ISSO Cybersecurity Engineer, Senior

ISSO Cybersecurity Engineer, SeniorThe Opportunity:This is your opportunity to own and sustain RMF governance activities for DoD information systems, ensuring authorization artifacts, eMASS records, control implementation evidence, and remediation activities accurately reflect the system’s cybersecurity posture. System and device hardening, security patching and ability to analyze STIG, SCAP, and ACAS findings, POA&Ms, architecture, inherited controls, compensating controls, and technical evidence.What You'll Work On:Manage RMF lifecycle activities and authorization-package maintenance.Maintain SSP, ConMon Plan, IRP, CMP, control narratives, diagrams, inventories, and supporting evidence.Perform eMASS package administration and quality assurance.Coordinate monthly POA&M updates, evidence validation, milestone tracking, and closure.Analyze NIST SP 800-53 Rev. 5 controls and translate requirements into system-specific implementation statements.Develop Security Impact Assessments for proposed system and configuration changes.Develop or coordinate ISAs, MOAs, and MOUs as required for system interconnections.Support T-Req and data-connection reviews and coordinate with ISSM, engineers, and system owners and review T-Req or connection tickets for completeness.Prepare packages and stakeholders for continuous monitoring and authorization reviews.Analyze source and destination, ports, protocols, services, data sensitivity, encryption, authentication, boundary protection, and mission need.Identify required security artifacts, approvals, firewall, network actions, and interconnection documentation.Coordinate with ISSM, network and security engineer, system owners, and requestors.Maintain status, metrics, aging reports, and escalation paths.Identify high-risk or nonstandard connection requests for deeper assessment.Join us. The world can’t wait. You Have:   5+ years of experience with DoD RMF or cybersecurityExperience using eMASS to address security controls, create POA&Ms, and upload artifacts such as STIG checklists or ACAS scansExperience with the administration of Windows, Linux, AWS Cloud and containerization systems, and software configurationKnowledge of NIST SP 800-37, NIST SP 800-53 Rev. 5, DoDI 8510.01, POA&M management, and DoD authorization practicesAbility to validate STIG and vulnerability findings, false positives, risk acceptances, mitigations, remediation evidence, and closure packages using ACAS and Nessus scans, STIGs, SCAP, SCC, vulnerability results, configuration reviews, system queries, and manual proceduresAbility to analyze system boundaries, data flows, external interfaces, interconnections, inherited controls, and common-control dependenciesTS/SCI clearanceBachelor's degree in a technical field such as Engineering or CyberSecurity+ Certification Nice If You Have:   Experience with technical writing and evidence-validation skillsExperience with ticket and workflow platforms and disciplined documentationKnowledge of TCP, IP, ports, protocols, firewalls, segmentation, PKI, encryption, identity and access management, and DoD network security conceptsKnowledge of technical control implementationAbility to read and design network and system architecture diagramsAbility to evaluate ICAM controls, including MFA, PKI, CAC authentication, privileged access, account management, separation of duties, and least privilegeAbility to distinguish routine connectivity from connections that alter authorization boundary or risk postureDoD 8570 or 8140-aligned Certification such as CISSP or CASP+ CertificationClearance: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.  CompensationAt 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 $99,000.00 to $225,000.00 (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 StatementAs 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 interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud.Candidate AI Usage PolicyAI is a part of our daily work at Booz Allen, and we are committed to the responsible and ethical use of AI tools. However, we want to ensure a fair candidate process based on your own skills and knowledge. As part of this commitment, the use of artificial intelligence (AI) or other tools to assist with responses during interviews (whether in-person or virtual) is prohibited unless permission is explicitly provided. Work ModelOur people-first culture prioritizes the benefits of collaboration, whether it occurs in person or virtually. To support engagement and effective communication, employees working virtually are generally expected to have their cameras on during meetings.Remote: If this position is listed as remote, there may still be occasions when you are required to work in person at a Booz Allen or customer facility.Hybrid: If this position is listed as hybrid, you will be expected to work from a Booz Allen facility frequently, in alignment with leadership expectations and the needs of the role. You may also be required to work from or visit a customer facility.Onsite: If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.Commitment to Non-DiscriminationAll 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.SummaryLocation: Aberdeen Proving Ground, MD; Alexandria, VAType: Full time