276 to 300 of 2,149 ECMAScript Jobs in London

within a Retail environment Hands on experience in development with Microsoft Dynamics Experience with Azure, particularly in Middleware and microservice architecture Strong programming background, with proficiency in .NET, node, JavaScript or equivalent languages Hands on experience with API development, Azure Service Bus, Event Grid, and Azure Functions. More ❯

within a Retail environment Hands on experience in development with Microsoft Dynamics Experience with Azure, particularly in Middleware and microservice architecture Strong programming background, with proficiency in .NET, node, JavaScript or equivalent languages Hands on experience with API development, Azure Service Bus, Event Grid, and Azure Functions. More ❯

design, application development, testing, and operational stability. Expertise in React, including best practices for UI engineering, CSS standards, responsiveness, accessibility, tooling, deployment, scalability, and quality assurance. Proficiency in TypeScript, JavaScript, Node.js, and practical experience with ag-grid, Highcharts, d3, and cloud-native architectures. Ability to design and implement data sourcing strategies, ensuring data accuracy, consistency, and seamless integration from various More ❯

and cyber skills. Role Description We seek experienced Senior Platform Engineers to join our UK Government sector team, contributing to innovative and high-quality solutions. Desired Background Programming in JavaScript, Java, .Net, or Python Designing and building Proof of Concept or Production systems Using Version Control Systems like Git, Mercurial, Perforce Utilising CI/CD tools such as Bamboo, Jenkins More ❯

role provides the chance to work closely with experienced developers and architects. Building and maintaining responsive and interactive mobile and web applications using modern front-end technologies (HTML5, CSS3, JavaScript/TypeScript) and frameworks (e.g., React). Developing server-side applications with back-end technologies like Node.js. Creating and integrating APIs for communication between front-end and back-end systems. More ❯

like Spring MVC, Data, Security, and Cloud Experience developing RESTful APIs, microservices, and working with relational and NoSQL databases Skills in other programming languages such as Go, Python, TypeScript, JavaScript Knowledge of DevOps tools for CI/CD, including Jenkins, Docker, Kubernetes, GIT, and versioning strategies Strong skills in writing unit and integration tests using tools like JUnit, Mockito, PyTest More ❯

We are seeking someone who has experience in one or more of the following technologies but who is also open minded about learning new languages and technologies. Java, Python, JavaScript, TypeScript Angular, React, Vue Docker, Kubernetes AWS, Azure MERN, Elasticsearch, Neo4J Benefits A salary of £40-75k with an exciting array of projects to work on. Company Benefits that More ❯

compiled language such as Java or C++, or an interpreted language like Python, with experience in concurrency and memory management. Responsive web development with React, Angular, Redux, and advanced JavaScript proficiency. NoSQL databases such as MongoDB and Elasticsearch. Designing enterprise-level applications or analyzing raw data sets using Snowflake. Preferred Qualifications Interest or knowledge in trading technologies within a trading More ❯

or C++ or an interpreted language such as Python and experience with concurrency and memory management. Responsive web development, with professional React/Angular/Redux experience and advanced JavaScript proficiency. NoSQL databases such as MongoDb and Elastic Search. Designing enterprise-level applications, or analyzing raw data sets, using Snowflake. Preferred Qualifications Knowledge or interest in trading technologies in the More ❯

understand high level problems defined by the product team, and ensure that the software being produced to meet the problem really solves the problem Nice to have: TypeScript or JavaScript experience Docker experience Experience with Jira Experience with AI testing tools HTML, CSS experience Cloud e.g. AWS experience Benefits: Flexible remote/hybrid working 25 days annual leave, in addition More ❯

services. Experience in team leadership/scrum mastery. Experience with release processes and CI/CD pipelines. Experience with project tracking tools such as Azure DevOps. Our Stack Docker JavaScript Who you are? Creative problem-solver who thrives on a challenge. Passionate about remaining up-to-date with concepts and best practices for coding our API-first, cloud-based apps More ❯

across the UK and the US Eastern and Central time zones Skills Mandatory Skills : Integration Architecture, Java, Application Architecture, SOA and Microservices Based Architecture, Cloud Architecture, Data Architecture, Angular, JavaScript, Microservices, React, SpringBoot #J-18808-Ljbffr More ❯

with overlap in US time zones Nice to Have Experience or interest in Python and AI/ML applications Exposure to event-driven systems or microservices Familiarity with modern JavaScript tooling (TypeScript, Vite, etc.) Knowledge of billing systems, notifications, or scheduling logic within SaaS platforms What We Offer 6–12 month contract with strong potential for extension Competitive compensation Remote More ❯

problems from first principles. • Solid professional software development experience (e.g., 2-5 years) delivering robust solutions. • Solid experience with C# (.NET Core/ASP.NET Core). • Proficiency in modern JavaScript/TypeScript and React. • A genuine passion for technology and building high-quality software. • Strong problem-solving skills and the ability to learn new technologies quickly. • Excellent communication skills and More ❯

essential. You’ll need proficiency in C# or Java , with experience in React or Angular considered a strong advantage. Familiarity with front-end technologies such as HTML, CSS, and JavaScript will also be beneficial. We’d also like to see experience with databases (such as SQL Server or MySQL), version control tools like Git, and some exposure to Agile methodologies More ❯

higher) in Computer Science or in a Technology-related or Business, Management-related field Experience with Back End development using Node (ideally), or Java Front end development skills with JavaScript, React, Typescript Working knowledge of Agile and Lean Software delivery methodologies and basic UI/UX design principles, including prototyping Strong technical mindset with the ability to design and build More ❯

hear from you! Essential Skills & Experience Eligibility for SC clearance. Experience in Agile environments (e.g., SCRUM, Kanban). A technical development background with coding skills in Java, C#, TypeScript, JavaScript, or similar. Expertise in automation testing, with hands-on experience using tools like Playwright, Selenium, Cypress, or RestAssured. Knowledge of integration testing and automation frameworks. Hands-on experience with CI More ❯

a technical perspective. Legacy code or experience working with large, complex codebases is preferred. ASP.NET/.NET CORE MVC, WPF. Experience of web-related technologies (HTML, XML, CSS, JSON, JavaScript, jQuery). MS SQL knowledge is a must. Strong grasp of SOLID design principles, with recent experience implementing in day-today software development practices Entity Framework. Azure knowledge - (blobs, service More ❯

develop, and implement new and innovative solutions. Additional responsibilities include contributing to thought leadership in technical communities, authoring insightful papers, and representing our organisation at leading industry conferences. Technologies Javascript (React/Angular/Node), Typescript, Python. Experience with Amazon Web Services, Microsoft Azure. Who You Are We are in search of committed individuals with a passion for software development More ❯

AM, DS Cloud deployment Docker/GKE/Terraform, Google cloud environment (GKE) App server WebSphere, Jboss, Tomcat, WebLogic Languages C, C++, Java/J2EE Web Development HTML, CSS, JavaScript, JSP, Servlets. Database MS SQL Server2000/2005/2008/R2, PL/SQL, SQL, Oracle 8i/9i/10g, R Directory Server ODSEE 11, Open DJ directory More ❯

AM, DS Cloud deployment Docker/GKE/Terraform, Google cloud environment (GKE) App server WebSphere, Jboss, Tomcat, WebLogic Languages C, C++, Java/J2EE Web Development HTML, CSS, JavaScript, JSP, Servlets. Database MS SQL Server2000/2005/2008/R2, PL/SQL, SQL, Oracle 8i/9i/10g, R Directory Server ODSEE 11, Open DJ directory More ❯

/8 to current Applied knowledge of front end frameworks (Angular, React, other similar) Spring framework or Jax-RS, Jax-WS, JPA Knowledge of selected front end technologies (HTML, JavaScript, CSS) Rest, Hibernate, Docker, Terraform, GitHub, Jenkins, development and deployment in a cloud environment SQL TDD/BDD Experience of working with cloud infrastructure (Azure or AWS, GCP is beneficial More ❯

through clean code, and implement best practices in testing and security. Requirements What We're Looking For 4+ years of professional software development experience Strong proficiency with TypeScript and JavaScript Experience building scalable React component libraries Experience with Node.js backends and modern frameworks Familiarity with SQL databases, preferably PostgreSQL Knowledge of RESTful API design and implementation Solid understanding of software More ❯

and timelines. What are we looking for? Strong knowledge of CMS platforms such as Drupal, including themes, plugins, modules, and templates. Proficiency in web development technologies, including HTML, CSS, JavaScript, and server-side languages (e.g., PHP, .NET, Java). Experience in managing and optimising CMS environments, troubleshooting and resolving complex technical issues. Familiarity with version control systems (e.g., Git, Bitbucket More ❯

in software engineering principles enabling you to build industry leading products, we'd love to hear from you! Requirements Proficiency in at least one programming language (e.g., Python, C#, JavaScript, Kotlin, Java, Go). Experience with Gen AI tools (e.g., LangGraph, CrewAI, Hugging Face, OpenAI APIs) and ML frameworks such as PyTorch/TensorFlow. Experience in building and optimising systems More ❯