Senior Backend Engineer | Cloud Security Engineer | Distributed Systems Engineer | Infrastructure (AWS) Led backend architecture for a high-security, enterprise-level Privileged Access Management (PAM) platform in regulated environments. Designed authentication services supporting over 50k users with low-latency identity verification, using multi-factor authentication (WebAuthn, OTP, U2F) and adaptive risk policies. Integrated HSM-backed key management and biometric authentication for compliance. Optimized authentication pipelines, reducing latency by 35–40%, and established observability standards improving reliability and reducing MTTR. Reduced account takeover incidents by 70–85% through enhanced fraud detection.