Software Engineer

Nicolás Cancino

I build production SaaS platforms in Go and Astro — backend, frontend, and cloud infra end-to-end. Currently shipping fitness/learning products for real clients.

Open to remote employment and select freelance work. Based in LATAM, working across timezones.

ncancino7@gmail.com · GitHub · LinkedIn

Selected work

Two SaaS platforms shipped to real clients.

Ambrocito Training

for a calisthenics coach

Solo build · 2 days from template clone

Calisthenics course platform: course → block → session hierarchy, video upload via signed R2 URLs, HMAC-gated playback through a Cloudflare Worker, MercadoPago checkout, JWT auth with Google sign-in linking. Cloned from the danig template in 2 days, then iterated independently.

Go 1.25 Astro 6 PostgreSQL Cloud Run Cloudflare Workers + R2 Supabase

Live Source

DaniG Yoga

for a yoga instructor

Solo build · 8-week original template

Yoga course platform — the original codebase. Hexagonal Go backend (chi + GORM + testify + testcontainers), Astro PWA frontend with hls.js video player, Cloudflare Pages + Cloud Run + Supabase deploy. Authored as a clonable template; ambrocito reuses 90% of its structure.

Go 1.25 Astro 6 PostgreSQL Cloud Run Cloudflare Pages + R2 Supabase

Live Source

How I work

Specs first, then code.

Every change in these projects flowed through a lightweight spec-driven workflow: proposal → spec (Given/When/Then) → design → tasks → apply → verify → archive. The artifacts are committed alongside the code in openspec/, so the reasoning behind every architectural decision (hybrid naming, AutoMigrate one-shot, dual-auth, secret rotation) survives review and onboarding.

I optimize for decisions documented, not lines of code. CI guards prevent regressions (DB_RUN_MIGRATIONS=true in production, donor-template leakage). Bugs caught in production land back in the runbook so the next operator avoids the wall I hit.

Tests are integration-heavy with testcontainers — I'd rather catch a schema bug against a real PostgreSQL than mock my way around it.

Stack

Tools I reach for.

Languages: Go TypeScript JavaScript SQL HTML CSS
Backend: Go (chi, GORM) PostgreSQL REST JWT auth Hexagonal architecture testify testcontainers
Frontend: Astro Tailwind CSS PWA / service workers hls.js
Cloud / Infra: Google Cloud Run Cloudflare Workers Cloudflare R2 Supabase Workload Identity Federation GitHub Actions
Tooling: Docker Git ripgrep Conventional Commits Spec-Driven Development

Get in touch

Let's build something.

Best reached over email. I read everything but reply faster to messages with context — what you're building, what stack, what you'd want from me.

ncancino7@gmail.com