26 to 41 of 41 Jest Jobs in London

experience with Next.js/Angular/Vue.js is beneficial Experience with mobile development frameworks like React Native is beneficial. Experience in Unit Testing with Jest Experience with technical leadership and mentorship to a team of engineers, guiding them in architecture, code quality, and best practices to ensure high-performing ...

Native is beneficial. Experience with GraphQL, preferably using Apollo Client with React for efficient data fetching and state management. Experience in Unit Testing with Jest Continuous Integration experience (Docker) A passion for coding and keeping up to date with new technologies frameworks and techniques Extensive experience in an Agile environment ...

reliable software delivery.You are an expert problem-solver who can debug complex, full-stack issues and maintain high standards for testing using frameworks like Jest or Cypress.You thrive on autonomy and ownership, with the entrepreneurial drive to take a vague problem statement through to a polished, high-impact execution.You ...

design capability across major providers; rounded understanding of database trade-offs – relational, NoSQL, graph and caching strategies. Strong engineering practices: CI/CD, testing (Jest, Cypress, React Test Library), release management and security-conscious development.A genuine passion for AI solutions and specifically for the complexity of delivering them to production ...

architecture design capability across major providers; rounded understanding of database trade-offs – relational, NoSQL,graphand caching strategies. Strong engineering practices: CI/CD, testing (Jest, Cypress, React Test Library), release management and security-conscious development. A genuine passion for AI solutions and specifically for the complexity of delivering them ...

understanding customer needs and the real‐world impact of their work. Is passionate about quality, with hands‐on experience in TDD and tools like Jest and React Testing Library. Values clean, maintainable code and enjoys discussing different ideas and approaches. Has experience mentoring and supporting other engineers, contributing ...

rendering. Deep knowledge of state management (RxJS, or React Query + custom streams) and data flow patterns for streaming + request/response. Testing: Jest/Vitest, React Testing Library, Playwright; strong mock/contract testing. Security: XSS mitigation, CSP, auth flows (OAuth), secure storage, anti phishing UX. CI/ ...

using generative AI tooling to accelerate delivery and maintain code quality Strong opinions loosely held Experience with the following frontend technologies: TypeScript, React, Webpack, Jest (or similar testing frameworks) Experience with the following backend technologies : Java, Spring, Swagger/OpenAPI or other API definition tools Minimum Qualifications Comprehensive relevant industry ...

Python/React Full Stack Developer Location: London - 5 Days On-Site Contract: 6 months Day Rate: £440 per day Inside IR35 Sector: Banking/Financial Services About the Role We are looking for an ...

Fiber, WebGL, Deck.gl ) Real-time data flows: Comfortable working with real-time data and async patterns (Websockets, workers) Writing testable, reusable code: Vitest/Jest/Playwright, Storybook, design systems Data visualisation: Presenting complex data intuitively; geospatial experience is a plus. UX/UI (desirable): A strong sense of user ...

issues across JS thread, native thread, and render pipeline. Experience with automated testing for mobile unit, integration, and end‐to‐end (e.g. Jest, Maestro, Appium). Familiar with App Store and Google Play submission, review processes, and release management. A collaborative, clear communicator who works well with product ...

Amazon Web Services) environment for back‐end development. Front‐end technologies: React, Redux, TypeScript, Node.js, Next.js, SCSS, and testing tools such as Jest, Enzyme, React Testing Library, and Cypress. Orchestrate test and deployment processes using CircleCI with GitHub and Maven. Integrate Contentful and ElasticPath as content and commerce engines, respectively. … Java Development Spring Boot Framework AWS Cloud Infrastructure React Application Development Automated Testing Practices Hard Skills Java Spring Boot React TypeScript Node.js Next.js SCSS Jest Cypress Maven Industry Keywords API Development Microservices Architecture Continuous Deployment A/B Testing Web Application Development Tools & Technologies CircleCI GitHub Contentful ElasticPath Optimizely #J ...

designs and requirements into high-quality interfaces. Develop reusable components using modern UI component libraries. Write and maintain unit tests using tools such as Jest or Jasmine. Work within Agile development teams and contribute to sprint planning, refinement and delivery. Ensure applications meet WCAG accessibility standards. Use Git for version … TypeScript/JavaScript (ES6+). HTML5 and CSS3, including responsive design. REST API integration. State management experience, ideally Redux or NgRx. Unit testing with Jest, Jasmine or equivalent. Git. Strong understanding of WCAG and accessible web development. Experience with modern UI/component libraries. Experience working within Agile development teams. ...

team can build on. Build and improve high-performance, low-latency interfaces that hold up under real, live market data. Write well-tested code (Jest, Cypress, or Playwright) and contribute to how the team reviews and documents its work. Split your time between shipping new features and keeping things healthy … professional frontend development experience, with excellent TypeScript, React, and Next.js. Experience with MUI or a similar component library. Solid testing practice with frameworks like Jest and Cypress or Playwright. Proficient with Git, Docker, and CI/CD workflows, and familiar with monorepo structures and tools (Turborepo, Yarn Workspaces, or similar ...

Our mission is to enable everyone to build wealth We reinvent how trading and investing work by creating exceptional products people love. That takes high standards, high velocity and engineers who own what they ship. ...

Our mission is to enable everyone to build wealth We reinvent how trading and investing work by creating exceptional products people love. That takes high standards, high velocity and engineers who own what they ship. ...