williamtsai

● Delivered DevSecOps for version control, logging, interbank transfer, and surveillance systems. ● Operated and maintained core banking systems, handling incident triage, root-cause analysis, and postmortems with clear SLAs. ● Centralized telemetry for 500+ IoT endpoints into SIEM/EDR, enabling proactive threat hunting and policy-based automated response. ● Contributed to AML system features by collecting diverse transaction data and forwarding them to the AML server for screening. ● Performed functional testing across interbank transfer, surveillance, and logging services; authored test cases and acceptance criteria aligned to business rules.

● Designed and implemented tokenomics models and token issuance (GamFi). ● Established ISO 27001-compliant Information Security Management System(ISMS). ● Developed security policies, conducted risk assessments, and designed control implementation plans based on Annex A controls.