All work
Case 04
Partial Payment / Partial Redeem Flow
Structured payment and redemption logic across coupon, credit card, e-wallet, partial payment, and business-rule-based checkout scenarios.
Payment UXPartial PaymentPartial RedeemCouponCredit CardE-walletBusiness Logic
- Structured complex payment combinations into clearer behavior
- A more practical direction for implementation
- Product type
- Combined payment & partial redemption logic
- Platform
- Web (mobile + desktop)
- Timeline
- ~2-month delivery within the 2023–2025 workstream
- Role
- UIUX Lead, payment UX, business logic mapping
- Team
- Designer, PM, sales, payment + frontend engineers
- Tools
- Figma, Flow diagrams
Why this project existed
Complex payment logic where users combine payment methods, coupons, wallet behavior, and partial redemption.
What I owned
- UIUX Lead
- Payment UX
- Business Logic Mapping
- Flow Chart Design
- Design System Thinking
- Stakeholder Collaboration
What made it hard
- Multiple payment methods combined in one checkout
- Partial payment and partial redeem need clear rules
- Coupon, credit card, and e-wallet have to work together
- Users need to understand status and remaining balance
- Business logic had to stay clear for both design and engineering
How it came together
- 1Clarified payment and redeem rules
- 2Mapped business logic and method combinations
- 3Designed user flows and flow charts
- 4Designed checkout and error states
- 5Collaborated with UIUX and sales across regions
- 6Produced structured design documentation
The thinking behind it
Made invisible payment logic visible enough to understand, without overwhelming users with internal complexity.
Selected views
Abstract representations — original mockups, not client screenshots.
What changed
- Structured complex payment combinations into clearer behavior
- A more practical direction for implementation
What I took away
Strengthened my ability to translate business and payment rules into usable product flows.