276 to 300 of 359 Jest Jobs

lead developers on methodologies and optimization techniques. Requirements: Expertise in data modeling, design, manipulation, optimization, and industry best practices. Experience with test-driven development using frameworks like Cypress, Serenity, Jest, and Karma. Solid understanding of architectural principles such as domain-driven design, event-driven systems, micro-frontends, and microservices. Ability to lead and partner with internal and external technical resources. More ❯

Senior React Native Developer opportunity. Interviews are taking place shortly! Keywords: Senior React Native Developer, Mobile App Development, UI/UX, iOS, Android, Redux, RESTful APIs, GitHub, MSSQL, Mocha, Jest, Clean Code, Agile, FinTech, Hybrid Working, London, App Store, Google Play, Mobile App Launch Established in Didsbury, Connexa Technology Ltd is becoming one of the UK's fastest growing IT More ❯

Senior React Native Developer opportunity. Interviews are taking place shortly! Keywords: Senior React Native Developer, Mobile App Development, UI/UX, iOS, Android, Redux, RESTful APIs, GitHub, MSSQL, Mocha, Jest, Clean Code, Agile, FinTech, Hybrid Working, London, App Store, Google Play, Mobile App Launch Established in Didsbury, Connexa Technology Ltd is becoming one of the UK's fastest growing IT More ❯

Familiarity with continuous integration and development tools Ability to create database schemas supporting business processes Experience with TypeScript, Cordova, native Android/iOS development, RAIL, PWA, SSR, Node, Cypress, Jest Full-stack experience is a bonus, especially with Ruby or Elixir What We Are Looking For Proven experience in developing complex JavaScript SPAs Experience with React and Redux Familiarity with More ❯

types! We also use d3, Formik, and Zustand to build out the products, and styled-components and tailwind to make them pretty. And then we test them with vitest, jest, and playwright. If you're also interested in the backends, here's some other tech we use: PHP, NodeJS, Docker, Elastic, Redis, and all the services offered by AWS. We More ❯

party services. Understanding of software development principles and best practices. Experience with version control systems (Git). Experience with cloud platforms (AWS) is a plus. Experience with testing frameworks (Jest) is a plus. Excellent problem solving and debugging skills. Strong communication and collaboration skills. Ability to work independently and as part of a team. Experience in the property management or More ❯

Strong knowledge of web accessibility standards and experience using screen readers for a solid understanding of their behaviour ( JAWS , NVDA OR VoiceOver ). Testing experience with tools such as Jest , React Testing Library , Playwright , or Cypress. Familiarity with CI/CD , version control (Git), and semantic versioning. Experience documenting components using Storybook or similar tools and eventually training other developers More ❯

Strong knowledge of web accessibility standards and experience using screen readers for a solid understanding of their behaviour ( JAWS , NVDA OR VoiceOver ). Testing experience with tools such as Jest , React Testing Library , Playwright , or Cypress. Familiarity with CI/CD , version control (Git), and semantic versioning. Experience documenting components using Storybook or similar tools and eventually training other developers More ❯

the future of user experience. Continuous learning , with support for ongoing training and professional growth. Team Tech Stack Frontend: React Backend: Nest.js, Python/fastapi, LangChain Test Automation: Pact, Jest, Cypress, and Pytest (including AI test automation) Infrastructure: AWS ECS, PostgreSQL, Kafka (migrating from RabbitMQ) Infrastructure as Code: Terraform (using native AWS services where possible) CI/CD: GitHub-based More ❯

the future of user experience. Continuous learning , with support for ongoing training and professional growth. Team Tech Stack Frontend: React Backend: Nest.js, Python/fastapi, LangChain Test Automation: Pact, Jest, Cypress, and Pytest (including AI test automation) Infrastructure: AWS ECS, PostgreSQL, Kafka (migrating from RabbitMQ) Infrastructure as Code: Terraform (using native AWS services where possible) CI/CD: GitHub-based More ❯

a modern tech stack. Your work will shape the tools that thousands of developers rely on every day to write, test, and ship code faster. Leverage tools like Vite, Jest, and Storybook to develop and showcase UI components in isolation. You'll play a key role in building scalable, performant, and accessible user interfaces. Use MUI/Material-UI and More ❯

scale Angular (v12 +) applications. Deep hands-on knowledge of Angular, Angular Material and Material CDK, Nx monorepos, NGXS/NgRx/Redux state management, RxJS, and testing with Jest/Jasmine/Cypress/Playwright. Laser-focused on business impact and measurable outcomes. You take full accountability for features from concept through production, demo work every sprint, and rapidly More ❯

scale Angular (v12 +) applications. Deep hands-on knowledge of Angular, Angular Material and Material CDK, Nx monorepos, NGXS/NgRx/Redux state management, RxJS, and testing with Jest/Jasmine/Cypress/Playwright. Laser-focused on business impact and measurable outcomes. You take full accountability for features from concept through production, demo work every sprint, and rapidly More ❯

junky and obsessed with getting 100% Lighthouse scores Handles Eloquent/ORM with MySQL/PostgreSQL efficiently and knows how to debug slow queries Automated tests using Playwright, Pest, Jest or similar are a natural part of your daily work Building re-usable Components with Storybook using Vue gives you joy Building a component-based front-end using Vue.js and More ❯

back end development. Strong capability in React & similar modern front-ends. Python experience & associated frameworks (Django, Flask, FastAPI) Must have solid grasp of OOP principles Worked with testing frameworks (Jest, PyTest, Playwright, etc) Exposure across cloud services & relational databases A natural instinct to move fast & break things, learn what works, & iterate quickly. Someone who holds themselves to the highest standard More ❯

types! We also use d3, Formik, and Zustand to build out the products, and styled-components and tailwind to make them pretty. And then we test them with vitest, jest, and playwright. If you're also interested in the backends, here's some other tech we use: PHP, NodeJS, Docker, Elastic, Redis, and all the services offered by AWS. We More ❯

and best practices (e.g. WCAG and WAI-ARIA) Understanding of how screen readers operate and experience using them (e.g. VoiceOver, JAWS, NVDA) Experience with web testing frameworks (e.g. Vitest, Jest, React Testing Library, Playwright, Cypress) An understanding of how components are designed and the ability to work closely with designers to interpret and implement component specifications to a high standard More ❯

in frontend web development Expert knowledge of React, TypeScript, Next.js Deep understanding of modern frontend architecture (state management, component patterns, hooks, etc.) Experience with web testing frameworks (e.g. Vitest, Jest, React Testing Library, Playwright, Cypress) Experience with CSS-in-JS libraries (e.g. Vanilla Extract, Emotion, Styled Components) Familiarity with CI/CD processes and version control (e.g. Git) Experience contributing More ❯

code Remix or Nextjs (or you're excited to learn remix ) – You understand how to navigate the frameworks and how SSR works Testing – You’ve used tools like Vitest, Jest, or Testing Library to test components and user flows Communication – You write clearly, ask thoughtful questions, and give kind, constructive feedback A keen eye for UX – You’ll work with More ❯

. You have used any state management tools such as Redux, Flux, ReCoil, MobX (etc). You wrote unit and end-to-end tests using tools such as Mocha, Jest or similar. Bonus points if you've worked with Material UI and Webpack. This job likely isn't for you if: You need detailed, step-by-step instructions to work More ❯

the role Technology We're pragmatic about our technology choices. These are some of the things we use at the moment: Python ️PostgreSQL, BigQuery, MySQL TypeScript, React, styled-components Jest, React Testing Library, Cypress, pytest ️AWS, GCP ECS Fargate, Docker, Terraform, GitHub Actions How we expect you to work We expect you to work in these ways, as well as More ❯

and implement user & system metrics and observability as you go to continually learn, assess and improve 9fin's platforms and products. Our Frontend Stack React 18 Typescript React query Jest, React Testing Library, Playwright Storybook Launch darkly feature flagging Next.js Vite About You This role will be a great fit if you: Experienced with React, modern ES6 and TypeScript to More ❯

If you're an experienced engineer with extensive knowledge about Frontend Web development, who also has a passion for building delightful user experiences, join us! As an Angular/TypeScript Software Engineer, you will be responsible for building front end More ❯

Job Description Senior Fullstack Engineer (React & TypeScript) - Capital Markets FinTech c.£80-100k [London] Building Cutting edge data visualisation libraries About the Role: Volition has partnered with a rapidly scaling FinTech who are looking for a highly skilled Senior More ❯

web applications using React, Next.js, and TypeScript Lead frontend architecture and design within your squad Champion accessibility and performance best practices Write robust unit and end-to-end tests (Jest, Playwright/Cypress) Mentor developers and drive high-quality code through reviews Collaborate with cross-functional teams to deliver impactful features What You Bring: Extensive frontend development experience Deep knowledge … architecture Strong testing skills and experience with Storybook and cloud platforms (Azure a plus) A passion for clean code, collaboration and continuous improvement Tech: Microsoft Azure | React | Typescript | Next.js | Jest | Storybook | Playwright | Cypress | Server Side Rendering (SSR) | Static Generation (SSG) We take our inspiration from pets in embracing people from all walks of life, and we value, respect and celebrate More ❯