Senior Information Security Associate - Incident Response & Threat

Job Title:

Senior Information Security Associate - Incident Response & Threat Hunting

Job Code: 12247

Country: US

Skill Category: IT echnology

Description:

Job title: Senior Information Security Associate - Incident Response & Threat Hunting Corporate

Title:

Associate Department: Technology Location: Jacksonville

The pay range for this position at commencement of employment is expected to be between $95,000 and $110,000 annually.

Nomura is a global financial services group with an integrated network spanning approximately 30 countries and regions. By connecting markets East & West, Nomura services the needs of individuals, institutions, corporates and governments through its three business divisions:
Wealth Management, Investment Management, and Wholesale (Global Markets and Investment Banking). Founded in 1925, the firm is built on a tradition of disciplined entrepreneurship, serving clients with creative solutions and considered thought leadership. For further information about Nomura, visit  .

Aon’s Benefit Index ® , Nomura’s benefits
rank#1amongst our competitors

The Information Technology department at Nomura is at the forefront of innovation, driving technology solutions that empower our business and enhance client experiences. We leverage cutting‑edge technologies to develop and maintain robust systems and infrastructure, ensuring the security, reliability, and efficiency of our operations. Join our team and be part of a dynamic and collaborative environment that embraces technological advancements to deliver value and drive our digital transformation journey.

We are seeking a seasoned Information Security Analyst to join our cybersecurity team. The ideal candidate will spearhead incident response efforts, lead proactive threat hunting initiatives, and drive security improvements across the organization.

• Lead Tier‑3 security incident investigations from detection through resolution
• Perform digital forensics analysis and evidence collection using enterprise toolsets
• Conduct root cause analysis and identify attack vectors
• Implement incident containment and eradication strategies
• Develop comprehensive post‑incident remediation plans

• Execute proactive threat hunting campaigns using threat intelligence
• Develop and optimize custom queries for security tools and SIEM platforms
• Conduct hypothesis‑driven investigations
• Perform IOC‑based threat hunting across enterprise environments
• Analyze and report on emerging threat landscapes
• Create and maintain threat hunting playbooks

• Design and implement security control improvements
• Enhance detection rules and use cases
• Deliver executive‑level reports for management and stakeholders
• Facilitate lessons learned workshops
• Conduct trend and metrics analysis
• Lead knowledge transfer sessions

• Minimum 4 years of hands‑on experience in information security
• Demonstrated expertise in incident response, digital forensics, and threat hunting
• Proven track record of leading complex security investigations

• Advanced proficiency in SIEM platforms and query languages
• Expertise in digital forensics tools and methodologies
• Experience with threat intelligence platforms and IOC implementation
• Strong understanding of EDR/XDR technologies
• Proficiency in at least one scripting language (Python, Power Shell)
• Knowledge of log analysis and network security monitoring

• Strong analytical and problem‑solving abilities
• Excellence in technical writing and documentation
• Advanced presentation and stakeholder communication skills
• Ability to translate technical findings into business impact
• Experience in conducting technical training sessions

• Deep understanding of cyber attack methodologies and TTPs
• Expertise in incident handling frameworks (NIST, SANS)
• Knowledge of security control frameworks (MITRE ATT&CK, CIS)
• Understanding of threat intelligence concepts and application
• Familiarity with regulatory compliance requirements

• Relevant…