1 to 25 of 152 Jest Jobs

code quality, performance, and security across the stack. Participate in agile ceremonies, code reviews, and continuous improvement initiatives. Essential Skills: Frontend: React.js, TypeScript, Redux, HTML5, CSS3, SASS Webpack, Babel, Jest, Cypress Backend: Java 8+, Spring Boot, Node.js (optional) REST APIs, JSON, OAuth 2.0 DevOps & Cloud: Azure (preferred), AWS (optional) Docker, Kubernetes, Terraform GitHub Actions, Azure DevOps Databases: PostgreSQL, Oracle, MongoDB More ❯

React and state management libraries (redux, react query); Source code repositories and change management tools (e.g. Git); Agile development practices and test automation (Unit/Integration/E2E testing - Jest/Testing Library/Cypress, Playwright); Build processes and release automation (Azure Pipelines, Nexus); Experience of agile development practices, DevOps pipelines, continuous integration/deployment, test automation and the E2E More ❯

Jira, BitBucket, Bamboo from Atlassian). Understanding of agile development methodologies (Scrum, Kanban). Excellent problem-solving, analytical, and debugging skills. Unit testing and automation tools such as JUnit, Jest, Cypress and Playwright. Strong communication and interpersonal skills, with the ability to collaborate effectively in a team environment. Preferred Skills and Qualifications: Prior experience building Enterprise SaaS platforms and products. More ❯

framework Must have experience in MERN stack for developing User interfaces using modern web technologies and frameworks such as HTML5, CSS3, SCSS, Bootstrap, ReactJS, Redux and Node.js. Test Frameworkso Jest - the most popular testing framework for JavaScript developerso Mocha - popular testing framework for JavaScript developerso JUnit The de-facto standard for unit testing Java applications.o Spring Test & Spring Boot Test More ❯

performance tuning.Excellent problem-solving, communication, and leadership skills. Nice to Have Experience with GraphQL and API Gateway.Exposure to Kafka, RabbitMQ, or other messaging frameworks.Familiarity with automated testing frameworks (JUnit, Jest, Cypress).Knowledge of DevOps practices and Infrastructure as Code (Terraform, Ansible). More ❯

GraphQL. Design and implement Java/Spring Boot microservices within AWS Cloud environments, integrating APIs and data layers. Apply best practices in CI/CD, automated testing (JUnit, Mockito, Jest, Playwright) and cloud-native deployment using Docker, GitHub Actions, and Kubernetes. Contribute to architectural decisions and coding standards, ensuring system performance, scalability, and security through thoughtful design. Play a role More ❯

or cloud platforms like AWS/GCP/Azure). Strong problem-solving skills and ability to work both independently and in a team. Bonus: Experience with testing frameworks (Jest, Pytest, Cypress). Familiarity with state management tools (Redux, Zustand, Recoil). Exposure to microservices or event-driven architectures. Basic knowledge of DevOps practices and infrastructure as code (Terraform, Ansible More ❯

requirements into performant, secure, and maintainable user-facing functionality. Define and uphold front-end engineering best practices , including TypeScript correctness, accessibility standards, performance budgets, linting, and automated testing using Jest and Playwright. Collaborate closely with backend engineers , shaping API contracts, contributing to integration standards, and ensuring efficient data exchange with FastAPI services. Build reliable, data-intensive UIs , integrating with Postgres More ❯

collaborative team setting. Significant experience with version control systems such as Git. Strong expertise in writing and maintaining automated tests (e.g., unit, integration, or component tests using NUnit, xUnit, Jest, or Jasmine). Desirable Experience with both front end (e.g. React, TypeScript) and back end (.NET C#, ASP.NET) development, especially related to API consumption good practices such as schema validation More ❯

delivery and a unified customer experience. 4. Governance, Security & Quality Ensure accessibility (WCAG 2.1), internationalization (i18n), and performance benchmarks are consistently met. Establish frontend testing strategy using tools like Jest, React Testing Library, Cypress, etc. Partner with security teams to implement secure-by-design frontends aligned with SaaS compliance needs (e.g., OWASP, SSO, GDPR). Required Qualifications Bachelor's or More ❯

Angular, React. Hands on experience in working with TypeScript. Demonstratable experience in working with and designing REST APIs Knowledge and experience in working with NodeJS Experience with Unit testing (Jest, Vitest). Solid understanding and experience in HTML 5 and CSS 3. Hands-on experience in developing pixel perfect CSS driven, table-less HTML for all new projects, following development More ❯

Angular, React. Hands on experience in working with TypeScript. Demonstratable experience in working with and designing REST APIs Knowledge and experience in working with NodeJS Experience with Unit testing (Jest, Vitest). Solid understanding and experience in HTML 5 and CSS 3. Hands-on experience in developing pixel perfect CSS driven, table-less HTML for all new projects, following development More ❯

/Auth systems (OAuth2/OpenID Connect/JWT). Experience with messaging/eventing platforms (RabbitMQ, Kafka). Infrastructure as Code (Terraform, ARM templates). Front-end testing (Jest, React Testing Library) and TypeScript. Domain knowledge in fintech/healthcare/B2B SaaS (optional). Benefits & culture Competitive salary: £50k–£60k plus potential performance bonus. Hybrid working model — flexible More ❯

/Auth systems (OAuth2/OpenID Connect/JWT). Experience with messaging/eventing platforms (RabbitMQ, Kafka). Infrastructure as Code (Terraform, ARM templates). Front-end testing (Jest, React Testing Library) and TypeScript. Domain knowledge in fintech/healthcare/B2B SaaS (optional). Benefits & culture Competitive salary: £50k–£60k plus potential performance bonus. Hybrid working model — flexible More ❯

/Auth systems (OAuth2/OpenID Connect/JWT). Experience with messaging/eventing platforms (RabbitMQ, Kafka). Infrastructure as Code (Terraform, ARM templates). Front-end testing (Jest, React Testing Library) and TypeScript. Domain knowledge in fintech/healthcare/B2B SaaS (optional). Benefits & culture Competitive salary: £50k–£60k plus potential performance bonus. Hybrid working model — flexible More ❯

.NET/C#, and TypeScript . Create fast, accessible UIs for customer-facing eCommerce experiences. Develop robust APIs ( REST/GraphQL ) and backend services. Write clean, tested code (e.g., Jest, xUnit, NUnit ) and automate delivery with CI/CD. Optimise for speed, scalability, and reliability; integrate third-party services. Build with cloud-native components ( Azure Functions, Service Bus, event-driven More ❯

and open-source frameworks. Solid front-end skills: TypeScript, HTML5, CSS3, SCSS , responsive web development. Exposure to AWS : serverless applications, Lambdas, Step Functions, S3, DynamoDB. Writing unit tests using Jest/Jasmine and end-to-end testing with Playwright . Experience integrating RESTful APIs and microservices . Strong focus on quality coding practices , code coverage, and maintainability. Familiarity with logging More ❯

in the team's agile practices Take part in continuous improvement of the development process Essential Technical Skills Language - JavaScript, NodeJS, Typescript Framework - NestJS/Express/Microservices Testing - Jest/Mocha/Cypress/React testing Library API – OpenAPI/GraphQL/GRPC Messaging - AMQP/RabbitMQ/Kafka Data Storage - MongoDB/Mongoose Web UI - Angular/ReactJS More ❯

in the team's agile practices Take part in continuous improvement of the development process Essential Technical Skills Language - JavaScript, NodeJS, Typescript Framework - NestJS/Express/Microservices Testing - Jest/Mocha/Cypress/React testing Library API – OpenAPI/GraphQL/GRPC Messaging - AMQP/RabbitMQ/Kafka Data Storage - MongoDB/Mongoose Web UI - Angular/ReactJS More ❯

and adaptability matter. Your Technical Toolkit React/React Native/TypeScript Swift (iOS)/Kotlin (Android) JavaScript/HTML/CSS Figma/Vercel/Git Testing frameworks : Jest, Cypress, XCTest, Espresso CI/CD pipelines : GitHub Actions, CircleCI, Bitrise Cloud basics : AWS, Docker, K8s (exposure preferred) Desirable Familiarity with RDBMS/NoSQL for data modeling awareness Interview Process More ❯

Service Bus Desirable Skills Knowledge of LDDF framework , MOD digital services, or Defence data standards Infrastructure as Code – Terraform or Ansible Experience with MODCloud, AWS, or Azure Testing frameworks: Jest, Mocha, Supertest Familiarity with JSP 440 , NCSC Secure Coding Guidelines , or Defence Digital standards Security Clearance Active SC clearance is mandatory . Candidates eligible for DV clearance will be prioritised More ❯

growth and innovation. Contribute to DevOps practices including CI/CD pipelines and infrastructure automation. Required Skills TypeScript/Node.js REST APIs (Express, Nest.js, or similar frameworks) Unit testing (Jest or equivalent) Cloud computing (GCP preferred; AWS or Azure experience also valuable) Infrastructure as Code (Terraform or similar) Docker and Compose Continuous Integration tools and environments Experience in a Continuous More ❯

growth and innovation. Contribute to DevOps practices including CI/CD pipelines and infrastructure automation. Required Skills TypeScript/Node.js REST APIs (Express, Nest.js, or similar frameworks) Unit testing (Jest or equivalent) Cloud computing (GCP preferred; AWS or Azure experience also valuable) Infrastructure as Code (Terraform or similar) Docker and Compose Continuous Integration tools and environments Experience in a Continuous More ❯

Service Bus Desirable Skills Knowledge of LDDF framework , MOD digital services, or Defence data standards Infrastructure as Code - Terraform or Ansible Experience with MODCloud, AWS, or Azure Testing frameworks: Jest, Mocha, Supertest Familiarity with JSP 440 , NCSC Secure Coding Guidelines , or Defence Digital standards Security Clearance Active SC clearance is mandatory . Candidates eligible for DV clearance will be prioritised More ❯

Proven experience with state‐management libraries (e.g., Redux, Zustand). Solid experience integrating front‐end apps with RESTful APIs, (GraphQL is a bonus). Experience with testing frameworks (e.g., Jest , React Testing Library ). Comfortable with CI/CD pipelines, version control ( Git ), modern build tools and an eye for performance optimisation. Strong understanding of scalable front‐end architecture, responsive More ❯