# Principal Security Engineer at Crux

- Company: Crux
- What the company does: Backed by a16z.
- Company website: https://www.cruxdata.com
- Type: Startups
- Level: Principal and up
- Location: Palo Alto
- Work setup: On-site
- Posted: 2026-11-02
- Apply by: 2026-12-17
- Apply: https://jobs.ashbyhq.com/crux/9215db69-f594-4485-9eb2-38406667e6b7?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/crux-principal-security-engineer/

## About the role

You will be the first security engineer at Crux and the architect of how our platform protects customer workloads, from hardware root of trust to the tenant boundary. Reporting within our CTPO organization, you will define the security architecture of record for our TPU clusters, data centers, network, and control plane, and build the controls yourself. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- 12+ years in security engineering, with deep focus on infrastructure, cloud, or platform security at scale
- Hands-on experience securing bare metal and data center infrastructure, including hardware root of trust, TPMs, secure and measured boot, BMC hardening, and out-of-band management networks
- A track record of designing multi-tenant isolation and identity and access architectures for a cloud or hyperscale platform, and shipping them to production
- Infrastructure security at a hyperscaler (Google, AWS, Microsoft, Meta) or a neocloud (CoreWeave, Nebius, Lambda, Crusoe)
- Experience with confidential computing, remote attestation, or securing AI accelerators and model weights
- Experience building controls for FedRAMP High, IL5, or sovereign cloud programs

Tags: Technology

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/crux-principal-security-engineer/