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

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.