Empresas
Kilowatto
“I've worked for someone else a handful of times in my life — it's clear I don't like having a boss. Now I have clients. I traded one boss for many. Fuck.”
— Esteban Rey
- 2000–2003
Universidad Latinoamericana (ULA)
Systems Manager
First formal job: deployment of physical wired and wireless network (very new technology at the time), VoIP, ERP, and CRM. His grandfather Tito was a founding member and former rector of this same university.
- 2003–2006
Prochemex
CTO / Project Manager
Mexican financial institution providing protection and support for transactions. Led the migration to Pivotal CRM ContactCenter on Microsoft .NET, improving the contact center's response time by over 50% and achieving over 10% monthly growth in cardholders.
- 2008–2016
DeSiCi (Desarrollo de Sistemas Corporativos en Internet)
Founder
Custom development and process consulting company. Authorized Zoho partner (CRM, Books). Operated for over 15 years as a bridge between Latin American companies and world-class agile software.
- 2013–2022
OnCloud (Súbete a la Nube S.A. de C.V.)
Founder and CEO, then CTO
Pioneer of cloud computing/IaaS in Mexico. "Zero Initial Investment" model. Partnerships with Pure Storage, Rubrik and Acronis. Sold with a 19x return for partners (104% annualized).
- 2022–2022
Octapus Inc
Cofundador y CTO
Cofundada con el capital de la salida de OnCloud. Paso breve.
- 2025–
Ignia Cloud
Founder and CEO
"The Orange Cloud" — sovereign and hyper-powerful cloud for Mexico and LatAm, with hybrid/multicloud architectures. 99.9% SLA, up to 12M IOPS, unlimited traffic with no hidden charges.
- 2024–
Cereza
Founder and Board Advisor
Software de Recursos Humanos: estructura organizacional, asistencia, nómina, reclutamiento, desempeño y capacitación en una sola plataforma.
- 2025–
Finsus
Director de Infraestructura
Rol de empleado (no fundador ni inversionista). Lidera un equipo de 15 personas; reporta al Director Adjunto de Finanzas y Administración, quien reporta al Director General.
- 2016–
DeSiCi (Desarrollo de Sistemas Corporativos en Internet)
Board Advisor
Hoy opera bajo la dirección de Roberto (CEO), con supervisión ocasional de Esteban.
- 2021–
Orange Rhino Investments
CEO & Chief Coffee Maker
- 2024-12–2026-01
Pilou
CTO
My projects
Live, right now.
Founder and CEO
Ignia Cloud
Ignia Cloud offers secure, scalable, and high-performance cloud solutions designed to provide flexibility, security, and scalability to businesses. Its services include customized analysis, resource optimization, security enhancement, and management of large data volumes, among others.
Founder and sponsor
Yucatech Festival
Technology festival in Mérida
capital y ciudad más poblada del estado de Yucatán, México, Yucatán — artificial intelligence, cybersecurity, and cloud, with real capital behind every pitch in the "Elevator Pitch Hour". First edition: April 16, 2026, with over 500 attendees, featuring Uri Levine (cofounder of Waze
aplicación móvil de navegación GPS) as a speaker. Esteban funds it out of pocket, non-profit.Creator
Vectron
A public, navigable 3D map of meaning: 20,473 real concepts embedded with bge-m3 (Workers AI) in 1,024 dimensions and projected to 3D via PCA, rendered in WebGPU with Three.js. It grew out of the AI courses Esteban teaches every month, so the audience can see an LLM's semantic space instead of imagining it — and it explicitly measures where the projection lies instead of hiding it.
Cereza
Cereza is a Human Resources software that helps streamline human capital management and keeps a record of productivity across various areas. It offers solutions to simplify administrative processes, manage employee performance and development, talent attraction, training and development, asset management, and organizational climate.
Creador
Math Challenge
Un juego de retos matemáticos que va de contar patos a topología algebraica — desde los 4 años hasta nivel profesional. Un padre se registra y crea perfiles para sus hijos; una prueba de nivel adaptativa fija la dificultad. Gratis para siempre, sin cámara ni micrófono ni biometría, con 47 investigaciones públicas detrás de cada decisión de diseño.
Aluna
Aluna is an event management and workspace platform that offers tools to organize events in a comprehensive manner, including agenda, sponsors, finances, contact CRM, and more. The platform provides different payment plans, including a free plan, and allows connection with Google or Microsoft 365 accounts to sync calendars and contacts.
Founder
DeSiCi
DeSiCi is a company that offers software development and cloud solutions for growing businesses, providing services such as web and application development, integration with SAP Business One, cloud solutions, virtualization and remote access, collaboration and productivity, and backup and cybersecurity. The company aims to optimize and grow its clients' businesses through modern technology and customized solutions.
Larry