Senior iOS Engineer - Freelance or Permanent

Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo is the #3 mobile publisher worldwide in terms of downloads after Google and Meta. Our portfolio includes chart-topping games like Mob Control and Block Jam, alongside popular apps such as BeReal and Wizz.

This position is based in Paris with a 2 months contract to start with. We are also open to permanent contracts.

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 30+ 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.

We are looking for a talented Senior iOS Engineer who will be fully focused on improving the ads experience within BeReal.

The goals are to maximize ad revenues while ensuring that we provide the best experience to our users in terms of ad exposure.

• Iterating on ad rendering and ad frequency.
• Integrating SDK of ad networks and other ad partners to make sure we have the best supply.
• Implement, deploy, and maintain highly-scalable iOS features for a social app used by millions of users.
• Analyze and understand user needs.
• Design and challenge new features in partnership with designers and data analysts.
• Assess the technical, user, and business impact of features you ship.
• Contribute to best practices in the tech team and especially in the mobile team.
• Contribute to innovation in the iOS stack (Swift, SwiftUI).

Our stack

• iOS: Swift, Combine, SwiftUI, Cocoapods.
• Ops: Github, CircleCI.
• Android: Compose.
• Backend: Node.js, Fastify, Socket.io, Firebase.
• Database: MongoDB, Redis.
• Infrastructure: Cloud Run, Cloud functions, Bucket, S3, CloudFront.
• Data: Amplitude, Tableau.

Profile

• Excellent iOS programming skills (5+ years experience).
• Strong knowledge in Swift, UIKit, and SwiftUI.
• SwiftUI concrete projects and proven experience.
• iOS architecture app skills.
• Product mindset with a strong passion for clean interfaces, smooth animations, and interactions.
• Interest for analytics and data-first mindset.
• You’re highly driven, autonomous, and results oriented.
• Be fluent in French and English