351 to 362 of 362 Jest Jobs

over 2 year's experience coding in JavaScript. Key Skills Required Have knowledge and experience with JavaScript, React Native and Typescript. You must be experienced in testing, preferably using Jest or Detox. Have experience developing both Android and iOS applications. Have an analytic and problem-solving mindset. Have experience delivering in an Agile Methodology. This role is mostly remote, with More ❯

with ES2016+ and asynchronous programming concepts. You have good knowledge of React and are familiar with other frameworks. You like and have knowledge of testing with tools such as jest, testing library and/or cypress. You are familiar with responsive applications and have knowledge of css. You are passionate and like to keep up to date with different technologies. More ❯

well tested software are experienced in building backend services with NodeJS and Nest.js (or similar) are experienced in developing REST APIs, WebSockets and writing OpenAPI documentation are experienced in Jest (or similar) for unit and integration testing are able to set up a NodeJS build pipeline identify and address performance bottlenecks and troubleshoot application issues are able to apply security More ❯

with a strong understanding of React Experienced with NextJS, preferably app router You consider unit testing a key part of software delivery You have used testing libraries such as Jest or Vitest and React Testing Library A drive to collaborate with the team and share your opinions to push our technology forwards Skills that are a nice to have TailwindCSS More ❯

of the development process Optimize performance , ensuring speed and scalability across web applications Design, prototype, and validate UI concepts , ensuring technical feasibility Strengthen our test coverage , using tools like Jest to maintain quality Be part of a dynamic, supportive team where you can grow, innovate, and make a real impact What We’re Looking For Strong knowledge of HTML, CSS More ❯

guidelines Handy, but not essential: Experience mentoring other developers Experience working on a multi-national codebase Previous experience in the energy industry Our stack: React GraphQL & Apollo Styled Components Jest & React Testing Library TypeScript Storybook Vercel (desirable) We would prefer someone who can work in our London office but will consider remote candidates. However, you do need to be able More ❯

Essential Experience leading teams or mentoring other developers Experience working on a multi-national codebase Previous experience in the energy industry Our Stack React GraphQL & Apollo Styled Components & SASS Jest & React Testing Library TypeScript Storybook Xstate (desirable) We would prefer someone who can work in our London office but will consider remote candidates. However, you do need to be able More ❯

Senior Front-End Engineer Department: Engineering Employment Type: Permanent - Full Time Location: UK - Remote Description When you join Exclaimer you will join a global award winning SaaS provider with an exceptional revenue rate, ambitious growth plans, and an exciting work More ❯

projects Write unit tests and work on improvements of the current platforms - You must have extensive experience with using React and also have the capability to write unit tests (Jest, Enzyme, React-Testing Library). - Experience in implementation of responsive design based on provided mockups. This is a 6-month contract - OUTSIDE IR35 - Starting ASAP #J-18808-Ljbffr More ❯

A strong interest in working with large data sets. Ability and motivation to write clean code and refactor apps. Testing (Unit Testing and End to End for instance with Jest). Experience with big data technologies such as Kafka and Hive. Hands-on experience on AWS and Kubernetes as developer. Proficient communication skills in English, especially on a technical level. More ❯

you sweat the details in layout, motion, spacing, and polish Deep understanding of modern front-end principles including component architecture, state management, and accessibility Familiarity with testing frameworks (e.g., Jest, Vitest, React Testing Library) and performance optimization strategies Experience collaborating with design teams and contributing to scalable design systems Proven ability to clearly articulate technical and visual ideas in writing More ❯

essential: Experience leading teams or mentoring other developers Experience working on a multi-national codebase Previous experience in the energy industry Our stack: React GraphQL & Apollo Styled Components & SASS Jest & React Testing Library TypeScript Storybook Xstate (desirable) We would prefer someone who can work in our London office but will consider remote candidates. However, you do need to be able More ❯