11 of 11 Jest Jobs in London

with CI/CD pipelines. Preferred Qualifications Experience with JAVAScript and React. Knowledge of front-end build tools. Familiarity with testing frameworks (JUnit, Mockito, Jest, etc.). Strong problem-solving and analytical skills. ...

libraries (e.g., Redux, Zustand). Solid experience integrating front‐end apps with RESTful APIs, (GraphQL is a bonus). Experience with testing frameworks (e.g., Jest , React Testing Library ). Comfortable with CI/CD pipelines, version control ( Git ), modern build tools and an eye for performance optimisation. Strong understanding ...

features across the full stack of a high- performance trading platform . Work primarily with: TypeScript ( Node. js & React) Monorepo tooling, GitHub, GitHub Actions Jest, Playwright Redis, MS SQL, WebSockets Docker, Kubernetes Observability tools ( Grafana, Prometheus, SonarQube) Take end- to- end ownership of features from design to production. Collaborate closely ...

stack features using TypeScript, Node.js and React Working on real-time systems using WebSockets, Redis and SQL Driving high-quality engineering through automated testing (Jest, Playwright) Collaborating closely with DevOps on observability, pipelines and system performance Taking ownership from design through to production Contributing to code reviews and raising ...

features across the full stack of a high- performance trading platform . Work primarily with: TypeScript ( Node. js & React) Monorepo tooling, GitHub, GitHub Actions Jest, Playwright Redis, MS SQL, WebSockets Docker, Kubernetes Observability tools ( Grafana, Prometheus, SonarQube) Take end- to- end ownership of features from design to production. Collaborate closely ...

features across the full stack of a high- performance trading platform . Work primarily with: TypeScript ( Node. js & React) Monorepo tooling, GitHub, GitHub Actions Jest, Playwright Redis, MS SQL, WebSockets Docker, Kubernetes Observability tools ( Grafana, Prometheus, SonarQube) Take end- to- end ownership of features from design to production. Collaborate closely ...

stack: Designing, building, and maintaining features for an internal trading platform Working with: TypeScript, Node.js, React, Redis, MS SQL, WebSockets Docker, Kubernetes, GitHub Actions, Jest, Playwright Grafana, Prometheus, SonarQube Taking end‐to‐end responsibility from design → production Collaborating closely with platform/DevOps engineers Enhancing observability, automation, and operational excellence ...

work with a variety of technologies. You’ll ideally have experience with some of the following, or be open to learning: JavaScript: React, Node, Jest, Cypress Ruby (non-Rails environment) – nice to have AWS: EC2, ECS, Lambda, S3, SQS Databases: MongoDB & PostgreSQL They are looking for someone who is: Proactive ...

implement improvements. Required Qualifications & Experience Strong TypeScript and React experience (React 16+). Proficient in JavaScript ES6+. Experience with React Testing frameworks like Jest and Enzyme. A keen sense of design and desire to build a better mousetrap. General understanding of supporting infrastructure: git, microservices, containers, etc. Comfortable working with ...

helpingtoshapethefutureofmediatechnology. KeyResponsibilities Leadarchitectureanddirectionforarangeofdigitalproducts. Championengineering,establishandupholdcodingbestpractices. CollaboratewithPM'sPO's,designers,andseniorstakeholderstoshapesolutions. Leadandguideteamsonfeaturebreakdown,technicalplanning,andreleaseprocesses. Manageandmentorengineersalongwithgrowingahigh-performingteams. Skills&ExperienceRequired ExtensiveexperiencewithJavaScript/TypeScript,React,Redux,andNode.js StrongexperienceinTDDandtestingframeworks(Jest,Mocha,Cypres/Playright) Atrackrecordinmodularsystemarchitectureandmulti-tenantplatformdevelopment. ExperiencewithAWS Deepunderstandingofsoftwarearchitecture,security,performance,andcontinuousdelivery. Agilemindsetwithexperienceincross-functionalteams. Iftheaboveisofinterest,pleaseapplywithanupdatedcopyofyourCVandamemberoftheScalersteamwillbeintouch. ...

Haves: Strong experience in Core React Native 0.81, TypeScript 5.x, React 19 Strong experience in State Redux Toolkit , Zustand , React Query , Apollo Client Testing Jest , React Native Testing Library strong requirement many test files Any Certifications required: Preferred but not mandatory Performance Expectations : Core React Native 0.81, TypeScript 5.x, React … State Redux Toolkit Zustand React Query Apollo Client Testing Jest React Native Testing Library strong requirement many test files UI Styled Components 6, Reanimated, Gesture Handler, Lottie, Skia APIs GraphQL with codegen, REST with React Query Thirdparty Sentry, NewRelic, Optimizely, Braze, Auth0, Contentful Agile Work Experience ...