David Bartolomei-Guzmán
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Posts, case studies, and implementation notes on data engineering, AI, and software work worth writing down.

April 5, 2026 · 7 min read
Engineering Machine Learning Infrastructure

Migrating from RunPod to Local Whisper Inference with MLX and a DGX Spark

In my previous article, I described how we use OpenAI’s Whisper model to transcribe radio and TV broadcasts for Monitorea, our media monitoring platform. At the …

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October 1, 2025 · 6 min read
Engineering Machine Learning Product

Launching Monitorea: AI Agents for Broadcast Media Intelligence

A year ago I published a case study analyzing Share of Voice across Puerto Rico’s AM radio stations using Whisper transcriptions. The article ended with a long list …

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LLMs Alternatives for Software Development in Regulated Industries
October 9, 2024 · 3 min read
Engineering Productivity

LLMs Alternatives for Software Development in Regulated Industries

By the time you’re reading this, the landscape of Large Language Models (LLMs) has likely evolved further, but one thing remains constant: their usage in software …

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Case Study: Leveraging Machine Learning for Spoken Media Analysis – Share of Voice of Puerto Rico’s Political Figures in 2024
October 1, 2024 · 8 min read
Analytics Data Engineering Machine Learning

Case Study: Leveraging Machine Learning for Spoken Media Analysis – Share of Voice of Puerto Rico’s Political Figures in 2024

This is the first in a series of articles where I share my findings exploring Speech-to-Text (STT) ML models to transcribe and analyze spoken content in news media. In …

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Challenges and Benefits of the Analytics Engineer Role
April 22, 2024 · 5 min read
Analytics Data Engineering

Challenges and Benefits of the Analytics Engineer Role

The Analytics Engineer is a relatively new role that emerged during the “Modern Data Stack” trend of the last 5-10 years and was ”formalized” by dbt Labs. In this …

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February 11, 2024 · 4 min read
Engineering

Local Dev with Astro CLI and Remote Databases

When working with Astronomer and Airflow for data processing and ETL tasks, it’s common to encounter scenarios where you need to interact with databases hosted within a …

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December 1, 2021 · 2 min read
Engineering

Managing Python versions and environments in macOS

I have been using Python for a while now, and managing dependencies and versions always has been a pain. macOS still comes with Python2.7, but most dev works have moved …

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December 6, 2020 · 2 min read
Engineering

How to easily migrate your Brew packages in macOS

Recently I decided to do a clean install on my personal Mac at the same time and start optimizing my dev setup and overall productivity. The first step towards this goal …

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October 26, 2020 · 3 min read
Engineering

From Software to Data Engineering

I started to work as a data engineer when me and my team were tasked to automate some data sets and reports for the businesses/brands our team was supporting. The …

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