101 to 125 of 126 Permanent Jest Jobs

Senior Quality Engineer

Location
Greater London, England, United Kingdom
stage - Technical Interview 4th stage - Executive Leadership Interview Additional information Doxy.me tech stack Frontend: React, TypeScript, Playwright, WebRTC, Next.js, Nx.dev Backend: Nodejs, TypeScript, Jest, NestJS, Nx.dev Cloud: AWS 3rd party: Vonage, Pubnub, Segment, Twilio, Stripe Our product: Doxy.me: The simple, free, and secure telemedicine solution currently used by over ...

Senior Consultant, Product Engineer

Location
Greater London, England, United Kingdom
/CD. Experience with some of the following would be valuable: React Query, Zustand, Redux, Tailwind, Fluent UI, Material UI, Vite, Next.js, Storybook, Playwright, Jest, Azure Static Web Apps, Azure App Service or Microsoft Graph. You do not need to be a deep AI engineer, but you should be interested ...

Senior Consultant, Product Engineer

Location
City Of London, England, United Kingdom
/CD. Experience with some of the following would be valuable: React Query, Zustand, Redux, Tailwind, Fluent UI, Material UI, Vite, Next.js, Storybook, Playwright, Jest, Azure Static Web Apps, Azure App Service or Microsoft Graph. You do not need to be a deep AI engineer, but you should be interested ...

Software Engineering Manager - Web Platform

Location
Greater London, England, United Kingdom
Able to influence people at senior levels and from the highly technical to non-technical Our Tech Stack Next.js/React CSS Modules Playwright & Jest GraphQL GitHub + GitHub Actions NX Azure What’s In It For You Working at M&S means being part of something bigger - helping ...

Senior React Native Lead - Hybrid, Mentorship & Impact

Location
Manchester, England, United Kingdom
Engineering to deliver scalable, secure, and intuitive features for millions of pet owners. Strong skills in TypeScript, Redux, React Navigation and testing with Jest are highly valued. #J-18808-Ljbffr ...

React Frontend Architect: Real-Time, Low-Latency UI

Location
Slough, England, United Kingdom
scalable user experiences. The role requires hands-on expertise in modern frontend stacks, real-time communication, and robust testing using React Testing Library and Jest; familiarity with micro-frontends, #J-18808-Ljbffr ...

Senior Frontend Design Engineer – Outside IR35 – London

Location
Greater London, England, United Kingdom
strong eye for detail and product quality Experience creating reusable component libraries and scalable frontend architecture Strong understanding of modern testing practices (Playwright, Vitest, Jest, React Testing Library etc.) Comfortable collaborating closely with engineers, product teams and non-technical stakeholders Ability to work autonomously and deliver at pace Contract Details ...

Staff Quality Engineer - Mobile

Location
Greater London, England, United Kingdom
Define and evolve a pragmatic test pyramid for React Native - deciding where E2E is worth the weight and where logic belongs in faster layers (Jest, React Testing Library, component tests). Make deliberate calls about coverage, reliability, and speed trade-offs across the app. Set the bar for what "ready ...

Frontend Engineer

Location
Greater London, England, United Kingdom
e.g. Selenium, Cypress, Playwright) Integrating RESTful APIs in frontend Applications Building and maintaining CICD pipelines Applied familiarity with industry tools, NodeJS, Git/GitHub, Jest/React testing Library. Key Requirements Essential Skills: JavaScript/TypeScript, React JS, Node JS Jest Unit Testing & automated Functional Testing (e.g. Playwright, Cypress) Experience ...

Junior NextGen Developer

Hiring Organisation
DCS Corp
Location
California, Maryland, United States
Employment Type
Permanent
Salary
USD 100,000 Annual
Service Design and Development using either Java or C#/ASP.NET Core and/or Web Application Design and Development using the following: React, Jest, TypeScript/JavaScript, Node, NPM, HTML5, CSS. Experience with Microservice architectures. Ability to work with a geographically-distributed team. Excellent verbal and written communication skills. … familiarity with any of the following: Jira, Bitbucket, Confluence, Jenkins, Rancher, SonarQube Experience with Web Application Design and Development using the following: React, Jest, TypeScript/JavaScript, Node, NPM, HTML5, CSS. Experience with Postgres/SQL Database. Experience with Docker Experience with Agile Scrum or Scaled Agile Framework (SAFe ...

Frontend Developer (Node.js/TypeScript)

Hiring Organisation
scrumconnect ltd
Location
Leeds, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 Annual
them. Build and consume API microservices. Work with SQL or NoSQL databases, and use Redis for caching and session handling. Write automated tests with Jest or Mocha, and practise test-driven development. Follow the GOV.UK Design System and GDS standards and patterns, and meet the GDS Service Standard. Make sure … Looking For Essential: BPSS check required. Strong, hands-on experience of JavaScript, TypeScript and Node.js. Experience with Express or Fastify. Experience writing tests with Jest or Mocha. Experience with SQL or NoSQL databases. Experience with Redis and with building or using API microservices. Experience working with AWS and Azure ...

Senior Node.js Engineer

Hiring Organisation
IO Associates
Location
South East London, London, United Kingdom
Employment Type
Permanent
Salary
£85,000
Senior Backend Developer | Node.js, TypeScript & AWS Location: UK/Remote Package: £75,000 base salary + 10% cash benefit, 10% pension, bonuses. The Opportunity We're working with an established, product-led technology business looking ...

Senior Node.js Engineer

Hiring Organisation
IO Associates
Location
Southwark, London, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 - 85,000 Annual
Senior Backend Developer | Node.js, TypeScript & AWS Location: UK/Remote Package: £75,000 base salary + 10% cash benefit, 10% pension, bonuses. The Opportunity We're working with an established, product-led technology business looking ...

Senior Full-Stack Developer (.NET + React)

Location
United Kingdom
stack: App Service, Storage Queues, Event Grid, SignalR;Cover your work with tests on both sides: xUnit and Moq on the backend, Vitest or Jest and Playwright on the frontend;Take part in code review, architectural decisions, and CI/CD improvements.Requirements5+ years of commercial development experience;Strong C# … experience with Azure (App Service, Storage Queues, Event Grid, SignalR);Git, Docker, and CI/CD (GitLab);Testing: xUnit and Moq, Vitest or Jest, Playwright;Good spoken and written English.Nice to haveNode.js and NestJS;MongoDB, Redis;Nx monorepo, Redux Toolkit;Terraform;Datadog or similar observability tooling. #J-18808-Ljbffr ...

Frontend Developer (Node.js / TypeScript)

Location
Newcastle upon Tyne, England, United Kingdom
Build and consume API micro services. Work with SQL or NoSQL databases, and use Redis for caching and session handling. Write automated tests with Jest or Mocha, and practise test-driven development. Follow the GOV.UK Design System and GDS standards and patterns, and meet the GDS Service Standard. Make sure … iteratively. Investigate and fix defects, and support services in live. What We are Looking For Experience with Express or Fastify. Experience writing tests with Jest or Mocha. Experience with SQL or NoSQL databases. Experience with Redis and with building or using API microservices. Experience working with AWS and Azure ...

Frontend Developer (Node.js / TypeScript)

Location
Bridgend, Wales, United Kingdom
Build and consume API micro services. Work with SQL or NoSQL databases, and use Redis for caching and session handling. Write automated tests with Jest or Mocha, and practise test-driven development. Follow the GOV.UK Design System and GDS standards and patterns, and meet the GDS Service Standard. Make sure … iteratively. Investigate and fix defects, and support services in live. What We are Looking For Experience with Express or Fastify. Experience writing tests with Jest or Mocha. Experience with SQL or NoSQL databases. Experience with Redis and with building or using API microservices. Experience working with AWS and Azure ...

Senior AWS Engineer

Hiring Organisation
CYNET SYSTEMS
Location
Malvern, Pennsylvania, United States
Employment Type
Permanent
Salary
USD Hourly
DynamoDB conditional writes) so S3 events delivered more than once never cause duplicate processing. Own unit, integration, and smoke test suites (pytest/unittest, Jest/Mocha, moto, and aws-sdk-client-mock for AWS mocking) and maintain/improve code coverage. Support CI/CD pipelines (Jenkins … DynamoDB key design, GSIs, conditional writes, pagination. S3 - event-driven architectures (EventBridge notifications), data lake patterns (Parquet). Strong testing discipline: pytest/unittest, Jest/Mocha, mocking AWS services (moto, aws-sdk-client-mock), stubbing Spark/Glue runtime dependencies for offline unit tests. Experience with financial/transactional ...

Senior Software Engineer ()

Hiring Organisation
Placement Services USA, Inc
Location
San Francisco, California, United States
Employment Type
Any
Salary
USD 225,000 Annual
features using React and TypeScript, collaborating with design to implement usable and accessible interfaces. Write high-quality, well-tested, and maintainable code using RSpec, Jest, and CI/CD pipelines. Define and iterate on user workflows, feature requirements, and success metrics based on direct user feedback. Monitor, debug, and optimize … plus 5 years as software engineer. Experience must include demonstrated working knowledge of: Ruby on Rails, Sidekiq; PostgreSQL, Redis, Elasticsearch; React + Typescript; RSpec, Jest, Storybook, Chromatic; CircleCI, Jenkins, Datadog, Ansible, Terraform, Kubernetes; AWS ecosystem (ECS, S3, RDS, Redshift, Aurora, DynamoDB, and many others); LLM APIs and AI infrastructure ...

Java Fullstack Developer

Location
Willerby, England, United Kingdom
Founded in 1999, the company has a premium listing on the Main Market of the London Stock Exchange and is focused on regulated and regulating markets across its B2B business. By leveraging its proprietary technology ...

Java Fullstack Developer

Location
Guildford, England, United Kingdom
Founded in 1999, the company has a premium listing on the Main Market of the London Stock Exchange and is focused on regulated and regulating markets across its B2B business. By leveraging its proprietary technology ...

Quality Cell Lead

Location
Manchester, Lancashire, United Kingdom
delivery policies across all delivery cells. E2E and Performance Testing: Oversee API, component, load, and performance test coverage using automated tooling (e.g., Playwright, Cypress, Jest, JMeter) integrated into CI/CD pipelines. Quality Metrics and KPIs: Track defect leakage, mean time to detect/resolve defects, automation execution rates … optimize testing pipelines. Automation and Engineering Tech Stack: Advanced proficiency in JavaScript/TypeScript (Node/NPM), API/microservices testing, automated frameworks (Jest, Cypress, Playwright), and CI/CD tools. Frameworks and Observability: Strong test data management skills and experience with performance tools (JMeter) and monitoring platforms (Grafana, Kibana ...

Frontend Engineer (Ko/Terminal)

Location
Greater London, England, United Kingdom
team can build on. Build and improve high-performance, low-latency interfaces that hold up under real, live market data. Write well-tested code (Jest, Cypress, or Playwright) and contribute to how the team reviews and documents its work. Split your time between shipping new features and keeping things healthy … professional frontend development experience, with excellent TypeScript, React, and Next.js. Experience with MUI or a similar component library. Solid testing practice with frameworks like Jest and Cypress or Playwright. Proficient with Git, Docker, and CI/CD workflows, and familiar with monorepo structures and tools (Turborepo, Yarn Workspaces, or similar ...

Mobile App Developer 3

Location
Grimsby, England, United Kingdom
Putting the ‘i’ into British Innovation. Putting the ‘i’ into Inventing the Future. Putting the ‘i’ into Inspiring Change. myenergi is a growing global clean‐tech manufacturer dedicated to removing the barriers to a greener ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
about accessibility, web performance and building experiences customers actually enjoy using. Our stack today is React and Next.js with TypeScript, tested with Jest and Playwright, and deployed on Vercel and Google Cloud. We hold our tools with strong opinions, loosely held. We pick what is right … performance. React, Next.js & TypeScript: Proven, hands-on experience with React, Next.js (App Router and Server Components) and TypeScript, and modern testing approaches such as Jest and Playwright. Design systems: Experience working with a design system and component library, and keeping visual regression coverage useful. Server-side engineering: Strong foundations ...

Senior webontwikkelaar

Location
United Kingdom
Salaris : £65.000 (afhankelijk van ervaring) Locatie : Hybride – 1 dag per week op kantoor in Eastleigh, 4 dagen op afstand. Sponsoring is op dit moment niet beschikbaar voor deze functie. Sluit je aan bij een gevestigde ...