Vishesh J

Member Technical Staff - 2

Oracle • Vollzeit

Jun 2023 - Present • 2 yrs 11 mos

- Designed and launched AppNetworkPerimeters, a core IP-based access control system for production IAM services, enforcing network boundary constraints and strengthening application security at scale. - Led cross-team design and rollout of security enhancements across 90+ dependent services, enabling secure and scalable adoption of network boundary controls. - Headed cleanup of 800k+ redundant applications, reducing attack surface and improving IAM system hygiene. - Designed CIDR containment validation logic to enforce strict network boundaries, preventing unauthorized access configurations across multiple services. - Built multi-layer token validation system enforcing IP-based constraints on access tokens, mitigating token misuse and leakage risks in OCI production environments. - Reduced microservice latency by 15% by implementing in-memory feature flag caching across multiple services. - Designed and implemented fine-grained security policy enforcement mechanisms for elevated permission sets, reducing unauthorized access risk at scale. - Automated service principal policy management using Terraform, reducing policy statements by 60%. - Developed an end-to-end ETL pipeline integrating 4+ OCI services to monitor IP restrictions on Service Principals, improving security decision-making. - Reduced technical debt by eliminating redundant feature flags, improving code maintainability and runtime efficiency. - Improved system reliability by resolving critical production and customer-facing incidents during on-call rotations, preventing multiple outages.