Hiring Signals: Tech Stack & Headcount Growth from Job Posts

Hiring signals are the clues a company's job postings give about what it is building and buying. This Actor reads companies' public job boards and turns every opening into sales and market intelligence for SDR teams, investors and recruiters:

• Tech stack. About 200 tools are detected across CRM, data warehouses, cloud, languages, AI/ML, security, finance and HR. For example, "Snowflake appears in 23% of their postings."
• Team growth by function (Engineering, Sales, Data & AI, Marketing, Support...) and by seniority (Junior → Director+).
• Where they hire (top locations) and the remote share.
• Salary bands where they're published.
• What changed since your last run: open-jobs delta, plus new technologies (a new tool showing up in postings is a buying or migration signal) and dropped ones.

It works with Greenhouse, Lever, Ashby, Workday, SmartRecruiters, Workable and Recruitee. Paste careers URLs or just company names.

What data can you extract from job postings

One report per company, with the tech stack, team growth, locations, salaries and changes described above. Example:

{
  "company": "palantir", "ats": "lever", "openJobs": 310, "postedLast30Days": 16, "remoteShare": 0.0,
  "byFunction": {"Engineering": 195, "Finance & Legal": 18, "Operations": 13},
  "technologies": [{"name": "Python", "category": "Languages", "jobsMentioning": 190, "share": 0.613},
                   {"name": "Kubernetes", "category": "Cloud & Infra", "jobsMentioning": 51, "share": 0.165}],
  "changeSinceLastRun": {"openJobsDelta": 12, "newTechnologies": ["Databricks"], "droppedTechnologies": []}
}

The company's own name and boilerplate text that appears in every posting are filtered out, so the signal stays clean.

Find a company's tech stack from its job postings

Job ads name the tools a team works with every day, so they reveal a company's tech stack better than website scanners, which only see front-end scripts. Snowflake, dbt, Salesforce, Kubernetes and Workday HR never show up in a page's source code, but they do show up in the job descriptions.

How do hiring signals work for sales teams

A company that suddenly posts several roles mentioning a tool (for example Snowflake or Salesforce) is probably adopting or migrating to it. Use these signals to find accounts for your product, and to time outreach to hiring spikes.

Use cases

• Sales and SDR teams: find accounts adopting (or leaving) your competitor's tool, and time outreach to hiring spikes.
• Investors and analysts: headcount momentum and strategic direction (for example, AI hiring share).
• Recruiters: which companies are scaling which teams right now.

Schedule it weekly, and send the results to Google Sheets with our Google Sheets Import & Export Actor.

Use it in Claude, ChatGPT and Cursor

Connect Apify's MCP server (mcp.apify.com) and your AI assistant can research accounts itself. For example: "what tech stack is Palantir hiring for, and which teams are growing?" The only required input is companies.

How much does it cost

Pay per event: $0.009 per company report (100 companies ≈ $0.90), plus the standard start fee. Turning on the individual job rows adds no charge. Apify Silver plans get 10% off, Gold and higher 20%.

FAQ

What are hiring signals?

Hiring signals are facts you can read from a company's open jobs: which technologies it asks for, which teams are growing, where it hires, and how those numbers change over time.

Why are hiring signals important?

Job posts are public and updated by the company itself, so they often show plans before a press release does. A new tool appearing in postings is often a buying or migration signal.

Do hiring signals work?

They are a useful hint, not proof. A tool named in job posts means the company uses or plans to use it, but a company with few openings gives you little signal. Each report shows the number of open jobs, so you can judge how much data is behind it.

How do I find out what tech stack a company uses?

Paste the company's careers URL or name. The report lists each technology its job posts mention, with the share of postings that name it, grouped by category (CRM, data, cloud, languages, AI/ML, security, finance, HR).

Can I get job postings data for many companies at once?

Yes. List as many companies as you like. You get one hiring-signals report per company, and turning on includeJobs adds the individual job postings.

Which job boards does it read?

Greenhouse, Lever, Ashby, Workday, SmartRecruiters, Workable and Recruitee, through their public job APIs. Paste careers URLs or company names. It does not read LinkedIn.

Do I need a login or API key?

No.

Can I track changes over time?

Yes. Each run compares with your previous run and reports the open-jobs change plus new and dropped technologies. Schedule it weekly.

Related tools

• ATS Jobs Scraper: the individual job rows from the same job boards.
• Company Enrichment API: one domain in, a company profile with socials, tech stack and open jobs out.
• Competitor Monitoring: weekly new pages, jobs, ads and news per competitor.