Permanent Jest Jobs in the City of London

1 to 25 of 33 Permanent Jest Jobs in the City of London

UI MSAL Developer

City of London, London, United Kingdom
Tata Consultancy Services
Typescript, CSS, SCSS, SCSS modules. Hands on experience in Git. Strong Skills in React, Next.js, Redux, React Context API, and State management. Good understanding of the Testing frameworks e.g., Jest, React testing library, and Enzyme. Strong working experience in package Build tools e.g., Webpack and Rollup. Experienced in building and deploying micro-frontend applications. Has the flexibility and understanding to More ❯
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UI MSAL Developer

london (city of london), south east england, united kingdom
Tata Consultancy Services
Typescript, CSS, SCSS, SCSS modules. Hands on experience in Git. Strong Skills in React, Next.js, Redux, React Context API, and State management. Good understanding of the Testing frameworks e.g., Jest, React testing library, and Enzyme. Strong working experience in package Build tools e.g., Webpack and Rollup. Experienced in building and deploying micro-frontend applications. Has the flexibility and understanding to More ❯
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Software Engineering Manager - Unified Client Experience (UCX)

City of London, London, United Kingdom
Hybrid / WFH Options
Hargreaves Lansdown
innovation go hand-in-hand. Your Technical Toolkit React/React Native/TypeScript Swift (iOS)/Kotlin (Android) JavaScript/HTML/CSS Figma/Git Testing frameworks : Jest, Cypress, XCTest, Espresso CI/CD pipelines : GitHub Actions, CircleCI, Bitrise Cloud-native architecture : AWS, Docker, Kubernetes Observability tools Interview Process 3 Stage Interview Stage 1 - Discussion with our Hiring More ❯
Employment Type: Permanent, Work From Home
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Senior Full Stack Software Developer

City Of London, England, United Kingdom
Hybrid / WFH Options
Matched
equivalent experience. Familiarity with RESTful APIs and mobile libraries for networking. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud message APIs and usage of push notifications. Knowledge of CI/CD pipelines, code signing More ❯
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Senior Full Stack Software Developer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Matched
equivalent experience. Familiarity with RESTful APIs and mobile libraries for networking. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud message APIs and usage of push notifications. Knowledge of CI/CD pipelines, code signing More ❯
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Senior Full Stack Software Engineer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Matched
equivalent experience. Familiarity with RESTful APIs and mobile libraries for networking. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud message APIs and usage of push notifications. Knowledge of CI/CD pipelines, code signing More ❯
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Principal Software Engineer - Unified Client Experience (UCX)

City of London, London, United Kingdom
Hybrid / WFH Options
Hargreaves Lansdown
Kotlin (Android) JavaScript/HTML/CSS RDBMS (Oracle, Sybase)/NoSQL (Document DB) AWS/Docker/Kubernetes CI/CD pipelines : GitHub Actions, CircleCI, Bitrise Testing frameworks : Jest, Cypress, XCTest, Espresso Observability tools : Prometheus, Grafana Interview Process 3 Stage Interview Stage 1 - Discussion with our Hiring Manager (30mins): A chance to talk with our Hiring Manager in more More ❯
Employment Type: Permanent, Work From Home
Salary: £90,000
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Full Stack Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
Bounteous
GraphQL, and WebSockets - Experience with Git, CI/CD pipelines, and cloud platforms (GCP) Nice to Have: - Experience with Docker and container orchestration (e.g., Kubernetes) - Familiarity with testing frameworks (Jest, Mocha, Cypress) - Knowledge of performance optimization and security best practices - Contributions to open-source projects or a strong GitHub portfolio Regards Anita More ❯
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Full Stack Engineer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Bounteous
GraphQL, and WebSockets - Experience with Git, CI/CD pipelines, and cloud platforms (GCP) Nice to Have: - Experience with Docker and container orchestration (e.g., Kubernetes) - Familiarity with testing frameworks (Jest, Mocha, Cypress) - Knowledge of performance optimization and security best practices - Contributions to open-source projects or a strong GitHub portfolio Regards Anita More ❯
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Full Stack Engineer

City Of London, England, United Kingdom
Hybrid / WFH Options
Matched
equivalent experience. Familiarity with RESTful APIs and mobile libraries for networking. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud message APIs and usage of push notifications. Knowledge of CI/CD pipelines, code signing More ❯
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Full Stack Engineer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Matched
equivalent experience. Familiarity with RESTful APIs and mobile libraries for networking. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud message APIs and usage of push notifications. Knowledge of CI/CD pipelines, code signing More ❯
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Junior Developer

City of London, London, United Kingdom
Hybrid / WFH Options
develop
Tech Stack Frontend Next.js (App Router, React Server Components) React + Zustand shadcn/ui + TailwindCSS Zod (for validation) Backend NestJS + TypeORM Redis + Bull/BullMQ Jest (for testing) Architecture & Infrastructure 100% TypeScript codebase pnpm monorepo Docker + Kubernetes SQL databases 🎯 Key Responsibilities Design, build, and maintain scalable full-stack features using TypeScript Develop intuitive, high-performance More ❯
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Junior Developer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
develop
Tech Stack Frontend Next.js (App Router, React Server Components) React + Zustand shadcn/ui + TailwindCSS Zod (for validation) Backend NestJS + TypeORM Redis + Bull/BullMQ Jest (for testing) Architecture & Infrastructure 100% TypeScript codebase pnpm monorepo Docker + Kubernetes SQL databases 🎯 Key Responsibilities Design, build, and maintain scalable full-stack features using TypeScript Develop intuitive, high-performance More ❯
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Senior Software Engineer, Frontend

City of London, London, United Kingdom
Hybrid / WFH Options
Travelex
fluency with TypeScript, Next.js and React Experience with design systems, component libraries and Storybook Familiarity with state management libraries Experience with the testing pyramid and tools such as Vitest, Jest, Playwright Strong understanding of non-functional requirements (e.g. Accessibility, Security & Performance) Understanding of CI/CD practices and deployment pipelines Proficient with Git version control Nice to have: Experience with More ❯
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Senior Software Engineer, Frontend

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Travelex
fluency with TypeScript, Next.js and React Experience with design systems, component libraries and Storybook Familiarity with state management libraries Experience with the testing pyramid and tools such as Vitest, Jest, Playwright Strong understanding of non-functional requirements (e.g. Accessibility, Security & Performance) Understanding of CI/CD practices and deployment pipelines Proficient with Git version control Nice to have: Experience with More ❯
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Lead Software Engineer - Full Stack (FinTech)

City of London, London, United Kingdom
Twelve
such as: | **Backend & Core Services** | Python, NodeJS, TypeScript | | **Frontend** | React, TypeScript, styled-components | | **Data & Persistence** | PostgreSQL, MySQL, BigQuery | | **Cloud & DevOps** | AWS, GCP, Docker, Terraform, GitHub Actions/CircleCI | | **Testing** | Jest, React Testing Library, Cypress, pytest | Compensation: Highly competitive salary and equity package, corresponding with experience and impact. Work Model: A truly flexible hybrid environment that balances deep focus work (remote More ❯
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Lead Software Engineer - Full Stack (FinTech)

london (city of london), south east england, united kingdom
Twelve
such as: | **Backend & Core Services** | Python, NodeJS, TypeScript | | **Frontend** | React, TypeScript, styled-components | | **Data & Persistence** | PostgreSQL, MySQL, BigQuery | | **Cloud & DevOps** | AWS, GCP, Docker, Terraform, GitHub Actions/CircleCI | | **Testing** | Jest, React Testing Library, Cypress, pytest | Compensation: Highly competitive salary and equity package, corresponding with experience and impact. Work Model: A truly flexible hybrid environment that balances deep focus work (remote More ❯
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Senior Full Stack Engineer (Typescript + React)

City of London, London, United Kingdom
Oliver Bernard
of delivery in our technologies. 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. Familiarity with Git and version control. Experience with Agile development methodologies. A pragmatic, right-tool More ❯
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Full Stack Engineer

City of London, London, United Kingdom
Clarity (formerly Anecdote)
outcomes. AI-native 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, synonyms), aggregations, filters, sorting, performance tuning. Cloud More ❯
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React/TypeScript/JavaScript : Frontend Software Engineer - Elite Trading Firm - London

City of London, London, United Kingdom
Hunter Bond
data visualization Working in a culture where engineering excellence and code quality are non-negotiable Tech Stack: Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: Experience with WebSockets, performance profiling, or custom charting libraries (e.g., D3.js, Highcharts) What They’re Looking For: Strong experience with React and modern JavaScript/TypeScript Deep More ❯
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React/TypeScript/JavaScript : Frontend Software Engineer - Elite Trading Firm - London

london (city of london), south east england, united kingdom
Hunter Bond
data visualization Working in a culture where engineering excellence and code quality are non-negotiable Tech Stack: Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: Experience with WebSockets, performance profiling, or custom charting libraries (e.g., D3.js, Highcharts) What They’re Looking For: Strong experience with React and modern JavaScript/TypeScript Deep More ❯
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Senior Software Engineer (React/Node)

City of London, London, United Kingdom
Hybrid / WFH Options
Oliver Bernard
requirements: Commercial experience with their stack TypeScript, React, Next.js and Node.js Strong expertise in designing and maintaining scalable, high-performance web applications A good understanding of databases Experience using Jest and Cypress If you’re a Senior Software Engineer (React/Node) looking to work in a tech for good organisation, please apply. More ❯
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Senior Frontend Engineer (Product) - AI SaaS - London (Hybrid)

City of London, London, United Kingdom
Hybrid / WFH Options
Stax - Deeptech Talent
Partner with cross-functional teams to translate complex, ambiguous problems into elegant, scalable solutions. Tech Ecosystem React · TypeScript · Vite · Next.js · WebAssembly (DuckDB, WebGPU) · D3/visx · Storybook · Tailwind CSS · Jest · Cypress · Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record in front-end architecture (modular codebases, micro-frontends, design systems, scalability). Strong More ❯
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Senior Frontend Engineer (Product) - AI SaaS - London (Hybrid)

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Stax - Deeptech Talent
Partner with cross-functional teams to translate complex, ambiguous problems into elegant, scalable solutions. Tech Ecosystem React · TypeScript · Vite · Next.js · WebAssembly (DuckDB, WebGPU) · D3/visx · Storybook · Tailwind CSS · Jest · Cypress · Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record in front-end architecture (modular codebases, micro-frontends, design systems, scalability). Strong More ❯
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Senior Software Engineer | Typescript | Fully Remote

City of London, London, United Kingdom
Hybrid / WFH Options
Wilson Brown
and Product development. Role Information: Salary : Up to £100,000 (DOE) + Equity Location : Fully remote (UK only) Stack : TypeScript, Next.js, React, Tailwind, Shadcn, Prisma, Postgres, Redis, GCP, OpenAI, Jest, Playwright You’ll join a remote first, high-trust engineering team working with a modern, cloud-native stack - with real influence over technical decisions from day one. This is a More ❯
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Jest
the City of London
10th Percentile
£64,250
25th Percentile
£74,375
Median
£98,750
75th Percentile
£118,750