Senior VB5 Developer (VB5/VB6, COM, ActiveX, SQL Server)

The Opportunity

Join a US client's engineering team as their senior Visual Basic developer, keeping a mature business application running and moving forward: the production issues that have to be fixed, the calculations that have to be right, and the processes nobody else can figure out. The application is built in VB5/VB6 on a SQL Server database. Fully remote from Latin America, US business hours, 18 month contract.

What You'll Bring

• Advanced VB5 in production. Several years of shipping, supporting and debugging real VB5 applications, with VB6 exposure a plus. You can read a large codebase you did not write and find the business rule inside it.
• COM and ActiveX depth. You know how components are registered and versioned, what binary compatibility does, and how to track down the DLL and OCX problems that break callers.
• Data access against SQL Server with ADO, and ideally DAO or RDO, plus working T-SQL. You can trace a wrong number from a form into the stored procedure behind it and fix the data safely.
• Experience with third party OCX controls and Crystal Reports, including getting them installed and running on a current version of Windows.
• The ability to turn a short verbal brief into scoped, finished work. Documentation is thin or missing, requirements often arrive as a conversation, and you fill in the rest yourself. You share progress every day without being chased.
• Skilled AI use that streamlines your work rather than doing it for you. You can walk through and defend everything you submit.
• Excellent written and verbal English.

What Sets You Apart

• Experience moving VB5/VB6 systems to .NET, including reading VB5/6 to extract business rules and proving the new version behaves like the old one.
• Hands on C# or VB.NET experience.
• Source control and build discipline in a legacy codebase: Git, repeatable builds and a clean installer.
• Experience keeping VB6 applications stable on current versions of Windows.
• A background in warehousing, distribution, or logistics.