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Not portfolio pieces. Real systems that processed billions in transactions, tracked 60,000 UN vehicles, and secured government data at scale.
Petronas Fuel eCoupon System
Role: System Designer & Technical PM
Designed the Petronas enterprise Fuel eCoupon platform: a prepaid coupon system for corporate clients. Enterprises order fuel coupons online, print watermarked branded vouchers, and distribute them to employees. Station agents accept coupons, submit them through the claim portal to receive credit, and use that credit balance to order bulk fuel from Petronas. A closed-loop, fraud-resistant prepayment system.
Key Outcomes
- Corporate prepaid fuel ordering portal with bulk coupon management
- Watermarked, serialised coupon generation with tamper-evident print design
- Multi-station claim portal for physical coupon submission and validation
- Agent credit system: redeemed coupons convert to bulk fuel order balance
- Fraud prevention dashboard with full coupon lifecycle audit trail
Fuel eCoupon System Architecture
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