TheirStack

1. 1

   TheirStack continuously ingests job postings from more than 350,000 sources: aggregator boards, company career pages, applicant tracking systems, and staffing platforms, across 195 countries. Roughly 300,000 new postings arrive each day and each carries more than 40 structured fields including salary, seniority, location, remote status, and the hiring company's domain, industry, and size.

2. 2

   Natural language processing trained on technical job text scans each posting for technology mentions and maps them to a taxonomy of over 33,000 tools. That produces the technographics layer: a dated record that a given company mentioned a given technology in a given posting, with a link back to the source posting so you can read the sentence yourself.

3. 3

   The buying intents layer sits on top. Rather than only extracting named tools, it matches keyword patterns that imply a need: a posting asking for experience migrating off a platform, or hiring a role that only exists once a company has bought a certain class of software. That is what turns a hiring record into a reason to call.

4. 4

   You query all three datasets from the web app with more than 30 filters, or programmatically. There are separate APIs for job search, company search, company lookup, and enrichment, MCP servers for job postings and technographics so an AI assistant can query the corpus directly, CSV export on every plan, and email alerts for new postings matching a saved search. Every query and export consumes credits from your balance.

Credit-based, sold either as a monthly subscription or as one-time packs with no subscription; unlimited team members and no per-seat charge.

Value assessment: Model it at two volumes. A founder validating a market buys the $109 one-time pack, pulls 1,000 company records with their inferred stacks, and never pays again; at roughly 11 cents a record that is cheap for data nobody else has. A vendor running continuous outbound sits on the $169 monthly plan for 10,000 credits, or around 1.7 cents a credit, and pulls a few thousand qualified companies a month with the API doing the work. At $400 for 50,000 the unit cost falls under a cent. The pricing is the most honest in the category: no seats, no separate API bill, no annual lock-in, and a free tier that actually lets you check whether your buyers appear in job ads before you spend anything.

Setup time

Twenty minutes to a first list. Sign up, spend free credits on a query against your best-guess ICP, and read the source postings to see whether the extraction is catching what you expected. API integration is another afternoon.

Learning curve

Low for the app, moderate for the judgement. The filters are straightforward; the skill is learning which technology mentions actually indicate ownership rather than aspiration, and building filters that exclude recruitment agency postings.

Onboarding

Entirely self-serve at every tier, including the API. There is no sales call, no implementation fee, and no minimum term on the one-time packs.

Migration notes

Nothing to import. On exit, exported CSVs are yours and the one-time pack model means there is nothing to cancel if you bought credits outright. Saved searches and alert definitions do not port to another vendor, but they are cheap to rebuild.

Platforms

Web applicationREST APIs for jobs, companies, technographics, and buying intentsMCP serversCSV export

API

Job search, company search, company lookup, enrichment, technographics, and buying intents APIs, all drawing on the same credit balance as the web app, plus job posting and technographics MCP servers for AI assistants.

Compliance

Job posting data is published business information rather than personal data, which keeps privacy exposure lowNo publicly advertised SOC 2 attestation

Data residency

Not published.

SSO

Not advertised on the published tiers.

Security notes

The corpus is aggregated from publicly posted job advertisements, so the dataset itself carries little personal data. The compliance question shifts to whichever contact database you pair it with to find humans at the companies you identify.

Channels

Email supportIn-app chat

Documentation

Detailed API reference covering job search, company search, technographics, and enrichment endpoints, plus data source pages documenting which boards and platforms feed the corpus.

Community

No formal user forum; the company publishes comparison and methodology posts covering job posting data providers.

Founded

2021

Headquarters

Barcelona, Spain

Ownership

Privately held

Founders

Xoel Lopez Barata, Christian Palou

Employees

Not disclosed; a small engineering-led team

Funding

No major venture round publicly disclosed.

TheirStack is the best-priced serious signal tool in this category and the only sensible option if the software you sell lives somewhere a crawler cannot reach. Reading job ads rather than websites is not a clever workaround, it is a structurally better view of a company's internal stack, and 300,000 new postings a day gives it a freshness advantage that weekly-crawl vendors cannot close. Buy the $109 one-time pack first and check whether your buyers actually post job ads, because if they do not, nothing else about the product matters. If they do, the $169 monthly plan with unlimited seats and the API included is a genuinely cheap foundation for an account-selection motion. Just build the verification habit early: this is inference, every record links to the posting it came from, and the teams that read the source before dialling get very different results from the ones that trust the label.

Written by the SaaSTracker editorial team. Awards, when shown, are judged against the published criteria in our methodology.