What are hiring signals?

Hiring signals are changes in a company's job postings that show what it is about to need: a role your service fills, a jump in openings, a new location or a senior role that just closed. TheirStack reads them from job boards, ATSs and career pages, and you filter on them in Job Search or Company Search.

How do I get alerts when companies post jobs that match what I sell?

TheirStack alerts you to matching jobs through a saved search: turn on daily or weekly email alerts, or attach a webhook that fires as soon as we find a matching job. Webhooks send events to Slack, Google Sheets, Zapier, Make, N8N or your own endpoint, and "Trigger once per company" sends one event per company.

How fresh is TheirStack's job data?

TheirStack finds 73% of new jobs the same day they are posted, 91% by the end of the next day and 97% within three days. We scrape busy job boards and career pages every 10 minutes, medium sources hourly and small sites daily, and usually detect closed jobs within 24 hours. Today's counts fill in over two or three days.

How do I exclude recruitment agencies from my lead lists?

In TheirStack, set the company type filter to direct employer to drop recruiting agencies from job and company searches. Company type is our own precision-tuned heuristic, so catch the few agencies it misses by excluding company names or descriptions with words like "staffing". Skip the Staffing & Recruiting industry exclusion: it adds nothing and drops companies with no known industry.

Can I get contact details for the people at the hiring companies?

Yes, TheirStack's Find people action opens the hiring companies you select pre-filled in Apollo, LinkedIn Recruiter, Sales Navigator or ContactOut, where you find the contacts. Some jobs also list the hiring manager's name, role and LinkedIn URL, which the Has hiring manager filter requires, though it is often the recruiter who posted the job.

Find companies whose hiring shows they need you

Reach companies when their hiring shows they need what you sell: the roles they post, how many, how urgently, and whether they get filled.

Who it's for: A recruiter, staffing firm, job board or B2B seller whose buyer is defined by how a company hires: which roles, how many, how urgently, and whether they get filled.

Try it free See integrations

Spotify posted a Senior Cybersecurity Engineer role · 2h agoRole-based hiring
Stripe posted a Head of Finance role · 12 min agoHiring urgency
Siemens is hiring 14 roles at a new site in Austin · 40 min agoLocation expansion
Klarna reposted a Data Engineer role for the third time · 1h agoHard-to-fill role
Amazon has 38 open roles in one platform team · 3h agoDepartment scaling

How finding companies by their hiring works

TheirStack turns hiring into a sales trigger: it finds the companies posting the roles, sites or reposts that show they need you, ranks them by how many matching jobs they have posted, and tells you the day a new one appears.

Find

Find companies posting the roles you sell to

TheirStack searches job posts by title, location and date, so you see every company hiring for the role your service fills or supports.

337k new jobs a day
Job title, country and date filters
Leave out recruiting agencies

Job ads for CFO or Head of Finance · last 7 days

CompanySignal

StripeHead of Finance, UK · 12 min agoRole-based hiring

KlarnaCFO · 3h agoRole-based hiring

SpotifyHead of Finance · 1d agoRole-based hiring

Prioritise

Start with the strongest trigger

TheirStack ranks companies by how many matching roles they have posted, and its job history and location filters show a role posted again or hiring in a new city.

Why nowPriority

Siemens14 roles at a new Austin site · 40 min agoHigh

KlarnaData Engineer reposted 3 times · 1h agoHigh

Amazon38 open roles in one team · 3h agoMedium

StripeFirst finance hire in the UK · 12 min agoMedium

Write

Reach them while the role is open

TheirStack sends each new match by email or webhook, so your message lands while the company is still hiring for it.

New matches by email alert or webhook
Webhooks can fire once per company
Find people in Apollo, Sales Navigator, ContactOut

14 roles by springDraft

Siemens

Hi ,

Saw you're opening a new site in Austin, with 14 roles to fill by spring.

We place plant and operations staff for new sites, usually within six weeks. Worth a call while you plan the hiring?

1 / 3 · New site

Specific scenarios

Find companies entering a new countryNew
Sell to a company in the weeks after its first hires in a new country, while it is still choosing the vendors it will use there.
SignalsMarket entry Role-based hiring
Try →
Find companies the moment they post a target role
Find companies hiring the role your service fills or replaces, such as a fractional CFO, an executive search or a staffing placement, and contact them while it is open.
SignalsRole-based hiring Hiring urgency
Try →
Find companies opening a new site or market
Sell fit-out, equipment, real estate or site services into a company's expansion while it is still setting up the new site or market.
SignalsLocation expansion Strategic initiative
Try →
Find companies struggling to fill roles
Sell interim staffing, managed recruiting or outsourcing to teams whose roles keep being reposted or stay open for months.
SignalsHard-to-fill role Department scaling
Try →
Find employers advertising on rival job boards
Find employers paying to promote jobs on rival job boards but not on yours, and sell them sponsored listings on your board.
SignalsHiring urgency
Try →

Show 3 more

Find employers already paying to hire
Sell your search services or recruiting tools to employers paying to promote their job ads, a hiring budget they have already shown exists.
SignalsHiring urgency Hard-to-fill role
Try →
Find companies that just filled a senior role
Reach the new hire the moment a senior role you sell to is filled, before they choose their vendors.
SignalsNew decision-maker hired
Try →
Find companies with the most open jobs
Rank companies by how many roles they have open, and sell recruiting help, HR tools or seats to the ones hiring at scale while budget is approved.
SignalsDepartment scaling
Try →

Learn how

Guide
How to Search Job Postings Across 328,000+ Sources
Complete guide to searching millions of job postings from 328,000+ sources. Learn how to combine filters for sales prospecting, recruiting, and market research — with full walkthroughs for each use case.
Guide
Outreach companies actively hiring
Learn how to set up automated outreach to companies actively hiring using TheirStack webhooks and integrations — send personalized messages as soon as new job postings match your criteria.
Guide
How to monitor job postings automatically
Learn how to automatically monitor job postings and get real-time alerts when companies post new jobs. Set up automated job tracking with webhooks to Slack, CRM, or any system.
Guide
How to Automate Your Ad Chase as a Recruiting Agency
Learn how to automate ad chase — the process of monitoring job postings to find companies actively hiring and reach out before competitors. Set up filters, alerts, and workflows with TheirStack.
Guide
How to send a slack message for every new job found
Step-by-step guide to automatically notify your team in Slack whenever new jobs are posted using TheirStack's webhook integration with Make, Zapier, or N8n.
Guide
How to Find Reposted Jobs
Learn how to find reposted job listings and use them as strong hiring signals for sales prospecting, recruiting, and competitive intelligence.
Guide
How to Find Promoted Jobs
Learn how to find promoted (sponsored) job listings on other job boards and turn them into sales leads for job board operators, recruiters, and HR software vendors.
Guide
How to track closed job postings
Learn how to use TheirStack's Job Closed filter to find recently filled roles, detect hiring slowdowns, and get real-time notifications via webhooks when job postings are removed.
Guide
How to Find Companies With the Most Open Jobs
Learn how to find companies hiring at scale — those with more than a set number of open jobs — using the matching-jobs filter in Company Search, then export them for outbound.
Customer story
How 6nomads Finds Fast-Growing Companies
Discover how 6nomads leverages TheirStack to identify fast-growing companies with big hiring needs and build a pipeline of qualified leads for their recruiting business.

Find companies whose hiring shows they need you: integrations with AI assistants, automations and CRMs

TheirStack works with the AI assistants, automation tools and CRMs you already use: ask Claude or ChatGPT through the MCP server, send new matches to Clay, n8n, Make or Zapier by webhook, and create leads in Salesforce or HubSpot.

AI assistants
Ask Claude, ChatGPT, Cursor or any MCP client to search jobs, companies and tech stacks through the TheirStack MCP server.
MCP server
https://api.theirstack.com/mcp
Read the MCP docs
Automations
TheirStack sends every new matching company by webhook as soon as it finds it, to your automation platform or through it into your CRM and sales tools.
Automation platforms
CRMs and sales tools
Run this use case from your own code
```
curl -X POST https://api.theirstack.com/v1/jobs/search \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "job_title_or": ["CFO","Head of Finance"],
    "job_country_code_or": ["GB"],
    "posted_at_max_age_days": 7
  }'
```
Read the API docs Read the webhooks docs