Albert Calasanz

Co-founder and lead developer of Regist.es, a B2B SaaS for real-time management and profitability in the construction sector. Built from scratch on SvelteKit, TypeScript, Drizzle, and PostgreSQL (80+ tables schema, 110+ endpoints), with end-to-end Dockerized deployment on a VPS managed by me.

The differentiating factor is the compliance engine: time tracking with an immutable audit trail (hash-chain) and dual approval, designed for digital time control and Verifactu. It also includes my own real-time Gantt chart (websockets, drag-and-drop, infinite scroll) built without libraries — the same engineering I apply to INAUTEC's ERP, with independent code.

Soy técnico y programador y organizador de proyectos fullstack donde trabajo extensamente con Sveltekit, Svelte 5 y triggers de PostgreSQL/ MySQL. Además trabajo para hacer proyectos auto-alojados con nginx, VPS y servicios personalizados. He trabajado con Debian, Raspberry PI OS, y otros muchos sistemas operativos y/o entornos. Además conozco y me desenvuelvo en archivos del sistema como BIOS, Drivers (xrandr), y gestiones en red.

Architect and sole developer of the comprehensive ERP system that supports INAUTEC's daily operations: time tracking, HR, projects, real-time Gantt chart, planning, calendars, and vacations. Built from scratch without UI/logic libraries — only SvelteKit (Svelte 5), Drizzle, and Zod, with PostgreSQL/MySQL triggers — featuring a proprietary Gantt chart (websockets, drag-and-drop, infinite scroll) and custom authorization and permission middleware. Deployed and maintained by me end-to-end on a self-hosted VPS (nginx, Debian). In production and under continuous maintenance for approximately 1.5 years, used daily by 20-30 people for real-time clock-in and tracking, with Excel import/export and legacy system migration.