Vladyslav Lubenets

Developed Android and Kotlin Multiplatform components for physical security and access control, including BLE and NFC/HCE communication. Built backend services with Ktor and Spring Boot, exposing REST and gRPC APIs backed by PostgreSQL, and worked on authentication, licensing and subscription workflows. Extended integrations with enterprise access control and video security platforms, collaborating with customers on requirements, technical issues and estimates. Designed AWS-based deployment automation and Kubernetes/Elasticsearch logging to speed up releases and troubleshoot distributed production issues.

Led Android development for banking, trading, marketplace and B2B products, making architecture decisions and coordinating feature planning and delivery across teams up to 12 people. Delivered Kotlin and Java applications, performed code reviews and mentored developers while collaborating with international customers, QA, design and backend teams. Worked with coroutines, RxJava, Retrofit, dependency injection, Firebase and Gradle across multiple production applications.

Built Android applications with custom UI components and reusable modules, and contributed to cross-platform technical discussions. Created custom views and implemented animations across products and devices. Contributed to iOS development by writing and maintaining Objective-C code.

Developed consumer Android applications with custom UI elements and analytics features. Implemented in-app purchase functionality and built SQLite-backed functionality for app data handling. Delivered production code supporting consumer-facing app capabilities.

Developed backend components and Android banking/payment applications, including Privat24 and LiqPay. Worked with concurrency, databases, messaging and system integrations to support payment and notification workflows. Contributed to architecture improvements and refactoring of services running in high-load scenarios.