MOLTWellness
MOLT is a wellness app with its own in-app currency and subscription model. I built the systems that handle money and rewards — wallet, rewards, checkout, and billing — across a 9-service backend, plus contributed to fitness tracking and coach tools.
Case Study
My Role
Owned the money layer end to end — wallet, rewards, cart, checkout, and subscriptions — with additional contributions to fitness tracking, coach tools, and shared infrastructure across the backend and mobile app.
Wallet & Moltcoin Rewards — core ownership
Designed and built MOLT's in-app currency system end to end: streak rewards with an automated scheduler, referral rewards tied to first orders, meal-rating payouts, and coach wallet credits triggered on customer payment. Refactored the internal storage model from raw coin units to real currency value, with dynamic conversion-rate messaging layered on top.
Cart, Checkout & Payments
Built the coupon engine (creation, eligibility, validation, removal) and wired Moltcoin + coupon re-validation into every cart update and payment attempt.
Subscriptions
Dynamic pricing via a pricing-service integration, timezone-aware renewal logic, and bidirectional food-preference sync between cart and customer profile.
Beyond the money layer
Contributed a timezone-aware health overview API, an attendance module for coaches (session management, check-in, action center), meal/nutrition tracking screens in the mobile app, and a centralized logging system adopted across the whole backend.