I built a job board that only lists one type of role

Every job board tries to list everything, and I went the other way. I built Jobs Base to only surface "builder" roles: founding engineers, solo devs, and 0-to-1 generalists who ship end-to-end.

I built an LLM pipeline that reads every job description and classifies whether it's actually a builder role. The filter is aggressive: I'm already searching with niche queries like "founding ai engineer" and "0 to 1 engineer," and even from those results only about 9% qualify. Out of 24,600+ jobs scraped so far, only 2,271 made it through across 1,574 companies. The rest looked like builder roles on the surface but were really standard engineering positions with a trendy title.

One thing I found surprising is that Hacker News and YC job postings have a builder role rate around 33%, compared to about 10% from LinkedIn with the same keywords. Makes sense: the companies posting on HN tend to be smaller and earlier stage, so the roles genuinely involve more ownership. On LinkedIn, a "founding engineer" posting from a 500-person company usually means something very different.

The salary data is also telling: builder roles average $138k-$206k, 65% are senior or lead level, and despite the "work from anywhere" stereotype only 30% are actually remote, 50% are on-site, and 20% are hybrid.

I also made the entire dataset available through a free REST API and MCP endpoint, no auth required. You can search builder jobs from ChatGPT, Claude, VS Code, Cursor, Gemini CLI, Windsurf, JetBrains, Zed, and dozens of other tools that support MCP. Built it as an afterthought and it turned into a completely separate acquisition channel: developers found the product through the API docs before they ever saw the job board itself.

If you're looking for builder roles or hiring for one: browse builder jobs or check out the API docs.