1 to 25 of 455 Jest Jobs

Use modern testing practices and frameworks integrated with CI/CD pipelines. Strong experience of test first development and unit testing with modern testing frameworks and tools such as Jest, Enzyme, React Testing Library, Pact, Cypress and Playwright. DevOps: Familiarity with CI/CD and build pipelines, using tools such as Github , Harness, Jenkins, Docker, ELK, Grafana and Dynatrace. Take More ❯

Use modern testing practices and frameworks integrated with CI/CD pipelines. Strong experience of test first development and unit testing with modern testing frameworks and tools such as Jest, Enzyme, React Testing Library, Pact, Cypress and Playwright. DevOps: Familiarity with CI/CD and build pipelines, using tools such as Github , Harness, Jenkins, Docker, ELK, Grafana and Dynatrace. Take More ❯

and other modern frontend frameworks. DevOps: Familiarity with CI/CD tools (GitHub, Jenkins, Harness), Docker, Kubernetes, and cloud platforms (GCP preferred). Automation: Experience with automated testing frameworks (Jest, Cypress, Pact, etc.). ABOUT WORKING FOR US Our ambition is to be the leading UK business for diversity, equity and inclusion supporting our customers, colleagues and communities and we More ❯

and other modern frontend frameworks. DevOps: Familiarity with CI/CD tools (GitHub, Jenkins, Harness), Docker, Kubernetes, and cloud platforms (GCP preferred). Automation: Experience with automated testing frameworks (Jest, Cypress, Pact, etc.). ABOUT WORKING FOR US Our ambition is to be the leading UK business for diversity, equity and inclusion supporting our customers, colleagues and communities and we More ❯

and other modern frontend frameworks. DevOps: Familiarity with CI/CD tools (GitHub, Jenkins, Harness), Docker, Kubernetes, and cloud platforms (GCP preferred). Automation: Experience with automated testing frameworks (Jest, Cypress, Pact, etc.). ABOUT WORKING FOR US Our ambition is to be the leading UK business for diversity, equity and inclusion supporting our customers, colleagues and communities and we More ❯

CSS3, and modern frontend frameworks. DevOps: Familiarity with CI/CD tools (GitHub, Jenkins, Harness), Docker, Kubernetes, and cloud platforms (GCP preferred). Automation: Experience with automated testing frameworks (Jest, Cypress, Pact, etc.). ABOUT WORKING FOR US Our ambition is to be the leading UK business for diversity, equity and inclusion supporting our customers, colleagues and communities and we More ❯

and other modern frontend frameworks. DevOps: Familiarity with CI/CD tools (GitHub, Jenkins, Harness), Docker, Kubernetes, and cloud platforms (GCP preferred). Automation: Experience with automated testing frameworks (Jest, Cypress, Pact, etc.). ABOUT WORKING FOR US Our ambition is to be the leading UK business for diversity, equity and inclusion supporting our customers, colleagues and communities and we More ❯

or Context API. Strong grasp of component-driven development , accessibility, responsive design, and UI/UX best practices. Experience with automated testing —unit, integration, and E2E—using tools like Jest, React Testing Library, Cypress, or similar. Cloud infrastructure experience (AWS, GCP, or Azure), with a focus on scalability, observability, and cost efficiency. Solid understanding of Infrastructure as Code (IaC) using More ❯

with 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 More ❯

with 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 More ❯

with 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 More ❯

JavaScript frameworks to 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 and robust applications Knowledge of Continuous Delivery More ❯

structuring, sitemap configuration, crawl budget API Design: RESTful APIs, OpenAPI/Swagger, GraphQL CMS: Experience with various CMS platforms; headless CMS integration (e.g., Contentful, Sanity, Strapi) Testing: Automated testing (Jest, Mocha, Selenium), TDD, BDD, integration and load testing Observability: Logging, tracing, monitoring tools (e.g., Sentry, Datadog, New Relic) System Architecture: Designing scalable, secure, and maintainable web architectures Please apply online More ❯

Familiarity with frontend development for Command and Control Systems (C2 Systems) or similar mission-critical platforms. Experience with state management libraries: Redux Toolkit, Recoil, Zustand. Knowledge of testing frameworks: Jest, React Testing Library, Cypress. Experience integrating frontend applications with RESTful APIs, WebSocket, and real-time data streams. Familiarity with frontend security best practices (e.g., OWASP Top 10 for Web). More ❯

and GraphQL APIs Working knowledge of SQL and NoSQL databases (PostgreSQL, MongoDB, DynamoDB) Exposure to Infrastructure as Code tools (Terraform or CloudFormation) is beneficial Experience with testing frameworks like Jest or Cypress Comfortable working with CI/CD pipelines and automated deployments Awareness of security best practices and performance optimisation Collaborative mindset and ability to work effectively in agile teams More ❯

module 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 More ❯

module 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 More ❯

with additional front-end frameworks such as React or Vue.js Knowledge of accessibility and security compliance Experience in building micro-services and using containerization technologies like Docker Familiarity with Jest or other testing frameworks for front-end applications Benefits Competitive Salary Company Bonus scheme Comprehensive healthcare cash plan A generous 27 days of annual leave in addition to Bank Holidays More ❯

optimisation and effective state synchronisation. Proficiency with front-end build tools such as Webpack,Vite, or Parcel and familiarity with modern development pipelines. Experience with testing frameworks and tools (Jest, React Testing Library, Cypress). Familiarity with accessibility best practices and semantic HTML. Understanding of git workflows andcollaborative development practices. Strong problem-solving skills with a focus ondelivering high-quality More ❯

experience React, Typescript/js (ES6) Node.js (express) Experience with SQL relational databases such as Postgresql Demonstrable experience of using Restful API in a production setting. Test frameworks (e.g. jest, jasmine, playwright) Understanding of CI/CD pipelines Linux/Unix, Git Agile and XP (Scrum, Kanban, TDD) Desirable: Highcharts, Devextreme, tanstack React Components, Bootstrap, HTML5 Understanding and implementation of More ❯

complex bugs, identifying root causes, andimplementing robust solutions for production issues. Champion and 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, and state management libraries like Redux. Proficient with React Testing Library, Jest, or similarfrontend testing frameworks. Demonstrated ability to 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 More ❯

with additional front-end frameworks such as React or Vue.js Knowledge of accessibility and security compliance Experience in building micro-services and using containerization technologies like Docker Familiarity with Jest or other testing frameworks for front-end applications Next Steps This opportunity is fast moving. If you’re passionate about writing clean code and building exceptional digital products, hit the More ❯

speed and scalability Build reusable code and libraries for future use Your Profile Strong front-end technology skills using HTML, CSS, JavaScript, React JS, Redux, Node, test framework (e.g., Jest) Strong experience with back-end technology: Java, SpringBoot, JPA, Hibernate, Junit, Mockito, microservices Experience with SQL (MS SQL preferred), cloud technology and messaging tools. Experience with standard DevOps tools: Jira More ❯

speed and scalability Build reusable code and libraries for future use Your Profile Strong front-end technology skills using HTML, CSS, JavaScript, React JS, Redux, Node, test framework (e.g., Jest) Strong experience with back-end technology: Java, SpringBoot, JPA, Hibernate, Junit, Mockito, microservices Experience with SQL (MS SQL preferred), cloud technology and messaging tools. Experience with standard DevOps tools: Jira More ❯

microservices design patterns. Experience in working with Git operations such as branching and merging. Preferred: Experience in querying using SQL. Experience in developing unit testing using frameworks such as Jest, ng-mocks. Familiarity with backend development Spring Boot restful services and microservice (Spring cloud) Familiar with automation testing tools Cypress, Selenium, JMeter Job Skills: Must have strong HTML5, JSON, CSS More ❯