Senior iOS Engineer (Connectivity)

United States·Bostonsenior

EngineeringOtherMobile DevelopmentMobile Developer

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Overview

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.

Technical Tools

confluencejiraswiftconcurrencydistributed-systems

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’s 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 Github feature, develop, and master branches.

Participate in the release process, including getting the app built, managing build variants, signing, sending and testing through 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 examples applying architectural and platform-based software design principals to build scalable, modular, testable software.

Experience debugging and diagnosing issues across complex or distributed systems (for example: firmware, mobile, backend) is a strong 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 aligns with the same high-quality standards as personal contributions.

Learn more about our Software Org and how to be successful in your engineering career at WHOOP via our Career Framework.

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.

Interested in the role, but don’t meet every qualification? We encourage you to still apply! At WHOOP, we believe there is much more to a candidate than what is written on paper, and we value character as much as experience. As we continue to build a diverse and inclusive environment, we encourage anyone who is interested in this role to apply.

WHOOP is an Equal Opportunity Employer and participates in E-verify to determine employment eligibility. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

The WHOOP compensation philosophy is designed to attract, motivate, and retain exceptional talent by offering competitive base salaries, meaningful equity, and consistent pay practices that reflect our mission and core values.

At WHOOP, we view total compensation as the combination of base salary, equity, and benefits, with equity serving as a key differentiator that aligns our employees with the long-term success of the company and allows every member of our corporate team to own part of WHOOP and share in the company’s long-term growth and success.

The U.S. base salary range for this full-time position is $150,000-$210,000. Salary ranges are determined by role, level, and location. Within each range, individual pay is based on factors such as job-related skills, experience, performance, and relevant education or training.

In addition to the base salary, the successful candidate will also receive benefits and a generous equity package.

These ranges may be modified in the future to reflect evolving market conditions and organizational needs. While most offers will typically fall toward the starting point of the range, total compensation will depend on the candidate’s specific qualifications, expertise, and alignment with the role’s requirements.

Learn more about WHOOP.