Vol. I · No. 1 — Selected Work, 2024 – 2026
I build React & TypeScript
products with the patience
of a printed page.
Zoriah Cocio is a software engineer working across frontend and full-stack product engineering — high-performance UI, applied AI, and security interfaces, for finance, SaaS, and developer tools. The work below is chosen, not collected: seven volumes that show how I think about a product, not just what I can ship.
Open to software, frontend, full-stack, and product engineering roles.
Core stack
- React
- TypeScript
- Next.js
- Tailwind
- Radix
- Vite
- TanStack
- Zod
- Node.js
- WebSockets
- Server-Sent Events
- Redis
- PostgreSQL
- Anthropic API
- REST & API integration
Also — Go · C++ (systems work)
The short versionFor recruiters
Profile
Seven years building production web apps as an independent engineer for 50+ clients across fintech, SaaS, and applied AI — usually as the sole or founding engineer. I own features end to end: React/TypeScript frontends, Node, Go, and Python services, and the API and data layers between them, with a bias toward dense, fast, accessible interfaces and measurable performance.
Index of workSeven volumes · 2024 – 2026
Index of work
01
SpendBoard
A finance dashboard that holds a 200ms interaction budget while scanning 50,000 rows.
- React
- TypeScript
- Vite
- TanStack Table
- TanStack Virtual
02
Dense UI
A compact React component system for data-dense tools, with a bundle budget that fails CI past 18kb.
- React
- TypeScript
- Radix UI
- Storybook
- CSS variables
03
FrontGuard
An interactive frontend-security playground wired to a real, production-shaped telemetry pipeline.
- Next.js
- TypeScript
- Redis
- Route Handlers
- RBAC
04
Ledgerline
Real-time trading UI over a multiplexed Binance WebSocket — worker plus buffered queue, no dropped frames.
- React
- TypeScript
- WebSocket
- Worker
- Buffered queue
05
FrontGuard Agent
A 1.94kb, zero-dependency runtime agent emitting typed security events into one shared pipeline.
- TypeScript
- MutationObserver
- postMessage
- DOM APIs
- Rate limits
06
RevAssist
An applied-AI deal desk where a server-validated Zod schema — not the prompt — is the product.
- Next.js
- TypeScript
- AI SDK
- Zod
- Postgres
07
Cardinal
A sharded time-series database: C++17 storage engine plus Go control plane, ~11.6M samples/s ingest.
- C++17
- Go
- CMake
- Gorilla compression
- Shared memory