Senior software engineer · 7 years in TypeScript · I build with AI and ship fast.
I'm Javier (R. J. Siacca) — a senior software engineer in Córdoba, Argentina 🇦🇷, currently at GlobalLogic. Seven years shipping React, Angular and Node, front to back.
These days I build with AI in the loop — from spec to ship. It's made me dangerously fast: I prototype, refactor and review with models as a constant pair, and spend the time it saves on the parts that actually need a human — architecture, edge cases, and the calls that matter. I like systems that, once built, quietly run themselves.
- AI-native — models in the loop for spec, prototyping, refactors and review. Faster iterations, sharper focus.
- Production TypeScript across the stack — React, Angular, Node, Next.js.
- Architecture & data integrity that survive contact with reality.
- Automations that, once set up, run themselves.
- Elden Ring — Codex of the Fractured Order — a lore wiki I went deep on: 382 cross-referenced entries, every link script-verified (zero broken refs), full i18n, architected so the DLC slots in inline. React SPA.
- Elden Ring Build Advisor — point it at your
.sl2save; it parses the binary and tells you which weapons your build can actually wield. React · Node · Docker. - FitFlow (private) — end-to-end WhatsApp automation for gyms: bookings, reminders, conversational flows. n8n · Evolution API · Supabase.
- Cashflow (private) — a local-first personal-finance desktop app for cash-flow decision-making: real margin, projections, installments, debts and live USD/ARS — no cloud, no telemetry. Tauri 2 · React 19 · SQLite.
TypeScript · React · Angular · Next.js · Node · Supabase / Postgres · Docker · n8n
…and I build all of it with AI in the loop.
LinkedIn · javisiacca@gmail.com
Let the model type. Keep the judgment.