Andres Alejandro Apolinar Castillo

CTO · Senior Full Stack · Software Architect

ing.andresapolinar@gmail.com
Acapulco, Mexico
linkedin.com/in/andres-castillo-6362a3180

Eleven years building systems where a mistake costs real money. Five as CTO leading engineering at a software house and the platform that operated 20 mobile carriers with more than 300,000 users. Today I run Alean.

Systems in production

Xpace — The platform behind 20 mobile carriers2022–2026 · As CTO, I led the MVNO management platform that grew to operate 20 carriers and more than 300,000 users in production: SIM activation, top-ups, portability, tax invoicing and regulatory identity verification.
Oleada — Technology to bring Acapulco back2023– · Acapulco's smart travel guide, built with SECTUR Acapulco for the economic recovery after hurricanes Otis and John.
Gideon — One core, seven agents, your business on autopilot2025– · Seven AI agents —finance, legal, accounting, operations, marketing, design and engineering— that talk to each other to sell, charge and run your business inside WhatsApp.
Gideon Code — The full development cycle, orchestrated2026 · A system that walks the full development cycle: requirements, architecture, database, specification, implementation with tests, verification and archive.
Xirai Motors — Turning paper into an audited state machine2026 · End-to-end management for auto repair shops where every step a vehicle takes leaves an audit row.
Xirai — Medical system with AI2026– · A medical system with computer vision: reads radiographs, dental panoramic X-rays and skin lesions with YOLO, and handles the clinic's WhatsApp 24/7 to book and follow up.

Career

2023–Alean Sistemas InteligentesFounder · Software Architect
2020–20264Nova (Xpace)CTO · Software Architect
2019–2020Excel HumanFull-Stack Developer
2018–2019J&A Engineering GroupFull-Stack Developer
2017Kingo SystemsJava / C# / Angular Developer
2016–2019CETECWeb Development Instructor
2015–2016MultimaxTechnical Support

Tools

ArchitectureMicroservicios · Monolito modular · Clean Code · API REST
BackendPHP · Laravel · Node.js · TypeScript · Python · Java · C# · Spring Boot
FrontendReact · Next.js · Vue.js · Angular · Astro · Tailwind CSS · Ionic
DataPostgreSQL · MySQL · SQL Server · MongoDB · Redis · Drizzle
Cloud & infrastructureAWS · S3 · CloudFormation · Docker · Nginx · GitHub Actions · CI/CD
PaymentsStripe · PaymentIntents · Stripe Connect · Webhooks · SPEI · CFDI
MobileFlutter · Ionic · Telnyx WebRTC · Android

Education and languages

EducationB.Sc. in Information Systems Engineering
Universidad Interamericana para el Desarrollo · 2016–2019
LanguagesSpanish (Native) · English (Intermediate)