# Lead Senior Information Systems Security Officer (ISSO)

**Company:** [TOMORROW HIRE](null/companies/pz6bMBTYwyNBHtEHsJk398.md)
**Location:** Washington, United States
**Workplace:** hybrid
**Employment type:** Full-time
**Department:** Information Technology

[Apply for this job](null/view/4e5c0b3f-8e1c-424a-8ae7-a54f2087b80e)

## Description

**Work Type:** Hybrid — Washington, DC; on-site at least 2 days per week  
**Industry Category:** Cybersecurity / Federal Information Security  
**Employment Type:** Full-Time Contract — Key Personnel  
**Clearance Requirement:** Must be eligible for and capable of obtaining a Tier 4 (High-Risk Public Trust) background investigation  
**Salary:** $150,000–$200,000 per year as a W2, negotiable for the right candidate.  
**Citizenship Requirement:** U.S. Citizenship Required

**Position Overview**

Our client is seeking an experienced **Lead Senior Information Systems Security Officer (ISSO)** to support a federal cybersecurity program. This full-time Key Personnel position will serve as the primary technical lead and point of accountability for ISSO activities across supported information systems.

The Lead Senior ISSO will provide hands-on leadership across **NIST Risk Management Framework (RMF), system authorization, continuous monitoring, vulnerability and POA&M management, security documentation, incident response, and audit/compliance activities**. This is a technical leadership role and not solely an administrative management position.

**Key Responsibilities**

-   Serve as the primary technical interface with the Government ISSM, CISO, AO/AODR, System Owners, and other cybersecurity stakeholders.
-   Lead and coordinate ISSO activities across supported federal information systems.
-   Lead **NIST RMF**, system categorization, security control assessment, **ATO/reauthorization**, and continuous authorization activities.
-   Oversee development, review, quality control, and submission of security authorization packages and supporting documentation.
-   Lead **Information Security Continuous Monitoring (ISCM/ConMon)**, security-posture reporting, metrics, dashboards, and trend analysis.
-   Oversee vulnerability management, remediation, and **Plan of Action and Milestones (POA&M)** activities.
-   Support **Security Impact Analyses (SIAs)**, system/configuration changes, incident response, and corrective-action tracking.
-   Lead cybersecurity audit, assessment, **FISMA**, compliance, evidence-collection, and audit-readiness activities.
-   Conduct quality reviews, manage cybersecurity risks and issues, and escalate significant matters to Government leadership.
-   Participate in cybersecurity governance and technical reviews while coordinating with program management on staffing, reporting, and performance.

## Requirements

### **Minimum Qualifications**

-   U.S. citizenship required.
-   Must be eligible for and capable of obtaining a **Tier 4 (High-Risk Public Trust)** background investigation.
-   Senior-level experience as an **ISSO or in a closely related federal cybersecurity role**.
-   Experience with **NIST RMF, FISMA, system authorization, ATO/reauthorization, security control assessment, and continuous monitoring (ISCM/ConMon)**.
-   Experience with **vulnerability management, POA&M development/tracking, remediation, cybersecurity audits, compliance, and audit readiness**.
-   Experience developing and maintaining federal cybersecurity documentation, including **SSPs, POA&Ms, Continuous Monitoring Plans, SAP/SARs, SIAs, incident response and contingency plans, and security control evidence**.
-   Experience leading cybersecurity workstreams and coordinating with **ISSMs, CISOs, AO/AODRs, System Owners, assessors, and technical teams**.
-   Working knowledge of applicable **NIST SP 800-series** cybersecurity standards and guidance.
-   Working familiarity with **CSAM, Splunk, ServiceNow ITSM, and Tenable/Nessus or Qualys**.
-   Familiarity with enterprise security technologies including **Microsoft Defender, Intune, BigFix, Azure, Microsoft 365 security/compliance tools, Entra ID, Okta, Palo Alto Panorama, and Zscaler**.
-   Strong technical writing, analytical, leadership, communication, and stakeholder-management skills.
-   Ability to work on-site in **Washington, DC at least two days per week**, with additional on-site support as required.

### **Preferred Qualifications**

-   Relevant education and professional cybersecurity certifications.
-   Prior experience as a **Lead ISSO, Senior ISSO, or federal cybersecurity technical lead**.
-   Advanced hands-on experience with **CSAM, Splunk, ServiceNow, and Tenable/Nessus or Qualys**.
-   Experience supporting multiple federal information systems through RMF authorization and continuous-monitoring lifecycles.
-   Experience leading cybersecurity governance, quality reviews, audit preparation, and Government-facing technical discussions.

## Benefits

**Compensation**

**$150,000–$200,000 per year as a W2**, negotiable for the right candidate.

**Benefits**

-   Medical insurance
-   Dental insurance
-   Vision insurance
-   401(k)