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Information System Security Officer (ISSO) with Security Clearance

ClearanceJobs
Washington, DC Full Time
POSTED ON 12/25/2025
AVAILABLE BEFORE 1/25/2026
Who We Are: Tria Federal delivers digital services and technology solutions that support the health and safety of veterans, service members and civilians. For two decades, federal agencies have relied on Tria companies to advance their critical missions and modernize their systems, so that they can uphold their commitment to the American people. Today, we are pushing the boundaries of possibility through partnerships and investments in artificial intelligence and emerging technologies, developing solutions for the biggest challenges that will face government tomorrow. Job Description: Tria Federal (Tria) is seeking a motivated and detail-oriented ISSO to join our team. The ISSO researches, develops, implements, tests, and reviews an organization's information security to protect information and prevent unauthorized access. Emphasis on knowledge of infrastructure devices (i.e. firewalls, routers, switches) Basic Requirements: * Active TS/SCI Clearance * HS. Diploma * Minimum of 3 years of experience * Security Certification * Ability to work onsite, at the customer site, in a Secure Compartmented Information Facility (SCIF) as required, dependent on workload. * 3-5 years Cybersecurity experience, to include general working knowledge of network infrastructure, i.e., OSI Model. * Working knowledge/familiarity with DHS Assessment and Authorization (A&A). * Working knowledge and experience with CSAM GRC Tool and the NIST RMF. * Knowledge of the process to obtain a system ATO and requirements to maintain the ATO. * Experience working with system stakeholders to assess and manage system cybersecurity risk * Ability to synthesize complex IT system information and communicate system status and requirements in written products and verbal presentations. * Ability to write clear, concise, and effective security control implementation statements * Familiarity with configuration settings and vulnerability management analysis of infrastructure devices. * Ability to draft a complete ATO package, to include the SSP. * Ability to work independently and within given timelines. * DHS Experience Additional Qualifications: * BS in Computer Science, Information Technology, or related field * CISSP, Security , CGRC (formerly CAP), CISM Responsibilities: * Conduct initial Security Assessment and obtain ATO, in line with NIST SP 800-37 Rev. 2. * Maintain the Security Authorization or Authorization to Operate (ATO) of assigned system(s). * Manage all aspects of Assessment and Authorization (A&A) of a small portfolio of classified systems. * Advise and assist the customer throughout the entire lifecycle of the Assessment and Authorization (A&A) process to include the development of System Security Plans (SSP). * Provide security engineering guidance and expertise to development teams that deploy new IT systems or integrating new technologies into existing systems. * Continuously update all Security Authorization documentation to maintain assigned system's ATO or system go live dates. * Select the baseline security controls for the IT system, using CSAM, and tailor where appropriate. * Document all relevant NIST 800-53 Security Controls for assigned IT systems in the SSP. * Perform and document initial and annual risk self-assessments of all systems assigned * Develop and document all supporting Security A&A artifacts (i.e., PTA, SSP, ITCP, BIA, CMP, MOU, ISA). * Produce Security Authorization package for Authorizing Official (AO) signature including ATO. * Track the deployment of software to the environment that is not part of the base image. * Conduct security impact analyses of proposed changes, provide recommendations. * Ability to analyze configuration settings, implementation of STIGs, and conducting manual checklists. * Generate Plan of Actions & Milestones (POA&Ms), with meaningful milestones, for each non-compliant control for assigned IT Systems. Salary Range $120,000 - $130,000 USD Why Tria?

What defines the Tria brand is more than just our dedication to excellence in our craft; it's our incredible team of dedicated, talented, and passionate people that make Tria so exceptional. As people powering possible, we are all partners in our team's shared success. As a company that cares about people, we seek to cultivate a culture in which all can thrive personally and professionally. We offer a top-tier benefits package to invest in your physical, mental, and financial health and wellness so that you can be your best self - at work and in life. At Tria, we are growth-minded, entrepreneurial in spirit, and committed to fostering a culture of inclusion and opportunity for all. Whatever your background, your role, your department, or stage in your professional journey, here you will have opportunities to learn new skills, seize new challenges, and advance your career as we grow. California Consumer Privacy Act (CCPA) We are committed to protecting your privacy. As part of our compliance with the California Consumer Privacy Act (CCPA), we want to inform you about how we collect, use, and protect your personal information during the job application process. For more details, please review https://www.oag.ca.gov/privacy/ccpa . Create a Job Alert Interested in building your career at Tria Federal? Get future opportunities sent straight to your email. Create alert

Salary : $120,000 - $130,000

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