Senior frontend engineer leading React architecture for Instacart’s self-serve advertising platform. Building campaign management, reporting, performance, and design-system experiences.
Responsibilities
Own the Ads Manager frontend technical direction and lead large, multi-quarter initiatives
Lead the technical roadmap and architecture for Ads Manager web applications
Design, build, and maintain React UIs for campaign creation, management, reporting, and optimization
Define and evolve shared components, state management, and frontend abstractions
Partner with backend teams on API and data contracts
Collaborate with frontend leads and company peers on frontend standards and best practices
Champion observability, performance, and reliability, including metrics, logging, tracing, and on-call readiness
Drive frontend modernization, technical debt paydown, migrations, and refactors
Embed security-by-design and lead responses to significant security or reliability issues
Lead cross-team initiatives and align stakeholders across Ads and partner teams
Work with designers to build a best-in-class user experience
Mentor and sponsor engineers up to L5 and improve onboarding and team practices
Help define best practices for AI-assisted development tools
Requirements
8+ years of experience building modern web applications
Deep expertise in Node.js and React, including hooks, state management, and performance tuning
Strong frontend architecture skills: modularization, shared components, routing, data fetching, and error handling
Experience designing and integrating REST and/or GraphQL APIs
Experience leading large, ambiguous, multi-stakeholder projects from design through rollout and operations
Demonstrated impact on team productivity and code health through abstractions, tooling, testing, and CI improvements
Experience with monitoring and observability for web applications, such as Datadog or similar
Comfortable using AI-assisted developer tools
Excellent communication and collaboration skills
Currently eligible to work from Ontario, Alberta, British Columbia, or Nova Scotia, Canada
Preferred: experience with large-scale data-heavy UIs, GraphQL at scale, Selenium/Cypress/Playwright, frontend performance and reliability, major migrations, Figma, and mentoring L3–L5 engineers
Benefits
New hire equity grant
Annual refresh grants
Flexible work location options, including home, office, or coffee shop
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