Senior iOS Engineer

At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers.

Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table.

There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work.

Instacart’s Stores Intelligence organization is building the operating system for brick-and-mortar grocery. As a Senior iOS Engineer on the In-Store Mode team, you will build the mobile experience that helps people shop in physical grocery stores. Customers plan the trip at home, then use the same app in the aisle to find items, discover deals, and use their loyalty rewards.

What makes the engineering interesting:

• One experience, many apps: In-Store Mode runs inside many grocers' branded apps and blends native iOS with web, so you'll design for flexibility, consistency, and a clear boundary between the two.
• The physical world is challenging: The same feature has to work in a small neighborhood market and a large wholesale store, with very different layouts, assortments, and shopping habits, while powering in-store navigation and discovery.

• Lead iOS projects end to end, from technical design and rollout strategy through production operations and debugging.
• Shape product requirements by bringing a technical perspective and making trade-offs between scope, quality, and timeline.
• Build and maintain integrations between native iOS code and web content.
• Use AI-assisted and agentic development tools to boost your own and the team's productivity, and suggest improvements to how the team builds.
• Collaborate with engineers, designers, data scientists, and PMs across teams to align goals and deliver cross-functional outcomes.

• 5+ years of experience in mobile development, software engineering, or related experience
• Strong experience with iOS fundamentals, including Swift, SwiftUI, UIKit, Swift Concurrency or Combine
• Experience with networking protocols (RPC, REST API, WebSockets)
• Experience designing for performance, observability, and reliability in production mobile apps, including profiling and monitoring
• Strong testing discipline, including unit tests for the code you write

• Experience building consumer apps in retail, e-commerce, or marketplace settings
• Experience building configurable or white-label apps, or shared components used across multiple apps
• Experience building mobile apps that stay resilient with limited or unreliable connectivity
• Experience running experiments and A/B tests, and using the results to guide product decisions
• Experience with Apple frameworks such as Core Location and push notifications
• Hands-on experience with AI-assisted and agentic coding workflows
• Experience with WKWebView and native-to-web communication

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