Cyber Defense Operations Center Senior Analyst

TransUnion • Chicago, IL

80d • $67,500 - $112,500

About The Position

This role is a Senior Analyst member of the TransUnion Global Cyber Defense team, which includes CDOC, Global Information Threat Protection (GITP), Incident Response and Threat Hunting team, and Security Architecture team. As a Senior Analyst in the Cyber Defense Operations Center (CDOC), they will play a critical role in safeguarding TransUnion’s global infrastructure. This position focuses on proactive monitoring across on-prem, cloud, and hybrid environments and also contribute to incident response, propose threat detections. You will leverage cutting-edge technologies, automation, and threat intelligence to identify and mitigate sophisticated cyber threats. This is a 24/7 operational team; shifts may include nights and weekends. The role involves collaboration with global security teams, engineering, and business stakeholders.

Requirements

• 3+ years of experience in SOC operations, incident response, or cyber defense.
• Proficiency with SIEM platforms (Splunk preferred), EDR tools (CrowdStrike, Defender, Tanium), and CASB solutions (Netskope).
• Strong understanding of network protocols (DNS, HTTP/S, SMTP) and packet analysis.
• Hands-on experience with Windows, Linux, and macOS security hardening.
• Deep understanding of MITRE ATT&CK framework, TTPs, and threat actor behaviors.
• Working knowledge of AWS, Azure, or GCP security fundamentals.
• Exposure to SOAR platforms and scripting (Python, PowerShell) for playbook development.

Nice To Haves

• Certifications: CompTIA CySA+, GIAC GCIH, Certified Ethical Hacker (CEH), Cisco CyberOps Associate, Certified Cloud Security Professional (CCSP), Splunk Core Certified Power User or equivalent.
• Experience in threat hunting and proactive detection.
• Familiarity with zero-trust principles and modern security architectures.

Responsibilities

• Perform in-depth analysis of security events, alerts, and incidents across diverse environments.
• Utilize threat intelligence and forensic techniques to identify emerging threats and adversary tactics.
• Develop and enhance SOC processes, playbooks, and automation workflows.
• Collaborate with engineering teams to improve detection capabilities and reduce false positives.
• Support compliance, governance, and audit requirements related to security operations.
• Participate in on-call rotations for escalated incidents and major security events.
• Foster a culture of continuous learning and share knowledge to peers and juniors.

Benefits

• Flexible time off for exempt associates.
• Paid time off for non-exempt associates.
• Up to 12 paid holidays per year.
• Health benefits (including medical, dental, and vision plan options and health spending accounts).
• Mental health support.
• Disability benefits.
• Up to 12 weeks of paid parental leave.
• Adoption assistance.
• Fertility planning coverage.
• Legal benefits.
• Long-term care insurance.
• Commuter benefits.
• Tuition reimbursement.
• Charity gift matching.
• Employee stock purchase plan.
• 401(k) retirement savings with employer match.
• Access to TransUnion’s Employee Resource Groups.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees