Full-stack engineer & UX designer
Caitlyn
Carmabella Nayeli
I build production platforms end-to-end - from database architecture to native mobile apps to payment integrations.
Featured build
Solo development of a 181,000-line wellness marketplace in 12 weeks - 120+ screens, 2 active payment providers, 3 live languages, B2B portal, and AI concierge.
What I Build
Production-grade platforms that handle real transactions and real users:
- →Two-sided marketplaces with matching and booking
- →Native iOS/Android apps with responsive web
- →Multi-tenant SaaS with role-based access control
- →Multi-provider payment integrations
- →Real-time WebSocket systems
- →AI-powered features via Claude API
Recent Work
Coyotes and Candles
Full-service creative platform
Replaced five separate tools (Calendly, Zoom, Patreon, Ko-fi, Discord) with one integrated platform. Booking, payments, live video, VTT, community channels, and admin analytics — built in ~8 days of active development.
Bluumo
Two-sided wellness marketplace
Enterprise wellness marketplace with 120+ screens, 4 user types, native mobile apps, 2 active payment providers, AI concierge, and B2B corporate portal. 181,000 lines of TypeScript built in ~12 weeks.
Suumio
AI companion journaling app
Production journaling app where users journal with one of 32 AI companion personalities powered by Claude. Live on iOS, Android, and web with Stripe billing and 32-language localization.
Technical Stack
Background
Experience: 8+ years development, 10+ years design/product
Education: B.Sc. IT (Metropolia), UX Design (Prime Digital Academy)
Location: Helsinki, Finland
Status: Open to full-stack engineer roles (EU work authorization)