1 to 25 of 108 npm Jobs in England

implement frontend best practices in areas such as performance optimization, code quality, testing (React Testing Library, Jest, etc.), accessibility, and maintainability. Drive improvements and innovation in ourfrontend architecture, tooling (NPM, Webpack, Vite), and development processes. Technologies We Use Languages & Frameworks: JavaScript (ES6+), TypeScript, React, Next.js, Redux, HTML5, CSS3/SCSS Testing: React Testing Library, Jest, Cypress (or similar) Build & Tooling … NPM, Webpack, Vite (or similar modernbundlers), Babel DevOps & Tools: AWS (S3, CloudFront, etc.), GitlabCI/CD, Git Backend Interaction: RESTful APIs (from Grails/Java services) Qualifications Must haves: 5-7+ years of proven track record in frontend development, with a strongportfolio of building complex, scalable web applications using JavaScript, CSS, and HTML. Expert-level experience with React, Next.js … lead technical design discussions, collaborate effectively with UI/UX, andtranslate complex requirements into technically feasible and elegant designs. Deep experience setting up, configuring, and optimizing modern JavaScript applicationtooling (NPM, Webpack, Babel, linters, etc.). Strong experience and passion for working with ourevolving stack and tools, including modern JavaScript/TypeScript and frontend frameworks. Proven ability to quickly learn and More ❯

and maintainability. Advocate for and implement best practices in front-end development, including code structure, performance optimizations, and emerging technologies. Monitor and maintain the tech stack and dependencies using npm & composer, ensuring their stability, security, and efficiency. Keep documentation up to date, ensuring clear and comprehensive information for the codebase, APIs, and system architecture. Technical Stack: Languages: PHP 8+, TypeScript … Javascript Frameworks: Laravel, React, Vue, Doctrine Database: Mysql 8+ Cloud providers: Amazon, Azure Tools: Github, Jira, Figma, ESLint, ESBuild, webpack, npm, composer, storybook Versioning tool: Github CI/CD: Github actions, Docker, Jenkins Testing: PHPUnit, Jest Your Profile Engineer Degree/Master Degree in Computer Science A minimum of 3 years of relevant work experience in full-stack developments in More ❯

Experience with CSS preprocessors such as SASS or LESS Strong HTML5 and CSS3 layout and styling skills Experience with component-based architecture and design systems Strong experience working with NPM/Yarn, bundlers (Webpack/Vite), and build tools Experience writing and maintaining unit tests (Jest, Mocha, Jasmine, etc.) Comfortable working with RESTful APIs Experience integrating with design/UX More ❯

experience in React.js and Next.js. • Solid understanding of front-end technologies such as HTML5, CSS3, and responsive design principles. • Experience with modern build tools and package managers like Webpack, npm, or Yarn. • Familiarity with RESTful API design and integration. • Experience with version control systems, particularly Git. • Strong problem-solving skills, attention to detail, and a proactive attitude. • Excellent communication skills More ❯

management libraries such as Redux or MobX Familiarity with RESTful APIs and asynchronous data fetching Knowledge of modern front-end development tools and frameworks such as webpack, babel, and npm Experience with version control systems such as Git Demonstrated ability to effectively use AI tools (e.g., GitHub Copilot, ChatGPT, AI-powered testing and linting tools) to accelerate and improve software More ❯

high across the board Modernise older systems and improve the tech stack as you go Troubleshoot issues quickly to keep things running smoothly Use tools like Webpack , Composer , and NPM to streamline your workflow Keep everything well documented for easy collaboration General Responsibilities Follow internal policies and help maintain a safe, compliant workplace Take part in team meetings, knowledge-sharing … Vue.js (or similar JavaScript libraries) Confident with HTML , SCSS , JavaScript , and MySQL Familiar with Git and version control best practices Comfortable integrating APIs and using tools like Composer and NPM Experience working with (and improving) legacy codebases Strong problem-solving and performance optimisation skills Experience leading projects and mentoring developers Good communicator and a team player Strong attention to detail More ❯

our credit trading platform meets all the security and audit requirements Your skills and experience Typescript, JavaScript, React, HTML/CSS, NodeJS, Java 8, Vert.x, Linux Jira, Confluence, Git, NPM, Yarn, Webpack, Teamcity/Jenkins, Artifactory Understanding of working in an Agile/DevOps environment Experience working in a development team Strong UI/UX, analytical and design skills Existing More ❯

our credit trading platform meets all the security and audit requirements Your skills and experience Typescript, JavaScript, React, HTML/CSS, NodeJS, Java 8, Vert.x, Linux Jira, Confluence, Git, NPM, Yarn, Webpack, Teamcity/Jenkins, Artifactory Understanding of working in an Agile/DevOps environment Experience working in a development team Strong UI/UX, analytical and design skills Existing More ❯

our credit trading platform meets all the security and audit requirements Your skills and experience Typescript, JavaScript, React, HTML/CSS, NodeJS, Java 8, Vert.x, Linux Jira, Confluence, Git, NPM, Yarn, Webpack, Teamcity/Jenkins, Artifactory Understanding of working in an Agile/DevOps environment Experience working in a development team Strong UI/UX, analytical and design skills Existing More ❯

and compliance standards. Key Skills & Experience: • Strong proficiency in TypeScript, JavaScript, React, HTML/CSS, Node.js. • Familiarity with backend technologies such as Java 8, Vert.x, Linux. • JIRA, Confluence, Git, NPM, Yarn, Webpack, TeamCity/Jenkins, Artifactory. • Demonstrable experience running a development team. • Experience in Agile/DevOps environments. • Excellent communication skills. • Strong UI/UX, analytical and design capabilities with More ❯

of professional experience in frontend development, with a strong portfolio of work using React.js and Redux in production environments. Expertise in modern JavaScript (ES6+) and frontend tooling (Webpack, Babel, NPM/Yarn). Solid understanding of REST APIs and asynchronous request handling. Strong command of responsive design principles, mobile-first development, and accessibility standards. Experience with version control systems (e.g. More ❯

design, including CSS frameworks such as Bootstrap or Tailwind Familiarity with RESTful APIs and integration of third-party services and APIs Proficiency with front-end build tools like Webpack, npm, and Yarn Expertise in version control systems, particularly Git, and collaboration platforms such as GitHub or GitLab Experience with TypeScript and familiarity with ES6+ features Strong understanding of accessibility standards More ❯

of web development concepts, including RESTful APIs and asynchronous programming. Experience with database systems (MySql, MongoDB, PostgreSQL, etc.). Knowledge of front-end build tools and package managers (Webpack, npm, etc.). Excellent problem-solving skills and the ability to work both independently and collaboratively in a team environment. Required: Proficiency in .NET Core for backend development. Expertise in React More ❯

stand-ups. HTML and CSS/SASS Modern JavaScript React NextJS Good understanding of web standards, accessibility and performance Build tools, such as Webpack Unit testing and Git and NPM/Yarn to manage your work and dependencies Desirable skills PHP/Wordpress NodeJS CSS methodologies (B.E.M etc) AWS/Docker/Jenkins A relaxed working environment with regular socials More ❯

field. Desirable Skills Experience with Linux development environments; Experience architecting software systems that interface with hardware; Experience with the Angular framework; Familiarity with any of .NET Core, TypeScript, RxJS, NPM; Understanding of SAFE; Demonstrated ability to document, plan and manage software team activities; Experience of setting up, monitoring and reporting appropriate metrics throughout the software project lifecycle. Important to know More ❯

would be advantageous: Experience with Linux development environments; Experience architecting software systems that interface with hardware; Experience with the Angular framework; Familiarity with any of .NET Core, TypeScript, RxJS, NPM; Understanding of Agile methodologies, including Scrum or SAFe; Demonstrated ability to document, plan and manage software team activities; Experience of setting up, monitoring and reporting appropriate metrics throughout the software More ❯

such as JSON Web Token Familiarity with modern front-end build pipelines and tools (Github actions a bonus) Experience with common front-end development tools such as Babel, Webpack, NPM, etc. Ability to understand business requirements and translate them into technical requirements A knack for benchmarking and optimization Familiarity with git Experience with React Native is a bonus ****THIS ROLE More ❯

practices and documentation Build tools (Webpack or similar) Automated testing Strong experience with GIT version control Experience with HTML, SCSS and JavaScript Familiar with package managers e.g. Composer/NPM Comfortable working with existing codebases Comfortable identifying and squashing bugs Excellent communication skills High attention to details What do we offer? Participate in open, fun, entrepreneurial, and creative company culture More ❯

Experience with developing reusable components, services and toolkits. Experience with RESTful APIs, asynchronous programming and their best practices. Familiarity with version control systems (e.g., Git) and package managers (e.g., npm). Knowledge of front-end build tools and workflows, such as Webpack or Vite skills. Working knowledge of web app packaging, building docker images, running containers. Familiarity with CI/ More ❯

required by the company. Experience: 6+ years in UI development Understanding of modern application architectures Attention to detail with a big picture perspective Strong knowledge of TypeScript, NodeJS, and NPM Experience with RESTful API integration Proficiency with HTML5 & CSS3 Expertise with VueJS 3 and Nuxt 3 Proficiency in testing (unit and functional) Understanding of Agile methodologies and SDLC Experience in More ❯

The total process should take around 2 weeks. Technical Requirements Frontend: Vue JS 3, ReactJS, TypeScript Framework: Symfony, Doctrine ORM API: RESTful API, OpenAPI 3.1, Redocly Package Management: Composer, NPM, Yarn Testing: PHPUnit, Vitest, Jest, Cypress, Testing Library Build: Vite, Rollup Version Control: Git JS: ES6/7 Infrastructure: Docker, Terraform, GitHub, AWS, Datadog, Jenkins (moving away). Database: MySQL More ❯

Preferred qualifications, capabilities, and skills Exposure to cloud technologies. Familiarity with CSS modules or styled components and CSS selectors. Familiarity with tools like Webpack, Vite, and package managers like npm or Yarn. About Us J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world’s most prominent corporations, governments, wealthy individuals and institutional More ❯

ensuring high-quality and timely delivery. Required Skills and Experience: 3+ years of professional experience in full-stack software development. Strong proficiency in JavaScript, TypeScript, Node.js, React.js, Yarn, and NPM Optimize UI/UX for responsiveness, accessibility, and performance Understanding of microservices, and event-based architecture. Hands-on experience with Docker and containerized development Familiarity with event-driven architectures and More ❯

Javascript, TypeScript, Websocket, React, Angular, Material UI, and REST APIs. Solid understanding and experience in one or more of the modern JavaScript build tool chains using tools like node, npm, rush, yarn, webpack, babel, cyprus. Programming experience with at least one modern language such as Java, C++, or C# including object-oriented design, distributed (multi-tiered) systems, algorithms, and relational More ❯

SFRA, SCAPI, SLAS), Bootstrap, HTML5, CSS 3, Media Query. Working experience of state management frameworks (Redux, etc.). Strong knowledge of HTML, CSS, SASS, React.js Redux, Bootstrap, Graph QL, NPM, Formik, Micro frontends, Next.js, JavaScript, Typescript. Experience of building & deploying with serverless frameworks. Strong understanding of code quality, security and performance considerations. Able to work independently in a fast-paced More ❯