SBBS iTrade
Production stock-trading app with fast transactions, margin accounts and market insight.
- Company
- Tititada × SBB Securities
- Role
- Mobile Developer · feature owner
- Period
- 10/2022 – 03/2025
- Platform
- iOS · Android (Flutter)
Overview
A dark-first trading terminal in your pocket. I owned customer-facing features end to end: eKYC and identity verification, normal and margin sub-accounts, trading workflows, and multiple transaction-authentication methods including biometrics.
What I did
- Owned features from user and business needs through implementation, release and production support.
- Developed eKYC and identity-verification flows with secure validation and error handling.
- Built normal and margin sub-account features and stock-trading workflows.
- Integrated multiple transaction-authentication methods, including biometric authentication.
- Built reusable mobile components with multilingual UI and Light/Dark mode.
Walkthrough
Screens and the decisions behind them.
Market overview
Market overview at a glance
Index cards, advance/decline ratio bar, liquidity comparison and top movers are stacked in the order a trader scans them each morning. Red and green carry all the meaning, so the rest of the UI stays near-monochrome.
Candlestick chart and order book
A custom candlestick chart with volume, support/resistance guides and a live last-price tag, followed by market depth with proportional bid/ask bars. Buy and Sell are always one thumb away.
Financial analysis, from scratch
Grouped bar charts for balance sheet and horizontal bars for key metrics, with legends and value rows aligned to each year. All chart components were built in Flutter without a charting library.
Price board that stays readable
Exchange filters, sortable columns and large change pills make a dense board usable on a phone, including in bright light.
All screens
Market overview
Candlestick + market depth
Financial analysis charts
Price board
Next project
BPM