How Windmill uses Merge to power HRIS integrations
What is Merge?
Merge is a unified API platform that powers connections to HR and payroll systems. Instead of building separate integrations for each HRIS, Windmill uses Merge’s single API to connect to multiple systems reliably and securely.
How Windmill Uses Merge
Merge handles the complexity of connecting to different HRIS platforms behind the scenes:
- Standardized authentication through Merge’s secure OAuth flow or API credentials for consistent setup across HRIS providers
- Employee directory sync pulling names, emails, job titles, manager relationships, and org structure
- Automatic updates as employees join, leave, or change roles in your HRIS
- Read-only access so your HRIS remains the system of record—Windmill never writes data back
When you connect an HRIS to Windmill, Merge authenticates with your provider, syncs employee data, and keeps Windmill up to date on a regular schedule.
Benefits of Merge-Powered HRIS Integrations
Reliable connections without maintenance. Merge manages API changes and platform updates so your Windmill integration stays working without interruption.
Enterprise-grade security. Merge provides SOC 2 Type II compliance, ensuring your employee data is protected throughout the sync process. Data is encrypted in transit and at rest.
Limited, intentional data access. Windmill only syncs the employee fields needed for performance management—name, email, job title, manager relationships, and org structure. Sensitive data like compensation, tax information, and personal demographics are not synced.
Faster setup for any HRIS. Merge’s standardized flow means connecting your HRIS takes minutes, regardless of which provider you use.