iOS Engineer, Core App for Performance & Longevity

WHOOP; Boston (MA); On-site; USD 105,000 - 145,000; Full time

Job summary

WHOOP is seeking an iOS Engineer I on the Core team to build foundational features for the iOS App and empower members to optimize performance and longevity. You will work with product, design, data science, and performance science to shape polished member-facing experiences.

The role is based in Boston, MA and requires building scalable native iOS components, testing, and maintaining high-quality code while leveraging AI tools. Base salary and equity are part of total compensation.

Qualifications

• Demonstrated curiosity for building high-quality software and eagerness to learn in a collaborative engineering environment.
• Familiarity with Swift and modern iOS frameworks such as SwiftUI, UIKit, and XCTest.
• Familiarity with mobile architecture patterns such as MVVM.
• Experience integrating mobile applications with RESTful APIs, including networking and authentication flows.
• Familiarity with iOS development tools and workflows such as Xcode, Git, Swift Package Manager, and CI.
• Demonstrated ability to write maintainable, well-tested code and clear technical documentation.
• Enthusiasm in leveraging AI tools while maintaining high standards for quality and engineering excellence.
• Bonus: Exposure to backend development or cross-platform mobile development.

Responsibilities

• Collaborate with the team and cross-functional partners through feature ideation, planning, and development to iteratively deliver new capabilities.
• Contribute to technical planning by breaking down requirements into clear tasks, identifying risks and edge cases, and delivering iteratively with support from senior engineers.
• Build and maintain native iOS features in Swift, communicating with RESTful backends to deliver reliable, high-quality member experiences.
• Improve app quality through testing, debugging, code reviews, and performance monitoring.
• Document features and technical decisions while learning shared engineering practices.

Skills

Swift

SwiftUI

UIKit

Xcode

REST APIs

MVVM

CI/CD

Git

Swift Package Manager

Code quality

Tools

Xcode

Git

Swift Package Manager

CI

Job description

WHOOP is seeking an iOS Engineer I on the Core team to build foundational features for the iOS App and empower members to optimize performance and longevity. You will work with product, design, data science, and performance science to shape polished member-facing experiences.

The role is based in Boston, MA and requires building scalable native iOS components, testing, and maintaining high-quality code while leveraging AI tools. Base salary and equity are part of total compensation.