Senior frontend engineer leading React architecture for Instacart’s self - serve advertising platform. Building campaign management, reporting, performance, and design - system experiences.
About the role
- Frontend Engineer building scalable React and TypeScript logistics applications for Just Eat Takeaway.com, a global online delivery platform. Owning UI architecture, performance, reliability, and AI-assisted engineering workflows.
Responsibilities
- Design, build, and operate scalable frontend applications using React and TypeScript
- Develop and maintain reusable, responsive UI components
- Optimize application performance for a smooth, low-latency user experience
- Manage complex application state and data fetching patterns
- Integrate frontend applications with REST and GraphQL APIs
- Own frontend reliability through monitoring, alerting, and incident response
- Drive engineering excellence in CI/CD, automated testing, code review, and progressive rollouts
- Collaborate with Product, Mobile, QE, and Data teams on high-quality releases
- Participate in architectural decisions, RFCs, and technical design reviews
- Investigate and resolve production issues using Datadog, distributed tracing, and log analysis
- Participate in the Agile software development cycle within a cross-functional team
- Support and mentor team members and grow frontend engineering practices
Requirements
- 5+ years of experience building and operating production frontend applications at scale
- Strong proficiency in React and TypeScript
- Deep understanding of modern CSS, including CSS Modules, Tailwind, or CSS-in-JS, and responsive design principles
- Experience with Jest, React Testing Library, and Cypress or Playwright
- Strong knowledge of Web APIs, browser internals, and performance optimization techniques
- Experience with CI/CD pipelines for web applications and modern build tools such as Vite and Webpack
- Production experience deploying to AWS and/or Azure and running services on Kubernetes (EKS)
- Required hands-on experience with AI-assisted development tools such as GitHub Copilot, Cursor, Claude Code, or similar
- Experience making repositories agent-ready with clear READMEs, AGENTS.md / CLAUDE.md files, structured code conventions, and reproducible local setups
- Experience using AI agents for code generation, refactoring, debugging, and automated PR workflows
- Experience integrating AI into frontend engineering workflows
- Understanding of prompt engineering and evaluation of AI-generated outputs in a software engineering context
- Awareness of best practices for AI-driven development, including reliability, reproducibility, and accessibility
- Experience with Vue 2 and Vue 3 is a plus
- Familiarity with design systems and Figma is a plus
- Experience working in Agile, fast-paced, continuous delivery environments
Benefits
- Monthly Skip spend allowance
- Generous PTO with a buy and sell program with up to 5 extra days
- Up to 20 weeks top up for parental leave
- Flexible medical & dental insurance for you and your family
- World-class training resources
- Exclusive offers from Workperks from hundreds of top brands
- RRSP contributions with diverse investment portfolios
- Paid sick time
- Well-being support programs
- Freedom to work from almost anywhere in the world for 4 weeks a year
- Dedicated mentorship
- Global mobility pathways
- Wellness-first culture rooted in true diversity and inclusion
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