Principal Engineer · Cisco Systems

AI &
Infrastructure
Security

Model. Preach. Teach.

I joined Cisco in August 2006. I’ve stayed because the work kept pulling me into new ground. Cloud, networking, security, systems. Functional beats impressive. I aim for the first.

Mario J. Ruiz
Based inNew York, NY
SectorFinancial services

01 — What I do

The CTOs and CISOs I work alongside are making 3-to-5 year decisions about where intelligence, defense, and automation belong in their stack. My job is to translate engineering reality into decisions they can actually make.

Current focus

01
AI security postureWhere defense belongs when the model is part of the stack
02
Kernel-resident telemetryIsovalent Tetragon, Cilium
03
Fabric-resident defenseCisco Hypershield
04
Line-rate enforcementNexus Smart Switches
05
Secure interconnectData center DCI across hybrid topologies

03 — Track

Twenty years at one company, across nearly the entire lifecycle of a product: engineer it, bring it to market, sell it, support it, then move to the next thing.

Principal Engineer, AI & Infrastructure SecurityCisco — global financial services clients
2023 —
Technical Lead, Application SecuritySecure Workload, Secure Cloud Native, Secure Application
2019 — 22
Member of Technical Staff, InsiemeNexus 9000 and Application Centric Infrastructure to market
2013 — 19
Software & systems engineeringIntern, associate SE, systems engineer, consulting SE
2006 — 13

04 — Credentials

Certifications

  • CCIE #27189, Cisco Certified Internetwork Expert
  • Cisco AI Technical Practitioner
  • Meta Backend Engineering
  • Microsoft Azure Developer Associate
  • Cisco Certified Specialist, Enterprise Core
  • Cisco Certified Specialist, Data Center Core
  • VMware Certified Professional, Network Virtualization
  • AWS Advanced Networking

Education

  • MBA, Business Analytics — Syracuse University, 2024
  • Data Science Math — Duke University, 2022
  • BS, Telecommunications Engineering — St. John’s University, 2006

Recognition

  • Distinguished Cisco Live Presenter
  • Senior Technical Leadership Development Program
  • Chairman’s Club, FY19
  • One of 3 selected from 300 candidates, Cisco Sales Associate Program

Speaking & writing

  • Speaker, Cisco Live
  • Lead presenter, Cisco NYC Networkers

05 — Contact

Say hello

Happy to talk architecture, segmentation, or where AI security actually holds up in production.