Mario Javier González Romo
@mariojaviergonzlezro
I build reliable Python ETL pipelines and data integrations from messy, multi-source data.
MexicoWhat I'm looking for
I've built Python ETL pipelines, API integrations, and SQL/NoSQL solutions across research and industry in Mexico and the UK.
As an independent software developer and technical consultant, I build reusable workflows for ingesting, validating, cleaning, transforming, integrating, and reporting data from third-party APIs and structured or unstructured sources. I optimize complex SQL and develop backend data solutions with Python, Flask, REST APIs, and SQL/NoSQL databases.
At the University of Exeter, I designed pipelines and data-driven modules for complex analytical and engineering applications, while translating technical work into dashboards, visualizations, reports, and maintainable solutions.
Experience
Work history, roles, and key accomplishments
Independent Software Developer & Technical Consultant
Freelance
Nov 2023 - Present (2 years 10 months)
Developed Python-based data workflows for ingestion, parsing, validation, cleaning, transformation, and integration from third-party APIs and structured/unstructured sources. Built reusable ETL and automation workflows using Python, Pandas, NumPy, SQL, JSON, XML, and CSV.
Software Developer & Research Fellow
University of Exeter
Feb 2019 - Mar 2023 (4 years 1 month)
Designed and implemented ETL pipelines for cleaning, integrating, and transforming data from varied and often messy sources. Developed data-driven modules and backend APIs using Python, Flask, REST APIs, SQL/NoSQL databases, and MongoDB.
Software Developer
INEEL – National Electrical Institute & Renewable Energy
Jan 2014 - Oct 2017 (3 years 9 months)
Designed and optimized SQL databases for data-intensive, mission-critical engineering applications, including complex joins and query tuning. Developed automated analytical reports and data-driven user interfaces, reducing manual reporting workload.
Education
Degrees, certifications, and relevant coursework
Cardiff University
Doctor of Philosophy, Systems Engineering
Doctor of Philosophy in Systems Engineering from Cardiff University.
University of Guanajuato
Master of Science, Electrical Engineering
Master of Science in Electrical Engineering from the University of Guanajuato.
University of Guanajuato
Bachelor of Science, Electronics & Communications Engineering
Bachelor of Science in Electronics and Communications Engineering from the University of Guanajuato.
Udemy
Python and Flask Bootcamp, Python and Flask
Completed the Python and Flask Bootcamp certification.
Udemy
REST APIs with Flask, Docker, MongoDB & AWS, REST APIs with Flask, Docker, MongoDB & AWS
Completed the REST APIs with Flask, Docker, MongoDB & AWS certification.
Udemy
Data Modelling Fundamentals, Data Modelling
Completed the Data Modelling Fundamentals certification.
Tech stack
Software and tools used professionally
Availability
Location
MexicoAuthorized to work in
Salary expectations
Skills
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