Staff Software Engineer, Web

Instacart is transforming the grocery industry by providing essential services for customers to access the food they love. The Staff Software Engineer, Web will own the web platform architecture that powers discovery at scale, collaborating closely with various teams to enhance frontend performance and user engagement.

Responsibilities:

• Set the technical direction for Instacart's home and search web experiences, including architecture decisions around rendering, data fetching, and client performance
• Build innovative features that help customers discover new retailers and deepen engagement with existing ones
• Drive improvements to Core Web Vitals, page load performance, and overall frontend health
• Improve SEO and organic discovery to help new customers find Instacart
• Partner with ML and backend teams to surface personalized, real-time search and recommendations on the web
• Mentor senior engineers and grow engineering capability across the team

Requirements:

• Extensive experience in a senior/staff engineer role with a strong focus on web systems design and frontend architecture
• Deep expertise in modern web technologies (React, TypeScript, Next.js etc.) with the ability to reason about end-to-end system architecture across client and server
• Proven experience designing and operating large-scale web platforms supporting multiple product surfaces
• Ability to dive deep into web performance optimization rendering, Core Web Vitals, bundle size, caching strategies, and client-side data fetching
• Experience leading engineering design reviews and influencing technical decisions across teams
• Experience building web systems used and maintained by large engineering organizations (30+ engineers)
• Strong communication skills and the ability to influence technical strategy across organizational boundaries
• Track record of mentoring engineers and driving long-term technical vision
• 10+ years of software engineering experience with a focus on frontend
• Experience in Search, Recommendations, Personalization, or related discovery platforms is a huge plus
• Experience with hybrid architectures, webview-based client systems, or cross-platform web rendering
• Experience partnering closely with machine learning, product, and design teams
• Experience building frontend platforms or design systems that support multiple feature teams at scale
• Understanding of the online grocery, marketplace, or e-commerce ecosystem
• Bachelor's degree or equivalent experience in Computer Science or a related field