Senior Cyber Security Analysts - Cyber Threat Hunting (CTH)

FIS Management Services LLC; Jacksonville (FL); Hybrid; USD 120,000 - 180,000; Full time

Job summary

FIS Management Services, LLC in Jacksonville, FL is seeking a Senior Cyber Security Analyst - Cyber Threat Hunting (CTH) to drive proactive threat hunts across endpoints, network, identity, and cloud telemetry to uncover adversary activity and reduce dwell time.

You will implement complex investigations using EDR and SIEM platforms, translate threat intelligence into detections, and mentor teams while automating workflows with PowerShell, Python, and Bash.

Qualifications

• Bachelor’s degree in Computer Engineering, Computer Science, Cybersecurity or a related field.
• 5+ years of experience in information security or a related role.
• Experience performing threat hunting, cyber threat intelligence, and incident response.
• Experience investigating endpoint threats with EDR platforms (e.g., CrowdStrike Falcon).
• Ability to develop and tune detections using SIEM platforms (Splunk, Azure Sentinel, QRadar).
• Ability to map adversary TTPs to MITRE ATT&CK and apply threat intelligence; scripting for automation is a plus.

Responsibilities

• Conduct proactive threat hunts across endpoints, network, identity, and cloud telemetry.
• Document hunt outcomes and investigative conclusions clearly.
• Collaborate with SOC, Pen Testing, and Detection Engineering to operationalize hunts into detections and playbooks.
• Automate hunting workflows using scripting languages (Python, PowerShell, Bash).
• Lead hunts in newly acquired or integrating environments, establishing baselines and risk assessments.

Skills

Threat hunting

Incident response

Threat intelligence

Scripting & automation

Education

Bachelor’s degree in Computer Engineering, Computer Science, Cybersecurity or related field

Tools

CrowdStrike Falcon

Splunk

Azure Sentinel

QRadar

Anomali

Python

PowerShell

Bash

Job description

Senior Cyber Security Analysts - Cyber Threat Hunting (CTH)

FIS Management Services, LLC seeks Senior Cyber Security Analysts - Cyber Threat Hunting (CTH) in Jacksonville, FL to drive proactive, hypothesis-based threat hunts across endpoint, network, identity, and cloud telemetry to uncover stealthy adversary activity, directly contributing to reductions in attack dwell time within the FIS environment. Implement independent execution of complex investigations using enterprise-level EDR and SIEM platforms, correlation of multi-source evidence, and rapid scoping, containment, and remediation support for incidents including malware, credential compromise, and unauthorized access. Responsible for clearly documenting hunt outcomes and investigative conclusions, translating threat intelligence and adversary TTPs into high-fidelity behavioral analytics mapped to frameworks such as MITRE ATT&CK. Partner with Security Operations Center, Penetration Testing Teams, and Detection Engineering stakeholders to operationalize successful hunts into durable detections and improved response playbooks. Automate and scale hunting and investigative workflows through scripting languages (PowerShell/BASH/Python), enrichment, and data analysis to improve speed, consistency, and signal quality. Lead threat hunting efforts in newly acquired or integrating M&A environments, requiring rapid assessment of unfamiliar architectures, establishment of baselines, identification of inherited risk and latent compromise, and hunting for pre- and post-acquisition adversary activity while informing integration and risk-reduction strategies. Provide technical direction, standards, and mentorship through threat hunting expertise, supporting FIS’s internal Cyber Security function.

REQUIREMENTS

• Bachelor’s degree or foreign equivalent in Computer Engineering, Computer Science, Cybersecurity, or a related field, and five (5) years of experience in an information security or related role, including
• performing threat hunting, cyber threat intelligence, and incident response activities within enterprise environments, including investigation of malware, credential compromise, and unauthorized access;
• investigating endpoint based security threats using enterprise endpoint detection and response (EDR) platforms, including CrowdStrike Falcon, involving behavioral analysis, process activity, command line execution, and persistence mechanisms;
• developing, tuning, and investigating security detections using security information and event management (SIEM) platforms including Splunk, Azure Sentinel, and QRadar, for analysis of authentication logs, endpoint telemetry, network events, and cloud audit logs;
• investigating malicious infrastructure threats, including analysis of malicious domains, credential harvesting activity, and adversary controlled infrastructure using enterprise security and threat intelligence platforms, including Anomali;
• supporting cybersecurity incident response activities, including incident triage, scoping, containment, and remediation;
• utilizing scripting and automation to support security operations, including use of Python, PowerShell, and Bash for data analysis, alert enrichment, workflow automation, and investigative support;
• consuming and applying threat intelligence, including indicators of compromise (IOCs), adversary tactics, techniques, procedures (TTPs), open source intelligence (OSINT), and mapping activity to MITRE ATT&CK industry recognized frameworks.
• Telecommuting and/or working from home may be permissible pursuant to company policies.

EEOC Statement

FIS is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, genetic information, national origin, disability, veteran status, and other protected characteristics. The EEO is the Law poster is available here supplement document available here For positions located in the US, the following conditions apply. If you are made a conditional offer of employment, you will be required to undergo a drug test. ADA Disclaimer: In developing this job description care was taken to include all competencies needed to successfully perform in this position. However, for Americans with Disabilities Act (ADA) purposes, the essential functions of the job may or must not have been described for purposes of ADA reasonable accommodation. All reasonable accommodation requests will be reviewed and evaluated on a case-by-case basis.

Privacy Statement

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Sourcing Model Recruitment

Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.