Software Engineer 3 – Platform Security

At eBay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts. Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work — every day. We're in this together, sustaining the future of our customers, our company, and our planet. Join a team of passionate thinkers, innovators, and dreamers — and help us connect people and build communities to create economic opportunity for all. Software Engineer 3 – Platform Security Location: Bengaluru Team: Cloud Platform Security About the Team eBay’s Cloud Security Engineering team builds foundational security services that protect our global marketplace. The team designs and operates secure, scalable cryptographic platforms that enable trusted transactions, secure communications, and strong identity guarantees across millions of users and services.

Summary We are seeking a Software Engineer 3 (T24) to join our Bengaluru team with strong hands-on experience in cryptography, encryption, and public key infrastructure (PKI). In this role, you will design, build, and maintain secure, maintainable software components and services in the cryptography and platform security domain, working on production-ready systems with a strong focus on quality, reliability, and operational excellence. What You’ll Do Build and enhance cryptographic libraries, integrations, and service components that support encryption, digital signatures, and secure key management. Develop and maintain software systems that use public key cryptography, including RSA, ECC, and digital signature workflows. Contribute to PKI, certificate-management capabilities, and trust frameworks used by internal platforms and services. Implement extensible, maintainable software solutions for secure service integrations and platform capabilities. Support production readiness through testing, monitoring, operational improvements, and continuous integration practices. Translate feature requests into design options, engineering tasks, and effort estimates for the team. Participate in threat modeling, security reviews, and validation of cryptographic designs and implementation choices. Improve the performance, scalability, and resilience of cryptographic operations in distributed, high-throughput systems. Stay current with modern cryptographic standards, vulnerabilities, and secure development best practices. Must-Have Qualifications Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience. 5+ years of software engineering experience, with meaningful hands-on work in security, cryptography, or secure platform development. Strong programming skills in Go, Java, or C++, with the ability to build production-quality backend software. Hands-on experience with cryptographic concepts and algorithms such as AES, RSA, ECC, DSA, and digital signatures. Strong understanding of PKI, certificate management, and secure key handling concepts. Experience with secure application development using technologies such as JCA, JCE, or similar security libraries and frameworks. Familiarity with PKCS#11, KMIP, or similar key management protocols and integrations. Good understanding of distributed systems, secure service design, and secure coding practices, including common cryptographic pitfalls. Experience working independently on components or sub-systems, with accountability for delivery, quality, and production support. Nice-to-Have Qualifications Experience with hardware-backed security, HSM integrations, or TPM-related capabilities. Exposure to modern cryptographic evolution areas such as post-quantum cryptography. Familiarity with AI-assisted