Projects

Taco Bell app icon

Led the homepage, loyalty, and profile experience in Taco Bell's relaunched app

Taco Bell

Product Manager · Loyalty & rewards

The Taco Bell app's rewards dashboard shown on a phone

Taco Bell relaunched its mobile app in 2026, replacing an experience that was more than 10 years old. I led product for everything outside of ordering: the homepage, loyalty, profile, and kiosk.

  • Problem The old app worked for ordering, but it was dated and hard to navigate, and gave customers little reason to open it between orders.
  • What I shipped A centralized loyalty hub where customers track challenges and redeem rewards, and a redesigned homepage that puts live campaigns, like Tuesday Drops and the Olivia collab, front and center.
  • Impact Reached #4 in Food & Drink on the App Store (Oct 2026).
Haru, a pixel-art white cat with blue eyes and a yellow bell collar

Pet care app with a tamagotchi-style virtual cat twin

Haru

Product Manager · Pet care app with a tamagotchi-style virtual cat twin

Haru, a pixel-art white cat with blue eyes and a yellow bell collar

A pet care app that helps pet owners keep up with their daily and recurring tasks through a virtual twin of their pet (in tamagotchi style)!

  • Problem As a new cat owner, I struggled to remember the ongoing tasks for taking care of my cat, Haru, especially the ones that don’t happen on a regular schedule, like cleaning the water fountain or deworming.
  • Outcome An iOS app built in Swift that helps you take care of your cat through a virtual copy of them.
  • Designed and built solo in SwiftUI, with Claude Code as my engineering partner.
  • Haru reacts to how you’re doing: he celebrates when everything’s caught up, and there are streaks and a calendar to keep you going.
A grocery point-of-sale setup with a touchscreen register, receipt printer, and two card readers

Payments for a new checkout system built for 2,700+ grocery stores, from the register to the gas pump

Grocery Payments

Product Manager · Payments

A grocery point-of-sale setup with a touchscreen register, receipt printer, and two card readers

A national grocery retailer was replacing the checkout system behind every register in its stores, which handles $140B+ in sales a year. I was the PM for payments, leading 7 engineers and 3 QA testers.

  • Problem Every way a shopper pays had to work on the new system, from cash and debit to government benefits, health plan cards, and fuel. Many come with their own rules. A WIC card, for example, can only pay for approved items, so the register has to know what each card covers and charge the rest to another payment.
  • What I shipped Payments at the register and the gas pump, including three new payment types built from scratch: health plan benefit cards, WIC (a government nutrition program for families), and fuel payments at the pump, kiosk, and with company fleet cards.
  • Impact Health plan cards went live in under 3 months for 4M+ cardholders, with no disruption to their benefits. We earned WIC certification in Kansas, so about 49,000 people a month can now use WIC at 63 stores. Fuel payments were built and tested for 1,700+ fuel centers.

Due to NDA restrictions, I can’t share details publicly. If you’re curious about my experience, please email me at ericachungm@gmail.com.