Information Systems Security Engineer

Job Number: R0233487

Information Systems Security Engineer

The Opportunity:

In this role, you will support a Cyber team working with the Army Intelligence community. We're looking for a self-starter who is proactive in providing engineering solutions and can be adaptable to changing requirements. The role is not primarily client-facing, but you should expect to have some interface with stakeholders. This position is located in Fort Belv oir , VA.

What You'll Work On:

• Configure and maintain Nessus Scanners and Tenable Security Center ( SC ) resources. Manage scan zones to ensure comprehensive coverage across varied network enclaves.
• Utilize Axonius to aggregate data from Active Directory, Cisco ISE, and ACAS to identify unmanaged assets or shadow IT missing from standard scanning cycles.
• Develop and distribute tailored vulnerability reports and dashboards for ISSOs, focusing on Cyber Tasking Orders ( CTOs ) , Critical and High vulnerabilities, and STIG non-compliance trends.
• Audit Cisco ISE policies to enforce 802.1X authentication, ensuring only authorized devices access the production environment.
• Optimize Elasticsearch and ingest pipelines to parse logs from network devices, Cisco ISE, and Active Directory for real-time security alerting and historical trend analysis.
• C ond uct weekly audits of Active Directory logs to identify anomalous account behavior, privilege escalation attempts, or unauthorized changes to Group Policy Objects ( GPOs ) .
• Perform manual and automated STIG checks on network infrastructure, using tool-based evidence such as ACAS or ISE to support Risk Management Framework ( RMF ) authorization packages.
• Author technical justifications and remediation plans for vulnerabilities that cannot be immediately mitigated due to operational constraints.
• Author and maintain localized "How-To" documentation for tool-specific workflows, such as "Auditing a Cisco Router" or "Configuring a credentialed scan in ACAS."
• Audit firewall rules and ACLs for ACAS scanning traffic and ISE RADIUS / TACACS traffic across internal enclaves.
• Present critical or high priority threats and vulnerabilities on the network to stakeholders for awareness, action, and remediation.
• Analyze digital evidence and investigate computer security incidents to derive useful information in support of system or network vulnerability mitigation.
• Assess the effectiveness of cybersecurity measures utilized by system ( s ) .
• Assess threats to and vulnerabilities of computer system ( s ) to develop a security risk profile by leveraging existing tools and dashboards.
• Manage and design the network scanning process end-to-end.
• Assist ISSOs in developing vulnerability management processes for applicable systems, coordinate input from ISSOs and ISSMS into scanning processes, and recommend best practices to ISSOS, ISSMS, and PM based on scanning findings.
• Build out applicable network architecture leveraging existing and approved tools.
• Participate and offer input for policies , standards, procedures, and risk management.
• Identify, assess, and recommend cybersecurity or cybersecurity-enabled products for use within a system.
• Recommend security measures that provide confidentiality, integrity, availability, authentication, and nonrepudiation.
• Perform security reviews and identify security gaps.
• Participate in client deliverables as requested by the ISSM or PM.

Join us. The world can't wait.

You Have:

• 7+ years of experience in information assurance ( IA )
• Experience with ACAS, CISCO ISE, and Cisco Networking
• Experience with Nessus Scanners and Tenable Security Center resources
• Experience performing proactive solution engineering with flexibility for changing requirements
• Knowledge of how to perform a STIG check on a network
• Knowledge of Network Accreditation Processes
• Active TS/SCI clearance; willingness to take a polygraph exam
• HS diploma or GED
• IAT Level III Certification

Nice If You Have:

• Experience with Axonius
• Experience with TACACS+
• Experience with Active Directory
• Experience with Elasticsearch
• Knowledge of CTOs
• CASP+ or Security X Certification

Clearance:

Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information ; TS/SCI clearance is required.

Compensation

At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page.

Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $77,600.00 to $176,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date.

Identity Statement

As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud.

Work Model

Our people-first culture prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely.

• If this position is listed as remote or hybrid, you'll periodically work from a Booz Allen or client site facility.
• If this position is listed as onsite, you'll work with colleagues and clients in person, as needed for the specific role.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.