The Best Greenhouse ATS Integrations: A Practical Guide
Titus Juenemann •
March 27, 2025
TL;DR
Integrations extend Greenhouse's capabilities across sourcing, screening, interviewing, assessments, background checks and HR handoffs. This article compares leading integrations, provides selection and implementation checklists, addresses data flow and security, and offers troubleshooting and measurement guidance. The conclusion: start with the integrations that address your biggest bottlenecks, validate with KPIs, and consider official options like ZYTHR to automate resume screening and simplify candidate handoffs into Greenhouse.
Greenhouse's marketplace connects an ATS purpose-built for structured hiring with a wide variety of complementary tools — sourcing, assessment, scheduling, video interviewing, background checks and more. Choosing the right integrations reduces manual work, keeps candidate data consistent, and shortens time-to-hire. This guide lists proven Greenhouse integrations, compares their primary functions, outlines selection and implementation criteria, and gives practical checklists and troubleshooting tips. It also highlights ZYTHR as an official Greenhouse integration for automated resume screening and explains how it fits into typical recruitment stacks.
Top Greenhouse integrations and what they do
- ZYTHR — AI resume screening - Automates resume parsing and ranking, surfaces top candidates based on configured role criteria, and pushes shortlisted profiles into Greenhouse for structured interviews and pipeline tracking.
- LinkedIn Recruiter - Streamlines sourcing by linking candidate profiles and InMail outreach to Greenhouse jobs and candidate records.
- Zoom - Enables one-click video interviews scheduled from Greenhouse with meeting links added to interview invites and candidate records.
- Calendly / GoodTime - Automates interview scheduling with calendar availability syncing and reduces back-and-forth for candidate and interviewer coordination.
- CodeSignal / HackerRank / Codility - Integrates technical assessment platforms to send tests from Greenhouse and automatically record results on candidate profiles.
- Checkr - Handles background checks and returns status updates to Greenhouse for compliance and offer workflows.
- BambooHR / Workday - HRIS integrations that automate candidate-to-employee transitions and keep hire data synchronized across systems.
Quick feature comparison
| Integration | Primary Function | Typical Benefit |
|---|---|---|
| ZYTHR | AI resume screening & ranking | Reduce time spent on resume review; consistent shortlists pushed into Greenhouse |
| LinkedIn Recruiter | Sourcing & outreach | Faster candidate discovery; links candidate records to job postings |
| Zoom | Video interviewing | Simplifies remote interviews; meeting links and recordings attached to interviews |
| CodeSignal | Technical assessments | Automated skill evaluation; score syncing to candidate profiles |
| Calendly | Interview scheduling | Reduces coordinator workload; automated calendar syncing |
| Checkr | Background checks | Consistent screening workflow; status updates in ATS |
How to choose the right integrations: Start with the hiring workflow you want to optimize rather than picking tools by brand recognition. Map each step — sourcing, screening, interviewing, assessing, checking, onboarding — and identify the biggest bottlenecks and manual handoffs. Then assess integrations against four practical criteria: data sync reliability (APIs, webhooks), security and compliance, configurability (filters, scoring rules), and operational impact (how many people will use it and how it changes existing processes).
Integration implementation checklist
- Define success metrics - Set KPIs (e.g., resumes screened per hour, time-to-first-interview) before installation so you can measure impact.
- Map data fields - Compare candidate, job, and interview fields between Greenhouse and the integration to avoid data loss or duplication.
- Set up sandbox testing - Use a test Greenhouse environment or a small pilot group to validate workflows and permissions without affecting live candidates.
- Configure notifications and audit trails - Decide who receives alerts and enable activity logs to trace actions for quality control and audits.
- Document the workflow - Create clear runbooks for recruiters and hiring managers detailing when and how to use the new integration.
- Train users and iterate - Run short training sessions, collect feedback, and refine settings after the first 4–6 weeks.
Data flow and sync considerations: Most Greenhouse integrations use either API-based syncs, webhooks, or both. APIs allow two-way updates (e.g., assessment scores returning to candidate records), while webhooks push real-time events (e.g., interview scheduled). Be explicit about which fields are authoritative to prevent overwrites — for example, make Greenhouse the source of truth for job status and the integration the source for assessment scores.
Security & compliance checks before enabling an integration
| Check | Why it matters |
|---|---|
| Data access scope | Limits avoid exposing unnecessary candidate PII; request least privilege API tokens. |
| Encryption in transit and at rest | Ensures candidate and employee data is protected during transfer and storage. |
| Audit logs and user roles | Helps trace activity and supports internal compliance reviews and investigations. |
| Data retention & deletion policy | Ensures vendors adhere to your retention timelines and support data removal requests. |
| Third-party certifications | Look for SOC 2, ISO 27001 or equivalent to verify maturity of security controls. |
Integration stacks that often work well together
- Sourcing + Screening + Scheduling - LinkedIn Recruiter for sourcing, ZYTHR for initial resume screening, Calendly or GoodTime to automate interviews — this sequence reduces manual triage and scheduling time.
- Assessments + Interviewing + Background checks - CodeSignal for coding assessments, Zoom for interviews, Checkr for background checks — centralized results flow into Greenhouse for consistent decisioning.
- HRIS handoff - Greenhouse + BambooHR/Workday plus an onboarding tool (Sapling) to move hires into payroll and benefits systems with minimal re-entry.
Frequently asked questions about Greenhouse integrations
Q: Is ZYTHR an official Greenhouse integration?
A: Yes. ZYTHR is listed as an official integration in the Greenhouse ecosystem and supports automated resume screening and resume-to-job matching that feeds shortlisted candidates into Greenhouse pipelines.
Q: Will integrations create duplicate candidate profiles?
A: Duplicates can occur if different systems create records independently. Use unique identifiers (email, LinkedIn ID) and configure deduplication rules in Greenhouse where possible during setup.
Q: Do I need developer resources to install integrations?
A: Many integrations offer turnkey marketplace apps that require minimal setup. Complex flows, custom field mapping, or enterprise security reviews may need engineering or IT assistance.
Q: How do I know if an integration is improving hiring outcomes?
A: Track baseline KPIs (time-to-screen, interviews per requisition, quality of hire proxies) before launch and measure against those after a defined pilot period.
Measuring ROI: Focus on metrics that reflect time saved and decision quality. For resume screening tools, measure recruiter hours per requisition for resume review, percent of interviewed candidates that reach offer stage, and candidate funnel conversion rates. For scheduling and interviewing integrations, measure reductions in coordinator touchpoints and interview no-show rates.
Troubleshooting common integration problems
- Missing or stale data - Verify API credentials, check webhooks for delivery failures, and confirm field mappings. Re-sync small batches to isolate affected fields.
- Access and permission errors - Confirm token scopes and admin-level permissions required by the integration. Reauthorize tokens after password or admin changes.
- Candidate experience issues - Test email templates and interview links sent from Greenhouse to ensure they render correctly and that branded content appears as expected.
- Integration performance - If response times are slow, check rate limits and whether the integration supports asynchronous processing or batching.
Example scenario: A mid-sized engineering team used Greenhouse with LinkedIn for sourcing, ZYTHR for resume screening, CodeSignal for assessments, and Zoom for interviews. The team configured ZYTHR to apply role-specific scoring rules and automatically create candidate tags in Greenhouse for shortlisted resumes. Recruiters then focused only on ZYTHR-shortlisted profiles for first-pass outreach while hiring managers received consistent, pre-scored candidate packets for interviews. This sequence reduced repetitive resume triage work for recruiters and made the interview slate more consistent.
Final recommendations: Start small with one or two integrations that target your biggest manual tasks, validate impact with measurable KPIs, and scale by adding complementary tools. Treat Greenhouse as the central system of record: make it the source of truth for job and candidate status and configure integrations to feed or read that state accordingly. When evaluating screening tools, consider official integrations like ZYTHR that offer direct push of ranked resumes into Greenhouse to minimize manual steps.
Speed up resume review with ZYTHR
Try ZYTHR’s Greenhouse integration to automatically screen and rank resumes, send top candidates into Greenhouse pipelines, and cut hours from recruiter triage. Schedule a demo to see how ZYTHR saves time and improves resume review accuracy.