26 to 50 of 72 Jest Jobs in the UK

create intuitive user experiences Proven ability to work in both rapid prototyping mode and to ship/maintain large-scale products Knowledge of modern front-end testing frameworks like Jest or Cypress Familiarity with deploying software for Cloud Environments (AWS/Azure/GCP) (IaC experience such as Terraform is a plus) Experience with containerisation technologies like Docker (Kubernetes experience More ❯

deployment (e.g., GitHub Actions, CodePipeline). Ensure security, scalability, and performance best practices in all cloud-based solutions. Implement unit tests, integration tests, and end-to-end testing using Jest, Mocha, or other frameworks. Monitor, troubleshoot, and optimize existing systems for performance and cost-efficiency. Participate in agile ceremonies and contribute to architecture/design discussions. More ❯

retrieval, manipulation and management. Experience with developing accessible, responsive layouts using componentised CSS/SASS. Working practices such as test-driven development or behaviour-driven development. TypeScript testing using Jest or a similar framework and React Testing Library or Enzyme for component testing. Desirable Skills: Familiarity with SQL database concepts and hands on experience with PostgreSQL. Familiarity with version control More ❯

a plus if you also possess previous experience in: TDD/ATDD/BDD, DDD, Pair/Ensemble Programming Wildfly, Oracle SQL, AWS, Docker/Kubernetes, Kafka, Jenkins GWT, Jest, Vite, Cypress, Playwright, eslint, esbuild, webpack, web components More ❯

a plus if you also possess previous experience in: TDD/ATDD/BDD, DDD, Pair/Ensemble Programming Wildfly, Oracle SQL, AWS, Docker/Kubernetes, Kafka, Jenkins GWT, Jest, Vite, Cypress, Playwright, eslint, esbuild, webpack, web components More ❯

Knowledge of performance tuning techniques including lazy loading, code splitting, and asset optimisation. Experience consuming secure REST APIs from the browser. Familiarity with front-end testing frameworks such as Jest, React Testing Library, Playwright or Cypress. Solid understanding of modern front-end tooling (e.g., npm/yarn, Vite/Webpack, ESLint/Prettier). Strong communication and collaboration skills across More ❯

first mindset (Core Web Vitals): code splitting, lazy loading, bundle analysis. Experience calling REST APIs securely from the browser, handling auth tokens/refresh and robust error UX. Testing: Jest + React Testing Library for unit/integration; Playwright or Cypress for E2E. Familiar with modern tooling (npm/yarn/pnpm, Vite/Webpack, ESLint/Prettier, type-checks More ❯

engineers 4th Stage - Cross-functional interview followed by a conversation with our VP Engineering Additional information Doxy.me tech stack Frontend: React, TypeScript, Playwright, WebRTC, Next.js, Nx.dev Backend: Nodejs, TypeScript, Jest, NestJS, Nx.dev Cloud: AWS 3rd party: Vonage, Pubnub, Segment, Twilio, Stripe Our product: Doxy.me : The simple, free, and secure telemedicine solution currently used by over 1,000,000 doctors worldwide More ❯

would be advantageous but is not a prerequisite Good software engineering principles eg Version control/Git, issue tracking, documentation etc Node.js Front end development tools and libraries like jest, rollup etc Experience with connected devices Web/UX design appreciation Figma or similar Full stack software development If you are seeking a role of this nature, please get in More ❯

would be advantageous but is not a prerequisite Good software engineering principles eg Version control/Git, issue tracking, documentation etc Node.js Front end development tools and libraries like jest, rollup etc Experience with connected devices Web/UX design appreciation Figma or similar Full stack software development If you are seeking a role of this nature, please get in More ❯

TypeScript , HTML5 , and CSS3 Experience integrating with design systems and tools such as Figma Familiarity with modern development tools including Git, CI/CD workflows, and testing frameworks (e.g. Jest, Testing Library) Comfortable working in agile environments with cross-functional teams Excellent attention to detail and ability to bring design concepts to life through clean, maintainable code More ❯

TypeScript , HTML5 , and CSS3 Experience integrating with design systems and tools such as Figma Familiarity with modern development tools including Git, CI/CD workflows, and testing frameworks (e.g. Jest, Testing Library) Comfortable working in agile environments with cross-functional teams Excellent attention to detail and ability to bring design concepts to life through clean, maintainable code More ❯

What youll bring: Extensive experience with TypeScript and Node.js in production environments. Strong knowledge of GraphQL (API design, schema evolution, integration ). Experience with automated testing frameworks ( Vitest, Playwright, Jest ). Familiarity with DevOps tooling: Docker, Helm, Kubernetes , CI/CD pipelines. Experience with cloud-native architectures and infrastructure-as-code. Ability to drive improvements across the codebase and influence More ❯

in the following would be advantageous: Latest versions of .NET AI, Machine Learning JavaScript, TypeScript and associated frameworks Containers, Docker, Kubernetes NoSQL Test tools such as xUnit, Cypress, Selenium, Jest, SoapUI Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy. More ❯

in the following would be advantageous: Latest versions of .NET AI, Machine Learning JavaScript, TypeScript and associated frameworks Containers, Docker, Kubernetes NoSQL Test tools such as xUnit, Cypress, Selenium, Jest, SoapUI Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy. More ❯

in the following would be advantageous: Latest versions of .NET AI, Machine Learning JavaScript, TypeScript and associated frameworks Containers, Docker, Kubernetes NoSQL Test tools such as xUnit, Cypress, Selenium, Jest, SoapUI Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy. More ❯

source tools and frameworks such as HTML, CSS, JavaScript (client and server-side), TypeScript, and modern front-end frameworks. Proven ability in delivering comprehensive unit testing using frameworks like Jest or Mocha. Extensive experience integrating front-end systems with back-end services, databases (SQL/NoSQL), caching tools like Redis, and API microservices within cloud environments (AWS or Azure). More ❯

source tools and frameworks such as HTML, CSS, JavaScript (client and server-side), TypeScript, and modern front-end frameworks. Proven ability in delivering comprehensive unit testing using frameworks like Jest or Mocha. Extensive experience integrating front-end systems with back-end services, databases (SQL/NoSQL), caching tools like Redis, and API microservices within cloud environments (AWS or Azure). More ❯

and other front-end frameworks. Experience in building accessible compliant user interfaces (WCAG). Proven ability in delivering thorough unit level test coverage using common testing frameworks such as Jest or Mocha. Experience integrating with a wide range of technical systems including database technologies (SQL or NoSQL), caching tools such as Redis and API Microservices, all deploying into cloud-based More ❯

quality, user-focused solutions. Core Frontend Skills: Proficient in TypeScript, React, HTML5, and CSS3, with the ability to build scalable, maintainable, and performant interfaces. Testing & Quality Assurance: Experience with Jest and related testing practices to ensure reliable and well-tested codebases. Security & Best Practices: Strong understanding of frontend security principles and safe coding practices. Accessibility & Inclusive Design: Skilled in applying More ❯

quality, user-focused solutions. Core Frontend Skills: Proficient in TypeScript, React, HTML5, and CSS3, with the ability to build scalable, maintainable, and performant interfaces. Testing & Quality Assurance: Experience with Jest and related testing practices to ensure reliable and well-tested codebases. Security & Best Practices: Strong understanding of frontend security principles and safe coding practices. Accessibility & Inclusive Design: Skilled in applying More ❯

GraphQL, and AWS (EKS, Lambda, RDS). A proven track record in building resilient APIs and managing backend services/databases. Experience with TDD and testing frameworks such as Jest and Pact. Knowledge of CI/CD pipelines (ideally GitHub Actions). Hands-on experience with observability/monitoring tools (e.g., DataDog). A proactive, problem-solving mindset with the More ❯

engineer who keenly avoids over-engineering solutions. Holds high quality code in a delivery focused setting. Experience developing shared code libraries (NPM packages). Experience with automated testing frameworks (Jest, Karma, Cypress, or Protractor) Competency with CI/CD pipeline to release software safely and effectively. Why Join Them? Join a company who offer a unique opportunity to shape your More ❯

best practices: memoization, virtualization, code-splitting, lazy loading, minimizing re-renders; use React Profiler and browser devtools Secure frontend practices (XSS/CSRF mitigation, CSP, input sanitization) Testing with Jest and React Testing Library Understanding of modern build tooling (Vite/Webpack), bundling, and asset delivery Here's what we're looking for: Technical Skills Solid engineering experience across frontend More ❯

in the following would be advantageous: Latest versions of .NET AI, Machine Learning JavaScript, TypeScript and associated frameworks Containers, Docker, Kubernetes NoSQL Test tools such as xUnit, Cypress, Selenium, Jest, SoapUI This is an exciting opportunity to join a rapidly expanding company using the latest tools and technologies. If you are looking for a role of this nature, please contact More ❯