Sincere is looking for a Senior Mobile Developer to join our growing team. In this role, you will have the opportunity to build best-in-class apps for both Punchbowl and Timehop. This is an exciting time to join Sincere. Our customer base is shifting to mobile from the web at an unprecedented rate, we have record-breaking growth among our key metrics, and an award-winning platform that’s been featured in TechCrunch, CNNMoney, Entrepreneur, WSJ, and more.

The ideal candidate has 5+ years of native app development experience working on consumer apps (ideally, subscription-based). You believe that user interface details really matter. You care about creating structured and maintainable code, and you consider development your craft.

You have:

• Strong Android development experience with Kotlin & Java
• Expert Knowledge of Android SDK and Android UI components, including JetPack Compose
• Familiarity with Swift, UIKit, and SwiftUI
• Demonstrated experience working on active apps (50k+ daily active users)
• Experience with subscription feature integration & management on Google Play Billing or StoreKit
• Proven ability to write clean, testable, and performant code
• Advanced knowledge of design principles, user interfaces, and mobile standards
• Expertise with monitoring tools like Embrace and Firebase Performance
• Excellent understanding of RESTful web services
• Ability to work in a collaborative environment, participating in pull requests and code review

Bonus points if you have:

• App development experience with both Android & iOS
• Knowledge of the Google Play release process
• Experience with A/B testing frameworks & feature flags
• Strong understanding of CI/CD tools (Github Actions, Fastlane, Firebase, Gradle)
• Proficiency with dependency injection frameworks (Dagger/Hilt)
• Experience translating requirements into user stories, proactively leading product advancements

Do you want to work at a growing company that invests in its team more than the average employer? Sincere is a family of brands with heart. TThe Company is home to Punchbowl®, Lovebird®, Timehop®, and Memento®, and builds technology that brings you closer and helps show you care to the people who matter the most. With Sincere Foundation, we support organizations that address basic needs, and envision a future where everyone has the opportunity to celebrate, recognize milestones, and honor memories. We provide a fun, casual, and innovative environment where hard work is recognized and rewarded.

What We Offer:

• 100% Health, Dental & Vision coverage
• 401K Plan with Profit Share
• Annual bonus potential
• Health & Wellness stipends
• Paid time off plus 12 paid holidays & Summer Fridays
• Paid parental leave
• Childcare benefits (dependent care FSA)
• Flexibility to work from wherever you will be most effective
• In-person, all-expenses-paid Team Summits (2X a year)

PLEASE NOTE: Our team is primarily based in Greater Boston. We will consider applicants who reside anywhere within a 2 hour drive of the city. While this role is remote, we have occasional in-person meetings at the office (every 4-6 weeks typically).