Jesús Efrén Cabrera Ortega

Full Stack Developer & Data Scientist

Programador, pianista aficionado y siempre listo para una partida de cualquier juego de mesa.

Profile Summary

8 years as a Full-Stack Developer, designing, programming, integrating, and supporting applications across modern tech stacks: Spring Boot & React, Node.js (Express.js) & Angular, and Python (FastAPI / Flask) & React.

6 years of hands-on experience developing serverless architectures for high-throughput data processing on the AWS Cloud (Lambda, API Gateway, SQS, SNS, Step Functions, Secrets Manager, S3, DynamoDB, Aurora DB).

2.5 years of experience as a Data Scientist, building machine learning models, statistical analyses, and interactive data visualizations primarily with Python and R.

Technical Skills

Languages & Frameworks

Python (FastAPI, Flask) JavaScript / TypeScript React Angular Java (Spring Boot) Node.js (Express.js) R PHP (Laravel)

Cloud, DevOps & Data

AWS Serverless (Lambda, API Gateway) SQS & SNS Step Functions CloudWatch Docker Git / GitHub / Azure DevOps Snowflake Event-Driven Architecture

Databases

DynamoDB PostgreSQL Aurora DB MySQL DocumentDB SQL Server

Data Science, Methodologies & OS

scikit-learn & TensorFlow D3.js Data Viz Jupyter Notebooks GDPR Compliance Scrum & Kanban Linux / Ubuntu, macOS, Windows

Professional Experience

Full Stack Developer

AstraZeneca · Guadalajara, Mexico

Jan 2025 – Present

Served as the primary resource in migrating a legacy monolithic system (Java 8 / AngularJS) to a modern Python (FastAPI) and React architecture, significantly improving maintainability and remediating critical security vulnerabilities. The system orchestrates routing configuration of medical studies across institutes, research laboratories, and pharmaceutical companies.

Contributed to feature development and operational maintenance of the medical study ingestion pipeline, built on AWS Step Functions and Python Lambda functions, incorporating robust validation logic and team-based routing while monitoring performance and debugging errors via CloudWatch metrics and logs. Designed and implemented a dedicated module to generate legal contracts for receiving medical studies.

Python (FastAPI) React Java & Spring Boot AWS Step Functions Lambda Aurora DB Snowflake CloudWatch SNS & SQS

Full Stack Developer

HP Inc · Ensenada, Mexico

Oct 2022 – Nov 2024

Architected and developed an in-house centralized repository leveraging AWS cloud services to process and persist user consent data from global customers, guaranteeing strict GDPR compliance. Monitored serverless operations and diagnosed production incidents utilizing AWS CloudWatch.

Python Java & Spring Boot Node.js AWS Lambda DocumentDB SQL Server SNS / SQS GDPR Compliance

Data Engineering

TechHolding – Fender · Ensenada, Mexico

Jun 2022 – Oct 2022

Implemented an end-to-end user interaction tracking system for an Angular web application, integrating Avo, Segment, and AWS Lambda functions to capture, validate, and analyze customer behavioral event streams.

Python TypeScript Angular Avo Segment AWS Lambda

Full Stack Developer

Softtek – HP Inc · Ensenada, Mexico

Feb 2020 – Jun 2022

Designed and deployed an event-driven architecture to store and analyze personal user data on AWS with high volume throughput. Contributed architecture proposals, led peer review processes, and collaborated within an Agile Scrum environment across multi-disciplinary teams.

Python Java & Spring Boot Node.js DynamoDB PostgreSQL Step Functions Apigee Azure DevOps

Full Stack Developer

Freelance – Stop Extinctions · Ensenada, Mexico

Dec 2019 – Dec 2021

Created interactive web visualizations mapping the geographical distribution of endangered species using Angular on the frontend and Python with AWS Lambda & API Gateway on the backend.

Angular Python AWS Lambda API Gateway

Full Stack Developer

Freelance – AdLab · Ensenada, Mexico

Feb 2020 – Sep 2021

Fullstack development with Spring Boot (Java) and Angular (TypeScript), building features, containerizing environments with Docker, and conducting code peer reviews.

Java (Spring Boot) Angular TypeScript Docker

Full Stack Developer

Softtek – Cinépolis · Ensenada, Mexico

Mar 2020 – Aug 2020

Developed features within the PIMCore Framework (PHP, HTML, JavaScript, Angular), integrating backend services with frontend components and monitoring logs via Kibana.

PIMCore PHP JavaScript Angular Docker Kibana

Full Stack Developer

Softtek – Internal Project · Ensenada, Mexico

Sep 2019 – Mar 2020

Programmed business logic in Java (Spring Boot) and Angular, establishing unit testing suites with Mockito and adhering to strict test-driven quality guidelines.

Spring Boot Angular Mockito

Full Stack Developer

Universidad Nacional Autónoma de México (UNAM) · Ensenada, Mexico

Jan 2018 – Dec 2018

Engineered from ground up to production the entire administrative system for the Symposium of Nanoscience and Nanomaterials (2019 & 2020 editions), managing attendee registration, scientific abstract submissions, workshop enrollment, and dynamic event scheduling.

Laravel (PHP) MySQL RESTful API

Machine Learning Specialist

Grupo de Ecología y Conservación de Islas (GECI) · Ensenada, Mexico

Sep 2017 – Sep 2019

Developed predictive machine learning models and interactive web visualizations (D3.js, React) to analyze island ecological trends and guide field conservation actions. Containerized model execution using Docker and built RESTful microservices with Flask.

Python (Flask) React D3.js scikit-learn Jupyter Docker pytest

Education

2015 – 2017

Master’s in Nanoscience

Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE)

2015 – 2017

Computer Engineering

Universidad Autónoma de Baja California (UABC)

2011 – 2015

Nanotechnology Engineering

Universidad Autónoma de Baja California (UABC)

Certifications & Languages

Certifications

AWS Certified Developer - Associate
Linux Academy · 2023
Snowflake Fundamentals (4-Day)
Pearson · 2025

Languages

Spanish: Native speaker
English: Fluent · Level C1 (Linguatec 2019)
German: Intermediate · Level B1 (UABC 2017)

Scientific Publications

Kotolevich, Y.; Martynyuk, O.; García Ramos, J.C.; Cabrera Ortega, J.E.; et al. Nanostructured silica-supported gold: Effect of nanoparticle size distribution and electronic state on its catalytic properties in oxidation reactions. Catalysis Today, Vol. 366, 2021, pp. 77–86.

doi:10.1016/j.cattod.2020.08.028

Kotolevich, Y.; Kolobova, E.; Pestryakov, A.; Cabrera Ortega, J.E.; et al. Gold and Silver Catalysts for Liquid Phase n-Octanol Oxidation: Effect of Promoters. Current Organic Synthesis, 14: 323, 2017.

doi:10.2174/1570179413666161031113854

Kotolevich, Y.; Kolobova, E.; Mamontov, G.; Khramov, E.; Cabrera Ortega, J.E.; et al. Au/TiO2 catalysts promoted with Fe and Mg for n-octanol oxidation under mild conditions. Catalysis Today, Vol. 278, Part 1, 2016, pp. 104–112.

doi:10.1016/j.cattod.2016.05.002

Kotolevich, Y.; Kolobova, E.; Khramov, E.; Cabrera Ortega, J.E.; et al. Identification of Subnanometric Ag Species, Their Interaction with Supports and Role in Catalytic CO Oxidation. Molecules 2016, 21, 532.

doi:10.3390/molecules21040532

Martynyuk, O.; Kotolevich, Y.; Vélez, R.; Cabrera Ortega, J.E.; et al. On the High Sensitivity of the Electronic States of 1 nm Gold Particles to Pretreatments and Modifiers. Molecules 2016, 21, 432.

doi:10.3390/molecules21040432