How to Build an Account Expansion Alert That Notifies You When a Target Company Starts Hiring Fast

A company that posts 2 open roles in January and 28 in March is not the same company. Budget just opened up. Headcount is growing. A buying decision is somewhere in that plan. For the rep who spots it first, it's the most actionable signal in B2B sales. The problem: most teams find out about it months later — or never. A rep manually checks LinkedIn jobs for a handful of accounts once in a while. Nothing fires when a target account triples its open role count. No CRM field tracks headcount velocity. The window closes without anyone noticing it opened. This post shows how to build a simple hiring spike monitor that watches your target accounts, detects when open role count surges past a threshold, sends a Slack alert with context, and tags the account in your CRM. Why Hiring Spikes Are One of the Best B2B Buying Signals When a company's job posting count spikes — especially in functions like engineering, ops, or the department your product serves — it tells you three things at once: The