Zypto/
An all-in-one blockchain finance platform — multichain DeFi wallet, crypto cards, mobile top-ups, and business payment gateways. Built over multiple phases as part of the Zypto product team.
Browse the project/
Swipe through the shipped surfaces — one screen at a time.
A super-app for living on crypto/
Zypto packages wallet, swaps, cards, payments, and mobile top-ups into one product so end-users can grow, manage and spend their crypto without leaving the app.
I joined the team to help take the multichain wallet stack and payment surfaces from prototype to a production-grade product. Day to day that meant owning end-to-end features across the Node.js backend and the Vue / React Native frontends — payment gateways, KYC flows, crypto card issuing, mobile top-ups, and the integrations gluing them together.
The challenge wasn't "crypto" — the challenge was treating crypto like real infrastructure: signed releases, observability, idempotent payment flows, retry semantics that survive a bad RPC, and onboarding that doesn't lose a non-crypto user at step two.
The screenshots below are taken straight from the shipped product — Google Play, web, and app surfaces.
All-in-one crypto super-app/
One install for buying, swapping, holding, and spending crypto. Mobile-first, with cold-wallet pairing via the Vault Key Card for self-custody users who don't want to give up control.
- iOS + Android, single codebase shared with web surfaces
- Mobile-first hardware wallet pairing (Vault Key Card)
- Universal deep-linking into wallet, swap, and card flows
Buy crypto in one screen — 130+ payment methods/
Card, Apple Pay, Google Pay, bank transfer, local rails — the buy flow is one screen for an audience that's 90% non-crypto-native. Swap aggregation lives behind the same surface, routing 24K+ assets across chains.
- Single-screen buy flow with 100+ payment methods
- Aggregated cross-chain swaps across 24K+ assets
- Idempotent payment intents, retry-safe state machine
Top-up any phone, anywhere — paid in crypto/
A real-world utility surface that proves the wallet's value to non-crypto users: recharge prepaid phones, buy data plans, or send credit abroad — paid with Bitcoin, USDC, Stellar, Solana, Shib, Dash, and 100+ more.
- 170+ countries, hundreds of carriers
- Mobile TopUps · Data Bundles · Networks · Pay With Crypto tabs
- One ledger, multiple settlement currencies
Cross-chain plumbing that actually settles/
Wallet, swaps, on-ramp, off-ramp, cards, top-ups — all settle against the same accounting layer. Cross-chain bridges and payment gateways were the part that had to never get out of sync.
- Reconciliation jobs across chains and fiat rails
- Webhook-driven payment gateway for business partners
- KYC-tiered card issuing (fast track / soft KYC) per market
Virtual cards and a hard wallet that fits in a card slot/
Reloadable and single-load virtual Visa cards spend the wallet's balance worldwide. The Vault Key Card pairs to the phone over NFC for split-key signing — a mobile-first cold-storage option that doesn't require a separate device.
- Reloadable Visa — high limit, low fees, fast KYC, 24-hour issue
- Single-Load Visa — soft KYC, issued in minutes
- Vault Key Card NFC cold storage with tap-to-sign
From login to live payments/
A walk through the shipped product surfaces — sign-in, app store presence, in-product UI, and brand pages.
$ZYPTO Foundation/
The community-and-governance arm of the ecosystem: rewards, the $ZYPTO token surface, and tools that make crypto easier to spend, manage and earn. Same wallet and payment plumbing as the main app — packaged for a token-holder audience and shipped as its own marketing & docs site.
I built out the Foundation's public site end-to-end: the dark electric-green brand, the Ecosystem grid, token contract address page, White Paper / Lite Paper, Funding breakdown, News Hub with embedded social feeds, and the FAQ — all under the Zypto.foundation shell.
A full marketing & docs site for the token side of the house/
Production-grade Web3, without the duct tape/
If you're shipping a wallet, payment gateway, or DeFi product and want it to feel as boring-and-reliable as fintech infrastructure — I can help.