# Software Engineer - Test Automation (SDET) at Mach9

- Company: Mach9
- What the company does: Backed by Y Combinator.
- Company website: https://www.mach9.ai/
- Type: Startups (AI role)
- Level: Mid level
- Location: San Francisco
- Work setup: On-site
- Pay: $130K to $170K base salary per year (USD)
- Posted: 2026-09-04
- Apply by: 2026-10-19
- Apply: https://jobs.ashbyhq.com/mach9/95b6b89b-4c39-4e10-97eb-f29aa463c894
- Page: https://www.1752.vc/careers/jobs/mach9-software-engineer-test-automation-sdet/

## About the role

At Mach9, Test Automation Engineers protect the workflows that civil engineers and surveyors rely on when they work in our browser-based 3D CAD platform. Coding agents do a growing share of our development work, but that only works when we have automated checks that return fast, trustworthy answers. You'll own the accuracy of those answers — giving us coverage that spans from data upload to deliverable export — and the test infrastructure it runs on.

Tags: Engineering