I run a Job Postings Search API ( https://x402.freeq.one/tools/jobs.html ) that queries live postings across boards and returns structured results — title, company, location, apply URL, salary, description. Building it taught me my favorite kind of lesson: the data lies in boring, predictable ways. First real test: "backend engineer, Berlin". 240 hits. 178 unique jobs. The same posting appeared five times. Companies publish through their ATS (Greenhouse, Lever, Workday), then the listing g...