ISSO Lead — Top Secret/SCI with Full Scope Poly

Base-2 Solutions; Maryland; On-site; USD 110,000 - 170,000; Full time

Benefits offered by this job

100% company-paid medical premiums for

100% company-paid dental premiums for

100% company-paid vision premiums for

401(k) with 4% match + 4% non-elective

Up to 20 days PTO

11 paid floating holidays

Job summary

Base-2 Solutions is seeking an Information Systems Security Officer (ISSO) to safeguard mission-critical systems by enforcing security policies, maintaining documentation, and supporting compliance efforts. The candidate will work across teams and government stakeholders to drive security initiatives forward.

The ideal candidate will have hands-on experience with RMF, NIST controls, and security tooling, plus strong communication and coordination skills in a fast-paced, on-site environment in

Qualifications

• Experience with security frameworks and policies: NIST SP 800-53, RMF, ICD 503, CNSS, DoD STIGs, FISMA, FedRAMP.
• Experience managing security documentation: SSPs, POA&Ms, Security Controls Assessment artifacts, SARs, SCTM.
• Experience with security tools such as ACAS, Nessus, Splunk, HBSS, eMASS, Xacta.
• Knowledge of security technologies: Firewalls, SIEMs, VPNs, IDS/IPS, DLP, PKI, Multi-Factor Authentication.
• Experience with operating systems: Windows, Linux, Unix, macOS.
• Experience with Cloud environments (AWS, Azure, Google Cloud) and cloud security controls.
• Familiarity with vulnerability scanning, security testing, and incident response processes.
• Experience with collaboration tools like JIRA, Confluence, ServiceNow.
• Strong knowledge of system authorization process, audit support, and compliance reporting.
• Security certifications such as CISSP, CAP, Security+, CISM, CEH, AWS Security Specialty.

Responsibilities

• Ensure system compliance with federal, DoD, and IC cybersecurity regulations and standards (NIST, RMF, ICD 503, CNSS, DoD STIGs).
• Maintain and update SSPs, SARs, POA&Ms, and Continuous Monitoring Plans.
• Coordinate and support security assessments, audits, and inspections.
• Conduct risk assessments and vulnerability analysis with mitigation recommendations.
• Facilitate RMF-based system authorization activities.
• Monitor and report on security posture, incidents, and remediation.
• Collaborate with ISSEs, admins, and PMs to integrate security requirements.
• Provide security awareness training to users.
• Serve as liaison with government customers for updates and issues.

Skills

Security regulations knowledge

Documentation

Communication skills

Stakeholder collaboration

Tools

ACAS

Nessus

Splunk

HBSS

eMASS

Xacta

JIRA

Confluence

ServiceNow

AWS

Azure

Google Cloud

Job description

Base-2 Solutions is seeking an Information Systems Security Officer (ISSO) to safeguard mission-critical systems by enforcing security policies, maintaining documentation, and supporting compliance efforts. The candidate will work across teams and government stakeholders to drive security initiatives forward.

The ideal candidate will have hands-on experience with RMF, NIST controls, and security tooling, plus strong communication and coordination skills in a fast-paced, on-site environment in