I'm an Engineering Manager at Maya (PayMaya) in the Philippines, where I lead the platform responsible for our OAuth2/OIDC authorization server and UAM (identity and access management). Day-to-day, that means owning auth flows for millions of users, driving open banking integrations, and making sure the security and compliance bar stays high (BSP AFASA, FAPI 1.0 Advanced). Before Maya, I spent three years at Tiket.com as a Technical Lead, managing a team of 14 engineers building pricing infrastructure for accommodations and flights - rebooking logic, metasearch partner pricing, and Integration. And before that, nearly 4 years at Paytm, where I worked on PayTM Movies and OAuth 2 requirements. The thread across all of it: auth, platform engineering, and distributed systems at scale. During the last decade, I have taken more than 500 interviews across all levels, from Interns to Engineering Managers. I write about this stuff on LinkedIn and Medium - mostly technical deep dives (JWT internals, OIDC flows, Spring Boot) and occasional engineering leadership takes. Happy to chat about: 1. OAuth2/OIDC architecture and implementation 2. Building auth platforms on Spring Boot / Keycloak 3. Engineering leadership and team structure in fintech 4. FAPI / open banking compliance 5. Career paths in platform/infra engineering