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Hello I'm Juan

Data Engineer Computer icon

Applied AI

👋 Hi! I am Juan

Senior Machine Learning Engineer

Senior Machine Learning Engineer

Based in Mexico City, Mexico.

Six years of data pipelines and ML systems, most of them inside banks. // Now building RAG and multi-agent tools at LexisNexis.

Let's get down to business

Nothing really worth having

is easy to get

- Aisha Tyler

My services

What I actually work on

Memoji of Juan

Data Engineering

Pipelines in Python, Scala and PySpark, usually moving more data than fits on one machine. Stream processing with Flink and Kafka. I design and run the SQL side too, and ship the whole thing on AWS with GitHub Actions and Docker.

PYTHONSCALASPARKPYSPARKKAFKAFLINKSQLAWS

Machine Learning & GenAI

Supervised and unsupervised models that make it to production, not just to a notebook. RAG pipelines from document ingestion through vector indexing to retrieval, and multi-agent systems that run document workflows on their own.

RAGLLM INTEGRATIONOPENAI APIPANDASNUMPYMODEL DEPLOYMENT

Full-Stack & Leadership

Angular and TypeScript front-ends over PHP, Laravel, Flask and Node services. I lead teams of data engineers, ML engineers and data scientists, right now spread across Mexico City, London and Shanghai, so a good part of the job is keeping three time zones in sync.

ANGULARTYPESCRIPTPHPLARAVELFLASKAGILE / SCRUM

// MY PROJECTS

Selected builds

Old front-end side projects, from before I moved into data. Still here because I like how they turned out.

juanfuentes-code / Pottergram

Pottergram, a social feed interface built with Svelte

Pottergram

An Instagram clone for the Harry Potter crowd. Posts, stories, likes and profile cards, all of it client side.

SVELTEJAVASCRIPTCSS

juanfuentes-code / WebComponentProject

Product page built from reusable Web Components

Web Component Store

A product page where every piece is a custom element. Gallery, detail panel and buy button are each their own component, no framework involved.

WEB COMPONENTSJAVASCRIPTHTML5

Curious about the process?

$ visit my Github ↗

About me

What's on Juan's World?

Certifications

M.Eng. in Applied Artificial Intelligence from Tecnológico de Monterrey, finished in 2025, on top of a B.Eng. in Computer Software Engineering. Plus a pile of certificates from Stanford Online, AWS, MIT and Google. Full list in Credentials.

Jobs & Life

Started out in web and IT, ended up in data. I'm at LexisNexis now; before that HSBC, BBVA México and Innovaciones 20Veinte.

Networking

My team spans Mexico City, London and Shanghai. Always learning, never settle. Lately that means multi-agent systems and retrieval-augmented generation.

Gaming

Not much free time left, but I still play when I can. Want a match? PSN, Gamertag & Steam: john024x

Dedicated. Persistent. Passionate. Multitalented.

Visit my Instagram

// EXPERIENCE

6+ YEARS IN PRODUCTION

DATA ENGINEERING · MACHINE LEARNING · APPLIED AI

Senior Data Engineer & Machine Learning Engineer

LexisNexis · Mexico City / London / Shanghai

FEB 2025 — PRESENT

Build multi-agent AI systems that take document workflows off people's hands.
Run RAG pipelines over legal and corporate document repositories: ingestion, vector indexing, retrieval.
Configure Apache Flink in Java, with POJO schemas and Jackson (de)serialization so the stateful stream jobs stay type-safe.
Build the Angular dashboards where stakeholders read the numbers in real time.

FLINKJAVARAGLLMANGULAR

Data Manager Analyst

HSBC · Mexico City

DEC 2024 — FEB 2025

Ran data governance and quality checks for banking operations and compliance systems.
Joined up data across business units and built the analytical frameworks risk management asked for.

DATA GOVERNANCECOMPLIANCESQL

Senior Data Engineer

BBVA México · Mexico City

OCT 2022 — DEC 2024

Led teams of data engineers, ML engineers and data scientists through Agile cycles.
Processed data at volume with Scala, Python, PySpark and Pandas, including the preprocessing that fed the Generative AI work.
Integrated APIs and LLM components into credit scoring and credit card placement workflows.
Built risk, compliance and credit models, plus the Angular front-ends business users reached them through.

SCALAPYSPARKGENERATIVE AICREDIT RISKANGULAR

Full-Stack & Data Engineer

Crossroads — Fulltimeforce · Mexico City

MAY 2022 — OCT 2022

Reviewed the data flows across an e-commerce platform, start to finish, to keep the numbers honest.
Wrote the Angular front-end and the PHP back-end, plus REST APIs and third-party integrations.

ANGULARPHPREST APIs

Data Engineer & Technical Project Lead

Innovaciones 20Veinte · Mexico City

MAR 2020 — MAY 2022

Technology coordinator and project lead on three national projects.
Led a national e-commerce platform in Angular and PHP, from requirements through to deployment.
Designed an inventory prediction model and audited the pipelines behind it.
Tuned the databases and kept production running.

PHPANGULARSaaSFORECASTING

LANGUAGES SPANISH NATIVE ENGLISH PROFESSIONAL WORKING

CREDENTIALS

15 VERIFIED RECORDS

TEC

DEGREE

Maestría en Inteligencia Artificial Aplicada

TECNOLÓGICO DE MONTERREY ↗ · MASTER OF ENGINEERING

CÉDULA PROFESIONAL 15168043 ↗ SEP · EXP. 22 SEP 2025

SEP 2023 - DEC 2025

UVM

DEGREE

Ingeniería en Sistemas Computacionales

UNIVERSIDAD DEL VALLE DE MÉXICO ↗ · INGENIERÍA DEL SOFTWARE

CÉDULA PROFESIONAL 13515649 ↗ SEP · EXP. 10 JUN 2023

🏅 Premio CENEVAL de Excelencia ↗

AUG 2018 - DEC 2022

DIPLOMADOS

MIDE

DIPLOMA

Diplomado de Matemáticas y Estadística

MUSEO INTERACTIVO DE ECONOMÍA · VER CERTIFICADO (PDF) ↗

AUG 2025 - DEC 2025

UNAM

CERTIFICATE

Data Science

UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO ↗

APR 2023 - JAN 2024

TEC 02

Alta Especialidad: Inteligencia Artificial y Aprendizaje AutomáticoABR 2024

Alta Especialidad: Ciencia de DatosENE 2024

$

COURSERA 05

Supervised Machine Learning: Regression and Classification (ML Specialization)MAR 2026

Advanced Learning Algorithms (ML Specialization)APR 2026

Unsupervised Learning, Recommenders, Reinforcement Learning (ML Specialization)APR 2026

Supervised Machine Learning: Regression and ClassificationMAR 2024

Foundations: Data, Data, EverywhereDEC 2022

$

STANFORD 01

XCS221 · Artificial Intelligence: Principles and TechniquesDEC 2024

$

AWS 01

Generative AI Foundations — IMMUNE Technology InstituteJUN 2025

$

MIT 01

NanoLab — MIT Professional EducationMAY 2025

$

GOOGLE 01

Desarrollo de Apps MóvilesDIC 2021

$