I combine technical foundations with commercial instinct: systems, security, product, customer behavior and growth.
Mario Escudero — building from Madrid to Boise
Hello.
I build companies, products and systems for the way people live and work next.
Founder · Operator · BuilderMadrid / Boise
Private discipline.
Public ambition.
My route began with systems and cybersecurity, then moved through enterprise, across countries and toward company building. Today I am building Seltr and developing products of my own.
M/E
2continents shaping one point of viewArtificial intelligence is one tool in the work—not the identity. The identity is curiosity, speed, taste and the discipline to ship.
“Build quietly. Let the outcome make the noise.”
02 / Selected work
Things I could not leave unbuilt.
Products at the intersection of technology, behavior and leverage.
Health product
Fitni
A personal system for training, recovery, nutrition and mood.
SwiftUI · HealthKit · Product
Personal OS
Syntra
A private space for reflection, goals, memory and long-term context.
Swift · Edge · Systems design
Market experiment
ApexLab
A social paper-trading arena built around live markets and shared conviction.
Next.js · Realtime · Markets03 / Experience
The work behind the point of view.
Companies and high-trust environments that turned technical ability into judgment.
Seltr
Founder
Madrid / Remote
Building the operating layer that helps clinics recover missed opportunities, follow up with patients and turn conversations into appointments.
DXC Technology
Cybersecurity Operations
Spain
Worked inside an enterprise security environment across SOC operations, Trend Micro auditing, KQL analysis and Python automation.
Berkshire Trails
International Leadership
Massachusetts, USA
A high-trust role built around responsibility, communication and leading people in a fast-moving international environment.
04 / Education
Two disciplines. One direction.
Boise State University
Entrepreneurship Management
Business models, leadership, finance and the mechanics of building an enduring company.
Universidad Francisco de Vitoria
Systems & Network Administration
Infrastructure, networks, code, databases and operational security.
05 / Certifications
Focused credentials.
AI for Everyone
DeepLearning.AI
Google Cybersecurity
Jr Penetration Tester
Professional credential
Cyber Security 101
Professional credential
Leadership Certificate
Leadership development
English Proficiency
Duolingo English Test