Senior iOS Engineer (Core)

WHOOP

Senior iOS Engineer (Core)

Reposted 5 Hours Ago

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Boston MA USA

Hybrid

150K-215K Annually

Senior level

Fitness • Hardware • Healthtech • Sports • Wearables

Power your performance with 24/7 data

The Role

The Senior iOS Engineer will design and implement core iOS platform capabilities lead technical planning for initiatives mentor other engineers and ensure app reliability and performance.

Summary Generated by Built In

At WHOOP we’re on a mission to unlock human performance and healthspan. WHOOP empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives. Our wearable technology monitors vital physiological metrics to offer personalized insights that enhance fitness health and recovery.

As a Senior iOS Engineer on the Core team you will build the foundations that power the WHOOP iOS app—owning platform capabilities shared architecture and reliability/performance improvements that unlock faster delivery for product teams and a consistently great experience for members. You will lead technical planning for complex initiatives mentor other engineers and raise the bar for engineering excellence across the iOS stack.

RESPONSIBILITIES:

Lead the design and implementation of core iOS platform capabilities (for example app architecture navigation patterns shared UI components networking persistence and feature flagging)

Drive technical planning for initiatives including scoping and sequencing work identifying dependencies and risks and communicating tradeoffs and timelines to stakeholders

Deliver high-quality member-facing iOS features in Swift collaborating with cross-functional partners to ensure requirements are met and outcomes are measurable

Improve app reliability performance and maintainability through testing observability crash and performance monitoring and disciplined release practices

Establish and evolve shared engineering standards through code reviews documentation and architectural discussions influencing patterns used across iOS development

Mentor and support other engineers through pairing feedback and knowledge sharing helping grow individual capability and the overall health of the codebase

QUALIFICATIONS:

Significant experience building testing debugging and shipping native iOS applications in production environments

Strong proficiency with Swift and iOS frameworks (for example SwiftUI UIKit XCTest) and experience with modern architecture patterns (for example MVVM)

Experience leading technical planning and delivery for ambiguous cross-cutting iOS initiatives (for example modularization large refactors performance programs or reliability initiatives)

Strong foundation in iOS performance and reliability fundamentals (for example memory management profiling and concurrency with Swift Concurrency and/or GCD)

Experience integrating mobile apps with backend services and APIs (for example RESTful APIs authentication flows and resilient networking)

Familiarity with common iOS tooling and workflows (for example Xcode Git CI Fastlane Swift Package Manager CocoaPods)

Demonstrated ability to collaborate effectively across functions (for example Product Design QA Data and Backend Engineering) and communicate clearly with technical and non-technical audiences

Bonus: Experience building shared mobile foundations across platforms (for example collaborating closely with Android on patterns and releases) or contributing to backend services and APIs (for example Java)

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 $150000-$215000. 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

Significant experience building testing debugging and shipping native iOS applications in production environments
Strong proficiency with Swift and iOS frameworks (e.g. SwiftUI UIKit XCTest)
Experience leading technical planning and delivery for cross-cutting iOS initiatives
Strong foundation in iOS performance and reliability fundamentals
Experience integrating mobile apps with backend services and APIs
Familiarity with common iOS tooling and workflows (e.g. Xcode Git CI)
Demonstrated ability to collaborate effectively across functions
Bonus: Experience building shared mobile foundations across platforms

What the Team is Saying

WHOOP Compensation & Benefits Highlights

Parental & Family Support—Policies include 18 weeks of paid parental leave plus two additional weeks to support return-to-work. Feedback suggests this depth of leave is a standout element of the package.
Wellbeing & Lifestyle Benefits—Offerings span medical/dental/vision mental-health support a $500 wellness stipend daily meals onsite gym/recovery tools commuter benefits and free WHOOP memberships. These wellness-forward perks collectively signal strong everyday support for employees’ health and lifestyle.
Equity Value & Accessibility—Stock options are granted at hire and ownership is emphasized as part of total rewards. Feedback suggests this equity component is valued alongside cash compensation.

Learn more about WHOOP's Compensation & Benefits →

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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. 