Freelance Senior Mobile Engineer (Monetization) - BeReal

Department: BeReal

Location: Paris

Employment Type: FullTime

About BeReal

At BeReal, we are dedicated to authenticity in social media. By encouraging users to share unfiltered moments, we foster genuine connections and celebrate real life. We are now an international team of 70+ and have 40M+ monthly active users. Backed by Voodoo, our team is fully focused on scaling BeReal into an iconic social network used by hundreds of millions.

Role

We are looking for a talented Mobile Engineer to join our Monetization team, where you will focus on building and optimizing revenue-generating features while maintaining the authentic experience that makes BeReal special.

You will be responsible for:

• Designing, implementing, and maintaining scalable monetization features across Android & iOS (ads formats, sponsored content, premium features) in a fast-paced, high-impact environment.

• Collaborating with cross-functional teams (designers, product managers, data analysts, backend engineers, adOps team) to build innovative monetization solutions that respect user experience.

• Building the bridge between advertisers/partners and our users, ensuring monetization feels native and non-intrusive.

• Optimizing performance and stability of monetization features to ensure seamless integration with the core BeReal experience.

• Analyzing user behavior, A/B tests results, and business metrics to iterate on monetization strategies.

• Ensuring a high-quality, authentic user experience through thoughtful technical solutions.

• Contributing to and upholding best practices in code quality, design, and development processes.

• Driving implementation across iOS and iOSAndroid through AI coding tools, from defining the technical approach and guiding code generation to reviewing, testing, and shipping high-quality features.

• Continuously improving our native mobile stacks: Swift and SwiftUI on iOS, Kotlin and Jetpack Compose on Android.

• Contributing to best practices in code quality, architecture, testing, and AI-assisted development, with full ownership of the code you ship.

Profile

• 5+ years of experience in iOS or Android development, with working knowledge of both Swift/SwiftUI and Kotlin/Jetpack Compose.

• Solid knowledge of Swift, SwiftUI and UIKit, as well as Kotlin and Jetpack Compose.

• Familiarity with Clean Architecture principles and separation of concerns.

• Experience building monetization features, ads products, or consumer-facing products is a strong plus.

• Ability to understand and debug large, complex codebases.

• Product mindset with a strong passion for clean interfaces, smooth animations, and interactions.

• Interest for analytics and data-first mindset to measure impact and iterate.

• Strong understanding of user experience and ability to balance business goals with product quality.

• Youre highly driven, autonomous, and results oriented.

• Be fluent in English (French is a plus).

Our Stack

Use the following predefined list:

• iOS: Swift, Combine, SwiftUI, SPM, Swift Concurrency, MVVM

• Ops: Github.

• Android: Kotlin, Compose, Coroutines, Room, gRPC.

• Backend: Go, Node.js (NestJS, Nx, Typescript).

• Database: Spanner, PostgreSQL, Redis.

• Infrastructure: GCP, GKE, Firebase.

• Data: Amplitude, Tableau.

Benefits

• Competitive salary based on experience

• Swile Lunch voucher

• Gymlib (100% covered by Voodoo)

• Premium healthcare coverage with SideCare, 100% covered for you and your family

• Wellness activities in our Paris office

• Remote days on Fridays