1 to 25 of 417 Permanent Jest Jobs in the UK

Go, TypeScript, and/or JavaScript Experience with technologies such as MySQL, MongoDB, Postgres, Redis, gRPC, WebSockets, REST API, React, CSS, Rego/OPA, Jest, Cypress, Redux, microservices, AWS/Azure/GCP, Docker, Kubernetes, etcd, Tailwind, DaisyUI, shadcn/ui, Git, Ansible, Terraform, HTML5, Leaflet/Mapbox/Cesium More ❯

e.g., MySQL, PostgreSQL, MS SQL Server, MongoDB. Familiarity with Git and branching strategies such as GitOps. Solid understanding of testing frameworks and methodologies e.g. Jest, Mocha, Selenium. Ability to write and maintain unit, integration, and end-to-end tests. Ability to write and understand design documentation using C4, sequence diagrams More ❯

and event-driven architecture RESTful API design Kafka, Camunda Frontend Development React 18, Next.js, Redux JavaScript & TypeScript Experience with testing and static analysis tools (Jest, Mocha, Jasmine, ESLint, Prettier) Databases PostgreSQL, Snowflake, MySQL, MongoDB, Redis Schema versioning tools like Flyway SQL and NoSQL proficiency DevOps & Platform Systems AWS, Kubernetes CI More ❯

REST APIs and API documentation (OpenAPI) SQL & NoSQL databases Git, GitLab, CI/CD pipelines Docker & microservices Bonus Points for Experience With: Testing with Jest NestJS framework Jamstack – Gatsby or Next.js RabbitMQ, SOLR, or AWS Java or Vert.X (for those with polyglot experience!) Ways of Working: Agile and squad-based More ❯

REST APIs and API documentation (OpenAPI) SQL & NoSQL databases Git, GitLab, CI/CD pipelines Docker & microservices Bonus Points for Experience With: Testing with Jest NestJS framework Jamstack – Gatsby or Next.js RabbitMQ, SOLR, or AWS Java or Vert.X (for those with polyglot experience!) Ways of Working: Agile and squad-based More ❯

REST APIs and API documentation (OpenAPI) SQL & NoSQL databases Git, GitLab, CI/CD pipelines Docker & microservices Bonus Points for Experience With: Testing with Jest NestJS framework Jamstack – Gatsby or Next.js RabbitMQ, SOLR, or AWS Java or Vert.X (for those with polyglot experience!) Ways of Working: Agile and squad-based More ❯

ES6+, React, Redux, Node.js , and related front-end technologies. Experience with RESTful APIs, JSON, WebSockets , and asynchronous programming. Solid understanding of testing frameworks (e.g., Jest, Mocha, Cypress). Knowledge of build tools like Webpack, Babel, or Vite and experience with Git-based workflows. Comfortable working in Agile environments , with tools More ❯

front-ends - React.js, Angular or Vue HTML, CSS, JavaScript (ES6) or TypeScript Webpack or Gulp A client-side Unit Testing framework e.g., Mocha or Jest Other technical skills API Management and Documentation (Swagger.io, I/O Docs) Experience with high scale, highly transactional, high performance, highly available systems and robust More ❯

mentorship and leadership to others And any experience of these would be really useful: Azure DevOps, git, Jira, Confluence React, NodeJS, .Net Core NUnit, Jest, React Testing Library Cypress/Playwright Dynatrace (monitoring) About working for us Our focus is to ensure we're inclusive every day, building an organisation More ❯

JavaScript. Solid understanding of core web technologies (HTML5, CSS3). Experience working in cloud-hosted environments, ideally Azure. Familiarity with automated testing frameworks (e.g., Jest, Playwright). A collaborative mindset with a passion for solving real customer problems. Curiosity, initiative, and a drive to continuously learn and adapt. Bonus Points More ❯

practical experience using CI/CD tools. Specifically AWS Code Build and GitHub. Minimum 5 years experience working with testing frameworks such as Cypress, Jest and Enzyme/RTL. Practical experience working with AB testing Technologies (we use Conductrics but experience with other equivalent tools such as AB Tasty or More ❯

Frontend: React.js, TypeScript, Next.js, HTML5, CSS Modules Backend: Node.js, Express.js, REST APIs Cloud & DevOps: AWS (Lambda, S3, DynamoDB), Docker, CI/CD pipelines Testing: Jest, React Testing Library Tools: GitHub, Jira, Slack What they're looking for: 7+ years of professional experience in JavaScript development Strong experience in both React.js More ❯

Frontend: React.js, TypeScript, Next.js, HTML5, CSS Modules Backend: Node.js, Express.js, REST APIs Cloud & DevOps: AWS (Lambda, S3, DynamoDB), Docker, CI/CD pipelines Testing: Jest, React Testing Library Tools: GitHub, Jira, Slack What they're looking for: 7+ years of professional experience in JavaScript development Strong experience in both React.js More ❯

Frontend: React.js, TypeScript, Next.js, HTML5, CSS Modules Backend: Node.js, Express.js, REST APIs Cloud & DevOps: AWS (Lambda, S3, DynamoDB), Docker, CI/CD pipelines Testing: Jest, React Testing Library Tools: GitHub, Jira, Slack What they're looking for: 7+ years of professional experience in JavaScript development Strong experience in both React.js More ❯

with HTML, CSS-in-JS (or SASS), NodeJS, NPM and TypeScript. Experience of using and developing RESTful web services. Experience of web testing frameworks (Jest, Enzyme, Cypress, etc.). Experience working in a git-based CI/CD SDLC environment. Knowledge of data structures, algorithms, and designing for performance. Comfortable More ❯

and experience writing testable code. You’ll need solid experience in Angular, TypeScript and RxJS along with experience in using testing tools such as Jest and Cypress or PlayWright. Additionally, you’ll demonstrate: Sound collaboration skills with the ability to work with business teams to produce pragmatic solutions that work More ❯

and experience writing testable code. You’ll need solid experience in Angular, TypeScript and RxJS along with experience in using testing tools such as Jest and Cypress or PlayWright. Additionally, you’ll demonstrate: Sound collaboration skills with the ability to work with business teams to produce pragmatic solutions that work More ❯

TypeScript, Material UI (v5) MUI, REST APIs, and CSS. Strong knowledge of state management tools (Redux, MobX, etc.). Experience with testing frameworks like Jest and Cypress for unit, integration, and end-to-end testing. Understanding of GIT version control and CI/CD pipelines (e.g., Azure DevOps, GitHub). More ❯

TypeScript Frontend: React, Vue.js Backend: Node.js, Express AI Dev Tools: GitHub Copilot, Claude, Windsurf Enterprise Platforms: Microsoft MCP Cloud Platforms: AWS, Vercel, Azure Testing: Jest, Cypress, Playwright Version Control: Git, GitHub Agile Tools: Jira, Trello Why Join TwoSD? At TwoSD , innovation isn’t a department—it’s a mindset. Here More ❯

TypeScript Frontend: React, Vue.js Backend: Node.js, Express AI Dev Tools: GitHub Copilot, Claude, Windsurf Enterprise Platforms: Microsoft MCP Cloud Platforms: AWS, Vercel, Azure Testing: Jest, Cypress, Playwright Version Control: Git, GitHub Agile Tools: Jira, Trello Why Join TwoSD? At TwoSD , innovation isn’t a department—it’s a mindset. Here More ❯

TypeScript Frontend: React, Vue.js Backend: Node.js, Express AI Dev Tools: GitHub Copilot, Claude, Windsurf Enterprise Platforms: Microsoft MCP Cloud Platforms: AWS, Vercel, Azure Testing: Jest, Cypress, Playwright Version Control: Git, GitHub Agile Tools: Jira, Trello Why Join TwoSD? At TwoSD , innovation isn’t a department—it’s a mindset. Here More ❯

TypeScript Frontend: React, Vue.js Backend: Node.js, Express AI Dev Tools: GitHub Copilot, Claude, Windsurf Enterprise Platforms: Microsoft MCP Cloud Platforms: AWS, Vercel, Azure Testing: Jest, Cypress, Playwright Version Control: Git, GitHub Agile Tools: Jira, Trello Why Join TwoSD? At TwoSD , innovation isn’t a department—it’s a mindset. Here More ❯

Vector Databases, and Semantic Search Working containers via Docker, K8s, and/or Azure Container Instances Frontend unit testing experience is a plus ( i.e. Jest, Vitest ) Education in Computer Science or Software Engineering (or related experience) Experience developing software using Microsoft Visual Studio, Github , Jira and/or Azure DevOps More ❯

or GCP, and related technologies (e.g. Kubernetes, Docker and serverless). Experience with unit, integration, and end to end testing tools and practices (e.g. Jest, Cypress, Backstop, Playwright). Experience with CI/CD and Trunk Based Development. Experience with observability tools and practices, including monitoring, logging, and tracing to More ❯

Frontend: React.js, TypeScript, Next.js, HTML5, CSS Modules Backend: Node.js, Express.js, REST APIs Cloud & DevOps: AWS (Lambda, S3, DynamoDB), Docker, CI/CD pipelines Testing: Jest, React Testing Library Tools: GitHub, Jira, Slack What they're looking for: 7+ years of professional experience in JavaScript development Strong experience in both React.js More ❯