1 to 25 of 50 Jest Jobs in London

Strong experience with CI/CD pipelines (GitLab preferred) and automated build/test processes Experience in automated testing using modern frameworks (e.g., Jest for Node.js applications) Strong Agile delivery experience with ability to collaborate in multi-disciplinary teams Desirable Skills: Holding Active SC Clearance or Held Active clearance ...

Services, AKS, and storage. Experience developing and consuming APIs and managing data exchange between systems. Familiarity with CI/CD pipelines, testing frameworks (JUnit, Jest, Cypress), and Git workflows. Awareness of secure coding practices, authentication (OAuth/OIDC), and identity management. Strong collaboration and problem-solving skills in multidisciplinary teams. ...

MongoDB. We use AWS for our cloud services and our infrastructure is managed with K8s, Terraform, Github Actions and Jenkins. We test with Jest and Cypress, and monitor our systems with Prometheus, Grafana and Sentry. What We Offer Remote-first culture with an office in London Bridge (optional) Competitive salary ...

more. Emphasis on an API-first approach to software development. Proficiency in unit and integration testing using frameworks like Jest, and in using tests to verify and constrain agent output. Expertise in consuming RESTful services, which includes adeptly handling JSON data. Proven experience in continuous integration practices, encompassing source control ...

Grafana). Containerization : Docker and Kubernetes. APIs : REST, GraphQL, OpenAPI. Databases : SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis). Testing : Unit and functional testing (Jest, Cypress, Mocha). Soft Skills Strong communication skills for technical and non-technical stakeholders. Ability to work in fast-paced, complex environments. Proactive problem-solving ...

Microservices architecture and messaging systems (Kafka, RabbitMQ) Cloud platforms (AWS, Azure, or GCP) and containerization (Docker, Kubernetes) Testing: JUnit and Mockito on the backend; Jest, React Testing Library, and Cypress or Playwright on the frontend Due to the volume of applications received, unfortunately we cannot respond to everyone. #J ...

frontend CI/CD practices using GitHub Actions, Azure DevOps, Jenkins, or equivalent platforms. Establish unit, integration, and end-to-end testing strategies using Jest, React Testing Library, Playwright, or Cypress. Drive Core Web Vitals improvements, bundle optimization, caching, and rendering strategies. Establish frontend code quality, security, and observability standards. ...

frontend CI/CD practices using GitHub Actions, Azure DevOps, Jenkins, or equivalent platforms. Establish unit, integration, and end-to-end testing strategies using Jest, React Testing Library, Playwright, or Cypress. Drive Core Web Vitals improvements, bundle optimization, caching, and rendering strategies. Establish frontend code quality, security, and observability standards. ...

frontend CI/CD practices using GitHub Actions, Azure DevOps, Jenkins, or equivalent platforms. Establish unit, integration, and end-to-end testing strategies using Jest, React Testing Library, Playwright, or Cypress. Drive Core Web Vitals improvements, bundle optimization, caching, and rendering strategies. Establish frontend code quality, security, and observability standards. ...

based) and underlying services/apps including the databases that underpin them. Test-Driven Development - You're very familiar with testing frameworks such as Jest and Pact. Cloud & DevOps - You can build, deploy and run your systems end-to-end, with no manual configuration or intervention. We use Terraform ...

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, synonyms), aggregations, filters ...

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 ...

e.g. OpenTelemetry, Prometheus) Comprehensive testing across unit, integration and functional layers, including Go's built-in testing tooling and frontend testing frameworks such as Jest or React Testing Library Go modules and dependency management Go performance fundamentals, including profiling with pprof, memory management and garbage collection behaviour You’ll demonstrate ...

experience with React, TypeScript, HTML, CSS and web technologies Commitment to maintaining high quality software through the use of automated testing tools such as Jest and Cypress/Playwright Experience with backend typescript, e.g. Node JS, Nest JS and express. Experience with Azure DevOps is a plus. Familiarity with ...

Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL) Elasticsearch/Opensearch Unit testing and automation Testing frameworks (e.g. Mocha, Jest, Cypress) Experience working in an Agile delivery team Use of code repositories (e.g. GitLab); familiarity with branching strategies, pull requests and merge processes Benefits: £: Competitive ...

technologies, especially AWS (Amplify, S3, Lambda) Experience with front-end build tools and bundlers (Webpack, Babel, npm, Yarn) Experience with testing frameworks and tools (Jest, React Testing Library, Cypress) Collaborate on UI/UX design and translate design mockups into code Understand accessibility (a11y) and web performance best practices Experience ...

demonstrate the result. Collaborate with designers and product managers. Nice to Have Experience with React, Express, and SQL/NoSQL basics. Familiarity with testing (Jest), Postman, and simple CI (GitHub Actions). Interest in accessibility (a11y) and performance (Lighthouse). About You You are currently studying a computing/ ...

problem-solving skills. Proactive communicator with owned assignments. Ability to manage time effectively and meet realistic deadlines. Experience with testing frameworks such as Jest or RTL. Understanding of build tools such as Webpack, Vite, Parcel. Understanding of Pre-processors such as SASS, CSS Modules, JS Compilation. Understanding of CI/ ...

projects demand.* Languages & Frameworks: Python (3.10+), TypeScript, JavaScript (ES6+), SQL, Bash · Frontend: React.js, Next.js (App Router & Server Components), Tailwind CSS, ShadCN UI, Redux, Zustand, Jest, Cypress.* Build AI product UX patterns (streaming, review loops, provenance/citations, long-running tasks, error-recovery* Backend: Django (5.x+), DRF, FastAPI, Pydantic, Celery, Django ...

frontend security Clear communication and the ability to explain technical choices to technical and non-technical people Nice to have Design system experience Jest, Jasmine, Cypress, Playwright or similar NgRx or Angular signals Web performance optimisation and tools such as Sentry Docker, AWS and modern deployment pipelines Experience in agile ...

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. Familiarity ...

Testing Discipline - A test‐first mindset with proficiency in unit, integration, contract and performance testing frameworks appropriate to each language (e.g. JUnit, xUnit, pytest, Jest). CI/CD & DevOps - Hands‐on experience owning and debugging CI/CD pipelines (GitLab preferred), including automated build, test and release, and deploying ...

patterns.Testing Discipline - A test-first mindset with proficiency in unit, integration, contract and performance testing frameworks appropriate to each language (e.g. JUnit, xUnit, pytest, Jest).CI/CD & DevOps - Hands-on experience owning and debugging CI/CD pipelines (GitLab preferred), including automated build, test and release, and deploying services ...

Strong track record of end-to-end feature ownership from Figma mocks to app deployment and post-release monitoring. Disciplined approach to automated testing (Jest, React Testing Library, XCTest/Espresso, Playwright/Cypress). Excellent debugging skills across web browsers, native mobile runtimes, device profiles, and network conditions. Product ...

experience 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 ...