Backed by Greylock, Insight and Khosla.
About the role
Design and implement security-critical software and firmware for HSMs, secure elements, trusted execution environments, and hardware roots of trust. Build and harden the policy-to-HSM boundary responsible for authorizing certificate issuance and cryptographic signing operations. Found on 1752vc Careers, the job board for startup and VC roles.
What they're looking for
- 5+ years experience building secure embedded firmware for constrained environments
- Deep programming experience in C, C++, or Rust
- A strong track record of designing, implementing, debugging, and shipping production systems software
- Hands-on experience developing security-critical software or firmware within, or directly adjacent to, an HSM, secure element, TEE, or hardware root of trust
- HSM firmware or trusted applications
- Cryptographic mechanisms or hardware-accelerated cryptographic services
More about this role
We are hiring a Security Software Engineer to design and implement the hardware-backed security foundations used across OpenAI’s device ecosystem.
A central focus of this role is hardening the boundary between our policy systems and the HSMs that protect sensitive cryptographic keys. This boundary determines which operations may be performed, what may be signed, which policies must be satisfied, and how changes to trusted software and policy are authorized.
You will develop security-critical software and firmware within, or immediately adjacent to, an HSM trust boundary. Depending on your background, this may include HSM trusted applications, firmware services, cryptographic mechanisms, device drivers, PKCS#11 components, secure-provisioning protocols, or signing-policy enforcement systems.
This is a hands-on software-engineering role. You will be expected to design systems, write and review production code, debug across hardware and software boundaries, and carry projects from initial requirements through deployment. It is not an HSM administration, PKI operations, compliance, or architecture-only position.
Design and implement security-critical software and firmware for HSMs,...
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