Joined the mobile team across multiple products in parallel. Restructured and stabilized Wizpr's architecture — event-based architecture, FIDO2-style biometric auth, custom offline-first chat SDK, and native CallKit voice/video. Solved critical audio streaming issues in Nisa AI (real-time speech-to-speech). Established AI-assisted development standards and workflows.

Solo mobile developer — no designer, no other mobile engineers. Full ownership from architecture to Play Store. Chose GetX and Melos deliberately for a solo, speed-first context. Shipped to 5K+ downloads on Android.

Led the full redevelopment of NU Online SuperApp — from monolith to modular, offline-first architecture. Launched v2 on October 22, 2021. 40K → 1.6M+ users in 2 years 3 months. Built the prayer time engine (extended Adhan with Falakiyah NU method), the Islamic inheritance calculator, Page Mode Quran (11MB vs ~100MB+ image-based), and an SSO system serving 5 web services.

Fintech mobile app for iOS and Android. Implemented Bank Indonesia's SNAP (National Open API Payment Standard). Added runtime application self-protection and encryption layers. Concurrent with NU Online role.

Developed RumahKitab — a course-based learning app for the Ministry of Religious Affairs. Led a 2-person team. Delivered in 2 months against an original 4-month estimate.

Started my professional career teaching — React Native for mobile, Node.js for backend — to bootcamp students. Built an internal web application for bootcamp automation. Daily code reviews, hands-on guidance, industry best practices.