51 to 75 of 115 Jest Jobs in England

CI/CD Pipelines o Proficiency in Unit Testing REACT EXPERIENCE: o ReactJS, React Query, NodeJS, JavaScript, TypeScript, CSS, HTML o Testing tools like Jest, Cypress, Material UI o Experience with HTML, CSS, and writing cross-browser-compatible code o Experience with popular ReactJS workflows (such as Redux or MobX More ❯

in TypeScript, React, GraphQL, Redux, and CSS-in-JS Familiarity with the React reconciliation process and browser debugging tools Experience in functional programming and Jest for testing Bonus Experience Knowledge of RxJS, Node.js, WebSockets, Vite/ESBuild, Docker, and more Familiarity with back-end technologies such as C#, Kafka, and More ❯

meet project needs Useful experience Node.js React/React Native MySQL/PostgreSQL Typescript Serverless/Lambda Version control - Git AWS cloud/CDK Jest HTML/CSS/JS/SASS AI/ML EDI Manufacturing software (ERP) While the above knowledge and skills are preferred, we are open More ❯

housing. Collaborating with a cross-functional team of developers, product owners, and tech leads. Participating in code reviews, writing clean unit tests (e.g. with Jest), and contributing to system architecture discussions. 💡 What We’re Looking For: Strong hands-on experience with Node.js development. Knowledge of microservice architecture and tools like More ❯

React JS. Familiarity with cloud platforms like Azure and data retrieval libraries such as react-query. Testing Savvy: Experience with testing frameworks like Playwright, Jest, and React Testing Library. Design and Usability: Working knowledge of Material-UI library and a keen eye for UX improvement. Collaborative Spirit: Strong communication and More ❯

React JS. Familiarity with cloud platforms like Azure and data retrieval libraries such as react-query. Testing Savvy: Experience with testing frameworks like Playwright, Jest, and React Testing Library. Design and Usability: Proficiency in the Material-UI library and a keen eye for UX improvements. Collaborative Spirit: Strong communication and More ❯

React JS. Familiarity with cloud platforms like Azure and data retrieval libraries such as react-query. Testing Savvy: Experience with testing frameworks like Playwright, Jest, and React Testing Library. Design and Usability: Working knowledge of Material-UI library and a keen eye for UX improvement. Collaborative Spirit: Strong communication and More ❯

and effective teamwork. Proven ability to troubleshoot and debug front-end issues, delivering clean, well-documented, and maintainable code. Experience with testing frameworks like Jest and Playwright is a plus. Effective communication and collaboration skills to work efficiently within a team and independently. Prior experience in the Fintech domain is More ❯

or AWS CloudFormation. Familiarity with ELK stacks. Design : Figma APIs : REST, GraphQL Back-End : Node.js, Express.js CI/CD : CircleCI, GitHub Actions Testing : Cypress, Jest, Karma What You Can Expect from Our Recruitment Process: We'll start by reviewing your CV. Then, you'll have a one-hour interview with More ❯

Professional experience working with Git, Git Flow Knowledge of CSS preprocessors, (eg. SASS/LESS/CSS-in-JS/Tailwind) Experience testing with Jest/React Testing Library Desirable experience with DevOps tools Desirable experience with Websockets Desirable experience with ES6, Styled Components, Material UI Desirable experience with OpenFin More ❯

Handling: RESTful APIs, state management (Redux, Zustand, Recoil), offline storage, real-time data (WebSockets, Firebase, SignalR). Testing & Quality Assurance: Unit and integration testing (Jest, React Testing Library), UI testing (Detox/Appium), automated testing pipelines. Deployment & DevOps: CI/CD pipelines, App Store & Google Play deployment, OTA updates, crash More ❯

and common workflows such as feature branches. Experience with Umbraco CMS. Experience with component libraries or design systems. Basic front-end testing knowledge (e.g., Jest, React Testing Library). Experience with headless integrations. Experience consuming REST APIs. Experience with AI-assisted technologies. Experience Minimum of 3 years of professional front More ❯

TypeScript (3+) CSS3 HTML5 Desirable Skills: VueJS 2 (not Vue 3) JSX/TSX SASS/SCSS React (Hooks) Playwright (end-to-end testing) Jest (unit testing) LitJS (Web Components) Storybook Why Join Us? Work on cutting-edge projects with a talented and passionate team. Opportunity to grow and learn More ❯

Django REST framework, pandas) Docker, Postgresql, Airflow, Redis, Kafka CircleCI & Terraform AWS services (RDS, Elasticache, EC2, ECS, Fargate, Lambda, Batch, etc.) JIRA, Sentry, Mixpanel Jest, react-testing-library, Cypress Leadership/mentoring Mobile-first and PWA Problem-solving Senior Front End Engineer rewards: A base salary of circa More ❯

AA accessibility compliance . Hands-on experience with Azure DevOps CI/CD pipelines and micro frontend architecture . Competence in modern testing frameworks: Jest, React Testing Library, Enzyme . Experience working within Agile development teams . Desirable: Involvement in architectural decisions (e.g. micro frontends, performance scaling). Comfortable leading More ❯

experience or equivalent combination of education, training, and experience; Good to have: Experience with Next.js Experience with Redis/Memcached Experience with PHPUnit, mocha, jest, or similar; Experience in server technologies, specifically AWS; Experience in Docker applications will be a plus; Familiarity with open-source software a plus; Familiarity with More ❯

skills Formal training or certification in software engineering concepts and applied experience. Advanced knowledge of front-end technologies such as Typescript, AngularJS, React, Vite, Jest, D3, and related libraries/frameworks. Hands-on experience managing a work portfolio independently and engaging directly with stakeholders and product owners. Practical experience with More ❯

customers. The Technology Our applications use the following technology: Back-end: Node, Express, Lambda, Git, ElasticSearch, DynamoDB Front-end: ES6, React, Redux, Gatsby Testing: Jest, React Testing Library, Mock Service Worker APIs: REST DevOps: AWS serverless technologies, Terraform, Docker You should apply if You have 5+ years of full-stack More ❯

Handling: RESTful APIs, state management (Redux, Zustand, Recoil), offline storage, real-time data (WebSockets, Firebase, SignalR). Testing & Quality Assurance: Unit and integration testing (Jest, React Testing Library), UI testing (Detox/Appium), automated testing pipelines. Deployment & DevOps: CI/CD pipelines, App Store & Google Play deployment, OTA updates, crash More ❯

OAuth etc Familiarity with modern front-end build pipelines and tools Experience with popular front-end development tools such as Yarn, Webpack, Vitjs, StoryBook, Jest, Eslint, Prettier, Husky, etc. Ability to understand business requirements and translate them into technical requirements Experience with code versioning tools such as Git Experience with More ❯

Kubernetes, React & React Native, TypeScript, MobX, Redux, Stylus and SASS, Jenkins (we deploy to production as soon as we finish a feature), Behat, PHPUnit, Jest, Selenium, Maestro and Detox. How you'll have an impact Own and optimise the delivery process to ensure features reach customers efficiently, contributing directly to More ❯

PHP 8, Symfony 6 & 7, Kotlin, AWS, MySQL, PostgreSQL, RabbitMQ, Docker, Kubernetes, React & React Native, TypeScript, MobX, Redux, Stylus and SASS, Jenkins, Behat, PHPUnit, Jest, Selenium, Maestro and Detox. How you'll have an impact Manage and mentor your Engineering Managers to ensure that they and their teams are high More ❯

is written in TypeScript. We're using Vanilla Extract for styling paired with React Aria primitives. We write tests with React Testing Library and Jest, as well as Playwright. Finally, we deploy to Kubernetes in production, running on Amazon Web Services. Our technologists are at the very heart of Starling More ❯

about our technology choices. These are some of the things we use at the moment: TypeScript, React, styled-components Python, NodeJS ️ PostgreSQL, BigQuery, MySQL Jest, React Testing Library, Cypress, pytest ️ AWS, GCP Kubernetes, Docker, Terraform, GitHub, CircleCI How we expect you to work ️ We expect you to work in these More ❯

Skills Required: 3+ years of experience professionally developing web applications using React Excellent TypeScript/JavaScript programming skills Experience with testing libraries such as Jest or Playwright An appreciation for design and aesthetic details and their impact on the user experience Knowledge of Git, node and npm/yarn Self More ❯