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Paulo Vitor S.
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Paulo Vitor S.

Data Migration & Legacy App Modernization | SQL Server, Access, MCP

Old databases and desktop software nobody can open, fix or migrate anymore: SQL Server, Microsoft Access, FoxPro and Delphi or VB6 apps with no source code. I get the data out, move it somewhere modern, and can connect it to AI through custom MCP servers. Usually the vendor is gone or won't help, the original developer left years ago, and the last freelancer said it can't be done. The data is almost always still there. A recent case: a car rental company whose database was locked inside their vendor's software. I got the full database out remotely, delivered it as clean spreadsheets, and they came back and paid for a second phase. What I do: • Legacy database extraction and migration: SQL Server, Access, FoxPro and vendor-locked back ends moved to Excel, PostgreSQL or a modern stack • Fixes and changes to old Windows apps (Delphi, VB6, C++, .NET) when the source code is lost. Recently: reverse-engineered and extended a Delphi point-of-sale system for a laundry business. • Recovery of files in proprietary or corrupted formats that no software opens anymore • MCP servers and Claude integrations that let AI read and work with your own systems and data • Automated extraction from websites and portals with no export or API. 29 of my data tools are public on the Apify Store. How I work: The first look is free. Send the files and within a day you know if it is solvable and what it costs. You see it working before you release payment. Your files stay on my machine and go nowhere else. I sign an NDA before you send anything and delete everything whenever you ask. I work entirely in writing, no calls, so every decision stays on record. Send me the database, file or program nobody else will touch, and I'll tell you straight whether it's solvable.

🇧🇷Florianopolis, Brazil$30/hr100% JSSSince Apr 2026

Earnings and projects

MRR
$170

Last 6 months ÷ 6

World#118,886 / 412k
🇧🇷Country#1,416 / 4,647
Revenue, last 30 days
$0

Last 6 months: $1k

Total earnings
$1k
World#391,531 / 412k
🇧🇷Country#4,485 / 4,647
Per project
$345

$511 in the last 6 months

World#218,129 / 412k
🇧🇷Country#2,404 / 4,647
Projects, last 6 months
2
100% fixed0% hourly
World#88,918 / 412k
🇧🇷Country#908 / 4,647
Projects in all
3
100% fixed0% hourly
World#304,140 / 412k
🇧🇷Country#3,039 / 4,647

Earnings, last 30 days

$1kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1,000$1,020$1,040$1,060Oct 9Oct 24Nov 8

Dotted: longer than usual between two readings.

Skill rankings: Top 19% in Visual Basic

Ranked by MRR among everyone on Upwork with the skill.

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  4. #172Database Development567 freelancers · 🇧🇷 #1Top 30%
  5. #198Model Context Protocol (MCP)413 freelancers · 🇧🇷 #3Top 48%
  6. #227Microsoft Access862 freelancers · 🇧🇷 #1Top 26%
  7. #265Reverse Engineering721 freelancers · 🇧🇷 #3Top 37%
  8. #467ETL1,556 freelancers · 🇧🇷 #13Top 30%