HRCritic

HR Software Integration Checklist: Questions to Ask Every Vendor

By the HRCritic editorial team · 7 min read · Updated

'Yes, we integrate with that' can mean anything from a fully supported two-way sync to a CSV export. Use this HR software integration checklist to check data flows, field mapping, sync frequency, security and support before you sign. Ask vendors for documentation and verify each connection during your trial.

1. Map your data flows first

Before asking vendors anything, sketch which data needs to move between systems and in which direction.

  • Example: ATS → HRIS when a candidate is hired (name, start date, title, compensation).
  • HRIS → payroll for new hires, changes and terminations.
  • HRIS → benefits, learning and identity/SSO tools.
  • Decide which system is the 'source of truth' for each field.

2. Know the types of integration

  • Native integration: built and maintained by one of the vendors. Usually the most reliable — ask who maintains it.
  • Third-party connector or unified API: a middleware service links the systems. Ask who supports it when it breaks, and whether it costs extra.
  • Open API: you or a partner build the connection. Flexible, but you own the maintenance.
  • File-based (CSV/SFTP): scheduled file transfers. Workable for some payroll and benefits feeds, but check error handling.

3. Questions to ask every vendor

  • Is this integration one-way or two-way? Which exact fields sync?
  • How often does it sync — real time, hourly, nightly?
  • Who built it and who supports it? What is the support process when it fails?
  • Is it included in my plan or an extra fee?
  • How many customers actively use this specific integration?
  • What happens to records that fail to sync — is there an error log or alert?
  • Can you show me documentation or a live demo of this integration, not a slide?

4. Test it during the trial

  • Create a test hire in the ATS and confirm it appears correctly in the HRIS and payroll.
  • Change a record (title, pay rate, address) and check it updates downstream.
  • Terminate a test employee and confirm access and payroll changes follow.
  • Deliberately cause an error (missing field) and see how it's reported.

5. Plan for security and ownership

  • Confirm integrations use secure authentication (such as OAuth or scoped API keys), not shared passwords.
  • Limit each integration to the data it needs.
  • Assign an internal owner who monitors integrations and is notified of failures.
  • Get integration commitments into the contract or order form.

6. Use HRCritic to shortlist, then verify

Our directory and AI advisor can help you build a shortlist based on your current tools, but always confirm integration details directly with each vendor before you buy.

Build your shortlist

Describe your company and current tools, and our AI advisor will suggest platforms from the HRCritic directory.

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Sources

This guide is general information, not legal advice. Check requirements for your location with qualified counsel.

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