Cyber Security Analyst (ISSO)

General Dynamics Information Technology, Inc.; United States; On-site; USD 84,000 - 114,000; Full time

Job summary

General Dynamics Information Technology, Inc. is seeking a Cyber Security Analyst (ISSO) to maintain the security posture, continuous monitoring, and regulatory compliance of DoD information systems.

You will work with ISSMs, system owners, and engineering teams to enforce DoD baselines and controls, using Splunk, ACAS, and ePO to drive real-time telemetry analysis and remediation. The role emphasizes RMF/POA&Ms in eMASS, with requirements for DoD clearance, IAT Level III certification, and

Qualifications

• Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, or a related discipline.
• 7+ years of progressive cybersecurity, information assurance, or security operations experience.
• Active DoD 8570.01-M / DoD 8140 baseline certification meeting IAT Level III.

Responsibilities

• SIEM, Security Analytics & Continuous Monitoring: perform daily security event reviews and log analysis across servers and networks.
• Vulnerability Management & Endpoint Administration: operate ACAS/Tenable scans and manage plugin updates.
• Enclave Boundary Defense & Security Administration: monitor gateways, firewalls, IDS/IPS and coordinate changes.
• RMF & eMASS Administration: support RMF activities, maintain SSPs and POA&Ms in eMASS.

Skills

Cybersecurity Compliance

Information Systems

Information System Security

Vulnerability Scanning

Education

Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, or a related discipline

Tools

Splunk Enterprise/ES

Tenable/ACAS

Trellix ePO

eMASS

Job description

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret Public Trust/Other Required: None Job Family: Cyber and IT Risk Management Job Qualifications: Skills: Cybersecurity Compliance, Information Systems, Information System Security, Vulnerability Scanning Certifications: None Experience: 6 + years of related experience US Citizenship Required: Yes

Job Description: The Cyber Security Analyst (ISSO) is responsible for maintaining the operational security posture, continuous monitoring, and regulatory compliance of assigned Department of Defense (DoD) information systems and coalition network environments. The Cyber Security Analyst (ISSO) works closely with the Information System Security Manager (ISSM), system owners, and network/systems engineering teams to enforce DoD cybersecurity baselines and technical controls throughout the system lifecycle. This role requires hands-on experience with core enterprise cybersecurity tools, including Splunk Enterprise/Enterprise Security (ES), Tenable/ACAS, and Trellix ePolicy Orchestrator (ePO), to drive real-time telemetry analysis, vulnerability management, endpoint compliance, and continuous monitoring (ConMon) under the NIST Risk Management Framework (RMF). All compliance tracking, documentation, and authorization management for assigned systems is executed within eMASS.

Primary Responsibilities

• 1. SIEM, Security Analytics & Continuous Monitoring Perform daily security event reviews, log analysis, and system auditing across servers, network infrastructure, and operating systems in coalition enclaves. Develop and execute complex Search Processing Language (SPL) queries in Splunk Enterprise/ES to aggregate and correlate events across multiple data sources. Design, implement, and maintain Splunk dashboards, visualizations, and alerts to detect anomalous activity, policy violations, and unauthorized access attempts. Troubleshoot log ingestion, forwarding, parsing, and telemetry issues, ensuring comprehensive and accurate data collection. Validate NTP time synchronization and log integrity across distributed network devices and servers. Ensure audit records are collected, retained, and protected in accordance with DoD policies and applicable regulations.
• 2. Vulnerability Management & Endpoint Administration Operate and maintain the Assured Compliance Assessment Solution (ACAS) utilizing Tenable Security Center and Nessus scanners across enclave infrastructure. Configure, schedule, and execute authenticated/unauthenticated credentialed scans for servers, network devices, databases, and workstations. Manage ACAS scan policies, credentials, and plugin updates to ensure comprehensive vulnerability coverage. Analyze scan results, validate findings, triage false positives, and track remediation in support of Plans of Action and Milestones (POA&Ms). Administer Trellix ePO within the enterprise enclave, including agent deployment, policy enforcement, update scheduling, and verification of signature/definition compliance. Produce endpoint compliance metrics and operational reports for leadership, system administrators, and inspection teams.
• 3. Enclave Boundary Defense & Security Administration Monitor and maintain the security posture of enclave gateways, firewalls, boundary devices, and intrusion detection/prevention systems (IDS/IPS). Help protect enclave resources against unauthorized access, modification, destruction, or disclosure. Review change requests and conduct Security Impact Analyses (SIA) for system modifications, port/protocol changes, and routing updates. Coordinate with systems and network administrators to ensure security and monitoring requirements are integrated into system deployments and changes.
• 4. Risk Management Framework (RMF) & eMASS Administration Support end-to-end RMF activities in eMASS, including maintaining System Security Plans (SSPs), continuous monitoring strategies, and security control implementation statements. Populate, update, and manage system milestones, control assessments, test results, and POA&Ms within eMASS. Verify implementation and enforcement of DISA Security Technical Implementation Guides (STIGs) and Security Requirements Guides (SRGs) across assigned systems.

Required Qualifications

• Education & Experience Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, or a related technical discipline.Equivalent relevant experience, military training, or technical certifications may be considered in lieu of a degree. 7+ years of progressive experience in cybersecurity, information assurance, or security operations supporting DoD systems and networks.
• Certifications Active DoD 8570.01-M / DoD 8140 baseline certification meeting IAT Level III
• Technical Experience Hands-on operational experience with Splunk Enterprise and/or Splunk Enterprise Security (ES), including SPL query development, correlation searches, dashboard creation, alerting, and forwarder troubleshooting. Demonstrated experience configuring, executing, and troubleshooting ACAS/Tenable scans; managing plugins and credentials; and assessing vulnerability findings in support of POA&M management. Experience administering Trellix ePO in an enterprise environment, including policy tuning, agent management, and endpoint compliance reporting. Proven proficiency using eMASS as the primary RMF governance tool for managing packages, documenting controls, uploading test results, and managing POA&Ms. In-depth experience implementing and remediating DISA STIGs and SCAP benchmarks for Windows/Linux systems, applications, and network infrastructure.
• Clearance Active DoD Secret security clearance (or higher), with the ability to maintain the clearance as a condition of employment.

Preferred Qualifications

• Active IAT Level III certification (e.g., CASP+ CE, CISSP, or equivalent).
• Prior experience securing and monitoring coalition or partner network enclaves (e.g., CENTRIXS, BICES, Mission Partner Environments [MPE]).
• Advanced proficiency with eMASS package management, workflow transitions, and artifact mapping.
• Tool-specific certifications such as Splunk Certified Power User/Enterprise Admin or Tenable Certified Nessus Auditor.
• Scripting experience (e.g., Bash, Python, PowerShell) to support automation of log parsing, reporting, and administrative workflows.
• Strong written and verbal communication skills, including experience presenting technical risk and compliance posture to ISSMs, system owners, and other stakeholders.

Salary Range

#DefenseOCONUS The likely salary range for this position is $83,927 - $113,549. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range. Total compensation for international positions varies by tax, social security, and immigration statuses, as well as location. Generally, an international assignment may include allowances, premium uplifts, and/or relocation or transportation benefits, above base salary range noted.

Schedule & Travel

Scheduled Weekly Hours: 40 Travel Required: Less than 10% Telecommuting Options: Onsite Work Location: International Additional Work Locations:

Benefits

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Identity Verification Process

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission‑ready capabilities in AI, cloud, cyber and software development. Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc.

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