Matthew Usdin

Key Contributions in the Activation & Acquisition Squad: ✓ Designed and implemented user activation flows, including the post-registration journey and dematerialized in-store purchase flow ✓ Developed the new Statistics page, the first screen fully migrated to MVVM with SwiftUI ✓ Led progressive migration from Clean VIP UIKit and Kotlin Multiplatform (KMM) to modern SwiftUI MVVM architecture ✓ Contributed to the redesign of the Home page, including front-end migration and dynamic personalization through an external tool ✓ Implemented robust analytics integrations (PianoAnalytics, Contentsquare, Firebase, RevenueCat, Adjust) ✓ Maintained high code quality with unit tests, clean practices, and active participation in code reviews and Agile ceremonies Accomplishments: ✓ Achieved and maintained a crash-free rate consistently above 99.9% ✓ Successfully delivered new lottery games (e.g., Eurodreams) and user features impacting millions of players ✓ Enhanced code maintainability and long-term scalability through architectural modernization ✓ Strengthened product insights by enabling advanced tracking and analytics

Tailor Fund provides an innovative investment solution to banks and wealth managers to enable their clients to invest in automated and customized portfolios that match their investment goals and their social and environmental values. As a co-founder and Chief Product Officer, I was tasked with overseeing the design and development of the product while gathering valuable feedback from users. Key Tasks: ✓ Technical Development: Created both a web application using ReactJS and an iOS app using Swift from scratch. ✓ Product Design: Designed mockups using Figma and established the product's visual identity from the ground up. ✓ User Engagement: Engaged with potential clients through contacts, conducted interviews with over ten individuals to demo the app and gain insights into customer needs and challenges. Accomplishments: ✓ Successfully demonstrated a front-end application (for both iOS and web) that allowed users to create fully customized index tracking portfolios with just a few clicks. ✓ Earned AMF Certification. ✓ Chosen to join a prominent FinTech incubator program at Le Swave (Paris&Co).

Key Contributions as Lead iOS Developer in Search Team: ✓ Designed and developed new features for a user flow used by millions of monthly active users globally ✓ Ensured app stability through debugging and maintenance ✓ Collaborated closely with product and design teams to implement new features ✓ Defined and executed project roadmap, including task setting and time estimation ✓ Reviewed pull requests, participated in guild and technical meetings, and mentored junior developers ✓ Contributed to human resource management, including participation in candidate selection and performance evaluations Accomplishments: ✓ Implement key features to boost conversion rate through A/B testing ✓ Ensured >99.5% crash-free sessions through stability and robustness enhancements ✓ Adopted new MVVM architecture compatible with SwiftUI ✓ Awarded Hackathon victory: gathered and led a full-stack team to add a social feature to the app

OrangeBank is the first 100% mobile bank in France. I joined the team composed by 6 developers in the end of 2018. Responsibilities: ✓ Developing new features to provide best experience: removing existing hybrid code to native (Swift) ✓ Working on creating bug-less application, using unit and UI tests ✓ Improvements of application according to crashlytics crash reports ✓ Ensuring secure connections with SSL Pinning (preveting MITM) ✓ Estimating User stories in Planning Poker ✓ Working closely with UI/UX team to offer the best user experience (Animations, Dark mode...) ✓ Approving teammates pull requests Achievements: ✓ Implementing Clean VIP Architecture ✓ Understanding and implementation of unit tests (improving significantly code coverage up to 30%) ✓ Understanding and implementation of UI test for most important functions of application ✓ Improving the App Store rating ( 4.5⭐ in November 2020 vs 3.1⭐ in December 2018) ✓ Significant improvements of application stability (99,6 % crashfree sessions in November 2020 vs 92,6% December 2018) Tools : Clean Architecture VIP • Swift 5+ • XCode • XCTest • TDD • XCUITest • Bitbucket • SourceTree • Charles Proxy • Postman • Sonar • CocoaPods (Lottie, Alamofire, Firebase, Reachability, SwiftMessages...)• Jira • Confluence

Internal project: iOS Developer, BackEnd Developer & Product Owner Improve visibilities for employees for the Digital Agency. Responsibilities: ✓ Developing an iOS app from scratch to access visibility: members, their skills and availability ✓ Developing the back-end with LAMP Server (PHP, MySQL) ✓ As Technical Product Owner I was in charge of completing the backlogs ✓ Welcoming new members in the scrum team Achievements: ✓ Uploading an app on TestFlight ✓ Creating and leading a scrum team of 4 members

Social network for user-generated contents on top of the physical environment using AR and image recognition. Participated to international startups summit: TechCrunch Disrupt (New York), 4YFN (Barcelona), Wolves Summit (Gdansk) and Hello Tomorrow (Paris) Responsibilities: ✓ Creating SAS company and managing budget ✓ Developing iOS and Android (Swift, Objective-C, Java) apps from scratch using Vuforia for AR and Open CV for image recognition ✓ Maintaining back-end development and adding new features (PHP, MySQL) ✓ UX: easy login/signing up (Facebook/Google login), tracking events (Firebase), reporting users' feedback, boosting growth with Gifs sharing in App (MegaCool SDK), offline mode (CoreData) ✓ Uploading app on AppStore and PlayStore and submitting new updates (Fastlane and manually) ✓ Promoting the app on Social Medias (Facebook, Instagram) Achievements: ✓ 10.000+ downloads ✓ Top 100 social app Tools : XCode 7+ • Swift 1.2+ • Objective-C • Android Studio 2+ • Java • Open CV • PHPStorm • Github • PhyMyAdmin • AppStore Connect • Cocoapods (Lottie, Alamofire, Facebook SDK, Google Maps, Open CV, Vuforia, Megacool, Crashlytics)