1 to 25 of 28 Permanent Vitest Jobs in the UK

with the ability to collaborate effectively with cross-functional teams and clients. Desirable Experience Experience with headless CMS platforms such as Contentful. Experience of modern tooling such as Vite, Vitest Familiarity with microservices architecture and API development (REST, GraphQL). Experience with mobile app development using React Native. Knowledge of UI component libraries like Material UI, and tools such as More ❯

state management Strong history of working with React and libraries like Material-UI (MUI), React Query/TanStack Query, and React Hook Form (preferred) Experience with testing frameworks like Vitest and Playwright Proficiency with GitHub for source-control Ability to write clean, maintainable, and well-tested code. Experience integrating RESTful APIs Strong problem-solving skills and attention to detail Excellent More ❯

Frontend Engineer with proficiency in React, React Native, Next.js Strong understanding of JavaScript, TypeScript, HTML, and CSS Familiarity with RESTful APIs and GraphQL Experience with testing tools such as Vitest, React Testing Library, and Playwright Knowledge of Continuous Integration and Delivery techniques Experience with Cloud Platforms, ideally AWS Advocate of automation at all levels, including unit and performance testing Code More ❯

and Azure Solid understanding of frontend frameworks (React preferred), state management , and component-based architecture Experience with SQL , Git , Postman , JSON/XML , and automated testing frameworks (e.g., Jest, Vitest) Familiarity with CI/CD tools , source control , and agile development methodologies Bonus: Experience with Umbraco , SharePoint , or AI/ML integration Strong problem-solving skills, attention to detail, and More ❯

expertise in development tools such as Webpack and Vite for efficient build and bundling workflows. Skilled in implementing robust testing strategies using frameworks like Playwright, React Testing Library, and Vitest to ensure high-quality, maintainable code. Desirable skills: Experience in Investment Banking or finance Experience with GraphQL Strong understanding of modern JavaScript tooling Experience publishing npm libraries Experience with micro More ❯

a production environment. Strong front-end skills withTypeScript(JavaScript knowledge also valued) Familiarity withREST APIs Solid understanding version controlsuch as Git. Experience with testing React applications using JEST or vitest Experience mentoring developers and help foster a culture of learning and growth Team-oriented mindset with strong communication skills Would be great, but not essential if you also had: Experience More ❯

Familiarity with RESTful APIs. Hands-on experience with bundlers such as RSPack or Vite. Knowledge of state management tools like zustand or valtio. Experience with testing frameworks such as Vitest, Jest, or React Testing Library. Proficiency with version control systems like Git. Understanding of CI/CD pipelines and deployment practices. Awareness of web accessibility standards and performance optimisation techniques. More ❯

TypeScript, Node.js, and modern frameworks like Next.js. You use a utility-first framework like Tailwind CSS to create clean, maintainable styles. You've used tools like React Testing Library, Vitest, and Playwright to write reliable, maintainable tests for front-end applications. You're well-versed in software architecture and API design, and capable of delivering secure, scalable, and high-performance More ❯

environment. Strong front-end skills with?TypeScript?(JavaScript knowledge also valued) Familiarity with?REST APIs Solid understanding version controlsuch as Git. Experience with testing React applications using JEST or vitest Team-oriented mindset with strong communication skills Self-motivated and proactive in your approach to learning and delivery Would be great, but not essential if you also had: Experience working More ❯

Native Proficiency in TypeScript (JavaScript also valued) Experience consuming REST APIs in mobile apps Solid understanding version controlsuch as Git Solid experience with testing React applications using JEST and vitest Strong collaboration and communication skills A proactive, self-directed approach to engineering challenges Would be great, but not essential if you also had: Experience in native mobile development for either More ❯

a production environment. Strong front-end skills withTypeScript(JavaScript knowledge also valued) Familiarity withREST APIs Solid understanding version controlsuch as Git. Experience with testing React applications using JEST or vitest Team-oriented mindset with strong communication skills Self-motivated and proactive in your approach to learning and delivery Would be great, but not essential if you also had: Experience working More ❯

our types! We also use d3, Formik, and Zustand to build out the products, and styled-components and tailwind to make them pretty. And then we test them with vitest, jest, and playwright. If you're also interested in the backends, here's some other tech we use: PHP, NodeJS, Docker, Elastic, Redis, and all the services offered by AWS. More ❯

software issues, including network-level troubleshooting. Collaborate closely with cross-functional teams including firmware, support, and production. Champion strong testing practices across the stack using tools like Jest and Vitest . What We're Looking For Expert-level experience in backend development with TypeScript . Solid understanding of AWS cloud infrastructure and infrastructure-as-code (IaC), ideally using Terraform . More ❯

and back-end components Proficient in use of HTML5, CSS/SCSS, and modern JavaScript/TypeScript standards Experience writing and maintaining unit tests for both Vue (e.g., using Vitest, Jest) and C# (.NET using xUnit, NUnit or MSTest) Possess a positive approach to problem solving, with a process driven method to approach design solutions and a keen eye for More ❯

passion and drive, particularly ensuring your team is happy and motivated Skills Typescript React Git Jest NPM Documentation Following and evolving patterns Beneficial: AWS S3, Cloudfront, Lambda AWS CLI vitest rollup vite Key Responsibilities: What You'll Do: Taking responsibility for the architecture and technical delivery of the products and solutions in your team Managing a (currently home-based) agile More ❯

passion and drive, particularly ensuring your team is happy and motivated Skills Typescript React Git Jest NPM Documentation Following and evolving patterns Beneficial: AWS S3, Cloudfront, Lambda AWS CLI vitest rollup vite Key Responsibilities: What You'll Do: Taking responsibility for the architecture and technical delivery of the products and solutions in your team Managing a (currently home-based) agile More ❯

Motion. Performance Optimization: Monitor and optimize application performance using Sentry and PostHog, ensuring smooth user experiences across different devices and network conditions. Testing and Quality: Write comprehensive tests using Vitest and React Testing Library, maintaining high code quality standards. API Integration: Work closely with our Laravel backend team to integrate REST APIs effectively, ensuring seamless data flow between frontend and More ❯

best practices and creating great user experiences Strong knowledge of modern build tools, frameworks, and deployment processes Extensive experience with testing frameworks for both frontend and backend (Jest/Vitest, React Testing Library, Cypress, xUnit, or similar) Significant familiarity with CI/CD pipelines and cloud-based deployment (experience with Azure would be advantageous) Experience with containerisation and orchestration technologies More ❯

web applications. Experience applying SRE principles to frontend and web-based systems: SLIs/SLOs, performance budgets, error tracking, and synthetic testing. Experience with testing frameworks such as Jest, Vitest, Playwright, and supporting reliable deployments. Proficient with version control using GIT and delivery via Agile methodologies. Working knowledge of cloud platform services (Azure/GCP) and relevant networking and security More ❯

across our app ecosystem. Guide and mentor junior developers, providing technical direction and support. Support and advocate for test automation across the mobile stack using tools like Jest and Vitest . What We're Looking For Expert-level experience building cross-platform mobile apps with React Native and TypeScript . Solid understanding of Git , version control, and CI/CD More ❯

strong understanding of React Experienced with NextJS, preferably app router You consider unit testing a key part of software delivery You have used testing libraries such as Jest or Vitest and React Testing Library A drive to collaborate with the team and share your opinions to push our technology forwards Skills that are a nice to have TailwindCSS Experience building More ❯

or GCP), networking, and security best practices for web platforms Knowledge of SRE frameworks including SLOs, SLIs, error budgets, and incident response Familiarity with testing tools such as Playwright, Vitest, and Jest Understanding of infrastructure-as-code (Terraform) and DevSecOps is a plus Why You Should Apply: You'll join an organisation with a people-first culture and a passion More ❯

Proficiency in containerisation, orchestration, and infrastructure-as-code using Docker, Kubernetes, and Terraform Experience with cloud platforms, preferably GCP or Azure Working knowledge of modern testing tools including Jest, Vitest, and Playwright Strong leadership, mentoring, and technical decision-making capabilities Why You Should Apply: You'll join a forward-thinking company that champions diversity, progression, and innovation. With recognition as More ❯

with Vue 3 Supporting and maintaining open source software Implementing BDD (Behavior-Driven Development) practices Nice-to-haves Experience with Laravel, or Symfony Experience using Docker Familiarity with Vite, ViTest, ESLint Familiarity with PHPUnit and PHP Codesniffer and PHPStan Understanding of web security best practices Company benefits Long-term career development and progression Remote and flexible working hours Access to More ❯

_ga - Expires after 2 years (first-party cookie) _ga_nnnnnnnnnn - Expires after 2 years (first-party cookie) Hours: 35 hours per week, Hybrid working - 2 days a week in the office Closing Date: Thu, 31 Jul 2025 We're looking More ❯