76 to 100 of 102 Jest Jobs in England

written ES6/2015+, React, Redux, Backbone/MarionetteASP.NET WebAPI 2 using C#Production experience of an ORM – Ideally Dapper or Entity Framework 6Testing Frameworks – Jest and/or FakeItEasyPatterns & Practices – SOLID principles, Functional vs Imperative programmingExperience with Entity Framework, Dapper or a similar ORM.Experience with Test Driven Development.Proficiency with code ...

modern JavaScript/TypeScript, HTML5, CSS, algorithms, and application design. Frameworks & Testing: Hands-on experience with React (or equivalent modern frameworks), unit testing (Jest), and E2E testing frameworks like Playwright. Tooling & Ecosystem: Familiarity with modern frontend build tools (Webpack, Rspack, Babel, NPM/Yarn). Data-Intensive Apps: Experience building ...

Angular Deep understanding of software architecture, design patterns, and API design principles Experience working with CI/CD pipelines, automated testing frameworks (e.g. Jest, Playwright), and version control Proven experience running large-scale production systems in AWS and working with Kubernetes/containerisation Strong debugging, performance optimisation, and problem-solving ...

knowledge of React, TypeScript, and Next.js.A deep understanding of modern frontend architecture, including state management, component patterns, and hooks.Experience with web testing frameworks (like Jest or Cypress) and CSS-in-JS libraries (such as Vanilla Extract or Emotion).A solid grasp of CI/CD processes, version control with ...

test 5th stage - Meet with our VP of 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, Segment, Twilio, Stripe Our team: technologists, academics, researchers, and innovators from all over the world. English ...

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 ...

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 ...

team, 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 to an environment where ...

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/ ...

high-performance RESTful APIs for large-scale SaaS environmentsTesting Excellence: Passionate about quality, with experience using automated backend testing frameworks (e.g., JUnit, Mocha/Jest)Mindset: A strong sense of ownership, an agile mindset, and excellent English communication skillsExperience working with RDF databases/graph databases and querying with SPARQLA ...

i18next, or comparable internationalization frameworks Understanding of language detection, translation management, interpolation, pluralization, and locale-aware UI behaviour Testing Strong testing practices using Vitest, Jest, or an equivalent test runner Experience with Testing Library and user-focused component testing Experience mocking APIs and network requests using MSW or comparable tooling ...

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 ...

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 ...

provide constructive, objective feedback. Excels in front-end development using ReactJS, JavaScript, and/or TypeScript. Is experienced in writing tests with libraries like Jest, Cypress, or similar. Understands how to create and maintain reliable, reusable libraries. Thrives on tackling complex technical challenges with creativity and precision. (Bonus) Has experience ...

functional/non-functional) and associated techPresentation skills - C-Suite clients and in-houseMentoring - non-AI SDETsInnovation - art of the possibleExperienced in Junit, Jest, PyTest, NUnit, Appium, WDIO, Selenium, Cypress, BrowserStack, Swagger, WireMock, Postman et alDevelopment frameworks: Spring, Angular, .NET, Node et alCI/CD: Jenkins, GitLab CI/… strategy covering all aspects of the SDLC process, development, automation, CI, and metricsHands on using Spring Java, Angular, Python, GitLab CI/CD, Junit, Jest, Cucumber, Bash, Gatling et alExperienced in helping teams evolve an Agile ‘Shift Left’ way of workingExperience of building advanced and feature rich test automation frameworks ...

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 ...

enjoy solving problems with your peers. Testing culture: You believe that code isn't complete until it's verified. Experience with testing frameworks (like Jest or Cypress ) is highly valued to ensure reliability. Performance focus: You understand that a slow app is a bad UX. You keep performance in mind ...

stage - Technical Interview 4th stage - Executive Leadership Interview 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 ...

ensure high-quality frontend delivery across Confluent Cloud-like stacks. You’ll build data-driven web apps using React/TypeScript, test with Jest and Playwright, and participate in CI/CD workflows. The role emphasizes modern frontend tooling, performance, and collaboration across teams to ship reliable UI features ...

Framework, nHibernate) plus caching strategies; experience modeling compensation, payroll, and equity data is a strong plus. Strong testing discipline including TDD and BDD, xUnit, Jest or Mocha, CI/CD automation, and quality gates—especially for calculation engines requiring reconciliation and regression coverage. Experience building analytics and reporting with … Framework, nHibernate) plus caching strategies; experience modeling compensation, payroll, and equity data is a strong plus. Strong testing discipline including TDD and BDD, xUnit, Jest or Mocha, CI/CD automation, and quality gates—especially for calculation engines requiring reconciliation and regression coverage. Experience building analytics and reporting with ...

Library, Storybook Mobile: React Native, TypeScript, React Navigation, React Hook Form, Reanimated, Firebase, Braintree Backend: .NET API (OpenAPI/Swagger) Testing & CI/CD: Jest, React Testing Library, Azure DevOps, CodePush Environment/Platform: Azure Cloud, templated infrastructure Key Responsibilities Development and maintenance of several customer-facing products, including websites … consuming REST APIs (experience with a .NET backend a plus). Experience with state management using React Context and hooks. Strong automated testing habits — Jest, React Testing Library. Confident with Git and CI/CD pipelines (Azure DevOps ideal). Excellent communication skills and a collaborative mindset to ensure teams ...

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. ...

only product ideas but also technology and data manipulation.TypeScript/React/Redux/Styled Components/Apollo GraphQL/Webpack/Jest/Cypress/PrettierWe are growing our UI team to develop new features for our exciting frontend product built in React, as well as maintaining existing features … passionate about.Follow me on Twitter for more roles and news @SebFintechTypeScript/React/Redux/Styled Components/Apollo GraphQL/Webpack/Jest/Cypress/Prettier ...

Define and evolve a pragmatic test pyramid for React Native - deciding where E2E is worth the weight and where logic belongs in faster layers (Jest, React Testing Library, component tests). Make deliberate calls about coverage, reliability, and speed trade-offs across the app. Set the bar for what "ready … testing experience, with a point of view on test data and environment strategy. OUR TECH STACK Mobile: TypeScript, React Native, Expo, EAS, GraphQL, Relay, Jest, React Testing Library, Maestro. Backend: Kotlin, PHP 8 (Symfony), AWS, Postgres, RabbitMQ, Docker, Kubernetes. Tooling and observability: GitHub, GitHub Actions, Jira, Confluence, Datadog, Sentry, Grafana. ...

campaigns on a daily basis. Our Tech Stack includes TypeScript, Node.js, React/Vue/Svelte, Vite, esbuild, Babel, pnpm/npm, GitHub Actions, Jest/Vitest, Playwright/Cypress, NestJS/Express, REST/GraphQL (check details from Stack Share Profile ) Responsibilities: Develop scalable, maintainable web applications regardless … higher – must be comfortable with technical communication, documentation, and client interactions Nice To Have: Monorepo setups (Nx, Turborepo), Storybook, Playwright/Cypress, Vitest/Jest Performance monitoring (Lighthouse, Web Vitals) and logging/observability Security best practices (CSP, SRI, OWASP, dependency auditing) CDN, edge functions, SSR/SSG, ISR architectures ...