Senior Cyber Threat Hunting Specialist IRES - HSV

Amentum•Huntsville, AL

6d•$149,000 - $158,000•Onsite

About The Position

The Senior Cyber Threat Hunting Specialist supports the Missile Defense Agency (MDA) on the Integrated Research and Development for Enterprise Solutions (IRES) contract. The candidate will serve as the primary Subject Matter Expert (SME) on advanced threats for the MDA Cyber Security Service Provider (MDA CSSP), collaborating with Defensive Cyber Operations, Cyber Threat Intelligence (CTI), Cyber Threat Emulation (CTE), and Forensics teams to drive unified defensive strategies. They will develop and execute intelligence-driven hunt hypotheses to detect Advanced Persistent Threats (APTs) and anomalies that bypass traditional security controls, map adversary Tactics, Techniques, and Procedures (TTPs) using the MITRE ATT&CK framework, and integrate tactical threat intelligence into hunt operations. The role involves analyzing network traffic, host-based logs, and endpoint telemetry using SIEM, EDR, and packet capture tools, correlating asset, threat, and vulnerability data against known adversary exploits and techniques to determine impact and improve network defensive posture. The specialist will leverage actionable Cyber Threat Intelligence data to search for indicators of compromise, assist in the development of SIEM content/signatures, and make recommendations to improve detection capabilities, tune alerts, and close security gaps. They will coordinate with CSSP subscribers to develop configurations, rules, and signatures for cyber security toolsets, and to notify, investigate, and remediate discrepancies in security logging and CSSP alignment. Confirmed threats will be transitioned to Defensive Cyber Operations, providing forensic artifacts, root cause analysis, and actionable intelligence during active investigations. The role also includes creating and maintaining custom scripts for automation, providing technical mentorship, conducting training sessions, and participating in tabletop exercises. The specialist will review data of ongoing intrusions or cybersecurity incidents, report, analyze, and document findings, and provide support to insider threat and law enforcement/counterintelligence agencies. They will advise security leadership and Defensive Cyber Operations teams on emerging adversary capabilities, translating hunt findings into strategic recommendations, and developing comprehensive documentation for intelligence dissemination.

Requirements

6 years of combined experience in Defensive Cyber Operations (DCO), to include enterprise-level security monitoring, incident response, and threat hunting
2 years of experience in management or leadership in a team environment
Experience applying the MITRE ATT&CK framework to security operations or intelligence analysis
One, or more, of the following certifications: CFR, CySA+, GCFA, GCIA, GICSP
An active DoW Top Secret with SCI Eligibility

Nice To Haves

Master's degree, or higher, in Cybersecurity, Computer Science or related field
One or more of the following advanced cybersecurity certifications: Offensive Security: OSCP, PNPT, GPEN | Forensics/Incident Response: GCFA, GCFE, GCIH, EC-Council Certified Hacking Forensic Investigator (CHFI) | Threat Hunting/Analysis: GIAC Certified Cyber Threat Intelligence (GCTI)
An active DoD Top Secret clearance
Experience with security analysis and solutions in a WAN/LAN environment to include Routers, Switches, Network Devices, and Operating Systems (e.g., Windows, and Linux)
Experience with other Security Operations Centers (SOC)/DCO tools/applications, such as Firewalls, Intrusion Detection Systems / Intrusion Prevention Systems, Network Security Manager, Forward Proxy, Spam Firewall, etc.
Experience analyzing security compliance scans performed across a WAN (ACAS/Nessus preferred)
Experience analyzing network and host-based threats (ESS preferred)
Able to mentor and train personnel in an evolving, high-paced environment
Familiar with DoD Security Operations Centers (SOC)
Familiar with DCO/Cybersecurity Service Provider (CSSP)-guiding security policies and procedures
Demonstrable experience in offensive security operations, such as penetration testing, red teaming, or exploit development
Experience with advanced digital forensics, including host-based and memory analysis
Proficient in scripting and data analysis with languages such as Python, PowerShell, Bash, or KQL to automate tasks and parse large datasets
Familiar with the intelligence cycle and its application to cybersecurity operations
Experience with hunt-centric security platforms, including industry-standard Endpoint Detection and Response (EDR), Security Information and Event Management (SIEM), and Security Orchestration, Automation, and Response (SOAR) tools
Familiar with the application of Artificial Intelligence (AI) and Large Language Models (LLMs) in cybersecurity, including the ability to leverage AI-driven security tools and critically assess their output
Experience with MS Office 365 suite applications (Word, Excel, PowerPoint, Visio, etc.)
Able to multi-task and prioritize various projects and assignments in a dynamic work environment to meet scheduled/unscheduled customer requests
Willing to support teams in a 24/7 operational environment and respond quickly to emergencies as needed
Excellent communication skills, with the ability to translate complex technical findings into concise and actionable intelligence for senior leadership and non-technical stakeholders

Responsibilities

Serve as the primary Subject Matter Expert (SME) on advanced threats for the MDA Cyber Security Service Provider (MDA CSSP), collaborating with Defensive Cyber Operations, Cyber Threat Intelligence (CTI), Cyber Threat Emulation (CTE), and Forensics teams to drive unified defensive strategies
Develop and execute intelligence-driven hunt hypotheses to detect Advanced Persistent Threats (APTs) and anomalies that bypass traditional security controls
Map adversary Tactics, Techniques, and Procedures (TTPs) using the MITRE ATT&CK framework and integrate tactical threat intelligence into hunt operations
Analyze network traffic, host-based logs, and endpoint telemetry utilizing SIEM, EDR, and packet capture tools
Correlate asset, threat, and vulnerability data against known adversary exploits and techniques to determine impact and improve network defensive posture
Leverage actionable Cyber Threat Intelligence data to search for indicators of compromise and assist in the development of SIEM content/signatures to detect known attack patterns and make recommendations to improve detection capabilities, tune alerts, and close security gaps
Coordinate with CSSP subscribers to develop current configurations, rules, and signatures for cyber security related toolsets
Coordinate with CSSP subscribers to notify, investigate, and remediate discrepancies in security logging and CSSP alignment
Transition confirmed threats to Defensive Cyber Operations, providing forensic artifacts, root cause analysis, and actionable intelligence during active investigations
Create and maintain custom scripts (e.g., PowerShell, Bash, Elastic KQL, ES|QL) to automate data parsing, log aggregation, and routine hunt tasks
Provide technical mentorship, conduct training sessions, and participate in tabletop exercises to elevate the team's overall capability in advanced threat detection
Review data of ongoing intrusions or cybersecurity incidents and report, analyze, and document/report the findings in accordance with CJCSM 6510.01B guidelines
Provide support to internal and external insider threat and law enforcement / counterintelligence (LE/CI) agencies during cyber incidents / investigations
Advise security leadership and Defensive Cyber Operations teams on emerging adversary capabilities, translating tactical hunt findings into strategic recommendations for infrastructure hardening
Develop and maintain comprehensive documentation, including hunt runbooks, methodologies, and technical debriefs, ensuring actionable intelligence is effectively disseminated across multiple departments