Notes and writing on data, software, and cloud.https://mark-dovgalyuk.com/https://mark-dovgalyuk.com/blog/posts/bullhorn-oauth-part-1/https://mark-dovgalyuk.com/blog/posts/bullhorn-oauth-part-1/Bullhorn's API uses 3-legged OAuth, built for human-in-the-loop apps. Building a backend batch sync on top meant designing around that mismatch, plus the rotating refresh tokens Bullhorn issues and the failure modes that come with them.Wed, 27 May 2026 00:00:00 GMT