Hybrid Email Security Engineer - AI-Driven Defenses

Optum, a UnitedHealth Group Company; Metro Manila; Hybrid; PHP 900,000 - 1,400,000; Full time

Benefits offered by this job

Laptop Provided by the Company

Medical Plan (HMO) from Day 1

Dental, Medical, and Optical Reimburse

Life and Disability Insurance

Paid Time-Off Benefits

Tuition Fee Reimbursement

Employee Assistance Program (EAP)

Annual Merit Increases

Training and Staff Development

Employee Referral Program

All Mandatory Statutory Benefits

Job summary

Optum is seeking a Security Engineer, Email Security to design and implement enterprise email security capabilities across a global health technology infrastructure. You will lead evaluations, establish standards, and drive secure baseline management with AI-driven automation and telemetry integration.

In this role, you will administer and monitor CS and Defender for Endpoint, maintain policy configurations, and contribute to multi-year security roadmaps while collaborating with cross-functional

Qualifications

• Bachelor’s degree or 4+ years of equivalent information security or software engineering experience.
• 3+ years designing, implementing, and administering enterprise email security technologies.
• 3+ years establishing engineering standards, secure configuration baselines, technical documentation, or hardening guides.
• 3+ years with e-mail authentication protocols (DMARC, DKIM, SPF) and advanced e-mail protection capabilities.
• 2+ years in information security engineering, security operations, or cyber defense engineering.
• 2+ years hands-on with enterprise security tools and platforms including SIEM, XDR, or XEM.
• Knowledge of security frameworks NIST, CIS controls, MITRE ATT&CK

Responsibilities

• Design, build, and maintain scalable email security architectures and platform infrastructure.
• Establish and maintain enterprise engineering standards, secure configuration baselines, technical implementation standards, and architecture documentation.
• Lead technical evaluations, POV/POC initiatives for emerging email security capabilities, vendor offerings, and innovative tools.
• Monitor and remediate configuration drift, ensuring alignment with security baselines and governance.
• Use enterprise-approved AI tools and scripting frameworks to streamline engineering workflows and automation.
• Evaluate industry trends and contribute to multi-year engineering roadmaps and strategic security initiatives.
• Administer, maintain, and operate CrowdStrike and Microsoft Defender for Endpoint for assigned clients.
• Perform daily endpoint security checks, including sensor status and policy compliance.
• Manage and maintain EDR policies including Prevention, Detection, Real-Time Protection, and ASR rules.
• Configure and manage exclusions, whitelisting and false-positive handling.
• Create and maintain dashboards and reports for endpoint compliance and EDR metrics.

Skills

Email security technologies

Security engineering

DMARC DKIM SPF

Education

Bachelor’s degree or 4+ years of equivalent information security experience

Tools

SIEM

XDR

XEM

Job description

Optum is seeking a Security Engineer, Email Security to design and implement enterprise email security capabilities across a global health technology infrastructure. You will lead evaluations, establish standards, and drive secure baseline management with AI-driven automation and telemetry integration.

In this role, you will administer and monitor CS and Defender for Endpoint, maintain policy configurations, and contribute to multi-year security roadmaps while collaborating with cross-functional