WHOOP Jobs

iOS Engineer II (Connectivity)

WHOOP

iOS Engineer II (Connectivity)

Reposted 10 Days Ago

Easy Apply

Be an Early Applicant

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.

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 $125,000-$175,000. 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.

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

What the Team is Saying

WHOOP Compensation & Benefits Highlights

Wellbeing & Lifestyle Benefits — Wellness support includes a stipend and a complimentary WHOOP membership to use and gift, aligning perks with the company’s health focus. Feedback suggests these lifestyle benefits are a meaningful part of total rewards.
Healthcare Strength — Core coverage spans medical, dental, vision, mental health services, and life and disability insurance. This breadth indicates a comprehensive health safety net.
Equity Value & Accessibility — Total rewards commonly include stock options or equity participation, positioning ownership as part of compensation. Feedback suggests equity is viewed as a valuable component of the package.

Learn more about WHOOP's Compensation & Benefits →

WHOOP Insights

What's It Like to Work at WHOOP? WHOOP Culture & Values WHOOP Career Growth & Development What's the Work-Life Balance Like at WHOOP? WHOOP Leadership & Management WHOOP Company Growth, Stability & Outlook

View all jobs at WHOOP

View WHOOP Profile

Report Job

Am I A Good Fit?

beta

Get Personalized Job Insights.

Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

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. 