51 to 75 of 140 Jest Jobs in the UK

internal/external APIs and services. Owning features from initial planning through to deployment, ensuring they deliver real value. Writing reliable, well-tested code, using tools such as pytest, Jest with React Testing Library, Storybook, and Cypress for end-to-end coverage. Monitoring performance and stability through observability tools, keeping our platform running smoothly. Champion knowledge-sharing by crafting documentation More ❯

deployment (e.g., GitHub Actions, CodePipeline). Ensure security, scalability, and performance best practices in all cloud-based solutions. Implement unit tests, integration tests, and end-to-end testing using Jest, Mocha, or other frameworks. Monitor, troubleshoot, and optimize existing systems for performance and cost-efficiency. Participate in agile ceremonies and contribute to architecture/design discussions. More ❯

React.js and TypeScript. Collaborate with designers to transform wireframes and prototypes into functional, responsive interfaces using Tailwind CSS for styling. Write automated tests using tools such as Cypress or Jest to ensure functionality and prevent regressions. Contribute to the continuous improvement of team workflows and coding standards. Experience Required Proven experience web applications. Knowledge of integrating and consuming RESTful APIs. More ❯

in the following would be advantageous: Latest versions of .NET AI, Machine Learning JavaScript, TypeScript and associated frameworks Containers, Docker, Kubernetes NoSQL Test tools such as xUnit, Cypress, Selenium, Jest, SoapUI Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy. More ❯

mobile libraries for networking. Experience with performance and memory tuning tools. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud message APIs and usage of push notifications. Knowledge of CI/CD pipelines, code signing More ❯

you ahead of the curve .NET (8) JavaScript (ES6+)/TypeScript Node JS Azure Services Application monitoring practices, such as metrics, tracing and logging Testing frameworks (e.g. Playwright, XUnit, Jest, Enzyme, React Testing Library & Nightwatch) Building software with a test-first approach (TDD, BDD) Experience with build and deployment pipelines (CI/CD) using Azure DevOps Knowledge of Modern Architecture More ❯

contributing to wider engineering and business initiatives that help us further scale our products as we continue to grow. Our tech stack Mobile Typescript, React Native, Expo, GraphQL, Relay, Jest, React Testing Library, Maestro Web Typescript, React, NextJS, Redux Toolkit, SCSS Modules, React Testing Library, Cypress, Turborepo Backend/Infrastructure PHP 8 (Symfony), Kotlin, MySQL, RabbitMQ, AWS, Docker, Kubernetes Tooling More ❯

automation, CI & deployment tooling such as Git & Actions 2-4 years experience with frameworks and languages: React, Typescript, State Management (Zustand/Redux) You are already Unit Testing with Jest or React-Testing-LIbrary You are aware of the impact of performance & accessibility and understand techniques for improving load and render times. You will have as much passion in HOW More ❯

you: Have experience with SaaS products running 24/7 on a major cloud vendor. Solid understanding of RESTful APIs, microservices architecture, and asynchronous programming. Experience with testing frameworks (Jest, Mocha, Chai, Storybook, React Testing Library) and automated testing methodologies (Cypress). Knowledge of containerization technologies (Docker, Kubernetes) Total Rewards Our workforce deserves fair and competitive pay that meets them More ❯

of a high-impact platform. If you're passionate about clean code, scalable architecture, and modern tooling-this one's for you! ️ Tech Stack: ️ React.js Node.js TypeScript REST APIs Jest/Enzyme/Cypress ️ AWS Interested? Apply now or send your latest CV to ASAP! If you haven't heard back within 48 hours, please assume your application was not More ❯

of a high-impact platform. If you're passionate about clean code, scalable architecture, and modern tooling—this one's for you! Tech Stack: React.js Node.js TypeScript REST APIs Jest/Enzyme/Cypress AWS Interested? Apply now or send your latest CV to ASAP! If you haven’t heard back within 48 hours, please assume your application was not More ❯

would be advantageous but is not a prerequisite Good software engineering principles eg Version control/Git, issue tracking, documentation etc Node.js Front end development tools and libraries like jest, rollup etc Experience with connected devices Web/UX design appreciation Figma or similar Full stack software development If you are seeking a role of this nature, please get in More ❯

in the following would be advantageous: Latest versions of .NET AI, Machine Learning JavaScript, TypeScript and associated frameworks Containers, Docker, Kubernetes NoSQL Test tools such as xUnit, Cypress, Selenium, Jest, SoapUI This is an exciting opportunity to join a rapidly expanding company using the latest tools and technologies. If you are looking for a role of this nature, please contact More ❯

Ionic Collaborate with UX designers to translate wireframes into polished, user-centric interfaces Build and maintain component libraries using Storybook Write clean, maintainable code and develop robust test coverage (Jest, React Testing Library) Work within agile teams, participating in ceremonies and driving continuous improvement Integrate front-end components with APIs and back-end services Act as a subject matter expert More ❯

API development Event Driven Architecture, Event Systems Messaging Queues WebSockets SQL, NoSQL DevOps - CI/CD, Docker, GitHub. Desirable skills: WebAssembly IaC AWS Cloud Development Kit Integration testing using Jest or similar NextJS This is an urgent vacancy so if you are interested then please apply quoting reference 102889. React | TypeScript | NodeJS | AWS | Event driven Architecture | CDK | Lambda | Cognito | S3 More ❯

Ionic Collaborate with UX designers to translate wireframes into polished, user-centric interfaces Build and maintain component libraries using Storybook Write clean, maintainable code and develop robust test coverage (Jest, React Testing Library) Work within agile teams, participating in ceremonies and driving continuous improvement Integrate front-end components with APIs and back-end services Act as a subject matter expert More ❯

API development Event Driven Architecture, Event Systems Messaging Queues WebSockets SQL, NoSQL DevOps - CI/CD, Docker, GitHub. Desirable skills: WebAssembly IaC AWS Cloud Development Kit Integration testing using Jest or similar NextJS This is an urgent vacancy so if you are interested then please apply quoting reference 102889. React TypeScript NodeJS AWS Event driven Architecture CDK Lambda Cognito S3 More ❯

resolve complex software issues, including network-level troubleshooting. Collaborate closely with cross-functional teams including firmware, support, and production. Champion strong testing practices across the stack using tools like Jest and Vitest . What We're Looking For Expert-level experience in backend development with TypeScript . Solid understanding of AWS cloud infrastructure and infrastructure-as-code (IaC), ideally using More ❯

with RESTful APIs. Hands-on experience with bundlers such as RSPack or Vite. Knowledge of state management tools like zustand or valtio. Experience with testing frameworks such as Vitest, Jest, or React Testing Library. Proficiency with version control systems like Git. Understanding of CI/CD pipelines and deployment practices. Awareness of web accessibility standards and performance optimisation techniques. Strong More ❯

applications Proficiency in React and Next.js Experience with hybrid/cross-platform development (Ionic) Knowledge of state management (Context API) Understanding of GitHub version control Experience with frontend testing (Jest, React Testing Library) Strong teamwork and communication skills Ability to work independently and collaboratively Experience troubleshooting mobile app deployment issues Knowledge of software architecture, patterns, and best practices Desirable Skills More ❯

A team player with a desire to learn more • You like a challenge and are willing to take responsibility Desirable Skills: • Prototyping and Wireframing • Experience using Javascript testing frameworks (Jest, QUnit etc.) About us KION Supply Chain Solutions (KION SCS) is an operating unit of the KION Group, consisting of the two strong and successful brands Dematic and DAI. Dematic More ❯

a production environment. Strong front-end skills with?TypeScript?(JavaScript knowledge also valued) Familiarity with?REST APIs Solid understanding version controlsuch as Git. Experience with testing React applications using JEST or vitest Team-oriented mindset with strong communication skills Self-motivated and proactive in your approach to learning and delivery Would be great, but not essential if you also had More ❯

with React Native Proficiency in TypeScript (JavaScript also valued) Experience consuming REST APIs in mobile apps Solid understanding version controlsuch as Git Solid experience with testing React applications using JEST and vitest Strong collaboration and communication skills A proactive, self-directed approach to engineering challenges Would be great, but not essential if you also had: Experience in native mobile development More ❯

for designing workflows Familiarity with CI/CD pipelines (e.g., Jenkins, GitLab CI) and containerization (e.g., Docker, Kubernetes) Knowledge of unit testing and integration testing frameworks (e.g., JUnit, Mockito, Jest, React Testing Library) You may be assessed on key critical skills relevant for success in this role, such as risk and controls, change and transformation, business acumen, strategic thinking, digital More ❯

Strong front-end skills with TypeScript (JavaScript knowledge also valued). Familiarity with REST APIs. Solid understanding of version control such as Git. Experience with testing React applications using JEST or Vitest. Team-oriented mindset with strong communication skills. Self-motivated and proactive in your approach to learning and delivery. Would be great, but not essential if you also have More ❯