Permanent Jest Jobs in London

1 to 25 of 37 Permanent Jest Jobs in London

Senior Full Stack Software Engineer (.Net / React) (Remote)

London, United Kingdom
Hybrid / WFH Options
Remotestar
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 ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Java Full stack( React Js)-5-8Years- C11 - Chennai

London, United Kingdom
citi.com
APIs, and working with asynchronous requests (Axios, Fetch). Strong knowledge on version control system, especially GIT. Experience with testing frameworks and libraries as Jest/Enzyme or React Testing Library. Ability to collaborate within Agile/SAFe teams. Creating Jenkins build and RLM processes to deploy code on higher More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Frontend Developer (React, AB Testing) - London/Nottingham

London, United Kingdom
Salt Digital Recruitment
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 ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer

London, United Kingdom
Upscope
a solid understanding of their ecosystems. Experience with modern development tools and practices, such as Git, CI/CD pipelines, automated testing frameworks (e.g., Jest, Mocha), and containerisation technologies (e.g., Docker). Knowledge of RESTful API design and development, and familiarity with web services architecture. Ability to write efficient, secure More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Full Stack Engineer (f/m/d)

London, United Kingdom
Hybrid / WFH Options
Contentful
demonstrating ownership, urgency, and the ability to drive initiatives independently. Solid Background in Automated Testing: Including both unit and e2e tests, using frameworks like Jest & Cypress. Containerization and Orchestration: Experience with Docker and Kubernetes. Cloud Services Familiarity: Knowledge of cloud platforms like AWS, Azure, or GCP. Preferred Applied AI: Previous More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

UI developer Azure/React

London, England, United Kingdom
Henderson Scott
Proficiency in HTML, JavaScript, TypeScript. React, Next.js, Redux, Context API, Node.js. MSAL and Git. Build tools: Webpack, Rollup. CSS/SCSS, SCSS Modules. Testing: Jest, React Testing Library, Enzyme. Experience with micro-front end architecture. Familiarity with Figma, Adobe Suite. Knowledge of OOP, caching, security, CI/CD, cloud tech More ❯
Posted:

UI developer Azure/React

london, south east england, united kingdom
Henderson Scott
Proficiency in HTML, JavaScript, TypeScript. React, Next.js, Redux, Context API, Node.js. MSAL and Git. Build tools: Webpack, Rollup. CSS/SCSS, SCSS Modules. Testing: Jest, React Testing Library, Enzyme. Experience with micro-front end architecture. Familiarity with Figma, Adobe Suite. Knowledge of OOP, caching, security, CI/CD, cloud tech More ❯
Posted:

Full Stack UI/UX Developer

London Area, United Kingdom
FMX
is a plus · Understanding of trading workflows, market data, or order management systems is a plus Testing & Quality · Experience with frontend testing frameworks (e.g., Jest, React Testing Library) · Understanding of automated testing and CI/CD pipelines is a plus Soft Skills & Collaboration · Strong communication skills · Comfortable with rapid release More ❯
Posted:

Full Stack UI/UX Developer

london, south east england, united kingdom
FMX
is a plus · Understanding of trading workflows, market data, or order management systems is a plus Testing & Quality · Experience with frontend testing frameworks (e.g., Jest, React Testing Library) · Understanding of automated testing and CI/CD pipelines is a plus Soft Skills & Collaboration · Strong communication skills · Comfortable with rapid release More ❯
Posted:

Technical Lead - React JS

London, United Kingdom
iitjobs
in modern frontend tooling (Webpack, Babel, Vite, ESBuild). Knowledge of GraphQL and REST APIs. Experience with unit testing and end-to-end testing (Jest, Cypress, React Testing Library). Strong debugging and performance optimization skills. Nice to Have Experience with Progressive Web Apps (PWAs) and SSR/SSG techniques. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Fullstack Engineer (f/m/d) - Studio

London, United Kingdom
Hybrid / WFH Options
Contentful
demonstrating ownership, urgency, and the ability to drive initiatives independently. Solid Background in Automated Testing: Including both unit and e2e tests, using frameworks like Jest & Playwright. Containerization and Orchestration : Experience with Docker and Kubernetes. Cloud Services Familiarity : Knowledge of cloud platforms like AWS, Azure, or GCP. Preferred Applied AI: Previous More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Software Engineer - Java, Spring Boot, Microservices

East London, London, United Kingdom
TPXImpact Holdings Plc
Automation:Implementing and maintaining continuous integration/continuous deployment pipelines to accelerate development cycles. Code Quality and Testing:Experience with automated testing frameworks (e.g., Jest, JUnit) and best practices for ensuring code quality. DevOps Practices:Expertise in DevOps, particularly around automating deployment, monitoring, and scaling applications. Communication:Able to confidently More ❯
Employment Type: Permanent
Salary: £70,000
Posted:

Frontend Developer

London Area, United Kingdom
Referment
in TypeScript, React, GraphQL, Redux, and CSS-in-JS Familiarity with the React reconciliation process and browser debugging tools Experience in functional programming and Jest for testing Bonus Experience: Knowledge of RxJS, Node.js, WebSockets, Vite/ESBuild, Docker, and more Familiarity with back-end technologies such as C#, Kafka, and More ❯
Posted:

Frontend Developer

london, south east england, united kingdom
Referment
in TypeScript, React, GraphQL, Redux, and CSS-in-JS Familiarity with the React reconciliation process and browser debugging tools Experience in functional programming and Jest for testing Bonus Experience: Knowledge of RxJS, Node.js, WebSockets, Vite/ESBuild, Docker, and more Familiarity with back-end technologies such as C#, Kafka, and More ❯
Posted:

Front End Software Engineer

London, United Kingdom
Hybrid / WFH Options
Onyx-Conseil
React JS. Familiarity with cloud platforms like Azure and data retrieval libraries such as react-query. Testing Savvy: Experience with testing frameworks like Playwright, Jest, and React Testing Library. Design and Usability: Working knowledge of Material-UI library and a keen eye for UX improvement. Collaborative Spirit: Strong communication and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Front End Software Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
Computer Futures
React JS. Familiarity with cloud platforms like Azure and data retrieval libraries such as react-query. Testing Savvy: Experience with testing frameworks like Playwright, Jest, and React Testing Library. Design and Usability: Working knowledge of Material-UI library and a keen eye for UX improvement. Collaborative Spirit: Strong communication and More ❯
Employment Type: Permanent
Salary: £50000 - £70000/annum Benefits
Posted:

Frontend Developer

London Area, United Kingdom
GOAT Interactive
and SOLID principles; Reactjs, Angular, Webpack based web-applications; Familiarity with functional programming REST API, Websockets Reactive Programming (RXJS); Experience of using Test Frameworks (JEST) SCSS/BEM Performance Testing Experience with DevTools and Performance Improvements CI/CD GIT Cross-browser support on mobile devices Upper-Intermediate/Advanced More ❯
Posted:

Frontend Developer

london, south east england, united kingdom
GOAT Interactive
and SOLID principles; Reactjs, Angular, Webpack based web-applications; Familiarity with functional programming REST API, Websockets Reactive Programming (RXJS); Experience of using Test Frameworks (JEST) SCSS/BEM Performance Testing Experience with DevTools and Performance Improvements CI/CD GIT Cross-browser support on mobile devices Upper-Intermediate/Advanced More ❯
Posted:

Software Engineer (FullStack)

London, United Kingdom
Hybrid / WFH Options
Brilliantbrandings
experience or equivalent combination of education, training, and experience; Good to have: Experience with Next.js Experience with Redis/Memcached Experience with PHPUnit, mocha, jest, or similar; Experience in server technologies, specifically AWS; Experience in Docker applications will be a plus; Familiarity with open-source software a plus; Familiarity with More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Remote Full-Stack Laravel Developer - Pioneering Fin-SaaS

London, Finsbury Square, United Kingdom
Hybrid / WFH Options
RecruitmentRevolution.com
systems • Proficient in HTML, CSS, and JavaScript (React and jQuery preferred) • Familiarity with Git for version control • Test-driven development experience with PHPUnit and Jest • Experience integrating third-party services and REST APIs • Exposure to AWS and distributed system architecture Bonus Skills: • Experience refactoring and modernising legacy systems • Familiarity with More ❯
Employment Type: Permanent
Salary: £55000 - £60000/annum + Benefits
Posted:

Senior Frontend Engineer

London, United Kingdom
MarketAxess Holdings Inc
Professional experience working with Git, Git Flow Knowledge of CSS preprocessors, (eg. SASS/LESS/CSS-in-JS/Tailwind) Experience testing with Jest/React Testing Library Desirable experience with DevOps tools Desirable experience with Websockets Desirable experience with ES6, Styled Components, Material UI Desirable experience with OpenFin More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead React Native Engineer

London, United Kingdom
Hybrid / WFH Options
Randstad (Schweiz) AG
Handling: RESTful APIs, state management (Redux, Zustand, Recoil), offline storage, real-time data (WebSockets, Firebase, SignalR). Testing & Quality Assurance: Unit and integration testing (Jest, React Testing Library), UI testing (Detox/Appium), automated testing pipelines. Deployment & DevOps: CI/CD pipelines, App Store & Google Play deployment, OTA updates, crash More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Frontend Engineer

London, United Kingdom
Hybrid / WFH Options
Fresha
and support business processes Technologies - Familiarity with TypeScript, Cordova, Native development for Android and/or iOS, RAIL Performance, PWA, SSR, Node, Cypress and Jest Full Stack - Full-stack experience (double bonus points if Ruby or Elixir!) This list is not exhaustive and there may be other activities you are More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Frontend Engineer

London
Hybrid / WFH Options
Starling Bank
is written in TypeScript. We're using Vanilla Extract for styling paired with React Aria primitives. We write tests with React Testing Library and Jest, as well as Playwright. Finally, we deploy to Kubernetes in production, running on Amazon Web Services. Our technologists are at the very heart of Starling More ❯
Employment Type: Permanent
Posted:

LeadSoftwareEngineerUI-React/Java

London, United Kingdom
Hispanic Alliance for Career Enhancement
qualifications, capabilities, and skills Formal training or certification in software engineering with practical experience. Advanced knowledge of front-end technologies: Typescript, AngularJS, React, Vite, Jest, D3, and related frameworks. Strong back-end expertise in Java and Spring. Experience managing independent work streams and engaging with stakeholders. Practical experience with UX More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:
Jest
London
10th Percentile
£50,000
25th Percentile
£56,250
Median
£67,500
75th Percentile
£87,500
90th Percentile
£165,000