A. Cerqua

Alberto
Cerqua

Alberto Cerqua
Frontend developer Open to opportunities

I am a frontend developer building production web and mobile applications, comfortable across the stack. Most of my depth sits where the interface meets real infrastructure: streamed responses, vector retrieval, schema validation at the boundaries, and legacy code that has to keep running while you fix it.

One year at Efebia (August 2025 to August 2026), progressing from frontend to full-stack across client products.

Selected work

#01

Realtime Client

SvelteKit / LiveKit / Fastify#02

Production Recovery

React Native / Expo / TanStack Query#03

Assistant Platform

SvelteKit / Fastify / pgvector#04

Personal Trainer Landing

Next.js / Cloudflare Workers / Tailwind

Open source

fast-json-stringify

Fastify ecosystem

PR #841 / Merged

Fixed a malformed comma serialization edge case in Fastify's JSON stringifier triggered by Zod-generated schemas. Verified with regression tests and benchmarks, reviewed and merged by the project maintainers.

Capabilities

Interface

Svelte / SvelteKit / React / Next.js / React Native / TypeScript / Tailwind CSS

Services and data

Node.js / Fastify / REST / WebSockets / SSE / Zod / PostgreSQL / Drizzle ORM / MongoDB / Docker

Retrieval and models

Google Gemini / LangChain / RAG / pgvector / Embeddings / Function calling