Hampshire, England, United Kingdom Hybrid / WFH Options
Shaw Daniels Solutions
bundlers (Webpack, Vite, Parcel, etc.). Knowledge of performance optimization techniques for web applications. Understanding of SEO best practices for modern front-end development. Experience with testing frameworks (Jest, Mocha, Cypress, Playwright). Strong problem-solving and analytical skills. Ability to work in an Agile/Scrum environment and collaborate across teams. Strong communication and documentation skills. Experience & Qualifications 3+ More ❯
London, England, United Kingdom Hybrid / WFH Options
Global Relay
Experience with any of the following is a nice to have: Worked in an Agile environment Some React.js experience Web Service API integration Selenium/Cypress Unit testing with Mocha, Jasmine/Jest, React Test Related web technologies like Sass/Less, AJAX and JSON Micro Front-End What you can expect: At Global Relay, there’s no ceiling to More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Futuria
cloud-based infrastructure Ability to build dynamic dashboards and complex interactive UIs Familiarity with preprocessors (Sass, LESS) and build tools (Webpack, Gulp) Experience with testing frameworks like Jest or Mocha Strong skills in optimizing front-end performance Success Metrics Deliver high-quality, responsive UI components that elevate the overall user experience Maintain a clean, efficient, and high-performing front-end More ❯
cloud-based infrastructure Ability to build dynamic dashboards and complex interactive UIs Familiarity with preprocessors (Sass, LESS) and build tools (Webpack, Gulp) Experience with testing frameworks like Jest or Mocha Strong skills in optimizing front-end performance Success Metrics Deliver high-quality, responsive UI components that elevate the overall user experience Maintain a clean, efficient, and high-performing front-end More ❯
London, England, United Kingdom Hybrid / WFH Options
Qih Group
Vue.js. Proficiency in HTML5, CSS3, and responsive web design, with experience in CSS preprocessors (Sass, LESS) and CSS-in-JS solutions. Experience with front-end testing frameworks like Jest, Mocha, or Cypress. Expertise in optimising web performance, including lazy loading, bundling, minification, and responsive image handling. Knowledge of CMS would be advantageous. You thrive when working as part of a More ❯
Cambourne, Cambridgeshire, United Kingdom Hybrid / WFH Options
Remotestar
database management systems e.g., MySQL, PostgreSQL, MS SQL Server MongoDB). Familiarity with Git and branching strategies such as GitOps Solid understanding of testing frameworks and methodologies e.g. Jest, Mocha, Selenium. Ability to write and maintain unit, integration, and end-to-end tests. Ability to write and understand design documentation using C4, sequence diagrams and workflows. Excellent problem-solving skills More ❯
Cambourne, England, United Kingdom Hybrid / WFH Options
Remotestar
database management systems e.g., MySQL, PostgreSQL, MS SQL Server MongoDB). Familiarity with Git and branching strategies such as GitOps Solid understanding of testing frameworks and methodologies e.g. Jest, Mocha, Selenium. Ability to write and maintain unit, integration, and end-to-end tests. Ability to write and understand design documentation using C4, sequence diagrams and workflows. Excellent problem-solving skills More ❯
London, England, United Kingdom Hybrid / WFH Options
WorksHub
Express, etc.). Experience with database systems (SQL and/or NoSQL databases). Knowledge of RESTful APIs and frameworks (tRPC, Apollo, etc.). Familiarity with testing frameworks (Jest, Mocha, etc.). Understanding of version control systems (e.g., Git). Excellent problem-solving and troubleshooting skills. Strong communication and teamwork abilities. #J-18808-Ljbffr More ❯
Manchester, England, United Kingdom Hybrid / WFH Options
TAG Group
/UX, User-centred design, accessibility (WCAG/WAI) and usability Wireframes, prototypes and high-fidelity mock-ups Figma or similar e.g. Sketch, Adobe XD Testing frameworks (e.g. Cypress, Mocha, Jest), and broader testing tools such as Selenium, Playwright, Docker, Postman, GitHub or similar The Where and When This is a full-time role (35 hours per week) based in More ❯
Reading, England, United Kingdom Hybrid / WFH Options
CrowdStrike
including experience with CSS pre- or post-processors (like Sass or PostCSS) and CSS frameworks like Tailwind CSS Experience with testing frameworks, tools and methodologies such as QUnit or Mocha Knowledge & interest in developing genuinely accessible interfaces. Comfortable with Git or similar version control systems and workflows. A desire to work closely with others to deliver quality software and solve More ❯
London, England, United Kingdom Hybrid / WFH Options
Experis - ManpowerGroup
asynchronous request handling * Familiarity with version control tools such as Git * Understanding of responsive design and cross-browser compatibility * Expertise in writing testable javascript and some of Karma, Jasmine, Mocha or Protractor * History of picking up new client-side libraries quickly * Familiar with Common Js modules * Working together with other teams to design good REST APIs #J-18808-Ljbffr More ❯
London, England, United Kingdom Hybrid / WFH Options
Capgemini
asynchronous request handling Familiarity with version control tools such as Git Understanding of responsive design and cross-browser compatibility Expertise in writing testable javascript and some of Karma, Jasmine, Mocha or Protractor History of picking up new client-side libraries quickly Familiar with Common Js modules. Working together with other teams to design good REST APIs About Capgemini Capgemini is More ❯
Slough, England, United Kingdom Hybrid / WFH Options
JR United Kingdom
cloud-based infrastructure Ability to build dynamic dashboards and complex interactive UIs Familiarity with preprocessors (Sass, LESS) and build tools (Webpack, Gulp) Experience with testing frameworks like Jest or Mocha Strong skills in optimizing front-end performance Success Metrics Deliver high-quality, responsive UI components that elevate the overall user experience Maintain a clean, efficient, and high-performing front-end More ❯
including complex queries and performance optimisation Hands-on experience with PostGIS or other spatial database technologies Solid understanding of RESTful API design and implementation Experience with testing frameworks (Jest, Mocha, Cypress, or similar) Proficiency with Git version control and collaborative development workflows QA & Testing Focus Experience implementing automated testing strategies Knowledge of CI/CD pipelines and deployment automation Understanding More ❯
Bristol, Gloucestershire, United Kingdom Hybrid / WFH Options
City Science
including complex queries and performance optimisation Hands-on experience with PostGIS or other spatial database technologies Solid understanding of RESTful API design and implementation Experience with testing frameworks (Jest, Mocha, Cypress, or similar) Proficiency with Git version control and collaborative development workflows QA & Testing Focus Experience implementing automated testing strategies Knowledge of CI/CD pipelines and deployment automation Understanding More ❯
London, England, United Kingdom Hybrid / WFH Options
City Science
including complex queries and performance optimisation Hands-on experience with PostGIS or other spatial database technologies Solid understanding of RESTful API design and implementation Experience with testing frameworks (Jest, Mocha, Cypress, or similar) Proficiency with Git version control and collaborative development workflows QA & Testing Focus Experience implementing automated testing strategies Knowledge of CI/CD pipelines and deployment automation Understanding More ❯
Manchester, North West, United Kingdom Hybrid / WFH Options
DWP Digital
Paying up to £73,350 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. DWP. Digital with Purpose. We need Front End Engineers who will work within our Working Age Services team who are responsible More ❯
Leeds, West Yorkshire, Yorkshire, United Kingdom Hybrid / WFH Options
DWP Digital
Paying up to £73,350 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. DWP. Digital with Purpose. We need Front End Engineers who will work within our Working Age Services team who are responsible More ❯
Newcastle Upon Tyne, Tyne and Wear, North East, United Kingdom Hybrid / WFH Options
DWP Digital
Paying up to £73,350 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. DWP. Digital with Purpose. We need Front End Engineers who will work within our Working Age Services team who are responsible More ❯
London, England, United Kingdom Hybrid / WFH Options
Graphics Unlimited (Vic) Pty Ltd
4 days ago Be among the first 25 applicants Paying up to £73,350 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. DWP. Digital with Purpose. We need Front End Engineers who will work More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Connexa
and best practices in mobile app design. * Familiarity with Redux, RESTful APIs, relational databases (MSSQL), and version control tools such as GitHub. * Experience with automated testing frameworks such as Mocha or Jest. * Strong understanding of clean code practices, domain-driven design, and modern architecture principles. * Familiarity with Scrum delivery frameworks and Agile environments. * Excellent problem-solving, communication, and collaboration skills. … fantastic Senior React Native Developer opportunity. Interviews are taking place shortly! Keywords: Senior React Native Developer, Mobile App Development, UI/UX, iOS, Android, Redux, RESTful APIs, GitHub, MSSQL, Mocha, Jest, Clean Code, Agile, FinTech, Hybrid Working, London, App Store, Google Play, Mobile App Launch Established in Didsbury, Connexa Technology Ltd is becoming one of the UK's fastest growing More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Connexa
and best practices in mobile app design.* Familiarity with Redux, RESTful APIs, relational databases (MSSQL), and version control tools such as GitHub.* Experience with automated testing frameworks such as Mocha or Jest.* Strong understanding of clean code practices, domain-driven design, and modern architecture principles.* Familiarity with Scrum delivery frameworks and Agile environments.* Excellent problem-solving, communication, and collaboration skills. … fantastic Senior React Native Developer opportunity. Interviews are taking place shortly! Keywords: Senior React Native Developer, Mobile App Development, UI/UX, iOS, Android, Redux, RESTful APIs, GitHub, MSSQL, Mocha, Jest, Clean Code, Agile, FinTech, Hybrid Working, London, App Store, Google Play, Mobile App Launch Established in Didsbury, Connexa Technology Ltd is becoming one of the UK's fastest growing More ❯
Skills & Experience 3+ years’ professional experience with full-stack JavaScript (React + Node.js) Strong proficiency in GraphQL and modern databases (SQL/NoSQL) Demonstrable expertise in test automation (Jest, Mocha, Cypress, or similar) Ability to define and implement testing strategies —specific tools are flexible Pragmatic approach to balancing delivery speed with code quality Desirable Qualifications Background in regulated industries (e.g. More ❯
London, England, United Kingdom Hybrid / WFH Options
SourceIn
Deep JavaScript/TypeScript knowledge Proficiency in CSS (Tailwind, Bootstrap) Backend experience with Node.js and REST APIs Familiarity with microservices, Docker, and CI/CD Solid testing experience (Jest, Mocha, etc.) Nice to have : Fintech, payment systems or secure coding experience Redis, WebSockets, or real-time system knowledge Familiarity with monorepos, Swagger/OpenAPI, and compliance (PCI, GDPR) Security-First More ❯
London, England, United Kingdom Hybrid / WFH Options
GlobalRelay
like dependency inversion (SOLID etc). Web Service API integration Experience with TDD environment (Test Driven development) Unit testing with PHPUnit and/or a JS test framework eg Mocha, Jasmine/Jest, React Test Worked in an agile environment (Epics, User Stories, Tasks). What you can expect: At Global Relay, there’s no ceiling to what you can More ❯