Information Systems Security Officer (ISSO) – Mid/Senior Level

Remote

Full Time

Experienced

Tangent Technologies is seeking a skilled Information Systems Security Officer (ISSO) to support a federal program. The ISSO will ensure ongoing security, compliance, and risk management of information systems. This role is critical in the development and implementation of system security documentation and procedures, which are required to obtain and maintain an Authority to Operate (ATO).
In this position, the ISSO will serve as a trusted security advisor, ensuring compliance with federal standards including NIST, FISMA, FedRAMP, and the Risk Management Framework (RMF). The ISSO will also help implement effective continuous monitoring practices for assigned systems.

Candidates should be proactive, detail-oriented, and possess strong communication skills for client engagement.

This position is 100% REMOTE.

Key Responsibilities

Security Assessment & Authorization (A&A): Lead the preparation of ATO packages, including System Security Plans (SSPs), Plans of Action & Milestones (POA&Ms), Security Assessment Reports (SARs), and supporting documentation. Guide systems through the ATO lifecycle and continuous authorization processes, ensuring compliance with NIST SP 800-53, FISMA, and RMF standards.
Risk Mitigation: Conduct Security Impact Analyses (SIA) for system changes, develop mitigation strategies for identified vulnerabilities, and collaborate with system engineers to maintain secure system baselines.
Compliance Enforcement: Perform self-assessments, risk assessments, and annual testing of Contingency Plans and Incident Response Plans.
Continuous Monitoring: Review audit logs, analyze vulnerability scans, and evaluate system-level reports to ensure the effectiveness of security controls.
Technical Knowledge: Demonstrate expertise in network security, cloud environments (including containers and architectures), operating systems, and security assessment tools.

Required Qualifications

Bachelor’s degree in IT, Cybersecurity, or a related field
Minimum of 6 years of experience in ISSO or RMF roles
Direct experience developing ATO packages (SSP, POA&M, SAR)
Strong knowledge of NIST SP 800-53, FISMA, and RMF requirements
Demonstrated ability to manage multiple systems (4-6 simultaneously)

Preferred Qualifications

Experience with cloud-based systems (SaaS, IaaS, PaaS) from major providers such as AWS, Azure, or GCP
Experience using Google Suite tools
Familiarity with AI tools such as Gemini, ChatGPT etc.
Familiarity with Archer or CSAM platforms
Relevant certifications (one required): CISSP, CISM, CISA, CRISC, CGRC
Experience supporting federal civilian agencies. Active Public Trust clearance

Veteran Hiring Preference

Tangent Technologies is a Service-Disabled Veteran-Owned Small Business (SDVOSB). Veterans and military-affiliated individuals are strongly encouraged to apply.

Security Requirement

Candidates must successfully complete a federal background investigation, which includes a financial suitability screening.

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Are you authorized to work in the United States without sponsorship?*

Are you able to pass a federal background investigation, including financial suitability requirements?*

Do you have 6+ years of hands-on ISSO or RMF experience supporting federal systems?*

Have you personally led or been directly responsible for developing ATO packages (SSP, POA&M, SAR)?*

Do you have working experience with FedRAMP, NIST SP 800-53 and RMF?*

Have you managed multiple systems (4-6 simultaneously) as an ISSO?*

What is your experience supporting federal agencies?*

Have you served as a Lead ISSO or mentored other ISSOs?*

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Tangent Technologies LLC

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