Senior iOS Engineer

Instaleap • Colorado Springs, CO

2d • Hybrid

About The Position

As an iOS Engineer at Instacart, you will play a key role in developing features for our Shopper iOS app. With hundreds of thousands of Shoppers depending on Instacart for their work and thousands of retailers relying on Instacart for their picking tech, your contributions will be crucial in scaling and improving the mobile experience to cater to their specific needs. This position focuses on leading the architecture, design, and development of our iOS application, ensuring they provide the high performance and reliability our Shoppers and retailers depend on. As an iOS lead on the Pick and Deliver org, you will be responsible for architecting and delivering fast, reliable, and delightful iOS experiences that directly impact how our shoppers and retailers’ associates pick and deliver orders every day. You’ll own high-visibility features end to end, collaborate closely with backend, iOS, design, product, data, and retailer partners, and help raise the bar for code quality, performance, and user experience across our iOS surfaces. If you thrive on tackling complex problems, balancing new feature work with retailer-driven requests and technical debt, and rolling up your sleeves to deliver impact, this role is for you.

Requirements

• 8+ years of iOS development experience.
• Expertise in iOS development technologies, including Swift, SwiftUI, UIKit, RxSwift, Swift Concurrency or Combine.
• Expertise in performance optimization on iOS.
• Experience instrumenting apps for analytics, crash reporting, and performance monitoring.
• Proven ability in rigorous unit testing and practical problem-solving.
• Proficient in debugging and analytical skills using XCode tooling, profilers, and logs.
• Excellent communication and leadership skills, capable of collaborating and influencing cross-functional teams.
• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.

Nice To Haves

• Advanced proficiency in Apple technologies like Location, Push notifications
• Experience with Kotlin Multi-Platform
• Experience with monitoring and observability tools like Datadog, Sentry.
• Expertise in profiling and performance optimization on iOS (startup, rendering, memory, and network performance).
• Experience building large-scale, multi-tenant enterprise apps or operations tools.
• Adaptability and willingness to wear multiple hats in a fast moving environment.
• Exposure to AI-assisted development and agentic coding workflows.
• Domain experience in retail, logistics, or fulfillment systems.

Responsibilities

• Architect, build, and maintain complex iOS applications using Swift, SwiftUI, UIKit, RxSwift, Swift Concurrency or Combine.
• Implement pixel-perfect UIs that faithfully match designs and scale across devices, with a focus on accessibility and internationalization.
• Integrate with backend services via RPC, REST and Websockets to make sure we are delivering a great mobile user experience that is super-fast for end users.
• Own important pieces of the product that have high visibility both internally and externally.
• Envision new products and features that are inspired, considered, and forward thinking.
• Own feature areas end to end—from technical design and instrumentation to rollout, monitoring, and iteration—driving measurable gains in picker speed and accuracy.
• Communicate and collaborate extensively across multiple teams and functions within the company to drive consensus, align goals, and achieve effective cross-functional outcomes.
• Profile, benchmark, and optimize app performance; track stability and quality with observability and crash monitoring tools.

Benefits

• Hybrid Work: Work together as a team.
• Flexible hours: We trust your work and skills.
• Additional days off to vacations.
• Half day off on your birthday.
• Access to Educational Budget.
• Health insurance: Get the attention and care that you deserve. Available in some countries.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior