1 to 25 of 31 Vitest Jobs in London

Well‐versed writing, maintaining and reviewing TypeScript code at production Serverless infrastructure and AWS eco system Modern React with hooks, experience writing unit tests (Vitest, RTL) for components Modern CSS styling: Tailwind, CSS Modules, style‐dictionary and design tokens Redux experience is valued but not required - we use React Query ...

TypeScript, JavaScript, HTML and CSS Experience integrating with REST APIs Solid .NET/ASP.NET Core experience Experience with automated testing tools such as Playwright, Vitest, Cypress or Jest Experience using Claude Code or similar AI-assisted development tools Git, CI/CD and Agile delivery experience Desirable Microsoft Azure Bicep ...

Styled Components Material UI (MUI) Radix UI Framer Motion Custom Design Systems APIs & Data GraphQL REST APIs Contentful CMS React Hook Form Zod Testing Vitest Jest Testing Library Playwright Storybook MSW Axe/Pa11y DevOps & Infrastructure AWS Terraform GitLab CI Vercel OpenTelemetry Sentry New Relic Please note: Should your application ...

management and modern React patterns Commercial experience building and consuming REST APIs Working knowledge of backend technologies (Node.js, Ruby) Solid understanding of frontend testing (Vitest, Jest) Understanding of clean code within both OOP and FP Experience with PostgreSQL and SQL optimization Proficiency with Git and modern CI/CD practices ...

FastAPI, Polars, LangChain Frontend: React (TanStack Query/React Router/react-hook-form + Zod), TypeScript, nx.dev, Tailwind CSS/shadcn/ui, Vitest/Playwright/MSW, Vite, Recharts Platform: Azure, Azure DevOps (CI/CD), Kubernetes, Docker, cloud storage, messaging and events, Git, SonarQube ...

ownership and work effectively in a fast-moving environment Nice to have Data visualisation or dashboard experience Tailwind CSS or component libraries Playwright, Cypress, Vitest or Jest Cloud platforms and CI/CD Python/backend experience AI/ML or data-driven products Experience in a start ...

quickly get up to speed on) our stack: React Native/Expo, Railway, GitHub (incl. CI and end-to-end testing), Playwright, Vite/Vitest, Google Cloud, AWS, Twilio, and Stripe Eligible to work in the United Kingdom Nice to Have: TanStack Start/Router experience A passion for music ...

with modern React patterns (hooks, context, state management) Experience with frontend testing strategies and tools (unit, integration and end-to-end), e.g., Jest/Vitest, React Testing Library, Playwright/Cypress Accessibility-first delivery (WCAG), including semantic HTML and assistive technology testing Web performance optimisation and profiling, including Core ...

take ownership and work effectively in a fast-moving environment Будет плюсом: data visualisation or dashboard experience Tailwind CSS or component libraries Playwright Cypress Vitest or Jest cloud platforms and CI/CD Python/backend experience AI/ML or data-driven products experience in a start ...

reliability of our entire system Our stack Infrastructure: AWS, Terraform Frontend: Vercel, NextJS, React/Redux, Testcafe (or similar, Cypress, Playwright) Backend: TypeScript, Vitest, TypeORM, Python, FastAPI, SQLAlchemy, pytest, Docker Compose Experience and Skills Experience as a full stack engineer An end-to-end systems-mindset; we are building ...

state, i18next for multi-language support (FR/EN/ES), Sentry for monitoring, Mixpanel for analytics, GrowthBook for feature flagging. Testing with Vitest/Playwright, linting/formatting with Biome. Mobile : a native iOS app (Swift) dedicated to multi-screen casting in our rooms, with GitHub Actions CI/ ...

builder : Cursor, v0 , Claude Code (and friends) are daily drivers for rapid prototyping and refactors. React + TypeScript mastery: component design, hooks, performance, testing (Vitest/Jest, Playwright). FastAPI expertise: async patterns, Pydantic schemas, pagination, auth (OAuth2/OIDC), rate‐limits, background jobs. Elasticsearch fluency: mappings/analyzers (ngrams ...

CloudFormation or Terraform where customer environments require them Build and maintain CI/CD pipelines (GitHub Actions) and automated test suites: Jest/Vitest unit tests, Playwright E2E and API tests, and integration tests against live Connect instances Follow phased rollout patterns for production contact centers where downtime is measured ...

servicesStrengthen the security and reliability of our entire systemOur stackInfrastructure: AWS, TerraformFrontend: Vercel, NextJS, React/Redux, Testcafe (or similar, Cypress, Playwright)Backend: TypeScript, Vitest, TypeORM, Python, FastAPI, SQLAlchemy, pytest, Docker ComposeQualificationsExperience as a full stack engineerAn end-to-end systems-mindset; we are building a product that should grow ...

HTML5 and CSS3, including responsive design, accessibility and cross-browser compatibility Experience with modern front-end tooling: build systems (Vite, rollup), testing frameworks (Vitest, Playwright) and CI/CD pipelines Familiarity with AI concepts and tooling — including AI-assisted development, LLM integration in web applications; practical experience is a strong ...

HTML5 and CSS3, including responsive design, accessibility and cross-browser compatibility Experience with modern front-end tooling: build systems (Vite, rollup), testing frameworks (Vitest, Playwright) and CI/CD pipelines Familiarity with AI concepts and tooling — including AI-assisted development, LLM integration in web applications; practical experience is a strong ...

knowledge of state management (RxJS, or React Query + custom streams) and data flow patterns for streaming + request/response. Testing: Jest/Vitest, React Testing Library, Playwright; strong mock/contract testing. Security: XSS mitigation, CSP, auth flows (OAuth), secure storage, anti phishing UX. CI/ ...

Livewire Knowledge of Next.js or Nuxt.js Experience with WebSockets and real-time applications Understanding of web accessibility (WCAG) standards Experience with testing frameworks (Jest, Vitest, Cypress) Familiarity with UI/UX design principles Experience building interactive interfaces and modern UIs Competitive salary based on experience Latest development equipment and tools ...

scale Strong command of HTML5, ES6+, and Vite Solid grasp of RESTful APIs, async programming, and Git workflows Experience with React Testing Library and Vitest Strong communicator who can align cross-functional teams and articulate complex technical concepts If you're excited about this role but don't meet every ...

React Three Fiber, WebGL, Deck.gl) Real-time data flows: Comfortable working with real-time data and async patterns (WebSockets, workers) Writing testable, reusable code: Vitest/Jest/Playwright, Storybook, design systems Data visualisation: Presenting complex data intuitively; geospatial experience is a plus UX/UI (desirable): A strong sense ...

TypeScript-first organisation. Our frontend stack is TypeScript and React, styled with SCSS, server‐side rendered with Next.js and Express, and tested with Vitest & Chromatic. As a Staff engineer you'll bring deep expertise with the latest native web technologies and modern frameworks, drive consistency across ...

data visualizations. Collaborating across teams to influence API design and ensure seamless frontend–backend integration. Our Tech Stack: Languages & Frameworks: React (TypeScript) Testing Tools: Vitest (unit testing), Cypress (E2E testing) Build Tools: Vite (for local development and production bundling) Custom Solutions: Internal design system, advanced caching mechanisms, and proprietary state ...

data visualizations.- Collaborating across teams to influence API design and ensure seamless frontend-backend integration. Our Tech Stack:- Languages & Frameworks: React (TypeScript)- Testing Tools: Vitest (unit testing), Cypress (E2E testing)- Build Tools: Vite (for local development and production bundling)- Custom Solutions: Internal design system, advanced caching mechanisms, and proprietary state ...

asynchronous patterns, including WebSockets and web workers Track record of writing testable, reusable code Experience maintaining design systems and using testing frameworks such as Vitest, Jest, or Playwright Strong, demonstrated sense of user experience, accessibility, and visual design Условия Salary up to £130k #J-18808-Ljbffr ...

React Three Fiber, WebGL, Deck.gl ) Real-time data flows: Comfortable working with real-time data and async patterns (Websockets, workers) Writing testable, reusable code: Vitest/Jest/Playwright, Storybook, design systems Data visualisation: Presenting complex data intuitively; geospatial experience is a plus. UX/UI (desirable): A strong sense ...