What if no slot is available in the candidate's window?

The workflow returns no booking — ask the candidate for a wider window, or shorten the interview duration in the code node.

Can I use a different interview length?

Yes, it's one value (45 minutes by default) in the 'Find First Open Slot' node.

HR & RecruitingStructurally Validated

Candidate Interview Scheduler

A candidate submits their availability once through a simple form. This automation checks the interviewer's Google Calendar for that window, finds the first open 45-minute slot, books it, sends a confirmation email to the candidate, and pings the interviewer on Slack — no back-and-forth scheduling emails.

Automation flow

Step 1

Candidate Form Webhook

Captures the candidate's availability window.

Step 2

Check Availability

Reads the interviewer's calendar for that window.

Step 3

Find First Open Slot

Locates the first 45-minute gap with no conflicts.

Step 4

Book Interview Slot

Creates the calendar event automatically.

Step 5

Confirm & Notify

Candidate gets a confirmation email; interviewer gets a Slack ping.

Services used

Google CalendarGmailSlack

What you'll need

| Tool | Cost | Why | |---|---|---| | n8n Cloud or self-hosted | Free tier works | Runs the automation | | Google account (Calendar + Gmail) | Free | Scheduling + confirmation emails | | Slack workspace | Free tier works | Notifies the interviewer |

What's included

No manual back-and-forth to find a time
Interview length is a single number you can change
Works with any calendar the interviewer already uses
Candidate and interviewer both notified automatically

Estimate what this could save you

Times per week

Minutes each time

Your hourly value ($)

3.6 hours/month

≈ $108/month in your time

A rough estimate based on what you enter above — not a guarantee. Actual time saved depends on your process.

Works well with this automation

Employee Time-Off Approval

Employees request time off via form; a manager approval in a sheet triggers an automatic calendar block and confirmation.

$15

Onboarding Paperwork Tracker

New hires get an auto-generated checklist, and HR gets reminded if anything's outstanding near start date.

$15

Ad Platform Lead Router

Meta/LinkedIn Lead Ads leads are instantly logged, auto-replied to, and pushed to sales on Slack.

$22

Save with the complete system: HR & Recruiting Bundle

Instead of buying separately: $98 — System: $39

View system

Questions about this template

$15one-time

Secure checkout via Polar. Delivered by email instantly.

Structurally validated: automatically checked for valid n8n format before every deploy.

Difficulty: Medium
Setup time: ~15 min
Integrations: 3
Node count: 8
Format: .json + guide