Senior iOS Engineer

Who you are

• 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)
• Interested in the role, but don’t meet every qualification? We encourage you to still apply!

What the job involves

• 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
• 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

Benefits

• Flexible Vacation: WHOOP has a flexible vacation policy that allows you to unwind, laptop-free, when you need it most.
• Focus on Family: We offer 18 weeks paid parental leave, plus an additional 2 weeks to gradually return to work.
• Get Invested: In addition to a competitive base salary and 401k, you're eligible to receive stock options to share in the future of WHOOP.
• WHOOP +1: Everyone on the team gets a complimentary WHOOP membership—plus another membership to share with a loved one.
• Health Matters: Our competitive benefits package covers medical, dental, and vision, in addition to mental health services, life and disability insurance, and more.
• Find Your Fit: Full-time employees get $500 a year to spend on wellness in whatever way they see fit, from fitness classes and memberships, to recovery services.
• It Pays to Sleep: Our Sleep Performance Program incentivizes employees to get more sleep. Log an average sleep performance of 85% or higher for the month and get a $100 bonus.
• Location, Location, Location: You can’t beat the views from the rooftop of One Kenmore Square. Feel inspired daily as you work, enjoy free snacks and coffee, and collaborate in the heart of Boston.