Senior Mobile Developer, Growth (US) at Nanit

Nanit is moving families beyond overwhelm by transforming how parents understand their baby's early years. We combine advanced AI, real-world data from billions of sleep hours, and clinical expertise to deliver the clarity and confidence every parent deserves. Trusted by over one million families and backed by $125M in funding, we're building an entirely new category: predictive parenting intelligence.

Here, your work directly impacts millions of families. Our team of scientists, engineers, and parents is small but mighty - we share a mission to make early childhood easier, healthier, and more connected. If you want to work on technology that genuinely matters, join us.

You'll be the founding mobile engineer on a new Growth team - a cross-functional squad owning the full customer funnel, from first consideration through purchase, subscription, engagement, and referral. You'll also be the first R&D engineer based at our US site, hybrid, with your manager and the rest of the team in a different time zone.

We're looking for someone who holds context, makes decisions, unblocks themselves, and knows when a question is worth asking rather than waiting on a sync.

What You'll Be Doing -

• Build and ship features end-to-end across iOS and Android - paywalls, onboarding, subscription flows, in-app messaging, referral mechanics - working at every layer of the client stack with backend, product, design, and QA

• Build the client side of how we measure: feature flags, experiment assignment, event instrumentation - every bet the team makes gets evaluated on data

• Review code, evaluate implementations, and give feedback that raises the bar

• Work with Kotlin Multiplatform and Compose for iOS - we're already building with it, and we'd love to talk if you have experience with KMP or want to grow into it

Who you are -

• 5+ years building production mobile apps, on both iOS and Android

• Strong Kotlin and Swift

• Production experience with Jetpack Compose and/or SwiftUI

• Experience owning a project end to end and shipping it

• Solid grounding in OOP, concurrency and clean architecture

• Real care about UX, testing and code quality

• Kotlin Multiplatform - an advantage

Why You’ll Love Working Here -

• Hybrid in-office schedule

• Remote work from home month in August

• Flexible PTO (we trust you to take the time you need)

• Equity options so you can share in our growth

• Paid parental leave for all new parents

• Employee discounts on Nanit products

• Work from home stipend

• Monthly team events

EEO, Salary and Location

This is a hybrid role that will require prospective candidates to be in our NYC office 3 days per week.

Salary Range: $160K to $200K base salary + equity and benefits. The base pay is one component of Nanit's total compensation package, which may also include access to healthcare benefits, a 401(k) plan, short-term and long-term disability coverage, and basic life insurance. Ultimately, in determining your pay, we'll consider your location, experience, and other job-related factors.

We are proud to be an equal-opportunity employer. We provide employment opportunities without regard to age, race, color, ancestry, national origin, religion, disability, sex, gender identity or expression, sexual orientation, veteran status, or any other protected class.