About me

Hi, I'm Bryan 👋

Cloud SysAdmin and SRE. I like infrastructure that runs itself, teams that do less manual work, and leaving every system a little more secure than I found it.

I'm an Informatics Engineer from the University of Guadalajara, with 4+ years running production infrastructure.

Today: SysAdmin & SRE at Oracle Cloud (OCI)

  • With my team I run a fleet of ~15,000 bare-metal servers and hypervisors across multiple regions.
  • Patching and upgrades with zero unplanned downtime, with health checks before and after every change.
  • Automation that cuts manual effort: 70% of a ticket category resolves itself and each ticket takes 45–55% less time.
  • Standardized runbooks: ~60% fewer escalations.
  • On-call and major-incident response; building an AI-driven ops agent in Python.
  • DevSecOps mindset: least privilege, credential hygiene and vulnerability remediation.

Before: Flex

I maintained 500+ Windows and Unix servers for manufacturing, with 85–90% patch compliance. That's where I learned that reliable patching and good documentation are worth as much as any tool.

HackCore

My lab and content brand. This site runs on a Raspberry Pi 4 at home, and it's where I share what I learn: clear for people starting out in IT, with technical depth for experienced folks.

Right now

What I'm working on

Preparing for CCSK

The Cloud Security Alliance's cloud security certificate. Target exam date: October 2026.

AI ops agent

Autonomous triage and resolution of high-volume tickets, with precision/recall controls and human validation.

Freelance cloud work

Cloud infrastructure and migration projects. Right now: the platform that tracks ~3,500 slot machines for a casino.

See case →

Nearshore Cyber

Freelance, remote Research Assistant and active member of their LATAM cybersecurity community.

How I work

Principles I live by

Automate the repetitive

If I do it three times, it deserves a script. If the team does it daily, it deserves a tool.

Document for your 3 a.m. self

Standardizing runbooks cut escalations by ~60%. A good guide beats an on-call hero.

Secure by design

Least privilege, secrets handled properly, and nothing exposed to the internet that doesn't need to be.

Changes with a safety net

Pre/post health checks, canary releases and a rollback ready. That's how you patch with zero unplanned downtime.

Community

Sharing is part of the job

I believe security starts at home and that technical knowledge is most useful when it's explained well.

Talk for parents

I shared cybersecurity culture with parents of high-school students and gave them tools to protect their families.

Nearshore Cyber · Project Aramis

I take part in live events and community exercises like Backdoors & Breaches.

TryHackMe · HackTheBox

I practice on ethical hacking labs and publish open resources on GitHub.