Ray Yacub

I’m a Senior Android Engineer with 10+ years building and modernizing large-scale mobile platforms across hospitality, automotive, healthcare, and aviation. I specialize in Kotlin, Jetpack Compose, and scalable Android architecture, with a focus on delivering business-critical apps used by millions of users.

I’ve served as a technical lead for platform modernization initiatives, guiding architecture decisions and coordinating end-to-end delivery across engineering, product, design, and QA. At Hilton Worldwide, I led modernization and modularization efforts for Digital Key and Accounts domains, improving scalability and release reliability while contributing to measurable engagement gains.

I drive technical direction by establishing engineering standards, mentoring developers, and partnering cross-functionally to ship performant, accessible, and reliable experiences. I also integrated and operationalized analytics and rollout tooling (including feature-flagged strategies) to enable real-time feedback loops that inform product and roadmap priorities.

Earlier, I delivered production features across large-scale mobile platforms, migrating legacy codebases toward Kotlin and reactive architectures to improve maintainability and stability. I’ve also worked across performance optimization and secure service integration, and I’m consistently focused on modular design, CI/CD excellence, and engineering practices like TDD, pair programming, and structured code reviews.