A career across technology, management and the classroom.

These are the main milestones, from the most recent to the oldest. My full résumé is on LinkedIn.

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Mario Roa speaking into a microphone in an auditorium

Today
Web development, apps, AI and data analysis
Systems engineering
Websites, apps, AI-assisted vibecoding and data analysis with Power BI and Microsoft Fabric.
Go to Systems engineering
Today
Algorithmic trading
NinjaTrader
Indicators and automated strategies for NinjaTrader, with simulation and statistical validation.
Go to Algorithmic trading
2000–2014 and 2016–today
Level I, II and III support technician
Outsourcing, Venezuela and Colombia
More than 20 years in tech support. Today it continues with Llamen al técnico (“Call the technician”).
Go to Tech support
2018–2026
Web Master and head of the technology platform
Instituto Malla, Palmira (on site until 2022, remote since 2022)
Networks, website and technology platform of the institute, first on site and then remotely.
Instituto Malla: technology for the institute
What I did
I led the institute’s technology upgrade project.
I directed the installation of structured cabling and networks (LAN and wireless) at all three campuses.
I designed and launched the institute’s website, with digital catalogs of its academic offering and online payments.
I maintain the institute’s whole web platform.
Result
The institute has its own web platform, with catalogs of its academic offering and online payments, and networks at its three campuses.
malla.edu.co(opens in a new tab)Instituto Malla, a technical job-training institute in Palmira, Colombia. Site development.
Go to Systems engineering
2025
Data Analytics bootcamp
Henry, Buenos Aires
Training in data analysis. Henry Data Analytics certificate, January 2025.
2021–2022
Instructor for Systems, Administration and Occupational Health and Safety technical programs
CENAC, Palmira
Classes in three technical training programs, in Palmira, Valle del Cauca.
2018–2021
Instructor for the Computer Maintenance technical program, and teacher of Office Software and Systems in the Accounting and Administration programs
Instituto Malla, Palmira
Teaching in job-oriented technical training, in Palmira, Valle del Cauca.
2017–2018
Coordinator of the learning resources center
Escuela Técnica Agroindustrial Gervasio Rubio, Táchira
A coordination post at the school where he had also been a classroom teacher.
2015–2016
Planning and Budget Manager
Inmobiliaria Nacional, Housing Ministry, Caracas
Advising senior management on planning and performance control.
Inmobiliaria Nacional: budget on time
What I did
I advised senior management on planning and performance control.
I created a tool for real-time budget control and availability.
I gathered and processed data nationwide to prepare the budget.
Result
The Inmobiliaria Nacional budget was submitted and approved on time by the Planning Ministry for the first time.
Go to Management
2015–2016
Chief of staff, Vice Ministry of Public Works and Performance Control
Housing Ministry, Caracas
Organizing the vice minister’s agenda and tracking performance.
Vice Ministry: agenda and performance
What I did
I organized the vice minister’s agenda.
I coordinated the departments.
I set up a data-based performance tracking system.
Result
The use of time on the vice minister’s agenda was optimized by 20%.
Go to Management
2012–2015
Instructor of Computer Architecture, Web Design and Software Engineering
IUT Agroindustrial Región Los Andes, Delicias, Táchira
University teaching in three computing subjects.
2011–2012
Municipal campus coordinator
Universidad Bolivariana de Venezuela, Rubio
Coordination of the university’s municipal campus.
2011
Master’s in Global Planning
UPEL, “Gervasio Rubio” Rural Pedagogical Institute
Graduate studies in planning.
2009–2011
Director-Principal
Escuela Técnica Carlos Rangel Lamus, Rubio, Táchira
Leading a technical school.
Go to Management
2008–2013
Head of the Computing department
Alcaldía del Municipio Junín, Rubio, Táchira
In charge of the city hall’s technology and systems.
Junín city hall: systems and infrastructure
What I did
I set rules and procedures for hardware and software.
I implemented new systems.
I handled backups and information security.
I kept inventory control and preventive and corrective maintenance.
I looked after the network infrastructure.
I built situation rooms with real-time indicators and reports for the mayor.
Result
Modernization of the city hall’s systems and infrastructure.
Go to Management
2007
Teacher, Computing major
UPEL, Barquisimeto Pedagogical Institute
Training as a teacher with a computing major.
2003–2009
Classroom teacher of Mathematics and Computing
Escuela Técnica Agroindustrial Gervasio Rubio, Rubio, Táchira
Mathematics and computing classes at a technical school.
Go to Pedagogy
2002
Systems Engineer
Instituto Universitario Politécnico Santiago Mariño, San Cristóbal
Undergraduate degree in systems engineering.