Mercurylist
An event signup tool that lets organizers collect signups, schedule time slots, accept payments, and send automatic reminders — all in one place.
The Challenge
Build a SaaS marketplace that works seamlessly across web and mobile, supports real-time updates via GraphQL subscriptions, and handles multi-party payments through Stripe Connect — all sharing a single backend.
Our Approach
Unified API Layer
A single GraphQL API serves both the Next.js web app and React Native mobile app, ensuring consistent data and business logic across platforms without code duplication.
Stripe Connect Integration
Multi-party payment flows with automatic splitting, connected account onboarding, and real-time payout tracking — all abstracted behind a clean service layer.
Cross-Platform Delivery
Web and mobile shipped simultaneously with shared types, shared API queries, and platform-specific UI components that feel native on each device.
Technical Stack
Results
- Web and mobile apps shipped from single codebase
- Real-time GraphQL subscriptions for live marketplace updates
- Stripe Connect payments processing in production
- 33 active users in initial launch cohort
- Scalable architecture ready for marketplace growth
Building a marketplace?
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