51 to 69 of 69 Jest Jobs in England

ecosystem differences. Familiarity with RESTful APIs and mobile libraries for networking. 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 ❯

and contribute directly to the user experience. Your Day-to-Day Will Include: Designing and implementing scalable front-end solutions using React , TypeScript , and modern tooling (e.g. Redux, Webpack, Jest). Breaking down complex, ambiguous problems into clean, testable components. Performance tuningboost UI responsiveness, decrease load times, and streamline data management. Selecting and integrating third-party tools and libraries wisely More ❯

liaising with developers and testers to integrate the automation in development process to achieve CI/CD Should be able develop scripts using JavaScript, NodeJS, WebDriver IO/Selenium, Jest, Cucumber It would also be nice for you to have: Detailed understanding of CI/CD pipelines Hands on experience in including GitHub action workflows AWS certification or any cloud 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 ❯

training and personal development. Technical Skills: HTML CSS TypeScript React JavaScript object model JavaScript preprocessors eg webpack, Rollup, Babel SCSS/LESS Knowledge of performance testing frameworks Mocha and Jest The company offers a competitive salary, exposure to new technology, career progression and a great working environment with a talented team. Interviews are being held within the next couple of More ❯

training and personal development. Technical Skills: HTML CSS TypeScript React JavaScript object model JavaScript preprocessors eg webpack, Rollup, Babel SCSS/LESS Knowledge of performance testing frameworks Mocha and Jest The company offers a competitive salary, exposure to new technology, career progression and a great working environment with a talented team. Interviews are being held within the next couple of More ❯

ecosystem differences. Familiarity with RESTful APIs and mobile libraries for networking. 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 ❯

Support: Use the provided tools to create user-friendly interfaces. Continuous Learning: Embrace a culture of continuous learning and innovation. Your Profile: Technical Skills: Experience in React Native, Typescript, Jest & Detox, and Node.js. Communication Skills: Convey complex problems to team members. Agile and Lean Principles: Experience with agile and lean ways of working. If you're ready to shape digital More ❯

Support: Use the provided tools to create user-friendly interfaces. Continuous Learning: Embrace a culture of continuous learning and innovation. Your Profile: Technical Skills: Experience in React Native, Typescript, Jest & Detox, and Node.js. Communication Skills: Convey complex problems to team members. Agile and Lean Principles: Experience with agile and lean ways of working. If you're ready to shape digital More ❯

gRPC + protobuf, NATS, SQS Frameworks & Tools: Fiber, Express, Gin, Docker, AWS Amplify (plus) AWS Services: Lambda, ECS, ECR, RDS, CloudWatch, SQS, SNS, SES, Cognito, Redis, S3, CloudFront Testing: Jest, wire-mock, localstack Blockchain: Solana (Helius, Anchor framework, SPL token, Token 2022), Ethereum Monitoring: DataDog, CloudWatch Requirements 4+ years of backend development experience. Production experience with GoLang (preferred) and NodeJS. More ❯

be considered) • Expert-level proficiency in React, TypeScript, modern frontend frameworks and architectures • Strong understanding of state management, performance optimization, and scalable component-driven design • Experience with testing frameworks (Jest, Cypress, Playwright) • Comfort with open-source principles and contributions • Clear, confident communication in English (minimum C1, no heavy accents) • Ability to onboard quickly and deliver at startup pace • Proactive, independent More ❯

visualisations at scale Mentor peers on accessibility and performance-first development Tech Ecosystem You’ll Shape Design Tokens · Figma API · Storybook · React · Web Components · TypeScript · Tailwind CSS · Vite · NextJS · Jest · Cypress · Playwright What You Bring 8+ years in large-scale web apps, 2+ in design-system architecture Strong perspective on tokens, theming, multi-brand support Mastery of React + TypeScript More ❯

visualisations at scale Mentor peers on accessibility and performance-first development Tech Ecosystem You’ll Shape Design Tokens · Figma API · Storybook · React · Web Components · TypeScript · Tailwind CSS · Vite · NextJS · Jest · Cypress · Playwright What You Bring 8+ years in large-scale web apps, 2+ in design-system architecture Strong perspective on tokens, theming, multi-brand support Mastery of React + TypeScript More ❯

visualisations at scale Mentor peers on accessibility and performance-first development Tech Ecosystem You’ll Shape Design Tokens · Figma API · Storybook · React · Web Components · TypeScript · Tailwind CSS · Vite · NextJS · Jest · Cypress · Playwright What You Bring 8+ years in large-scale web apps, 2+ in design-system architecture Strong perspective on tokens, theming, multi-brand support Mastery of React + TypeScript More ❯

visualisations at scale Mentor peers on accessibility and performance-first development Tech Ecosystem You’ll Shape Design Tokens · Figma API · Storybook · React · Web Components · TypeScript · Tailwind CSS · Vite · NextJS · Jest · Cypress · Playwright What You Bring 8+ years in large-scale web apps, 2+ in design-system architecture Strong perspective on tokens, theming, multi-brand support Mastery of React + TypeScript More ❯

visualisations at scale Mentor peers on accessibility and performance-first development Tech Ecosystem You’ll Shape Design Tokens · Figma API · Storybook · React · Web Components · TypeScript · Tailwind CSS · Vite · NextJS · Jest · Cypress · Playwright What You Bring 8+ years in large-scale web apps, 2+ in design-system architecture Strong perspective on tokens, theming, multi-brand support Mastery of React + TypeScript More ❯

and Android using Ionic. Collaborate with backend teams on API integration and implementation. Write clean, maintainable code, adhering to best practice and team standards. Maintain effective test coverage using Jest and React Testing Library. Participate in code reviews, agile ceremonies, and technical discussions. Troubleshoot and resolve issues related to mobile app deployment. Key Skills & Experience Required Proven experience in building … Experience with hybrid/cross-platform development (Ionic framework). Familiarity with state management solutions such as Context API. Version control experience using GitHub. Knowledge of frontend testing practices (Jest, React Testing Library). Strong teamwork and communication skills, with the ability to work independently. Understanding of software architecture, design patterns, and engineering good practices. Experience troubleshooting and resolving mobile … JavaScript Developer, TypeScript Developer, Ionic Developer, Hybrid App Developer, Cross-Platform Developer, iOS Developer, Android Developer, React Native Developer, UI Developer, Application Developer, Software Engineer, Storybook, Context API, GitHub, Jest, React Testing Library, Azure, DevOps, .NET, CI/CD, YAML, Financial Services Developer, Wealth Management Technology Deerfoot Recruitment Solutions Ltd is a leading independent tech recruitment consultancy in the UK. More ❯

Contract x2 positions available Location: UK, Remote Day Rate: £400 per day outside IR35 Industry: EdTech About the Client Our client is an innovative education-technology company transforming how international students enrol at UK universities. Their flagship platform automates the More ❯

senior level contributions writing in TypeScript React PostgreSQL Bonus points for experience in high velocity and technically challenging roles Our tech stack Frontend: React Typescript GraphQL (Apollo Client) Playwright Jest Storybook + Chromatic Mantine GCP (Cloud Run) Backend: Node Typescript PostgreSQL GraphQL Yoga Jest Auth0 GCP (Cloud Run, Cloud SQL, Cloud Storage + more) All the other good stuff: GitHub More ❯