Signal-grade internal comms platform — event-based chat, voice/video calls, and FIDO2-style biometric auth. Built from scratch after diagnosing a fundamental architecture failure.

Multimodal AI platform — text, image, real-time voice. Solved a threading conflict between a 60fps Lottie animation and a live audio streaming pipeline.

Redeveloped Indonesia's largest Islamic super app from the ground up — modular architecture, offline-first, 40x growth in 2 years.

Solo end-to-end — link shortener & microsite creator. Architecture, UI, store submission, and reporting. No designer. No other mobile devs.

Fintech mobile app implementing Bank Indonesia's SNAP (National Open API Payment Standard), with runtime application self-protection and encryption.