HELLO, I'M SONG XEN HWA

I build mobile systems that
work in the real world

Flutter and Oracle APEX Developer creating production mobile apps, offline business workflows, admin portals and backend integrations.

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Selected work

FEATURED CASE STUDY

Retail CRM mobile ecosystem

A production Flutter platform spanning customer engagement, events, vouchers, rewards and targeted push notifications for multiple countries.

Flutter Oracle Firebase Cloud Functions Firestore PL/SQL
MY + BR

Multi-country
release

End-to-end

Designed, built
and shipped

02

Offline stock
operations

Barcode-driven stock take, transfer and receiving with SQLite persistence, transaction logs and resilient uploads.

Flutter SQLite REST API
03

Enterprise staff portal

Oracle APEX dashboards, workflows, authentication and reporting connected to business-critical SQL and PL/SQL systems.

Oracle APEX SQL PL/SQL
04

Fleet management
system

A role-based mobile platform for drivers and managers to coordinate trips, record delivered quantities, manage approvals and track operational progress

Flutter REST API Oracle PL/SQL

CURRENT STAGE

UI & workflow development

Experience

More than screens
and code.

I take products from requirements and architecture through development, deployment and preoduction support.
2024 - NOW
Mobile Application Developer
Flutter mobile and PWA development, Oracle APEX systems, Firebase services and application publishing
5 LIVE APPS
Production ownership
Independent delivery across IOS, Android, backend integrations, database workflows and ongoing support
NEXT
Technical leadership
Growing towards project ownership, stakeholder coordination and mentoring while staying hands on