Job Summary:
WHOOP is on a mission to unlock human performance and healthspan through wearable technology. As a Senior iOS Engineer on the Core team, you will build foundational capabilities for the WHOOP iOS app, lead technical planning, mentor engineers, and enhance the overall engineering excellence across the iOS stack.
Responsibilities:
• Lead the design and implementation of core iOS platform capabilities (for example, app architecture, navigation patterns, shared UI components, networking, persistence, and feature flagging)
• Drive technical planning for initiatives, including scoping and sequencing work, identifying dependencies and risks, and communicating tradeoffs and timelines to stakeholders
• Deliver high-quality, member-facing iOS features in Swift, collaborating with cross-functional partners to ensure requirements are met and outcomes are measurable
• Improve app reliability, performance, and maintainability through testing, observability, crash and performance monitoring, and disciplined release practices
• Establish and evolve shared engineering standards through code reviews, documentation, and architectural discussions, influencing patterns used across iOS development
• Mentor and support other engineers through pairing, feedback, and knowledge sharing, helping grow individual capability and the overall health of the codebase
Qualifications:
Required:
• Significant experience building, testing, debugging, and shipping native iOS applications in production environments
• Strong proficiency with Swift and iOS frameworks (for example, SwiftUI, UIKit, XCTest) and experience with modern architecture patterns (for example, MVVM)
• Experience leading technical planning and delivery for ambiguous, cross-cutting iOS initiatives (for example, modularization, large refactors, performance programs, or reliability initiatives)
• Strong foundation in iOS performance and reliability fundamentals (for example, memory management, profiling, and concurrency with Swift Concurrency and/or GCD)
• Experience integrating mobile apps with backend services and APIs (for example, RESTful APIs, authentication flows, and resilient networking)
• Familiarity with common iOS tooling and workflows (for example, Xcode, Git, CI, Fastlane, Swift Package Manager, CocoaPods)
• Demonstrated ability to collaborate effectively across functions (for example, Product, Design, QA, Data, and Backend Engineering) and communicate clearly with technical and non-technical audiences
Preferred:
• Experience building shared mobile foundations across platforms (for example, collaborating closely with Android on patterns and releases)
• Contributing to backend services and APIs (for example, Java)
Company:
WHOOP provides wearable fitness technology and a subscription platform that tracks physiological data for health and performance insights. Founded in 2012, the company is headquartered in Boston, USA, with a team of 501-1000 employees. The company is currently Late Stage.