26 to 50 of 54 Jest Jobs in the UK excluding London

Senior Software Engineer (Vue.js/TypeScript) - iGaming

Location
Manchester, England, United Kingdom
design systems (e.g. Storybook) REST and GraphQL API integration Build tooling such as Vite or Webpack Automated testing with tools such as Vitest, Jest, Cypress or Playwright Responsive, accessible UI development (WCAG standards) CSS architecture (e.g. Tailwind, SCSS, CSS Modules) Git and modern software development workflows CI/CD pipelines ...

Senior Software Engineer (Vue.js/TypeScript) - iGaming

Location
City of Edinburgh, Scotland, United Kingdom
design systems (e.g. Storybook) REST and GraphQL API integration Build tooling such as Vite or Webpack Automated testing with tools such as Vitest, Jest, Cypress or Playwright Responsive, accessible UI development (WCAG standards) CSS architecture (e.g. Tailwind, SCSS, CSS Modules) Git and modern software development workflows CI/CD pipelines ...

Front-End Engineer

Location
St Albans, England, United Kingdom
tracking pixels. Workflow: Git, Gitflow or trunk-based development, automated CI/CD and Agile/Scrum delivery. Testing: Unit and integration testing using Jest, Vitest or React Testing Library. Desirable but not essential E-commerce: Exposure to e-commerce or Headless Commerce environments. GraphQL: Familiarity with queries, mutations ...

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 ...

Full-Stack Java Engineer: Cloud, Microservices & React

Location
Glasgow, Scotland, United Kingdom
enhance, modernize, and integrate with MuleSoft, AWS Cloud, and CI/CD pipelines in a collaborative, agile environment. The role emphasizes TDD, test automation (Jest), and strong back-end with JSF UI, plus hands-on API management and data formats like JSON and XML. #J-18808-Ljbffr ...

Lead MERN Developer

Hiring Organisation
Spencer Rose Ltd
Location
Leeds, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
technically hands-on. Strong stakeholder management and communication skills. Experience working with cloud platforms such as Azure or GCP . Unit testing experience using Jest and React Testing Library . Experience working within agile software development environments. Automated testing experience using Playwright . Exposure to CI/CD pipelines ...

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 ...

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 ...

Senior Digital Engineer

Location
Leicester, 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.**What we offer**Join us and you’ll find a different ...

Full Stack Developer

Location
Manchester, England, United Kingdom
design — Express withOpenAPIor equivalent. Nice tohave: comfort with runtime type validation at trust boundaries — Zod, Yup, or similar. Nice tohave: experience writing unit andcomponenttests — Jest andReactTesting Library,Vitest, or equivalent. Nice tohave: containerisationfundamentals using Docker or an equivalent tool, and general scripting ability in Bash or PowerShell. Highly desirable: experience ...

Full Stack Developer

Location
Belfast City District, Northern Ireland, United Kingdom
design — Express withOpenAPIor equivalent. Nice tohave: comfort with runtime type validation at trust boundaries — Zod, Yup, or similar. Nice tohave: experience writing unit andcomponenttests — Jest andReactTesting Library,Vitest, or equivalent. Nice tohave: containerisationfundamentals using Docker or an equivalent tool, and general scripting ability in Bash or PowerShell. Highly desirable: experience ...

Frontend Architect - React AI

Location
Slough, England, United Kingdom
reactive programming paradigms Architecture: Strong understanding of micro-frontends and Single Page Applications (SPA) Testing: Hands-on experience with React Testing Library/Jest for unit and integration testing UI Automation (Good to Have): Exposure to frameworks like Playwright or Cypress Desired Experience Experience working on financial services or trading ...

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 ...

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 ...

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 ...

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 ...

Full-stack Lead Software Engineer Application Owner

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
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 ...

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 ...

Software Engineer III - React

Location
Glasgow, Scotland, United Kingdom
applied experience Strong hands-on experience building enterprise web applications with React + TypeScript, including advanced component patterns. Strong experience with UI testing (e.g., Jest/React Testing Library and Cypress/Playwright) and systematic debugging/troubleshooting. Proven experience designing and delivering accessible, performant UIs (WCAG awareness, profiling, bundle ...

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 ...

Frontend Developer

Location
Leeds, England, United Kingdom
systems (Vercel, GitHub Actions). Experience building or maintaining a design system. Experience with testing libraries and tools (Vitest, React Testing Library, Playwright, Jest). Experience using Tailwind or other utility-based CSS libraries. The stack Next.js React TypeScript Tailwind Typesense ClickHouse Vercel Shadcn/ui Jotai Why work ...

Senior Applications Developer (React Native)

Location
Manchester, England, United Kingdom
Strong experience developing React Native applications. Expertise with technologies such as TypeScript, Redux, RTK Query, React Navigation and Firebase. Experience writing automated tests using Jest, React Testing Library and end-to-end testing tools. Strong understanding of mobile architecture, performance optimisation, API integrations and application lifecycle management. Knowledge of accessibility ...

Senior Frontend Engineer

Hiring Organisation
Hackajob Ltd
Location
Belfast, County Antrim, Northern Ireland, United Kingdom
Employment Type
Permanent, Work From Home
Native is beneficial. Experience with GraphQL, preferably using Apollo Client with React for efficient data fetching and state management. Experience in Unit Testing with Jest Continuous Integration experience (Docker) A passion for coding and keeping up to date with new technologies frameworks and techniques Extensive experience in an Agile environment ...

Senior Frontend Engineer

Location
Cambridge, England, United Kingdom
libraries such as Styled Components. An advocate and implementer of industry best practices in frontend engineering including automated testing, using frameworks such as Jest and React Testing Library. What will help you thrive in the Frontend Team Our product is technically demanding - built for domain experts who rely ...

Front End Engineer - Serve

Location
Belfast, Northern Ireland, United Kingdom
. Testing Practices: Proficient in writing and maintaining unit and integration tests, demonstrating an understanding of test-driven development (TDD) principles (e.g., Vitest, Playwright, Jest). Distributed Systems Knowledge: Familiarity of distributed systems, including building scalable and resilient services (e.g., Redis, Kafka, AWS infrastructure). Problem-Solving & Collaboration: Strong problem ...