iOS Engineer II (Connectivity)

WHOOP

iOS Engineer II (Connectivity)

Reposted 5 Hours Ago

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Boston MA USA

Hybrid

Junior

Fitness • Hardware • Healthtech • Sports • Wearables

Power your performance with 24/7 data

The Role

As an iOS Software Engineer II you'll build and maintain iOS app components for WHOOP hardware ensuring reliable connectivity and data transfer using protocols like BLE and Wi-Fi.

Summary Generated by Built In

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 to the cloud from people improving their health and wellness to the world’s greatest sports teams and athletes requiring 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 II on this team you’ll help build and maintain the software that enables WHOOP’s wearable sensors to communicate seamlessly with the mobile platform. You’ll contribute to connectivity experiences that are reliable efficient and largely invisible to the member — ensuring dependable data flow across our ecosystem.

RESPONSIBILITIES:

Build and maintain iOS application components that interface with WHOOP hardware over Bluetooth Low Energy (BLE) Wi-Fi and related communication protocols.

Contribute to background and system-level iOS services responsible for device connectivity synchronization and data transfer.

Write clean maintainable Swift code using modern iOS patterns and frameworks such as Combine and Swift concurrency.

Collaborate closely with firmware mobile and cloud engineers to investigate and resolve issues across distributed systems.

Improve the reliability performance and efficiency of the WHOOP connectivity experience.

Contribute to scalable testable and maintainable software architecture within the Connectivity team.

Participate in code reviews technical discussions testing and release processes for the iOS application.

Document features implementation details and operational knowledge using tools such as Jira Confluence and GitHub.

QUALIFICATIONS:

BS or MS in Computer Science Computer Engineering or a related technical field or equivalent practical experience.

2+ years of professional iOS software engineering experience.

Proficiency in Swift and familiarity with iOS system APIs concurrency and memory management.

Experience building and maintaining production-quality mobile applications.

Familiarity with asynchronous and reactive programming concepts (e.g. async/await Combine or similar).

Ability to debug and troubleshoot technical issues across mobile applications and connected systems.

Strong collaboration and communication skills with a willingness to learn from and work across disciplines.

Curiosity ownership and a growth mindset when approaching new technical challenges.

Nice to Have:

Experience working with Bluetooth Low Energy (BLE) Core Bluetooth or other device connectivity technologies.

Familiarity with networking concepts such as Wi-Fi background transfers or low-level communication protocols.

Experience working with hardware-integrated mobile applications or IoT systems.

Exposure to performance optimization battery efficiency or reliability improvements in mobile apps.

Interest in leveraging AI-assisted development tools to improve engineering productivity.

Skills Required

BS or MS in Computer Science Computer Engineering or related technical field or equivalent practical experience
2+ years of professional iOS software engineering experience
Proficiency in Swift and familiarity with iOS system APIs concurrency and memory management
Experience building and maintaining production-quality mobile applications
Familiarity with asynchronous and reactive programming concepts
Ability to debug and troubleshoot technical issues across mobile applications and connected systems
Strong collaboration and communication skills

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The Company

HQ: Boston MA

500 Employees

Year Founded: 2012

What We Do

At WHOOP we’re on a mission to unlock human performance. WHOOP empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives. Our wearable device and performance optimization platform has been adopted by many of the world's greatest athletes and consumers alike.

Why Work With Us

At WHOOP we’re focused on building an inclusive and equitable team with a strong sense of belonging for everyone—increasing representation in every way as our team grows. We believe that our differences are our source of strength—so much so it’s one of our core values. 