Java, Data Structures And Algorithms, Kotlin, Android Application Development, Payments NFC contactless payments, Server-side API design and integration, Digital credentials, Large-scale application design and architecture

Design Patterns, Java, Networking, Accessibility, Data structures, Multithreading, Kotlin, Automated Testing, Algorithms, Gradle, Third-party SDKs, versioning, Release pipelines, Clean coding practices

Java, Unit Testing, Continuous Integration, test automation, Kotlin, Programming Skills, Android, Build Automation, Jenkins, Gradle, native development, OO Design

Performance Tuning, secure data handling, native Android development