We're building product-authentication technology for physical goods, with customers in India and Europe. You'd be our first technical hire.
The role
Own the security-critical core of the platform — the architecture, the first build, and its independent security review.
What you'll do
- Build low-latency services that verify authenticated messages from secure hardware
- Own key management end to end — HSM or cloud KMS, key derivation, rotation and audit
- Build strongly consistent state for replay protection under concurrency
- Threat-model the system and take it through external security audit
- Support device provisioning with hardware and platform partners
- Help hire the team that follows
Must have
- 6+ years of backend engineering, including ownership of a security-critical production system
- Applied cryptography — symmetric primitives,
MAC verification, key derivation
- HSM or cloud KMS in production
- Distributed systems: solid consistency, idempotency, concurrency
- Low-latency API design
Strongly preferred — any one
- Secure NFC or smart cards (MIFARE DESFire, NTAG DNA family, SUN/SDM)
- EMV, SIM/eSIM, transit ticketing, access control or PKI
- Verifiable credentials or decentralised identity
- Smart-contract security
What we offer
- Ground-floor ownership of the core system
- Technical co-founder track with meaningful founding equity To apply
Message me with a few lines on the security-critical system you're proudest of — and what went wrong in it.