1 to 25 of 40 Jest Jobs in the UK

strategies and database tuning, reducing API response times by over 30% . Developed automated unit, integration and end-to-end tests using JUnit, Mockito, Jest, Cypress and Playwright , increasing deployment confidence and reducing production defects. Worked with PostgreSQL and MongoDB , designing efficient data models and optimising complex queries. Applied secure ...

practical experience developing interfaces that comply with WCAG 2.2 standards. Quality Assurance: Experience writing unit and integration tests using modern automated testing frameworks (eg, Jest, Cypress, or Playwright). Agile Collaboration: Experience working effectively within multidisciplinary agile teams (such as Scrum or Kanban) and using collaboration tooling like Jira ...

Quality & Automation: Hands-on experience integrating Front End code into CI/CD pipelines (eg, Jenkins, GitHub Actions) and writing comprehensive automated tests (eg, Jest, Cypress, Playwright). Agile Mindset: A strong track record of operating effectively in blended, multidisciplinary agile environments, adapting smoothly to legislative or policy-driven changes. ...

Modern JavaScript (ES6+), HTML5 and CSS3. State management libraries such as Redux or Context API. REST APIs and asynchronous programming. Testing frameworks such as Jest and React Testing Library. Git and collaborative development workflows. Agile/Scrum delivery environments. CI/CD pipelines and modern software engineering practices. Desirable experience ...

Nice to Have Event-driven architecture experience (Kafka, async patterns) Observability tools (Prometheus, Grafana, ELK) Frontend security (OAuth2, JWT) Automated testing frameworks (Cypress, Playwright, Jest) Design systems and tooling (Storybook, Figma) Experience in financial services, fintech, or payments environments Reasonable Adjustments: Respect and equality are core values to us. ...

e.g. TeamCity) Strong experience using Git for version control Experience working with RESTful APIs (design and integration) Familiarity with testing frameworks (e.g. xUnit, NUnit, Jest, Jasmine) Experience with logging and monitoring tools (e.g. Elasticsearch, Sentry, Rollbar) Awareness of cloud technologies (AWS, Terraform, Cloudflare – desirable) About You Passionate about technology ...

Cloud/Spring Data JPA/Spring Boot Microservices. Should have troubleshooting skills using debuggers, logs, etc. Strong understanding of test‐driven development using Jest, Cypress, JavaScript, JUnit, Mockito. Experience with public clouds like AWS, GCP will be added advantage. Experience with OpenShift, Docker and Kubernetes. Understanding of build ...

Automation : Implementing and maintaining continuous integration/continuous deployment pipelines to accelerate development cycles. Code Quality and Testing : Experience with automated testing frameworks (e.g., Jest, JUnit) and best practices for ensuring code quality. DevOps Practices : Expertise in DevOps, particularly around automating deployment, monitoring, and scaling applications. Communication : Able to confidently ...

/API work. Tech & Skills JavaScript/TypeScript, React/Angular/Vue Node.js, REST/GraphQL APIs HTML, CSS, responsive & accessible design Testing (Jest/Cypress), CI/CD, Git Experience integrating APIs (AI exposure a bonus) Responsibilities Build high-quality frontend applications Develop reusable UI components Collaborate across ...

/API work. Tech & Skills JavaScript/TypeScript, React/Angular/Vue Node.js, REST/GraphQL APIs HTML, CSS, responsive & accessible design Testing (Jest/Cypress), CI/CD, Git Experience integrating APIs (AI exposure a bonus) Responsibilities Build high-quality frontend applications Develop reusable UI components Collaborate across ...

work with a variety of technologies. You'll ideally have experience with some of the following, or be open to learning: JavaScript: React, Node.js, Jest, Cypress Ruby (non-Rails environment) - nice to have AWS: EC2, ECS, Lambda, S3, SQS Databases: MongoDB & PostgreSQL They are looking for someone who is: Proactive ...

work with a variety of technologies. You’ll ideally have experience with some of the following, or be open to learning: JavaScript: React, Node, Jest, Cypress Ruby (non-Rails environment) – nice to have AWS: EC2, ECS, Lambda, S3, SQS Databases: MongoDB & PostgreSQL They are looking for someone who is: Proactive ...

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 ...

Node.js development experience (including frameworks like Express) and NPM package management. Testing: Deep understanding of Test Driven Development (TDD) and common testing frameworks (e.g., Jest, Mocha, Chai). Data: Practical experience with Relational or NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB, DynamoDB). Version Control: Git and experience with distributed version ...

Node.js development experience (including frameworks like Express) and NPM package management. Testing: Deep understanding of Test Driven Development (TDD) and common testing frameworks (e.g., Jest, Mocha, Chai). Data: Practical experience with Relational or NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB, DynamoDB). Version Control: Git and experience with distributed version ...

accessibility (WCAG), and responsive design principles. Solid experience across the testing landscape, including unit, integration, and end-to-end testing using tools such as Jest, Detox, Cypress, Playwright, Selenium, JUnit, and Mockito with a strong commitment to test-driven development. Solid understanding of CI/CD pipelines, version control ...

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 ...

HTML5, CSS3 and SCSS Responsive and mobile-first development experience REST API and/or GraphQL integration experience Testing experience using tools such as Jest, React Testing Library, Cypress or Playwright Experience working with Git-based version control and CI/CD pipelines Strong knowledge of frontend performance optimisation ...

similar server-side JavaScript/TypeScript environments REST APIs, ideally with Express, Nest.js or similar MongoDB and/or relational databases Unit testing with Jest or similar Working in a CI environment Clear communication and the ability to work well in a collaborative development team Useful experience AI-assisted development ...

working with CI/CD pipelines using tools like GitHub Actions, CircleCI, or AWS CodePipeline. Familiarity with modern testing practices and tools (e.g., Jest, Vitest), including writing unit and integration tests. Basic understanding of secure development practices and familiarity with threat modelling and risk assessment techniques. Good time management ...

Experience in building accessible compliant user interfaces (WCAG). Proven ability in delivering thorough unit level test coverage using common testing frameworks such as Jest or Mocha. Experience integrating with a wide range of technical systems including database technologies (SQL or NoSQL), caching tools such as Redis and API Microservices ...

maintain E-commerce ticketing platform, including API connectivity with third-party suppliers Must have skills and competencies: Proficiency in Front end: React, JavaScript (Webpack, Jest), Next.js, HTML, CSS, Vite Proficiency in Back end: Node.js, SQL, PostgreSQL, Supabase, Python Proficiency in Development: Git, GitHub, Agile, Vercel; experience integrating third-party APIs ...

OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing/automation and use of testing frameworks (e.g. Mocha, Jest, Cypress) We appreciate you may not be an expert in every area above - we can support with training and development in some areas! Please ...

Code (Terraform, Ansible) Data & Search Technologies Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Testing & Quality Unit testing and automation Testing frameworks (e.g. Mocha, Jest, Cypress) Delivery & Collaboration Experience working in an Agile delivery team Use of code repositories (e.g. GitLab); familiarity with branching strategies, pull requests and merge processes ...

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 … developing applications with Node.js Excellent JavaScript and TypeScript knowledge Experience building REST APIs using Express.js Commercial Angular development experience Experience writing automated tests using Jest Experience using GitLab CI/CD Understanding of Agile software delivery Experience working with Git Desirable Skills Experience with some of the following technologies would ...