exs-cyberjob-scraper

This tool scans public job posting feeds from hiring platforms like Greenhouse, Lever, Ashby, and Workday, filters out non-security roles, and tallies which cybersecurity certifications employers mention most often in their listings. The output is a ranked list showing how frequently each credential appears across thousands of postings. It is built in Elixir, a programming language that runs on the Erlang virtual machine.

The most recent run the README documents scanned 278,145 job postings from 1,195 employers and isolated 11,511 as genuine cybersecurity roles. Of those, CISSP appeared in 19.1% of postings, making it the most requested certification. GIAC came second at 10.4%, followed by CISM at 8.3%, CompTIA Security+ at 7.7%, and OSCP at 6.3%. The list continues through twelve certifications in total, down to CompTIA CASP+ at 2.3%.

The README itself functions as a showcase of one particular run's results rather than as a code walkthrough. The data is presented as a table and as text-based bar charts for each certification. A separate file, README2.md, contains the actual setup instructions for running the scraper yourself.

Installation on a fresh Linux machine is described as two commands: run an install script that downloads Erlang, Elixir, and the project's dependencies, then run the certscout binary with a flag specifying which job board to target. The installer builds everything needed, so you do not need to have Elixir installed beforehand.

This would be useful to anyone trying to figure out which certifications to pursue for a cybersecurity career, or to anyone doing market research on what credentials employers in the security field currently value. The data is tied to a specific scan date, so the numbers reflect one point in time rather than a continuously updated feed.