At Sacrena, I built and shipped the mobile application from scratch using Kotlin, Compose Multiplatform, and Clean Architecture, contributing shared functionality for Android and iOS.
I implemented camera-based identity and image verification workflows, from image capture and local preprocessing through detection, validation, and backend integration. I also used FaceNet, AWS Rekognition, and AWS Amplify Face Liveness for face analysis and verification.
At Sacrena, I developed reusable cross-platform components and integrated production features including authentication, image uploads, and payments. I used Ktor, Retrofit, and OkHttp for networking, with Kotlin Coroutines and Flow for asynchronous operations.
As a separate project, I developed a real-time chat application spanning Android and iOS clients, Spring Boot backend services, and a React administration panel. Earlier, as an Android Developer Intern at Payplex Solution, I developed Kotlin features, integrated REST APIs, and fixed application bugs under senior developer guidance.

