# Hardware Reliability Engineer at Density

- Company: Density
- What the company does: Density shows you how people use your space and helps you get more out of every square foot. Backed by Kleiner Perkins and South Park Commons.
- Company website: https://www.density.io/
- Type: Startups (AI role)
- Level: Mid level
- Location: Mountain View, CA
- Work setup: On-site
- Posted: 2026-06-18
- Apply by: 2026-10-08
- Apply: https://job-boards.greenhouse.io/densityai/jobs/4289442009
- Page: https://www.1752.vc/careers/jobs/density-hardware-reliability-engineer/

## About the role

Own the reliability of the advanced packages and systems that turn our AI accelerator silicon into products that survive years in the field. You'll define how we qualify 2.5D/3D and heterogeneously-integrated packages, model their physics of failure, drive root-cause when things fail, and build the reliability engineering that lets us predict lifetime under real workloads.

## What they're looking for

- MS or Ph.D. in Materials Science, Mechanical Engineering, Electrical Engineering, Applied Physics, or related field
- 5+ years in 2.5D/3D advanced packaging reliability
- Deep command of physics-of-failure methodology and strong materials-science knowledge, particularly interconnects and interfaces
- Proficiency in statistical reliability analysis (Weibull, lognormal, acceleration modeling, JMP, Minitab, or Python)
- Hands-on failure analysis with C-SAM, X-ray CT, SEM, TEM, FIB, and EBSD
- Proven track record driving OSAT/partner improvements and managing qualifications

Tags: Hardware