Software Engineer 3 – Platform Security
Core
Design, build, and maintain secure cryptographic platforms and services that enable trusted transactions and secure communications for eBay's global marketplace.
Role type
Senior IC platform security engineer (cryptography)
Builds
Cryptographic libraries, PKI services, and secure key management systems for internal platforms
Domain
Ecommerce + Cryptography/Security
Deliverable
production ML models | product features
Required skills
Cryptography (AES, RSA, ECC, DSA), PKI, Certificate management, Secure key handling, Go/Java/C++, Distributed systems, Secure coding practices
Preferred skills
HSM/TPM integration, Post-quantum cryptography, AI-assisted engineering tools
Technologies
Go, Java, C++, JCA, JCE, PKCS#11, KMIP
Responsibilities
Build cryptographic libraries and service components, Develop systems using public key cryptography, Contribute to PKI and trust frameworks, Implement extensible secure service integrations, Support production readiness via testing and monitoring, Participate in threat modeling and security reviews
Seniority
Senior, hands-on IC
