Skip to content
Jon Pena

IT Systems Engineer · Fort Lauderdale, FL

Jon Pena

Systems engineer who writes the software.

7+ years as the sole or lead technologist for multi-site networks, Linux and Windows systems, Microsoft 365 and endpoint fleets, and the Python and JavaScript automation that ties them together. Now building LLM tooling for operations.

Open to systems and platform engineering roles

jon@inertify: ~

How I work

  1. 01

    Isolate

    Find the layer the fault lives in before touching anything: cable, route, port, certificate, config.

  2. 02

    Fix

    Fix it there, not three layers up where the symptom showed.

  3. 03

    Script

    Turn the fix into automation so the same ticket never needs a human twice.

Selected work

Things I've built

All repositories on GitHub

Also on GitHub

Arcade

Take a break

Snake and Breakout, because every portfolio should have an arcade. Mouse, keyboard or touch. Press play on one and the other pauses.

score 0 best 0

Snake

Eat the dots, don't bite yourself. The walls wrap around.

score 0 lives 3 · level 1 best 0

Breakout

Clear the bricks and catch the falling pickups. Move the mouse (or drag) to steer.

drag to move · tap to launch / fire

Reading list

Today in tech

All feeds: Hacker News, AI, Lobsters
  1. #1 on Hacker News Postman silently auto-installs AI plugins and attempts to share all API data

    Postman's desktop app automatically installs AI coding plugins for Codex and Claude, modifying local user configurations and trust hooks without user consent.

    github.com 1347 points 454 comments 19h ago

  2. #2 on Hacker News Jailbreaking my car's navigation system just so I can change the time

    A Renault driver reverse-engineered their car's TomTom navigation system and bypassed its DRM to change the clock because the unit requires a valid map SD card to access time settings.

    blog.nns.ee 869 points 327 comments 1d ago

  3. #3 on Hacker News Qwen 3.8 27B on my laptop can interpret model weights, too

    The Qwen 3.8 27B model running locally can interpret raw neural network weights without executing code, successfully identifying games from model weights.

    simonwillison.net 658 points 193 comments 19h ago

Contact

Let's talk

Recruiter, hiring manager or fellow engineer: leave your name and email and I'll write back. A note about the role or problem helps.

jonpena@inertify.com

π