Senior iOS Engineer; Connectivity

Overview

Join to apply for the Senior iOS Engineer (Connectivity) role at WHOOP
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At WHOOP, we re on a mission to unlock human performance and healthspan. WHOOP empowers people to perform at a higher level through a deeper understanding of their bodies and daily lives. We handle massive amounts of data continuously streaming up to the cloud from people improving their health and wellness to the world  greatest sports teams and athletes, mandating a fault-tolerant and highly available product.

The Connectivity Software Team builds the critical link between WHOOP hardware, the iOS app, and the cloud. As an iOS Software Engineer on this team, you ll design and implement the software that enables WHOOP s wearable sensors to communicate seamlessly with the mobile platform. You ll develop and optimize connectivity experiences that are robust, efficient, and invisible to the member ensuring reliable data flow across our entire ecosystem.

• Design, implement, and maintain iOS application components that interface directly with WHOOP hardware over Bluetooth Low Energy (BLE), Wi-Fi, or other communication protocols.
• Develop background and system-level iOS services that ensure reliable device connectivity, synchronization, and data transfer.
• Leverage Swift and Combine to build resilient, efficient, and maintainable reactive pipelines for connectivity and data management.
• Collaborate closely with embedded firmware, mobile, and cloud engineers to diagnose and resolve issues across a distributed system.
• Drive continuous improvement of performance, power efficiency, and reliability in the WHOOP connectivity layer.
• Champion strong software architectural principles for testable, scalable, maintainable software on your own team and across the organization.
• Document new features and architecture using Jira, Confluence and preparing code using Git Hub feature, develop, and master branches.
• Participate in the release process, including getting the app built, managing build variants, signing, deploying to Firebase, and submitting to the App Store.

• BS or MS in Computer Science, Electrical Engineering, or a related technical field, or equivalent experience.
• 3+ years of professional iOS software engineering experience with a solid foundation in Swift, iOS system APIs, concurrency, and memory management.
• Hands-on experience with Combine and background task processing for non-UI iOS features.
• Demonstrated experience applying architectural and platform-based software design principles to build scalable, modular, testable software.
• Experience debugging and diagnosing issues across complex or distributed systems (e.g., firmware, mobile, backend) is a plus.
• Excellent collaboration and communication skills with a focus on cross-functional problem solving.
• Strong commitment to embracing and leveraging AI tools in day-to-day tasks, ensuring AI-assisted work meets high-quality standards.

This role is based in the WHOOP office located in Boston, MA. The successful candidate must be prepared to relocate if necessary to work out of the Boston, MA office.