Senior Information Systems Security Officer (ISSO)

Interested in working in an innovative, collaborative environment with motivated, social people? At Arc Aspicio, you can join a leading consulting firm that specializes in human capital, data analytics, management, and strategy professional services to deliver compelling solutions. Consultants join our practice focused on mission-critical projects and quickly learn to contribute to and grow our company across multiple projects. We invest in hiring, mentoring, and training smart, diverse, and self-driven professionals interested in all aspects of the company and our homeland security and Government clients. We are looking for people who are willing to share ideas and work as part of a collaborative, innovative team.

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.

Arc Aspicio is currently working in a hybrid work environment where work will be performed at client sites, the Arc Aspicio DC office, and remotely. All candidates must live in the Washington, DC area at the time of employment.

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, e ntrepreneurial spirit, strong work ethic, collaborative mind-set, 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

Applying to Arc Aspicio: Our recruiting process is very competitive. Therefore, we ask that you submit a brief, tailored cover letter to tell us what you are looking for in a company and why you would be a great fit for a consulting firm in this role. Cover letters are essential so we can understand your interest and experience relevant to consulting. The use of AI tools or AI-genera…