26 to 50 of 51 Jest Jobs in the UK excluding London

styling approaches (e.g. TailwindCSS, Flexbox, Grid) Experience building and maintaining Android applications Experience building and maintaining iOS applications Experience writing unit tests using Jest Experience with Expo for React Native development Experience implementing i18n (internationalisation) for multi-language/multi-region applications Experience working with native mobile features, such ...

Proficiency in Python, including machine learning libraries such as PyTorch or scikit-learn, and experience of large language model APIs. Competence in automated testing (Jest and pytest) and in Git and GitHub, including code review. A secure and careful approach to the handling of personal data. The ability to work ...

design — Express withOpenAPIor equivalent. Nice tohave: comfort with runtime type validation at trust boundaries — Zod, Yup, or similar. Nice tohave: experience writing unit andcomponenttests — Jest andReactTesting Library,Vitest, or equivalent. Nice tohave: containerisationfundamentals using Docker or an equivalent tool, and general scripting ability in Bash or PowerShell. Highly desirable: experience ...

design — Express withOpenAPIor equivalent. Nice tohave: comfort with runtime type validation at trust boundaries — Zod, Yup, or similar. Nice tohave: experience writing unit andcomponenttests — Jest andReactTesting Library,Vitest, or equivalent. Nice tohave: containerisationfundamentals using Docker or an equivalent tool, and general scripting ability in Bash or PowerShell. Highly desirable: experience ...

well enough to see what the framework is doing for you. Accessibility in practice: keyboard, focus, screen reader. Useful, not required TypeScript. Testing with Jest, Vitest or Playwright. #J-18808-Ljbffr ...

well enough to see what the framework is doing for you. Accessibility in practice: keyboard, focus, screen reader. Useful, not required TypeScript. Testing with Jest, Vitest or Playwright. #J-18808-Ljbffr ...

open to discussing and honing approaches for our team to improve our working practices* Have some experience of test-driven development and mocking libraries (Jest, Mockito)* Be familiar with collaborative documentation tools (Jira and Confluence)* Have some real knowledge of Agile practices and execution (Scrum, Kanban)* Wanting to learn ...

e.g., JWT). Familiarity with popular frontend development tools such as Node, NPM, CI/CD pipelines, DevOps practices, and performance testing frameworks like Jest and React Testing Library. Experience with performance and memory tuning using relevant tools. Benefits Competitive salary based on experience + Car Allowance. Flexible and hybrid ...

Front-end frameworks: Vue.js and React.js APIs: GraphQL and REST Databases: MSSQL, MySQL and PostgreSQL Git and version control best practices Testing frameworks (PHPUnit, Jest, Cucumber) Agile methodologies without the ceremony - we take a very lean approach Docker CI/CD and cloud hosting Architecture scalability performance tuning Education ...

applied experience Strong hands-on experience building enterprise web applications with React + TypeScript, including advanced component patterns. Strong experience with UI testing (e.g., Jest/React Testing Library and Cypress/Playwright) and systematic debugging/troubleshooting. Proven experience designing and delivering accessible, performant UIs (WCAG awareness, profiling, bundle ...

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 ...

systems (Vercel, GitHub Actions). Experience building or maintaining a design system. Experience with testing libraries and tools (Vitest, React Testing Library, Playwright, Jest). Experience using Tailwind or other utility-based CSS libraries. The stack Next.js React TypeScript Tailwind Typesense ClickHouse Vercel Shadcn/ui Jotai Why work ...

open to discussing and honing approaches for our team to improve our working practices. Have some experience of test-driven development and mocking libraries (Jest, Mockito). Be familiar with collaborative documentation tools (Jira and Confluence). Have some real knowledge of Agile practices and execution (Scrum, Kanban). Wanting ...

applied experience Strong hands-on experience building enterprise web applications with React + TypeScript, including advanced component patterns. Strong experience with UI testing (e.g., Jest/React Testing Library and Cypress/Playwright) and systematic debugging/troubleshooting. Proven experience designing and delivering accessible, performant UIs (WCAG awareness, profiling, bundle ...

e.g., JWT).* Familiarity with popular frontend development tools such as Node, NPM, CI/CD pipelines, DevOps practices, and performance testing frameworks like Jest and React Testing Library. Experience with performance and memory tuning using relevant tools.**What we offer**Join us and you’ll find a different ...

Front End applications using Angular and TypeScript Write clean, maintainable and well-tested code using modern engineering practices Build and maintain automated tests using Jest Contribute to CI/CD pipelines using GitLab CI/CD Support cloud-native deployments using AWS and container technologies Participate in architecture discussions, code … improve application performance, scalability and reliability Strong commercial experience developing applications with Node.js Experience building REST APIs using Express.js Experience writing automated tests using Jest Experience using GitLab CI/CD Understanding of Agile software delivery Experience working with Git Experience with some of the following technologies would be advantageous ...

Proven experience of the Angular UI framework. Worked in an Agile (Scrum) engineering environment. Cross-platform and cross-browser development experience. Experience using the Jest unit test framework. Experience using the Cypress browser testing framework. Company Benefits and Perks We believe that the best solutions are developed by teams ...

plain JavaScript to know what the compiled output does. Git in daily use. Useful, not required Monorepo tooling and shared packages. Testing with Vitest, Jest or Playwright. #J-18808-Ljbffr ...

plain JavaScript to know what the compiled output does. Git in daily use. Useful, not required Monorepo tooling and shared packages. Testing with Vitest, Jest or Playwright. #J-18808-Ljbffr ...

. Testing Practices: Proficient in writing and maintaining unit and integration tests, demonstrating an understanding of test-driven development (TDD) principles (e.g., Vitest, Playwright, Jest). Distributed Systems Knowledge: Familiarity of distributed systems, including building scalable and resilient services (e.g., Redis, Kafka, AWS infrastructure). Problem-Solving & Collaboration: Strong problem ...

frontend build process, with experience using tools such asNode.js, Webpack or Turbopack, and npm or Yarn. Understanding of frontend testing frameworks such as Cypress, Jest or React Testing Library 3+ years’ experience as a frontend developer. Nice to have Understanding of deployment strategies, scalability, and load balancing Familiarity with Unix ...

them. Build and consume API microservices. Work with SQL or NoSQL databases, and use Redis for caching and session handling. Write automated tests with Jest or Mocha, and practise test-driven development. Follow the GOV.UK Design System and GDS standards and patterns, and meet the GDS Service Standard. Make sure … Looking For Essential: BPSS check required. Strong, hands-on experience of JavaScript, TypeScript and Node.js. Experience with Express or Fastify. Experience writing tests with Jest or Mocha. Experience with SQL or NoSQL databases. Experience with Redis and with building or using API microservices. Experience working with AWS and Azure ...

Build and consume API micro services. Work with SQL or NoSQL databases, and use Redis for caching and session handling. Write automated tests with Jest or Mocha, and practise test-driven development. Follow the GOV.UK Design System and GDS standards and patterns, and meet the GDS Service Standard. Make sure … iteratively. Investigate and fix defects, and support services in live. What We are Looking For Experience with Express or Fastify. Experience writing tests with Jest or Mocha. Experience with SQL or NoSQL databases. Experience with Redis and with building or using API microservices. Experience working with AWS and Azure ...

Build and consume API micro services. Work with SQL or NoSQL databases, and use Redis for caching and session handling. Write automated tests with Jest or Mocha, and practise test-driven development. Follow the GOV.UK Design System and GDS standards and patterns, and meet the GDS Service Standard. Make sure … iteratively. Investigate and fix defects, and support services in live. What We are Looking For Experience with Express or Fastify. Experience writing tests with Jest or Mocha. Experience with SQL or NoSQL databases. Experience with Redis and with building or using API microservices. Experience working with AWS and Azure ...

Founded in 1999, the company has a premium listing on the Main Market of the London Stock Exchange and is focused on regulated and regulating markets across its B2B business. By leveraging its proprietary technology ...