Senior Information Systems Security Officer

Independent Software; Corridor North (MD); On-site; USD 120,000 - 190,000; Full time

Job summary

Independent Software seeks a Senior Information Systems Security Officer to provide senior-level cybersecurity and information assurance support for classified systems supporting IC and DoD missions.

You will maintain security posture through RMF processes, risk assessments, SSP development, and system authorization activities, collaborating with technical teams and stakeholders to ensure compliance and strengthen resilience.

Qualifications

• Bachelor’s degree preferred; 12+ years of relevant experience strongly preferred; 10+ years hands-on ISSO experience in IC/DoD environments required.
• Must meet DoD IAM Level II+ (CASP+ or CISSP) certification requirements.
• Active TS SCI with polygraph required.
• Experience with RMF, security authorization, risk management, and vulnerability assessments.

Responsibilities

• Maintain security posture of classified IC/DoD information systems.
• Develop, maintain, and manage a high volume of SSPs.
• Conduct vulnerability and risk assessments and support mitigations.
• Support RMF and system authorization processes.
• Manage security configurations and assess changes.
• Ensure compliance with security policies, frameworks, standards, and procedures.
• Utilize customer security tools and processes to support security and compliance.
• Collaborate with technical teams to identify vulnerabilities and strengthen system security.
• Support security activities involving servers, IA technologies, networking protocols, and network services.

Skills

RMF knowledge

SSP development

Vulnerability assessment

System authorization

Security configurations

Regulatory compliance

Stakeholder communication

Education

Bachelor’s degree in Computer Science, Information Assurance, Information Security, or related discipline

Tools

LatteArt

Biscotti

Xacata

STE/STN

Job description

What You Will Do:

At Independent Software, as a Senior Information Systems Security Officer, you will provide senior-level cybersecurity and information assurance support for classified systems supporting IC and DoD missions. You will maintain and strengthen system security posture through security operations, risk and vulnerability assessments, configuration management, security documentation, and system authorization activities.

In this role, you will work closely with technical teams and stakeholders to ensure systems remain compliant with applicable security requirements while identifying vulnerabilities and implementing improvements that strengthen system resilience.

Key Responsibilities:

• Maintain the security posture of classified IC/DoD information systems
• Develop, maintain, and manage a high volume of System Security Plans (SSPs)
• Conduct vulnerability and risk assessments and support mitigation activities
• Support RMF and system authorization processes
• Manage security configurations and assess the security impact of system changes
• Ensure compliance with applicable security policies, frameworks, standards, and procedures
• Utilize customer security tools and processes to support system security and compliance
• Work with technical teams to identify vulnerabilities and strengthen system security
• Support security activities involving servers, IA technologies, networking protocols, and network services

Required Skills and Qualifications:

• 10+ years of hands-on ISSO/information security experience supporting IC or DoD environments
• Strong experience developing and maintaining SSPs
• Strong knowledge of RMF, security authorization, vulnerability assessment, and risk management
• Knowledge of customer security tools, policies, frameworks, and system authorization processes
• Working knowledge of servers, Information Assurance technologies, networking protocols, and network services
• Experience with customer security tools and environments such as LatteArt, Biscotti, Xacata, and STE/STN
• Strong communication skills and ability to work effectively with technical stakeholders

Education and Experience:

• Bachelor’s degree in a relevant technical discipline preferred
• 12+ years of relevant experience strongly preferred
• 10+ years of hands‑on ISSO/information security experience supporting IC or DoD environments required

Education and Experience:

Candidates must meet one of the following:

• Bachelor of Science degree in Computer Science, Information Assurance, Information Security, or a related discipline plus 12 or more years of relevant experience
• An additional four (4) years of relevant experience may be considered in lieu of a degree on a case‑by‑case basis
• Must have 10+ years of direct experience as an ISSO or a combination of ISSO and other security‑related roles supporting IC or DoD programs and contracts of similar scope, type, and complexity

Certifications:

• Must meet DoD 8140.03 IAM Level II or higher certification requirements, such as CASP+ or CISSP

Clearance Requirement:

• Must possess an active TS SCI with appropriate Polygraph to be considered for this role

Why Choose Independent Software:

At Independent Software, our people are the mission. We’ve built a company around collaboration, integrity, and innovation and we make sure our team has the tools and support to grow, succeed, and thrive.

When you join us, you will:

• Support critical national security missions that matter
• Be part of a close‑knit, employee‑first culture where your voice is heard
• Expand your skills through ongoing training, mentorship, and career development
• Enjoy competitive compensation, generous benefits, and work‑life balance

We’re an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.