AppCheckWizard

Backend Developer
+
QA Tester

Coding, testing, monitoring, and improving processes to keep your business moving forward. Expertise in JavaScript, Python, and Exploratory Testing for mobile applications.

Certified Tester Foundation Level (CTFL) by ASTQB - ISTQB in the U.S.

How can I help?

Is my app always on?

Adding monitoring and alerts so your team can catch critical issues and quickly resolve them before they affect your customers.

Is my app working?

How about we do some functional testing on the most important parts to ensure they are doing what they are supposed to be doing?

Will my app keep working if I change things?

Setting up automated tests allows you to verify that core functionality still works every time an update is made.

Can my app scale as my business grows?

Running performance tests will offer you some answers about how many users your app can safely handle.

Is my data safe and secure?

Analysis and security questionnaires tailored to your business needs, ensuring compliance with standards, including for LGPD in Brazil.

What happened with my app?!

With expertise in investigation and Root Cause Analysis (RCA), together we can identify what happened in an incident, why it happened, and the steps to prevent it in the future.

Where have I spoken?

AtlSecCon 2026 – Fortune Tiger talk thumbnail

Fortune Tiger: A Tale of Subdomain Takeover

AtlSecCon 2026

April 2026

Slides

More talks to come!

What have I worked on?

Screenshot of the Best Destinations website

Best Destinations

Front-end Sample, containing an usable hamburger menu, carousel and a diagonal section.

Made with HTML + Pure CSS + JavaScript

Screenshot of the NB News Digest site

GNB News Digest

A simple service providing user subscription through e-mail and daily delivery from the news published by the Government of New Brunswick.

Made with Python + Cloudflare Workers + Resend

Screenshot of the Cheapest Options running

Cheapest Options - Object Oriented Programming

A Python CLI application to find out the cheapest hotel options according to the given dates.

Made with Python + unittest

Screenshot of the Query API (Stock Prices) running

Query API (Stock Prices) - Python

Given a range of dates, query the price of stocks on opening and closing for a specific weekday.

Made with Python + unittest

Screenshot of the Reformat Dates running

Reformat Dates - Python

Challenge: given a sample array of dates, convert it to ISO format.

Made with Python + pytest

Work in Progress...

More projects to come!

Contact Me

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