Robert N. Gutierrez

@HarmonDavid

Learn, Write, and Grow as a Developer

USAJoined February 2026

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Robert N. Gutierrez's blogs

Code Journaldevcodejournal.hashnode.dev5 posts

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devcodejournal.hashnode.dev

Anatomy of a Production-Ready Scraper: Dissecting the Ulta.com Repository

Most web scraping tutorials follow a predictable path: they show you how to fetch a single page, parse one HTML element, and print it to the console. While this works for a "Hello World" example, it f

20h ago6 min read

devcodejournal.hashnode.dev

Building a Dynamic Google Shopping Feed from Etsy Data

Manual data entry kills e-commerce profitability. For Etsy sellers, maintaining a Google Shopping feed often involves a tedious cycle of exporting CSVs, reformatting columns, and uploading them to Google Merchant Center. By the time the file processe...

Feb 195 min read

devcodejournal.hashnode.dev

Prompt-to-Parser: Building a Product Hunt Scraper in 5 Minutes with LLMs

Building a web scraper usually feels like a chore. You open DevTools, hunt through nested div tags, and copy cryptic CSS classes like styles_item__jY_S2. Then, you write fragile parsing logic that breaks the moment the website updates its UI. If you'...

Feb 105 min read

devcodejournal.hashnode.dev

Defensive Scraping: Writing Resilient Selectors That Survive Site Redesigns

It’s Monday morning. You sit down with your coffee, check your logs, and see a wall of red. Your primary data pipeline, which has been running smoothly for months, just crashed with a NoneType has no attribute 'text' error. You inspect the target web...

Feb 56 min read

devcodejournal.hashnode.dev

Building a Universal Product Feed from Amazon Data with Python & Pandas

Scraping data is often only half the battle; formatting it is the other half. You might successfully extract thousands of product details from Amazon, but if that data isn't structured correctly, it's useless for downstream applications. Ad platforms...

Feb 36 min read

Robert N. Gutierrez

About

Available for

Robert N. Gutierrez's blogs

Recently published

Anatomy of a Production-Ready Scraper: Dissecting the Ulta.com Repository

Building a Dynamic Google Shopping Feed from Etsy Data

Prompt-to-Parser: Building a Product Hunt Scraper in 5 Minutes with LLMs

Defensive Scraping: Writing Resilient Selectors That Survive Site Redesigns

Building a Universal Product Feed from Amazon Data with Python & Pandas

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Robert N. Gutierrez

About

Available for

Robert N. Gutierrez's blogs

Recently published

Anatomy of a Production-Ready Scraper: Dissecting the Ulta.com Repository

Building a Dynamic Google Shopping Feed from Etsy Data

Prompt-to-Parser: Building a Product Hunt Scraper in 5 Minutes with LLMs

Defensive Scraping: Writing Resilient Selectors That Survive Site Redesigns

Building a Universal Product Feed from Amazon Data with Python & Pandas