. 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 More ❯
create modern front-ends - React.js, Angular or Vue HTML, CSS, JavaScript (ES6) or TypeScript Webpack or Gulp A client-side Unit Testing framework e.g., Mocha or Jest Other technical skills API Management and Documentation (Swagger.io, I/O Docs) Experience with high scale, highly transactional, high performance, highly available systems More ❯
create modern front-ends - React.js, Angular or Vue HTML, CSS, JavaScript (ES6) or TypeScript Webpack or Gulp A client-side Unit Testing framework e.g., Mocha or Jest Other Technical Skills API Management and Documentation (Swagger.io, I/O Docs) Experience with high scale, highly transactional, high performance, highly available systems More ❯
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 More ❯
Cambourne, Cambridgeshire, United Kingdom Hybrid / WFH Options
Remotestar
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 More ❯
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 More ❯
Cambourne, England, United Kingdom Hybrid / WFH Options
Remotestar
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 More ❯
Application state management (e.g. ngrx , redux) Advanced HTML5, CSS and CSS preprocessors (Sass) Automated TDD and BDD approaches using frameworks like Cypress, Jest, Jasmine, Mocha or Chai with Protractor and Karma Package managers (NPM or Yarn) Webpack node.js is a big plus as we tend to build our facades in More ❯
London, England, United Kingdom Hybrid / WFH Options
Global Relay
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 More ❯
Application state management ( e.g. ngrx , redux) Advanced HTML5, CSS and CSS preprocessors (Sass) Automated TDD and BDD approaches using frameworks like Cypress, Jest, Jasmine, Mocha or Chai with Protractor and Karma Package managers (NPM or Yarn) Webpack node.js is a big plus as we tend to build our facades in More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Futuria
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 More ❯
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 More ❯
experience in GitHub Actions Strong automated testing and code quality assurance, through unit, integration and end-to-end tests. Using frameworks like Jest, Playwright, Mocha, Cypress to ensure high-quality application reliability and robustness Experience with containerisation tools and orchestration platforms, such as AWS Kubernetes Service (EKS), Elastic Container Service More ❯
. 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). #J-18808-Ljbffr More ❯
AWS services like EC2, Lambda, S3, and CloudWatch Comfortable designing and working with RESTful APIs Hands-on experience with testing frameworks such as Jest , Mocha , or similar Understanding of CI/CD pipelines and modern DevOps practices Strong problem-solving and debugging abilities Excellent communication and teamwork skills A proactive More ❯
London, England, United Kingdom Hybrid / WFH Options
Global Relay
. 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 More ❯
London, England, United Kingdom Hybrid / WFH Options
WorksHub
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 ❯
years of experience as a JavaScript Developer. Strong proficiency in Node.js and React.js . Hands-on experience with unit and integration testing (e.g., Jest, Mocha, Cypress). Deep understanding of JavaScript, ES6+, and modern front-end frameworks. Experience with RESTful APIs, GraphQL, and microservices architecture. Proficiency in Git, CI/ More ❯
London, England, United Kingdom Hybrid / WFH Options
Qih Group
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 More ❯
and Express.js. Monitoring and logging tools like ELK Stack, Prometheus, or Grafana. Automated UI testing with Selenium or Cypress. End-to-end testing with Mocha/Chai. Team communication with Slack or Microsoft Teams. Infrastructure as Code with Terraform or Ansible. Additional programming languages like Python or C#. Qualifications: Bachelor More ❯
London, England, United Kingdom Hybrid / WFH Options
Experis - ManpowerGroup
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 More ❯
processors (SASS, LESS) and HTML5. Knowledge of some server-side languages (e.g. PHP, NodeJS). Knowledge of some client/server testing frameworks (e.g. Mocha, Jasmine, JUnit). Bilingual English and JavaScript. Salary will be in the range £40K to £60K Per Annum. Please send your CV to us in More ❯
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 More ❯
London, England, United Kingdom Hybrid / WFH Options
Capgemini
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 More ❯