Senior Software Engineer - AI Harness & Quality

Goodnotes Limited is seeking a Senior Software Engineer to join the Paddington-based AI-native product line. You'll work directly with the founder and a small squad to design, build, test, ship, and operate features that harness AI agents.

You will craft guides and automated checks to catch defects and performance regressions before code lands. You will contribute to iOS, Android, Mac, Windows, web, and backend stacks, shipping high-quality software with fast, deterministic checks and clear