Information Systems Security Officer (ISSO)

Eager to join a team where your skills are valued, your growth is nurtured, and your impact is profound? Look no further than Markon, a premier consulting firm deeply dedicated to advancing our nation's most critical missions.

At Markon, we don't just offer jobs - we offer opportunities for personal and professional transformation. Empowering our employees to lead, innovate, and excel, we foster an environment where new ideas are not just welcomed but celebrated. As a perennial Washington Post Top Workplace, we prioritize the well-being and success of our team members, ensuring they can bring their best selves to work.

Headquartered in Falls Church, Virginia, Markon has garnered national recognition for our unwavering dedication to excellence in serving the intelligence community, as well as federal civilian and defense agencies. Our growing reach extends across 17 states, 116 countries, and 5 continents, where our team of dynamic professionals collaborates to deliver unparalleled program and project management services.

Markon values people and the tremendous impact each individual can make - which is why we're consistently recognized as one of the best places to work in federal government consulting. Here, you can help solve the nation's most important challenges, surrounded by colleagues who help you grow, advance, and succeed. We are deeply dedicated to what matters - bringing out the best in each other to advance our clients' missions.

Join us and make a meaningful impact.

Markon is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.

Markon's partner company is seeking an experienced ISSO to support an intelligence customer.

Serve as the Information Systems Security Officer (ISSO) for assigned special systems.
• Support the development and maintenance of cybersecurity documentation, including System Security Plans (SSPs), Risk Assessments, and POA&Ms.
• Coordinate and collaborate with technical and operations teams to ensure security controls are implemented effectively.
• Assist in achieving and sustaining ATOs for systems by working closely with northern-based cybersecurity and compliance teams.
• Conduct continuous monitoring activities, vulnerability management, and incident response support.
• Stay current on applicable security policies, procedures, and tools, including NIST 800-53, RMF, and DoD/IC security frameworks

• Bachelor's degree in Cybersecurity, Information Technology, or a related field.
• Active TS/SCI Full Scope Polygraph
• Minimum of 6 years of relevant cybersecurity experience, with emphasis on ISSO responsibilities.
• Hands-on technical experience in cybersecurity operations and compliance.
• Familiarity with ATO processes and supporting special systems in classified or sensitive environments.
• Strong collaboration skills to partner effectively with geographically distributed teams.

Preferred Qualifications:

• Security certifications such as CISSP, CAP, or Security+.
• Experience with federal or intelligence community environments.
• Knowledge of RMF, NIST guidelines, and continuous monitoring practices.