Mobile App
Japp
Realtime cross-platform social app with authenticated routing
Built a TypeScript Expo Router application with authenticated route gating, Firestore subscriptions, and device-feature integration.
Problem
Realtime mobile experiences need authenticated routing, consistent UI state, and resilient subscriptions to cloud-backed data.
Outcome
Demonstrates practical knowledge of realtime systems, mobile UX continuity, cloud-backed state, and scalable app structure.
Approach and Solution
Built a TypeScript Expo Router app with authenticated route gating, Firestore onSnapshot-based updates, and social/profile data flows.
Needed profile-aware route control, realtime updates, device integrations, and a maintainable cross-platform structure.
Architecture Notes
Expo Router structure with auth-aware layout decisions, Firestore realtime subscriptions, Firebase integrations, and device features including camera, QR, and fingerprint-related workflows.
Security: Auth gating and state synchronization patterns help protect route access and reduce inconsistent UI behavior.
Performance: Structured for continuity across changing auth/profile states rather than static screen flows.
Lessons and Next Improvements
Realtime apps benefit from strong routing and state strategy early because complexity rises quickly with auth and subscriptions.
Add performance monitoring, clearer product narrative, and more public-facing proof of the use case solved.
Outcome Metrics and Signals
realtime_update_latency
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ms · session · firestore metrics
media_upload_success_rate
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% · 30d · app events
Media and Visual Proof
Related Build Notes
Career Journey
From Information Systems student to product-minded engineer
My growth came from combining formal Information Systems study with freelance shipping, system design, and practical automation work.
Continue through the journey with timeline context or view the full resume page.