Staff iOS Engineer (Connectivity)

WHOOP; Boston (MA); On-site; USD 170,000 - 230,000; Full time

Job summary

WHOOP is seeking an experienced iOS Software Engineer to design and implement software that enables wearable sensors to communicate with the mobile platform. You will shape architecture, optimize connectivity, and ensure robust data flow across the ecosystem.

You’ll lead iOS components interfacing with hardware, collaborate across teams, and contribute to testing, releases, and code quality. This role is based in Boston, MA with relocation possible.

Qualifications

• 5+ years of professional iOS software engineering experience.
• Experience with Swift and iOS APIs, concurrency, and memory management.
• Hands-on experience with Combine and background task processing.

Responsibilities

• Architect, design, implement, and maintain iOS components interfacing with WHOOP hardware over BLE/Wi‑Fi.
• Evolve iOS architecture and protocols; ensure consistency across iOS/Android.
• Improve performance, power efficiency, and reliability of the connectivity software.

Skills

Swift

iOS APIs

Concurrency

Memory management

Combine

Background tasks

Code quality

Collaboration

AI tools

Education

B.S./M.S. in CS/EE

Tools

Firebase

Job description

At WHOOP, we're on a mission to unlock human performance. 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

RESPONSIBILITIES:

• Architect, design, implement, and maintain iOS application components that interface directly with WHOOP hardware over Bluetooth Low Energy (BLE), Wi-Fi, or other communication protocols.
• Define and evolve the iOS software architecture and communication protocols, maintain comprehensive documentation, and drive consistency across iOS and Android implementations.
• Drive continuous improvement of performance, power efficiency, and reliability in the WHOOP connectivity software layer including background and system-level iOS services to enable reliable device connectivity, synchronization, and data transfer.
• Champion strong software architectural principles for testable, scalable, maintainable software on your own team and across the organization.
• Own and maintain a clear, prioritized backlog focused on code health, technical debt reduction, and testability improvements.
• Raise the bar and champion higher engineering standards through prompt code review, increased test coverage, and improved design practices. Hold teammates accountable.
• Represent the Connectivity iOS team in cross-functional settings such as bug triage, product syncs, firmware coordination, and guild representation.
• 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

QUALIFICATIONS:

• BS or MS in Computer Science, Electrical Engineering, or a related technical field, or equivalent experience.
• 5+ 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 influencing other engineers in the application of 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, driving cross-functional problem solving, tradeoff definition, and optimization.
• 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 yourengineeringcareer 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 $170,000-$230,000. 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.