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David Mejia GuzmánDG
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David Mejia Guzmán

@davidmejiaguzmn

I build and modernize Python backend systems, payments, and high-volume databases.

Mexico
Message

I've built financial backend modules at UTEL for approximately 80,000 active students, integrating Mercado Pago, Nequi, PayU, Banco Pichincha, and Efecty while automating reconciliation across 23 million historical payments.

At Ixulabs, I restored legacy insurance platforms and seven microservices, reduced PostgreSQL query time by approximately 67%, and led technical decisions across backend, infrastructure, and integrations. Across education, insurance, government, and finance, I use Python, Django, REST APIs, PostgreSQL, Celery, Redis, and cloud infrastructure to modernize transactional systems.

Experience

Work history, roles, and key accomplishments

Education

Degrees, certifications, and relevant coursework

PL

Plenumsoft

Diploma, Data Science & Artificial Intelligence

2018 - 2019

Diploma in Data Science & Artificial Intelligence from Plenumsoft, completed from 2018 to 2019.

IP

Instituto Tecnológico de Pachuca

Bachelor's Degree, Information Technology and Communications Engineering

2010 - 2015

Bachelor's degree in Information Technology and Communications Engineering from Instituto Tecnológico de Pachuca, completed from 2010 to 2015.

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