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Sergio PerezSP
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Sergio Perez

@sergioperez1

AI / Backend Engineer at Hospital I Tingo María – EsSalud, where I built a RAG clinical-request auditor that improved evaluation accuracy to 74–80%.

Peru
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At Hospital I Tingo María – EsSalud, I designed and implemented a RAG-based clinical-request auditor with an LLM agent that flags issues in clinical histories and diagnostic coding before records are submitted. In evaluation on 50 labeled real cases, it reached 74–80% accuracy, with no invented data and all 11 adversarial cases rejected.

I also built data pipelines to extract, anonymize, normalize, and import clinical records from ESSI and REFCON, institutional systems without public APIs. My Python analysis of 15 months of historical data supported a proposal to install a CT scanner and surfaced a 399% gap between demand and capacity in General Medicine.

As an independent software developer, I delivered middleware connecting a clinic’s HL7 infrastructure to an AMIS-850 medication dispenser that exposes only a proprietary SDK, and developed a pharmacy point-of-sale and inventory system with DIGEMID registration and FEFO lot tracking. My projects include clinical referral services and a pediatric clinic management platform, using Python, FastAPI, Django, and PostgreSQL.

Experience

Work history, roles, and key accomplishments

HE

Digitador Asistencial

Hospital I Tingo María – EsSalud

Jan 2013 - Dec 2021 (8 years 11 months)

Operé los sistemas clínico-administrativos del hospital en rotación por todas sus áreas, adquiriendo conocimiento de dominio y participando en el etiquetado de datos para la evaluación del auditor.

Education

Degrees, certifications, and relevant coursework

Platzi logoPL

Platzi

Ruta de Desarrollo Backend con Python, Backend Development

Completed a certification in the Python Backend Development route.

DA

Data Science Analysis

IA y Aprendizaje Automático con Python, Artificial Intelligence and Machine Learning

Completed a certification in AI and Machine Learning with Python.

Platzi logoPL

Platzi

Django REST Framework, Web Development

Completed a certification in Django REST Framework.

Universidad Tecnológica del Perú logoUP

Universidad Tecnológica del Perú

Ingeniero de Sistemas e Informática, Systems and Computer Engineering

2015 - 2021

Pursued a degree in Systems and Computer Engineering, earning a Bachelor's degree in 2021 and a professional title in 2026.

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