About

Security engineer with 5+ years in security operations across enterprise and telecom-financial environments. Hands-on with Microsoft Sentinel and Defender XDR for detection engineering, incident response and log source onboarding. Experienced in hardening Linux and Windows estates to PCI-DSS requirements and in driving cross-functional security changes in large, matrixed organisations. Comfortable translating technical findings for both engineering teams and executive stakeholders. Fluent in English and Swedish; native Korean.