Senior AWS Cloud Architect - Security & Landing Zone Lead

Megazone Cloud US; Irvine (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Megazone US is seeking a senior Cloud Security Architect to lead AWS enterprise-scale multi-account designs, security architecture, and governance. You will set standards for landing zones, review architectures, enforce security baselines, and drive remediation across the cloud estate.

Fluency in Korean and English is required, and onsite work in Irvine, CA is expected. You will partner with a major automotive client’s Cloud Center of Excellence to ensure safe, scalable, and compliant cloud

Qualifications

• 7+ years in cloud infrastructure, including 4+ years designing on AWS at enterprise scale (multi-account, multi-VPC).
• Ownership of an AWS multi-account landing zone (Control Tower or equivalent).
• Deep AWS security: IAM policy design, SCPs, KMS, VPC security architecture, centralized logging and security services.
• Track record of governing other teams’ designs: architecture review and standards enforcement.
• Professional working fluency in Korean and English.
• Able to work onsite in Irvine, CA.

Responsibilities

• Own landing-zone and account architecture standards — account structure, organizational units, networking, identity, logging and guardrails.
• Review business-unit architectures and change requests, and approve, reject or improve them against the standard.
• Own security architecture: IAM and least privilege, encryption, boundary protection, secrets handling and the security baseline every account is measured against.
• Drive vulnerability and compliance posture across the estate (Security Hub, GuardDuty, Config, Inspector) and push remediation through the operations team.
• Produce the reference patterns and documentation that platform and operations engineers build from.
• Act as senior technical escalation for architecture and security incidents.
• Explain architecture and risk decisions to Korean-speaking client and HQ stakeholders, in writing and in meetings.

Skills

Cloud infrastructure

AWS enterprise design

Security architecture

Governance & standards

Korean & English fluency

Onsite in Irvine

Tools

AWS Control Tower

IAM & SCPs

KMS & VPC security

Security Hub/GuardDuty Config

Job description

Megazone US is seeking a senior Cloud Security Architect to lead AWS enterprise-scale multi-account designs, security architecture, and governance. You will set standards for landing zones, review architectures, enforce security baselines, and drive remediation across the cloud estate.

Fluency in Korean and English is required, and onsite work in Irvine, CA is expected. You will partner with a major automotive client’s Cloud Center of Excellence to ensure safe, scalable, and compliant cloud