Nina, an 11-year-old chocolate labrador nina · chief of moral support · 11 🐾 ezequiel mina · cdmx 🇲🇽 & bsas 🇦🇷

20 years building infra.
7M+ users to show for it.

CTO at Ualá México. Started in pentesting, moved to DevOps, joined Ualá on day one, and scaled it from a 6-month sprint to a multi-country fintech. Lately deep into AI and agents. Also: proud dad of Nina, an 11-year-old chocolate lab. 🐾

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zeke — bash
# welcome to zeke.ar

A bit about me

Currently CTO at Ualá México — leading Technology, Operations, and Security for the Mexican business.
Origin story Joined Ualá on day one (Nov 2016) as IT Infrastructure & Security Manager and built the entire platform from scratch — went live in 6 months. Nearly 10 years later, we're 7M+ users across Argentina, Colombia, and Mexico.
Background Started as a pentester at Cybsec (2006), moved through EY, the Argentine Ministry of Foreign Affairs, and 5 years as DevOps Engineer at Globant before betting everything on a fintech startup that was just a PowerPoint.
What I care about Infrastructure that scales without heroics. Security built in, not bolted on. Teams that can ship fast and sleep well at night.
Lately Going deep on AI and agents — building voice agents, automation pipelines, and exploring how LLMs reshape engineering workflows. The domain name is a nod to it: Nina the Lab. 🐾
Nina Proud dad of Nina, an 11-year-old chocolate labrador — co-pilot for long coding nights and the inspiration behind ninathelab.com.
Languages Spanish (native) · English (full professional)

Where I've shipped things

Ualá 9 yrs 7 mos · Nov 2016 — Present
CTO México
Jun 2023 — Present
Ciudad de México

Leading all technology for Ualá's Mexican operation — engineering, architecture, and execution. Responsible for growing the product and team in a new market while keeping the same infrastructure quality bar that got us here.

Engineering Leadership Product Strategy Team Scaling Fintech
Head of Infrastructure & Core Systems Engineering
Jul 2021 — Present
Argentina

Owning the full infrastructure estate as Ualá expanded across Argentina, Colombia, and Mexico. Keeping a multi-country platform stable and secure while the user base grew by orders of magnitude — balancing reliability, speed of delivery, and a security posture that actually holds.

AWS GCP Kubernetes Terraform CloudFormation CI/CD Observability
IT Infrastructure & Security Manager
Nov 2016 — Aug 2021
Argentina

Day one. Designed and implemented Ualá's entire platform architecture from scratch — shipped to production in 6 months. Cloud computing on AWS & GCP, serverless, Infrastructure as Code (Terraform, CloudFormation), CI/CD (Jenkins, AWS Code Tools), and databases (RDS, DynamoDB, PostgreSQL, MySQL). The foundation everything else was built on.

AWS GCP Serverless Terraform Jenkins PostgreSQL DynamoDB Linux
DevOps Engineer
Globant
Oct 2011 — Oct 2016
Buenos Aires · 5 yrs

Designing, building, and scaling infrastructure solutions for enterprise clients like Scripps Networks, Southwest Airlines, and WPP. Built monitoring systems, troubleshot production issues, and brought an infosec lens to every infrastructure decision — a combo that was rare at the time and turned out to be exactly what a fintech startup needed in 2016.

DevOps Infrastructure Cloud Monitoring Linux
IT Security Coordinator
Cancillería Argentina · Ministerio de Relaciones Exteriores
Jan 2009 — Dec 2009
Buenos Aires

First time owning a security program rather than just executing on it. Covered the full spectrum — pentesting, server hardening, IDS and firewall deployment, and ongoing audits across servers and workstations. The role where defensive and offensive security clicked together as two sides of the same problem.

Penetration Testing Firewalls IDS Server Admin IT Audits
Security Consultant
Ernst & Young
Jul 2008 — Dec 2008
Buenos Aires · 6 mos

SAP security research for the AySA project, IT auditing for Warner Music, and development of security standards and checklists. First exposure to how large organisations think about (and budget for) security.

SAP Security IT Audit Security Standards
Security Consultant
Cybsec S.A.
Sep 2006 — Jul 2008
Buenos Aires · 1 yr 11 mos

Where it all started. Network, web app, and wireless penetration testing. Security standards & checklists, hardening of critical systems, vulnerability management, firewall implementation. The kind of work that teaches you how things actually break — invaluable for building things that don't.

Penetration Testing Network Security Web App Security Wireless Hardening Firewalls

What I reach for

AI & Agents

LLMs AI Agents Claude Gemini OpenAI MCP RAG Prompt Engineering Tool Use Voice AI ElevenLabs Whisper LangChain Vector DBs

Cloud & Infrastructure

AWS GCP Kubernetes Terraform CloudFormation Serverless Docker Linux

CI/CD & Databases

Jenkins AWS Code Tools PostgreSQL MySQL DynamoDB RDS

Security

Information Security Penetration Testing Firewalls IDS Cloud Security DevSecOps IT Audits Hardening

Leadership

Engineering Leadership Team Building Platform Reliability Incident Management Fintech Startup Scaling

Things I've built on the side

Maschitto

Property Management Platform

React TypeScript Supabase Mapbox Teller API

Full-stack platform for managing rental properties end-to-end — tenant profiles, leases with PDF generation, bank sync and AI-powered transaction classification, maintenance tracking, tax summaries, and portfolio analytics.

Timba 2027

AI · Politics · X · Open Source

AI X API Open Source LLMs

My first open source project — an experiment playing with AI, Argentine politics, and X. Autonomous bot running the @Timba2027 account.

Karla — AI Voice Agent

Voice AI for Logistics · Assistcargo México

FastAPI Next.js Gemini 2.5 ElevenLabs Groq Whisper

AI voice agent that calls truck drivers to validate cargo trip data — handling confirmations, discrepancies, and new trip creation via tool calls, all in natural Mexican Spanish. Designed for 200K calls/month at ~$0.015/call.

Clawdia

Personal Chief of Staff · 24/7 AI Agent

Openclaw GLM-5.1 Claude Opus 4.7 Claude Haiku ElevenLabs WhatsApp Google Drive Gmail

My personal Chief of Staff — an agent running on Openclaw with a multi-model setup (GLM-5.1, Claude Opus 4.7, Haiku) and ElevenLabs for voice. Integrated with WhatsApp, Drive, and Mail, she handles tasks, scheduling, and reminders 24/7.

$ open --mailto ezeq.mina@gmail.com

Let's talk infra, fintech, or LatAm.

Open to interesting conversations, advisory roles, and people building ambitious things in the region.