// Toronto → working worldwide
I fragment systems, ship software, and tinker with human longevity.
Penetration testing, full-stack development, Arduino builds and biohacking research — collected in one place. Wherever you are in the world, this is where you reach me.
PHP · Java · Python · JavaScript · Arduino
$ whoami
javier — security & software
$ cat focus.txt
→ penetration testing
→ full-stack · php java python js
→ arduino & hardware
→ biohacking / longevity
$ location --now
Toronto, CA · remote worldwide
$
// what I do
Four things I go deep on.
Different disciplines, one common thread: taking things apart to understand how they really work.
Penetration Testing
Finding the gaps in a system before someone with worse intentions does.
Development
PHP, Java, Python and JavaScript — from backend logic to the browser.
Arduino & Hardware
Sensors, microcontrollers and small machines that do something useful.
Biohacking & Longevity
Notes on longevity research, emerging compounds and human performance.
// selected work
Things I've built.
A place for personal projects and the work I take on for clients.
[ screenshot / photo ]
Personal
[ Project name ]
An app, a tool or a hardware build of your own. Add a short description and a link.
View project →
[ screenshot / photo ]
Client work
[ Project name ]
Something you built on contract. Tell the story of the problem and how you solved it.
View project →
// currently
Where I am right now.
A rolling strip of photos from wherever the work takes me.
[ photo ]
NOW · TORONTO
Home base.
[ photo ]
[ CITY ]
[ what you were up to ]
[ photo ]
[ CITY ]
[ what you were up to ]
[ photo ]
[ CITY ]
[ what you were up to ]
// from the notebook
Writing & build logs.
Where I am, what I'm building, and what I'm reading right now.
BUILD LOG[ DATE ]
An Arduino build worth writing up
From the parts list to the finished thing — wiring, code, and what I'd change next time.
Read →
RESEARCH[ DATE ]
Notes on a longevity compound
Breaking down a paper or a molecule that's getting attention, in plain language.
Read →
FIELD NOTE[ DATE ]
Where I am this month
A short personal update, a few photos, and what I'm working on next.
Read →
// say hello
Wherever you are, let's talk.
I work across time zones and I'm open to projects, collaborations and the occasional contract. Email is the fastest way to reach me.
Toronto, Canada · available remote worldwide
Send a message