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Ernesto Vizcaíno

Product Engineer — AI, Fintech & SaaS

I build and launch full-stack products from zero to production. I’ve founded SaaS products, built fintech and AI systems, and shipped mobile software used by thousands of people.

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Experience

I take products from initial concept to real users, combining engineering, product decisions and a close understanding of how the software performs in practice.

Jan 2026 — Present
Founder / Product Engineer atKashi
Designed and built an offline-first POS for small businesses across mobile and web, including inventory, sales, customer credit, reporting and cross-platform subscriptions.
Apr 2026 — Present
Founder / Product Engineer atPasaEGEL
Founded and built an EGEL preparation platform end to end, including interactive simulations, payments, analytics and SEO. Reached 300+ users, 5,000+ monthly visitors, 130+ paid orders and top-five Google rankings, driven primarily by organic search.
Oct 2025 — Jan 2026
AI Engineer / Founding Team atFinanciamiento Inteligente / Xignus
Built a credit pre-approval system that supported more than $4M MXN in SMB financing during its first month, alongside AI agents and financial dashboards built with React and Python.
Jan 2024 — Jul 2025
Technical Co-Founder atOliver AI
Led engineering across a fintech platform and production AI workflows for loan origination, risk analysis, compliance and document processing.
Aug 2021 — Dec 2023
Founder / Engineer atOliver POS / ERP
Built and launched a React Native POS app that reached 10,000+ downloads and 3,000 active users within three months, then expanded it into a complete web ERP.