Senior Mobile Developer

About the role

Join Nanit as the founding mobile engineer on a new Growth team, driving the full customer funnel from discovery to referral. You will work in a hybrid setting, collaborating across time zones and building high‑impact features for millions of families.

Key responsibilities

• Design, develop, and ship end‑to‑end iOS and Android features such as paywalls, onboarding, subscription flows, in‑app messaging, and referral mechanics.
• Collaborate with backend, product, design, and QA teams at every layer of the client stack.
• Implement client‑side measurement tools including feature flags, experiment assignment, and event instrumentation.
• Conduct code reviews, evaluate implementations, and provide feedback to raise quality standards.
• Work with Kotlin Multiplatform and Compose for iOS, expanding expertise in cross‑platform development.

Required profile

• 5+ years of production mobile app experience on both iOS and Android.
• Strong proficiency in Kotlin and Swift.
• Hands‑on experience with Jetpack Compose and/or SwiftUI.
• Proven track record of owning projects end‑to‑end and shipping them.
• Solid understanding of OOP, concurrency, and clean architecture.
• Commitment to UX, testing, and code quality.
• Kotlin Multiplatform experience is a plus.

Required skills

• Kotlin
• Swift
• Jetpack Compose
• SwiftUI
• Kotlin Multiplatform
• iOS development
• Android development

What we offer

• Hybrid schedule with three days per week in the NYC office.
• Remote work from home month in August.
• Flexible PTO and paid parental leave.
• Equity options and employee discounts on Nanit products.
• Work‑from‑home stipend and monthly team events.
• Equal‑opportunity workplace.