Challenge
Needed a live exchange surface: send/get, pairs, fees, and confirmation — not a marketing landing pretending to be a product.
Fintech / crypto · 2026
Swisscrypto — crypto exchange web app
Swisscrypto Exchange
What’s included
Designed and built the web application around swap flows: pair selection, rate, networks, and a durable data layer on Next.js, TypeScript, and PostgreSQL.
Outcome
Live product at swisscrypto.exchange — swap widget, pairs, and production deploy.
Challenge
Make a high-trust flow (money in, money out) readable, fast, and honest about rate changes.
Review
- Mapped send → quote → confirm → destination wallet
- Listed edge states: network mismatch, rate change, failed tx
- Defined what must be visible before the user hits Exchange
Plan
- Product UI first: widget is the homepage, not a hero slogan
- Typed app + PostgreSQL for quotes, pairs, and history
- Show fees and “rate may change” before commit
Ease of use
- One card: Sent / Get / networks / Exchange
- Clear confirmation and failure copy
- FAQ that answers KYC, timing, and wallets without legal fog
Look & feel
- Dark fintech surface, orange as the only action color
- Dense widget, spare marketing chrome
Build
- Next.js app structure and production deploy
- TypeScript end to end
- PostgreSQL for product data
- Exchange widget and pair catalog
Technologies
- Next.js
- TypeScript
- PostgreSQL