Cyber Security Analyst Tier III

General Dynamics Information Technology•Bossier City, LA

1d•Onsite

About The Position

As a senior member of the SOC team supporting the Virginia Information Technology Agency (VITA), the Tier III analyst serves as the primary escalation authority for high-severity security incidents and owns the full escalation chain from initial triage through containment, remediation, and post-incident review. A core function of this role is building and maintaining operational Splunk dashboards, automated detection workflows, and correlation searches that improve SOC efficiency and threat visibility. The Tier III analyst brings deep hands-on experience working in Splunk at an advanced level and provides threat hunting and incident response expertise across the team. The role may also require mentoring junior analysts and operating third-party toolsets within the client environment.

Requirements

8 or more years of experience in cybersecurity operations
Splunk experience — advanced SPL, dashboard development, automated alerting, and correlation search creation in an operational SOC environment
CyberArk experience — privileged access management in a government or enterprise SOC environment
Qualifying certification to meet DoW 8140/DCWF CSSP Analyst requirements within 6 months of start: CEH, CFR, CCNA Cyber Ops, CCNA-Security, CySA+, GCIA, GCIH, GICSP, Cloud+, SCYBER, or PenTest+

Responsibilities

Incident Response & Threat Operations Lead complex investigations and incident response (Tier III ownership): pivoting across identity, endpoint, network, email, cloud, and SaaS telemetry to drive containment and remediation
Provide expertise with Indicators of Compromise (IOCs), Tactics, Techniques, and Procedures (TTPs), threat hunting, and threat intelligence; own customer-facing escalation and remediation activities
Recognize successful and unsuccessful intrusion attempts; triage security events and accurately prioritize and escalate incidents per established runbooks
Detect the full spectrum of known cyberattacks (DDoS, malware, phishing, ransomware, and others) and correlate events across capabilities to identify attacks and breaches
Examine malware analysis reports to correlate similar events across incidents; document and report actions taken by malicious actors in customer networks
Recommend appropriate methods of system remediation and threat mitigation; prepare incident reports detailing analysis methodology and results
Build, maintain, and optimize Splunk dashboards and reports that provide operational visibility into threat activity, SOC performance metrics, and incident trends for analysts and leadership
Develop and maintain automated detection workflows, correlation searches, and alert actions in Splunk to reduce analyst workload, minimize false positives, and accelerate response to high-priority threats
Write and maintain SPL searches, scheduled reports, and lookup-driven workflows; leverage scripting (Python, PowerShell) to extend Splunk capabilities and support security automation where needed
Conduct log and system analysis for network and security devices; create and update detection rules and signatures in security tools and applications
Document emerging threat intelligence and reported IOCs for security tool integrations
Align detections and logging with frameworks and controls: NIST 800-53, NIST CSF, PCI DSS, HIPAA, and SOX as applicable to the customer environment
Develop and tune detection content — including use cases, correlation rules, and alert logic — to improve fidelity and reduce noise across the SOC environment
Analyze and act on intelligence information to secure customer networks and devices
Working knowledge of scripting (Python, PowerShell, or Bash) for security automation, log parsing, and workflow integration; ability to read and modify scripts to support SOC operations
Support automation efforts that reduce manual analyst burden, improve detection fidelity, and accelerate incident response timelines.
Document and maintain runbooks and playbooks; mentor Tier I/II analysts as needed and contribute to post-incident retrospectives and continuous detection improvements
Develop lessons learned documentation, reporting, and SOPs for incident response
Serve as team/task lead as required; coach less-experienced analysts and model best practices across the escalation chain
Maintain current understanding of cybersecurity best practices and motivate team members to expand knowledge and capabilities