51 to 75 of 132 Jest Jobs

Software Engineer III (Full Stack)

Hiring Organisation
Elsevier
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
Experience with Git version control Experience with modern IDEs (IntelliJ/VS Code) and refactoring tools Experience with test-driven development and mocking libraries (Jest, Mockito) Familiarity with Jira and Confluence Knowledge of Agile practices (Scrum, Kanban) Desirable familiarity with AI coding tools (GitHub Copilot, Claude, Codex, Antigravity) and Agentic ...

UI / NextJS Developer

Hiring Organisation
DNS Info Ltd
Location
Glasgow, Glasgow City, City of Glasgow, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £450/day Inside IR35
Redux, Zustand, Context API or similar state-management frameworks. Experience with Next.js SSR, SSG and ISR. Experience with Front End testing frameworks such as Jest, React Testing Library or Cypress. Experience with CI/CD and cloud-based application deployment. Understanding of web performance optimization and accessibility standards. Experience Level ...

Software Engineer (React/Node.js) - Hybrid

Hiring Organisation
Genesis10
Location
Richfield, Minnesota, United States
Employment Type
Permanent
Salary
USD Hourly
issue identification 2+ years of experience with React Native Experience using one or more of the following: GraphQL, Git, NPM, Yarn, Babel, Webpack, Typescript, Jest, Mocha, Chai, Cypress, React Query, Tan Stack, Apollo Client, React Hooks, Fetch API, Lighthouse, Fastify, Koa, Chrome dev tools Understanding of Agile processes, CI/ ...

Java Developer Integrated Financial Crime (IFC)

Location
Glasgow, Scotland, United Kingdom
pipelines (e.g., Jenkins, GitLab CI) and containerisation technologies (e.g., Docker, Kubernetes). Knowledge of unit testing and integration testing frameworks (e.g., JUnit, Mockito, Jest, React Testing Library). This role will be based in Glasgow. Our Work Experience is the combination of everything that's unique about us: our culture ...

Frontend Software Engineer

Location
Hunmanby, England, United Kingdom
sharing types where practical Testing and quality Write and maintain automated tests across the testing pyramid: unit and component tests (for example Vitest or Jest with React Testing Library) and end‐to‐end tests (for example Playwright) Use API mocking (for example Mock Service Worker) to test components and flows ...

Frontend Architect

Location
Greater London, England, United Kingdom
observability for the frontend (RUM, logging, error tracking). Experience with frontend testing strategies, including unit, integration, and end-to-end testing (e.g., Jest, Vitest, React Testing Library, Playwright, Cypress). Experience collaborating closely with UX/UI designers to turn wireframes and design systems into accessible, performant experiences ...

Front End Developer (Node.js/Angular/AWS)

Location
Newcastle upon Tyne, England, United Kingdom
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 ...

React Frontend Developer

Location
Greater London, England, United Kingdom
work effectively in a fast-moving environment Nice to have Data visualisation or dashboard experience Tailwind CSS or component libraries Playwright, Cypress, Vitest or Jest Cloud platforms and CI/CD Python/backend experience AI/ML or data-driven products Experience in a start-up or scale ...

Full Stack Engineer — React & Node

Location
United Kingdom
Management and Azure DevOps CI/CD• Implement robust error handling, logging and monitoring using Application Insights• Write unit and integration tests using Jest and Playwright, maintaining high test coverage• Participate in code reviews and architecture discussions, contributing to technical decision-making• Work in two-week sprints with daily collaboration ...

Front-End Developer - Amsterdam

Hiring Organisation
HELPLINE
Location
Amsterdam, Noord-Holland, Netherlands
Employment Type
Permanent
Salary
EUR Annual
/Signals Experience or interest in developing code with AI tools State management (NGXS or similar) and REST/BFF integration patterns Unit testing (Jest/Vitest) and E2E testing (Cypress) Web components/elements) and lazy-loaded routing CI/CD (Azure DevOps), Nx monorepos, trunk-based Git workflows ...

Full-Stack Software Engineer III

Location
Oxford, England, United Kingdom
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 ...

React Native Developer

Hiring Organisation
Colossus Recruitment Ltd
Location
Sutton Coldfield, West Midlands (County), United Kingdom
Employment Type
Permanent
Salary
£45000 - £55000/annum
Services (EAS Build). Over-the-Air (OTA) updates. Experience working with maps, location services, camera integrations or push notifications. Testing frameworks such as Jest or Playwright. Monitoring tools such as Sentry. Exposure to PHP or Laravel. Experience working within Agile teams using Jira. Experience leveraging AI tools to improve ...

Senior Full-Stack Mobile Developer

Location
City of Edinburgh, Scotland, United Kingdom
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 ...

Software Developer - Content Delivery

Location
Greater London, England, United Kingdom
experience across the product lifecycle Comfortable predominantly working with Node.js, React and TypeScript (JavaScript) Familiar with JS/TS testing frameworks e.g. Mocha, Chai, Jest, Cucumber Strong problem-solving skills; ability to monitor, troubleshoot and debug technical issues An active interest and understanding of idiomatic and pattern-oriented, modern software ...

Full-stack Lead Software Engineer — Application Owner

Location
Greater London, England, United Kingdom
integration/continuous delivery pipelines, and operational support Strong proficiency in frontend development with React, including state management and testing with frameworks such as Jest or React Testing Library Advanced knowledge of backend development using Node.js and TypeScript to build RESTful APIs, along with strong experience writing and maintaining comprehensive ...

Full-Stack Software Engineer III

Location
Oxford, England, United Kingdom
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 ...

Senior Fullstack Engineer (Payments Experience)

Location
Greater London, England, United Kingdom
facing web applications. Backend Expertise: Deep hands-on experience with Python , FastAPI , PostgreSQL , Redis , and secure RESTful APIs. Frontend Proficiency: Mastery of TypeScript , React , Jest , and Storybook . (Experience with Micro-Frontends is a massive bonus). DevOps & Cloud: Comfort with AWS , Docker , Kubernetes , and Terraform for Infrastructure as Code. ...

Software Engineer

Location
Birmingham, England, United Kingdom
design, databases and the integration of services across a wider platform. Strong grounding in testing practices, including unit, integration and automated testing; experience with Jest and TDD is beneficial. Experience with cloud platforms, preferably Google Cloud Platform, together with Git, Docker and CI/CD workflows. A willingness ...

Node Developer

Location
Greater London, England, United Kingdom
About Us: Solirius Reply, part of the Reply Group, delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing ...

Senior Digital Engineer

Location
Bexhill-on-Sea, England, United Kingdom
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 ...

Software Engineer

Location
Portsmouth, England, United Kingdom
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 ...

Mid-Weight Full-Stack Software Engineer

Location
West of England, England, United Kingdom
experience with Supabase is a plus) 05 Solid understanding of RESTful APIs and web services 06 Experience writing unit, integration and e2e tests with Jest/Vitest and Playwright 07 Comfortable using Git and working within agile delivery 08 Strong problem-solving skills and attention to detail 09 Clear communication ...

Lead Software Engineer

Location
Manchester, England, United Kingdom
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 ...

Software Engineer 3

Location
Grimsby, England, United Kingdom
infrastructure experience, preferably AWS using IaC Experience with Git version control and CI/CD pipelines (CircleCI) Experience with automated testing frameworks such as Jest and Vitest. Familiarity with agile development, both Kanban and Scrum Some knowledge of SQL and NoSQL databases, Postgres, DynamoDB, Redis, etc. Strong debugging skills, ideally ...

Senior UI Software Engineer

Location
Aylesbury, England, United Kingdom
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 ...