Senior Information Systems Security Officer (ISSO)

Job Overview The Senior Information Systems Security Officer (ISSO) supports complex Federal technology programs and oversees, manages, tracks, and reports on Government program‑level information security to protect systems, facilities, and infrastructure. They have at least 5 years of ISSO experience on complex mission‑critical programs and the ability to closely collaborate with Government leaders, facility managers, software development teams, and Government security offices. Responsibilities Serve as the primary security point of contact for assigned federal information systems Develop, implement, and maintain System Security Plans (SSPs) in accordance with NIST SP 800‑53 , RMF , and agency‑specific requirements Ensure continuous compliance with FISMA , FedRAMP , and organizational security policies Support system Authorization to Operate (ATO) activities, including initial authorizations, renewals, and continuous monitoring Conduct security control assessments and analyze system risks to confidentiality, integrity, and availability Identify security vulnerabilities and manage remediation efforts through Plans of Action and Milestones (POA&Ms) Collaborate with system owners and engineers to implement risk‑based security controls Provide security guidance during system development, modernization, and operational phases Execute and maintain continuous monitoring programs , including vulnerability scanning, log review, and control validation Review and analyze scan results (e.g., Nessus, Tenable) and track remediation progress Monitor compliance artifacts and evidence to support audits, inspections, and assessments Support cybersecurity incident response activities, including investigation, documentation, and reporting Ensure timely reporting of incidents in accordance with federal and agency procedures Work with ISSMs, program managers, and federal customers Collaborate with our clients to solve tough problems, delivering outstanding client service, and achieving mission results Apply excellent consulting, business analysis, and communications skills to quickly identify problems, analyze challenges, and recommend solutions to our team and our clients Required Qualifications At least 5 years of direct ISSO experience in overseeing and interacting within a portfolio of security assets and systems at a Government-program level that involves multiple systems and facilities Direct experience with senior clients and stakeholder engagement and delivering work products for clients in a complex environment Proven to be flexible and thrive in a dynamic, ambiguous, and complex work environment and manage multiple tasks and projects simultaneously Outstanding written and oral communication and collaboration skills and strong leadership potential Ability to collaborate and work effectively remotely and in‑person Technologically savvy, especially with Microsoft products and use of collaboration tools like SharePoint Desire to join a consulting firm and learn business concepts; loves to collaborate and reach out to get involved in company events, offerings, and special projects Ability to work in the Washington, DC metro area and travel to different locations Clearance: US Citizenship only (no dual citizenship) Education: Bachelor’s degree Critical Skills: Executive presence, entrepreneurial spirit, strong work ethic, collaborative mindset, excellent problem‑solving skills, and interest in working in a consulting firm. Interest in working on assignments outside of one project is strongly desired Preferred Qualifications Certifications: CISSP Experience working with CISA, CISOs, ISSMs, and senior leadership Total Rewards The projected salary range for this position is $115,000 - $135,000. This range takes into account the wide variety of factors that are considered in making compensation decisions, including but not limited to: skill sets and expertise, experience, education, training, certifications, contract and client requirements (if applicable), and other business and organizational needs. At Arc Aspicio, it is not typical for an individual to be hired at or near the top of the range for their role, and compensation decisions are dependent on the facts and circumstances of each case. Location Requirement All candidates must live in the Washington, DC area at the time of employment. Our positions are based in the DC metro area and require employees to live in DC, VA, and MD within commuting distance of our client sites and DC office. Equal Opportunity Employer Equal Opportunity Employer/M/F/D/V #J-18808-Ljbffr