1 to 25 of 51 Jest Jobs in the UK excluding London

similar. Strong debugging, root‐cause analysis and resolution of production issues. Familiarity with unit, integration and end‐to‐end testing tools (e.g. Jest, Playwright). Experience integrating and onboarding 3rd‐party vendors, defining patterns and abstracting APIs. Understanding of microservices and RESTful API development (structuring, documentation, versioning, testing, stubbing/ ...

services. Hands-on experience with test automation frameworks across API, UI, and service layers (e.g., RestAssured, Postman/Newman, Cypress, Playwright, Selenium, JUnit, Jest). Experience integrating automated testing into CI/CD pipelines (GitHub Actions, Jenkins, Azure DevOps, GitLab CI). Strong understanding of non-functional testing, including performance ...

frontend CI/CD practices using GitHub Actions, Azure DevOps, Jenkins, or equivalent platforms. Establish unit, integration, and end-to-end testing strategies using Jest, React Testing Library, Playwright, or Cypress. Drive Core Web Vitals improvements, bundle optimization, caching, and rendering strategies. Establish frontend code quality, security, and observability standards. ...

tested at interview. React: * Strong hands-on React with TypeScript * Micro Frontends using Module Federation * Reusable components, state and API data handling * Testing with Jest, React Testing Library or Cypress * Accessibility and performance Python: * Strong hands-on Python building production services * APIs consumed by React front ends * Serverless Python ...

frontend CI/CD practices using GitHub Actions, Azure DevOps, Jenkins, or equivalent platforms. Establish unit, integration, and end-to-end testing strategies using Jest, React Testing Library, Playwright, or Cypress. Drive Core Web Vitals improvements, bundle optimization, caching, and rendering strategies. Establish frontend code quality, security, and observability standards. ...

e.g. OpenTelemetry, Prometheus) Comprehensive testing across unit, integration and functional layers, including Go's built-in testing tooling and frontend testing frameworks such as Jest or React Testing Library Go modules and dependency management Go performance fundamentals, including profiling with pprof, memory management and garbage collection behaviour You’ll demonstrate ...

e.g. OpenTelemetry, Prometheus) Comprehensive testing across unit, integration and functional layers, including Go's built-in testing tooling and frontend testing frameworks such as Jest or React Testing Library Go modules and dependency management Go performance fundamentals, including profiling with pprof, memory management and garbage collection behaviour You’ll demonstrate ...

e.g. OpenTelemetry, Prometheus) Comprehensive testing across unit, integration and functional layers, including Go's built-in testing tooling and frontend testing frameworks such as Jest or React Testing Library Go modules and dependency management Go performance fundamentals, including profiling with pprof, memory management and garbage collection behaviour You’ll demonstrate ...

Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing and automation/Testing frameworks (e.g. Mocha, Jest, Cypress) Experience working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training ...

Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing and automation/Testing frameworks (e.g. Mocha, Jest, Cypress) Experience working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training ...

Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing and automation/Testing frameworks (e.g. Mocha, Jest, Cypress) Experience working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training ...

requests and take part in code reviews Build accessible interfaces that meet WCAG 2.2 AA. Write unit tests and Playwright tests, PHPunit, Vitest/Jest Identify the cause of bugs and implement bug fixes Support Deployment to customer and internal environments Write secure code that protects users, including against cross ...

Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing and automation/Testing frameworks (e.g. Mocha, Jest, Cypress) Experience working in an Agile delivery team We appreciate you may not be an expert in every area above - we can support with training ...

open to discussing and honing approaches for our team to improve our working practices.· Have experience of test-driven development and mocking libraries (Jest, Mockito)· Have experience with creating and updating technical documentation using collaborative tools (Jira and Confluence)· Real-world experience of Agile practices and execution (Scrum, Kanban ...

open to discussing and honing approaches for our team to improve our working practices. Have experience with test-driven development and mocking libraries (Jest, Mockito) Have experience with creating and updating technical documentation using collaborative tools (Jira and Confluence) Real-world experience of Agile practices and execution (Scrum, Kanban ...

related technologies• Exposure to a variety of JavaScript frameworks and libraries such as: React, Redux, React-Router and testing with React Testing Library Jest, Cypress, Playwright, Jasmine, Enzyme, Mocha.• Experience of using Node.js to create high traffic applications. Perhaps using Express.js, Sails, Koa or similar• Awareness and practice ...

projects demand. Languages & Frameworks: Python (3.10+), TypeScript, JavaScript (ES6+), SQL, Bash · Frontend: React.js, Next.js (App Router & Server Components), Tailwind CSS, ShadCN UI, Redux, Zustand, Jest, Cypress. Build AI product UX patterns (streaming, review loops, provenance/citations, long-running tasks, error-recovery Backend: Django (5.x+), DRF, FastAPI, Pydantic, Celery, Django ...

projects demand.* Languages & Frameworks: Python (3.10+), TypeScript, JavaScript (ES6+), SQL, Bash · Frontend: React.js, Next.js (App Router & Server Components), Tailwind CSS, ShadCN UI, Redux, Zustand, Jest, Cypress.* Build AI product UX patterns (streaming, review loops, provenance/citations, long-running tasks, error-recovery* Backend: Django (5.x+), DRF, FastAPI, Pydantic, Celery, Django ...

projects demand.* Languages & Frameworks: Python (3.10+), TypeScript, JavaScript (ES6+), SQL, Bash · Frontend: React.js, Next.js (App Router & Server Components), Tailwind CSS, ShadCN UI, Redux, Zustand, Jest, Cypress.* Build AI product UX patterns (streaming, review loops, provenance/citations, long-running tasks, error-recovery* Backend: Django (5.x+), DRF, FastAPI, Pydantic, Celery, Django ...

team. This is non-negotiable. Rigorous engineering standards - fluency with Git-based workflows, trunk-based development, CI/CD (ideally GitHub Actions), comprehensive testing (Jest, React Testing Library, Playwright), and a genuine commitment to accessibility, performance and secure-by-default coding. Technical leadership without the title - a track record ...

frontend security Clear communication and the ability to explain technical choices to technical and non-technical people Nice to have Design system experience Jest, Jasmine, Cypress, Playwright or similar NgRx or Angular signals Web performance optimisation and tools such as Sentry Docker, AWS and modern deployment pipelines Experience in agile ...

Bundlers Webpack/Vite/Rspack/Rsbuild/Rollup Module Federation Linting Version Control Git (GitLab) Testing TDD Testing frameworks/libraries (i.e. Jest) Supporting Tools: IntelliJ IDEs VS Code JIRA Confluence GitLab pipelines Lucid Charts Agentic AI assistance from Cursor An idea of the day to day? Work ...

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 ...

TypeScript Extensive experience developing applications using React Good knowledge of HTML/CSS (3+ years) Experience using JavaScript unit & e2e test frameworks (e.g. Jest, Playwright) Experience deploying code using CICD pipelines. Experience working with and mentoring junior engineers. AWS (or Azure/GCP) knowledge or experience is beneficial. Kubernetes ...

memory usage Optimising lists (FlatList, SectionList) Managing animations and gestures efficiently Analytics, crash reporting, and monitoring (Firebase, GA) Testing & Quality: Unit testing with Jest Use of linting and formatting tools (ESLint, Prettier) Build, Release & Tooling: Git-based version control workflows CI/CD for React Native apps (via ADO) Experience ...