Senior Information System Security Officer (ISSO)

Independent Software, Inc.; Maryland; On-site; USD 110,000 - 165,000; Full time

Job summary

Independent Software is seeking a Senior Information System Security Officer (ISSO) to uphold the security posture of mission-critical systems and enclaves. You will implement and enforce information assurance policies, monitor security, manage vulnerabilities, and support SSP compliance across engineering, operations, and compliance teams.

The role requires DoD 8570 IAT Level I or higher certification, active TS/SCI with Polygraph, and a strong background in regulated environments.

Qualifications

• Experience supporting information system security programs in classified or regulated environments.
• Knowledge of SSP, security policy implementation, and compliance requirements.
• Experience with vulnerability scanning tools and security assessment processes.
• Familiarity with IDS/IPS technologies, firewalls, and endpoint security solutions.

Responsibilities

• Perform all procedures necessary to ensure the protection of information system assets against unauthorized access, modification, or destruction
• Monitor and analyze IDS to identify and respond to security incidents
• Conduct regular system audits to ensure compliance with security policies, procedures, and SSP requirements
• Perform vulnerability assessments and scans, including user accounts, application access, file systems, and external interfaces
• Develop, test, and support security tools including firewalls, IDS, antivirus solutions, and software deployment tools
• Research, evaluate, and implement new security technologies and solutions
• Develop, implement, and enforce security policies and procedures across systems, applications, and networks
• Support security documentation, including configuration management and SSP maintenance
• Communicate security incidents, alerts, and risks to appropriate stakeholders
• Support security awareness and training initiatives

Skills

InfoSec experience

SSP/Policy compliance

Vulnerability scanning

IDS/IPS & firewalls

System configuration mgmt

Strong communication

Education

High School Diploma/GED + 14 years InfoSec

Bachelor’s in CS/IA/Cybersecurity + 10 years

Job description

What You Will Do

At Independent Software, as a Senior Information System Security Officer (ISSO), you will support the security posture of mission‑critical systems, programs, and enclaves. In this role, you will implement, maintain, and enforce information assurance policies, standards, and procedures to ensure systems remain secure, compliant, and operational. You will work closely with engineering, operations, and compliance teams to monitor system security, conduct audits, manage vulnerabilities, and support accreditation efforts, including System Security Plan (SSP) compliance.

Key Responsibilities

• Perform all procedures necessary to ensure the protection of information system assets against unauthorized access, modification, or destruction
• Monitor and analyze Intrusion Detection Systems (IDS) to identify and respond to security incidents
• Conduct regular system audits to ensure compliance with security policies, procedures, and SSP requirements
• Perform vulnerability assessments and scans, including user accounts, application access, file systems, and external interfaces
• Develop, test, and support security tools including firewalls, IDS, antivirus solutions, and software deployment tools
• Research, evaluate, and implement new security technologies and solutions
• Develop, implement, and enforce security policies and procedures across systems, applications, and networks
• Support security documentation, including configuration management and SSP maintenance
• Communicate security incidents, alerts, and risks to appropriate stakeholders
• Support security awareness and training initiatives

Required Skills and Qualifications

• Experience supporting information system security programs in classified or regulated environments
• Knowledge of System Security Plans (SSP), security policy implementation, and compliance requirements
• Experience with vulnerability scanning tools and security assessment processes
• Familiarity with IDS/IPS technologies, firewalls, and endpoint security solutions
• Understanding of system configuration and document management processes
• Strong analytical, troubleshooting, and problem‑solving skills
• Strong written and verbal communication skills
• Ability to work both independently and within a team environment

Education and Experience

• High School Diploma or GED and fourteen (14) years of relevant Information System Security experience; OR
• Bachelor’s degree in Computer Science, Information Assurance, Cybersecurity, or a related discipline and ten (10) years of relevant experience

Certifications

• Certification in compliance with the requirements of the DoD 8570 IAT Level I or higher is required

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.

• 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.