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Overflow

A multi-channel nonprofit giving platform that helps organizations accept and manage donations across cash, stock, crypto, donor-advised funds, pledges, recurring giving, roundups, and offline gifts.

Overview

Overflow combines donor-facing donation flows, nonprofit admin tooling, payment processing, reporting, reconciliation, and third-party integrations into a unified giving infrastructure platform.

I contribute across the TypeScript monorepo, spanning NestJS backend modules, public API schemas, domain events, queue-backed jobs, React/Next dashboard workflows, donor-facing experiences, shared types, design system components, tests, linting, and developer tooling.

Impact

  • Contributed across backend services, frontend apps, shared types, design system components, tests, and tooling.
  • Expanded Overflow public API capabilities across donor profiles, payment methods, contributions, campaigns, subscriptions, one-time charges, response semantics, filters, and typed metadata.
  • Helped deliver location-aware giving, reporting, exports, dashboard access control, and reusable permission abstractions for multi-location nonprofits.
  • Built and refined nonprofit dashboard workflows for locations, funds, subfunds, API keys, user management, settings, giving links, pledge campaigns, gift entry, and reconciliation.
  • Strengthened backend architecture with CQRS handlers, domain events, saga error handling, queue-backed jobs, repository filtering, test coverage, and type-safety improvements.

Dashboard Product Screens

Nonprofit dashboard home screen
Dashboard Home
Nonprofit dashboard funds screen
Funds
Nonprofit dashboard fund details screen
Fund Details
Nonprofit dashboard locations screen
Locations
Nonprofit dashboard create location screen
Create Location
Nonprofit dashboard admins screen
Admins
Nonprofit dashboard invite admins screen
Invite Admins

Giving Flow Product Screens

Overflow giving flow start screen
Mobile Start
Overflow giving flow locations and funds screen
Mobile Locations & Funds
Overflow giving flow payment methods screen
Mobile Payment Methods
Overflow giving flow success screen
Mobile Success

Tech & Constraints

  • TypeScript
  • NestJS
  • React / Next.js
  • CQRS
  • Domain events
  • Job queues
  • OpenAPI
  • AntD
  • Biome

The key engineering challenge was making complex nonprofit financial workflows safer and more scalable across product surfaces: donor checkout, admin tools, public APIs, permissions, reports, exports, reconciliation, third-party sync, and background jobs.

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