/* I turn messy data into queryable databases and dashboards, using SQL and Claude to inform decisions. */
🔴 Not looking for opportunities
Currently an Extern @Breaking GamesPortfolio of projects that include SQL database design, data cleaning, and dashboarding. Featured work: the Breaking Games externship that produced an analytics database and a Q4 dashboard.
✅ Verified by Extern
Turn six messy CSVs into an analytics database and a Q4 dashboard that drives real business decisions. SQL + Claude.
Launched the app, reaching 2,000 downloads/users. Over R$100k BRL paid in cashback to partners. Now with 99 stores across 18 states and 50 cities!
I turn messy data into queryable databases and dashboards, using SQL and Claude to inform decisions.
I am Mateus Santana, a sophomore focused on Artificial Intelligence. I work on SQL and database architecture tasks, including a Breaking Games externship where I converted messy CSVs into an analytics database and built a Q4 dashboard using SQL and Claude.
Externships
SQL & Database Architecture Externship with Breaking Games
Breaking Games
Experience
Senior Software Engineer
Extern Inc. · Current
Senior React Developer
Nyla. · Jan/2023 - April/2023
Senior Software Engineer
Stone Co. · May/2021 - Dec/2022
Senior Software Engineer
Sallve · Jul/2020 - Apr/2021
Senior Software Engineer
Doris · Feb/2019 - Mar/2020
Senior Software Engineer
iFood · Jan/2018 - Oct/2018
Software Engineer
Netshoes · Aug/2017 - Jan/2018
Software Engineer
Universo MW8 · Fev/2016 - Aug/2017
Software Developer
Inovatio Digital · Aug/2014 - Feb/2016
Software Developer
ZCR Informática · May/2013 - Jul/2014
Education
UNIME
Certificate in IT · Class of 2015
SENAI Cetind
Web Developer · Class of 2013
Skills
✅ Verified by Extern · ⏱️ In progress
Turn six messy CSVs into an analytics database and a Q4 dashboard that drives real business decisions. SQL + Claude.
The externship worked with six raw data sources and a supplied SQLite database to create an analytics-ready environment. The work connected to the prebuilt database, ran exploratory SQL supported by Claude, and captured queries, data checks, decisions, and next steps. It also documented learnings about keys, joins, and summary tables and recorded plans to continue developing the schema and aaaaaaa
I connected to a prebuilt SQLite database, ran exploratory SQL to surface data issues, documented queries and data checks in a shared doc, and designed a schema with keys, joins, and summary tables to support product reorder analysis. aaa
The module presented six raw data sources and a prebuilt SQLite DB. I connected to the database, ran exploratory SQL with Claude's help, and produced a shared doc capturing queries, data checks, decisions, and defined next steps.
The work summarized the Project 2 experience, noted major learnings about keys, joins, and summary tables, and recorded plans to continue the practicum the next day.
Outlet das TIntas · Dec 2022
Launched the app, reaching 2,000 downloads/users. Over R$100k BRL paid in cashback to partners. Now with 99 stores across 18 states and 50 cities!
Launched the app, reaching 2,000 downloads/users. Over R$100k BRL paid in cashback to partners. Now with 99 stores across 18 states and 50 cities!