Optum is a global organization that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health optimization on a global scale. Join us to start Caring. Connecting. Growing together.

Primary Responsibilities

Lead and conduct highly complex security incident investigations across endpoints (memory and disk), network traffic, and cloud environments, including Azure and Microsoft 365
Perform advanced incident investigation and in‑depth log analysis by correlating data from multiple sources such as SIEM, EDR, network security devices, and cloud platforms to accurately identify scope and impact
Act as the final escalation point for critical and high‑severity security incidents, providing expert guidance and decisive incident handling
Conduct static and dynamic malware analysis, including reverse engineering of exploits, and analyze adversary tactics, techniques, and procedures (TTPs) to understand attacker behavior
Map attacker activities and observed behaviors to industry‑recognized frameworks such as MITRE ATT&CK, NIST to ensure structured analysis and reporting
Execute effective containment actions during incidents, including isolating compromised systems, blocking malicious traffic, disabling accounts, and applying emergency controls to limit spread and impact
Acquire digital evidence from compromised environments, including disk images, memory dumps, system logs, and network traffic, using forensically sound methodologies
Maintain a strict chain of custody by ensuring all evidence is properly documented, securely stored, and protected from tampering throughout the investigation lifecycle
Analyze forensic artifacts such as file systems, registry entries, event logs, and memory structures to identify indicators of compromise and malicious activity
Perform memory forensics to detect running processes, injected or malicious code, credential theft mechanisms, and other in‑memory threats that may not be present on disk
Validate that eradication activities are fully completed and ensure affected systems are securely restored to normal operations without residual risk
Prepare comprehensive incident reports detailing timelines, root cause analysis, impact assessment, indicators of compromise (IOCs), and remediation actions taken
Collaborate with Security and Engineering teams to automate repetitive tasks such as alert enrichment, containment workflows, response actions, and ticket creation to improve efficiency and consistency
Leverage internal and external threat intelligence feeds to enrich investigations with contextual insights, including known malicious IPs, domains, threat actor profiles, and attacker methodologies
Work closely with cross‑functional teams to ensure coordinated and timely execution of incident response activities
Continuously enhance detection and response capabilities by recommending improvements to SIEM and EDR platforms, tuning detection rules, developing better queries, and identifying logging gaps
Handle Priority 1 (P1), Priority 2 (P2) and other critical incidents with urgency, ensuring rapid response, clear stakeholder communication, and minimal business disruption
Monitor and report on key performance indicators (KPIs) such as Mean Time to Detect (MTTD) and Mean Time to Respond (MTTR) to measure and improve incident response effectiveness
Comply with the terms and conditions of the employment contract, company policies and procedures, and any and all directives (such as, but not limited to, transfer and/or re-assignment to different work locations, change in teams and/or work shifts, policies in regard to flexibility of work benefits and/or work environment, alternative work arrangements, and other decisions that may arise due to the changing business environment). The Company may adopt, vary or rescind these policies and directives in its absolute discretion and without any limitation (implied or otherwise) on its ability to do so

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Required Qualifications

5+ years of hands‑on experience in Major Security Incident Management, including:

Case management
War room facilitation
Paging / on‑call coordination
Security bridge management
Solid log analysis experience across multiple security domains, including:
SIEM platforms
Endpoint security
Perimeter/network security
Threat intelligence feeds
Email security solutions
Proven experience in Sandbox Analysis for malware and suspicious file investigation
Hands‑on Digital Forensics experience, including evidence collection, analysis, and reporting
Solid understanding and application of security frameworks, including:

MITRE ATT&CK
MITRE D3FEND
NIST (incident response, security controls, or related standards)
Practical experience with forensic tools, such as:
Magnet AXIOM Forensics
REMnux
X‑Ways Forensics
EnCase
Forensic Toolkit (FTK)
Or equivalent forensic tools

Preferred Qualifications

Relevant security certifications, such as:

CHFI (Computer Hacking Forensic Investigator)
EnCE (EnCase Certified Examiner)
ACE (AccessData Certified Examiner)
GCFA / GCFE
GIAC Certified Incident Handler (GCIH)
Microsoft Security Operations Analyst Associate (SC‑200)

Advanced understanding of adversary behavior, including:

Adversary Tactics, Techniques, and Procedures (TTPs)
Cyber Kill Chain methodologies
Expert‑level application of MITRE ATT&CK and MITRE D3FEND

Solid working knowledge of NIST frameworks, particularly:

NIST 800‑61 (Computer Security Incident Handling Guide)

Experience handling major security incident scenarios, such as:

Ransomware attacks
Distributed Denial of Service (DDoS)
Advanced Persistent Threats (APT)
Business Email Compromise (BEC)
Fundamental understanding of application and networking protocols, including:
Application protocols: HTTP, DNS, FTP, etc.
Networking protocols: TCP, UDP, ARP, ICMP, etc.
Ability to analyze packet capture (PCAP) files using tools such as Wireshark
Knowledge of operating system internals, including:
Virtual memory and paging mechanisms
Malware techniques used to evade detection

At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone - of every race, gender, sexuality, age, location and income - deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes - an enterprise priority reflected in our mission.

Optum is a drug-free workplace. © 2026 Optum Global Solutions (Philippines) Inc. All rights reserved.

Information Security Engineer Consultant