Senior Patch Research Engineer

Overview

Senior Patch Research Engineer for the Patch Management product team at Qualys, focused on researching and maintaining an accurate Windows third-party patch catalog.

What you'll do

• Research, author, and maintain patch metadata for third-party Windows applications.
• Identify new software releases, security updates, and version changes from vendor sources and advisories.
• Map vendor releases to structured metadata including version strings, download URLs, detection logic, and installation parameters.
• Track end-of-life (EOL) dates and update catalog entries accordingly.
• Document and validate silent installation parameters and reboot behavior for various installer types.
• Manually test patch installation in sandbox environments and verify detection logic post-install.
• Research Windows detection methods using registry keys and file-based version attributes.

What you'll need

• 4-5 years of experience in Windows systems administration, patch management, or software packaging.
• Strong understanding of Windows OS internals including registry structure and installation scopes.
• Hands-on experience with Windows patching tools such as WSUS or SCCM/ConfigMgr.
• Experience with manual patch installation, including msiexec.exe switches and repackaging.
• Solid understanding of installer technologies and their silent install mechanisms.
• Ability to trace installation artifacts to corresponding registry keys.
• Experience validating detection logic against installs and upgrades.

Nice to have

• Experience building or maintaining a software patch catalog.
• Knowledge of Windows Installer (MSI) internals such as product codes and upgrade codes.
• Knowledge of ARM64 Windows platform nuances and multi-architecture software distribution.
• Scripting experience in Python or PowerShell.

Details

• Location: Pune.