Note
Activity is a starting point.
A workflow running for longer doesn’t mean it did more useful work. First: what does a good result look like, and how does someone check it?
Notes on measurement →$~:whoami> matheo
Secure systems.
Reliable data.
Useful AI.
I’m Matheo, a security engineer working across data platforms and applied AI. I turn fragmented information into useful software, with clear checks on what gets trusted, automated, and shipped.
A little curiosity goes a long way. Press ~ for a terminal.A little curiosity goes a long way. Tap >_ for a terminal.
Selected work
Anonymous case studies: the problem, the stack, the decisions, and the evidence.
Data platforms & applied AI
A decision-support data product
Keeping searchable records, calculated answers, and generated explanations consistent as the underlying facts change.
Product engineering & information quality
An AI-assisted briefing product
Turning a stream of incoming information into searchable records and reviewed briefings, with usable behavior when dependencies fail.
Operational tooling & measurement
An operational measurement pipeline
Collecting usage and cost without confusing missing data, observed activity, and estimates of value.
Real-time application engineering
A real-time collaborative application
Keeping a shared session coherent across phones, reconnects, timed phases, and external-service failures.
Browser product engineering
A local-first learning platform
Giving multiple learning activities a consistent shell, shared preferences, and progress that stays on the device.
How I build
Start with the problem.
Understand the people, constraints, and useful outcome before choosing a tool.
Keep evidence close.
Make facts and calculations traceable, and leave uncertainty visible.
Separate making from checking.
Give implementation and review distinct roles. Observe the result where people use it.
Own the decisions.
Automate bounded work, make tradeoffs explicit, and keep human judgment where it matters.
An illustrative workflow
← Back to principlesAn engineer.
Still curious.
Security is my starting point. I’m interested in how data, software, and AI fit together—and in making the result useful to the people who rely on it.
World explorer, mentor, and tinkerer. Pushing to prod since Win95. I make room for community work, playful experiments, and learning something outside my usual lane.
Note
Sometimes less software helps.
A small tool can keep preferences on the device, work without an account, and leave less to maintain.
More on the blog ↗Community
Security people can use.
Helping older adults recognize scams, protect themselves online, and know where to turn when something goes wrong.
Community & resources →$ contact --channel linkedin
Working on security, data, or useful AI?
Let’s talk.
© 2026 Matheo Lord-Martinez
$~:ls playground/
Arcade 95
Games, desk accessories, and a terminal with a few secrets, inside a little computer from a different era.
- Pinball
- Snake
- Tetris
- Breakout
- Asteroids