including code management (i.e. source control), unit testing More ❯