Whoop

iOS Engineer II (Client Platform)

Boston, Massachusetts, U.S.

On-site

$125,000 – $175,000 per year

TLDR

Contribute to a scalable design system while focusing on internationalization and enhancing the member experience through seamless mobile app integration.

RESPONSIBILITIES:

Design, build, and maintain scalable iOS features that integrate with WHOOP’s platform services and APIs.

Collaborate with backend, infrastructure, and product teams to ensure seamless integration between mobile apps and core platform systems.

Implement mobile architecture patterns (e.g., MVVM) and best practices to ensure reliability, maintainability, and scalability.

Contribute to developer enablement by improving shared libraries, frameworks, and tooling for the iOS codebase.

Monitor app performance, diagnose issues, and optimize for responsiveness and efficiency.

Write well-tested, secure code and participate in code reviews to uphold high engineering standards.

Document technical decisions, features, and architecture to support knowledge sharing and team growth.

QUALIFICATIONS:

2–4 years of professional iOS development experience.

Proficiency with Swift and iOS frameworks such as SwiftUI and UIKit.

Strong knowledge of iOS app structure, lifecycle, concurrency, and memory management.

Experience integrating with RESTful APIs and backend services.

Experience working with atomic design principles and reusable component design

Familiarity with modern mobile architecture and design patterns (e.g., MVVM, modular design).

Experience with version control (Git) and productivity tools (Jira, Confluence, GitHub).

Product-minded engineer with empathy for the member experience.

BONUS QUALIFICATIONS:

Prior experience working on shared libraries, SDKs, or mobile platform tooling that enable other teams.

Knowledge of and experience working with mobile Design Systems on shared mobile infrastructure teams

Exposure to design tokens, managing tokens for color modes and multiple themes

Experience with infrastructure concepts such as CI/CD pipelines, mobile build systems (Fastlane, Firebase), or dependency managers (SPM, CocoaPods).

Familiarity with distributed backend systems and mobile developer enablement tooling.

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.

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Whoop

Whoop builds a performance optimization platform that helps individuals understand their bodies and health through advanced wearable technology. Targeted at fitness enthusiasts and health-conscious individuals, this startup stands out by focusing on personalized metrics and insights that drive improved performance and longevity.

Founded: Founded 2007
Employees: 51-200 employees
Industry: Internet Software & Services

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iOS Developer

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