Come work at a place where innovation and teamwork come together to support the most exciting missions in the world
About the Role
Qualys is looking for a detail-oriented Windows Patch Management Catalog Researcher to join the Patch Management product team. In this role, you will be responsible for building and maintaining a comprehensive, accurate patch catalog covering a wide range of third-party Windows software.
Key Responsibilities
Patch Catalog Research & Authoring
Research, author, and maintain patch metadata for third-party Windows applications across a broad software catalog.
Identify recent software releases, security updates, and version changes from vendor sources, changelogs, and security advisories (CVE/NVD).
Map vendor releases to structured metadata schemas, including version strings, download URLs, detection logic, and installation parameters.
Track software End-of-Life (EOL) dates and update catalog entries accordingly.
Windows Patching & Installation Knowledge
Document and validate silent installation parameters for diverse installer types (MSI, NSIS EXE,



InnoSetup, WiX, etc.).
Research and verify correct msiexec.exe flags, NSIS /S switches, and equivalent silent/unattended arguments per software.
Determine accurate reboot behavior (Yes / No / Maybe) per installer type and document exit codes (success, reboot-required).
Manually test patch installation in sandbox environments and verify detection logic post-install.
Detection Logic & Registry Research
Research and validate Windows registry keys used to detect installed software versions (Uninstall hive, vendor-specific keys, DisplayVersion, etc.).
Identify and document file-based detection paths (FileVersion, ProductVersion attributes on key executables).
Understand the difference between 32-bit and 64-bit registry views (WOW6432Node) and apply correct detection architecture per installer variant.
Validate detection logic against fresh installs and upgrades across supported Windows versions.
Backend

📌 Senior Patch Research Engineer (Pune)
🏢 Qualys
📍 Pune