Fortino Sandoval

Built and launched a Mexico-first multi-tenant SaaS from zero to production, giving raffle organizers branded public sites and one operational system for raffles, reservations, payments, participants, and results. Publicly launched August 21, 2026.

• Production platform built with Next.js, React, NestJS, PostgreSQL, Prisma, Redis, and BullMQ.
• Role-aware operations, public verification, Stripe purchases, transactional email, and custom domains.
• Guarded asynchronous workflows for recovery and background processing.
• Immutable CI artifacts, VPS services, Cloudflare, systemd, rollback, and active monitoring.
• Built Companion Harness, a durable Codex/OpenCode runtime that reduced measured frontier context use by approximately 41%.

Worked on enterprise web applications where frontend architecture, state behavior, and backend integration had to stay predictable across complex modules.

• Built reusable split-screen and multi-panel frontend architecture.
• Built state-driven enterprise workflows with Angular, TypeScript, RxJS, and NgRx.
• Implemented save, restore, and overwrite behavior for an asynchronous draft workflow.
• Defined component boundaries, state transitions, and frontend/backend contracts.
• Integrated Java/Spring Boot and NestJS services while supporting Angular modernization.

Worked on enterprise web applications, internal tooling, modernization efforts, and legacy system maintainability.

• Initiated and implemented an AngularJS-to-Angular hybrid migration proof of concept.
• Built and proposed internal tooling for recurring marketing page updates.
• Introduced the initial Karma unit testing setup for an application without existing test coverage.
• Worked across Angular, AngularJS, TypeScript, Java/Spring integrations, SQL, and stored procedures.