ISSO Senior Analyst

Cybersecurity Jobs; San Antonio (TX); Hybrid; USD 110,000 - 140,000; Full time

Job summary

Cybersecurity Jobs in San Antonio, TX is seeking an ISSO Senior Analyst to lead RMF delivery for federal systems, developing essential security artifacts and guiding stakeholders through the authorization lifecycle.

You will map NIST SP 800-53/53A controls, perform risk assessments, manage POA&M items, and support continuous monitoring with eMASS, JCAM, and Xacta. Hybrid work and a secret clearance are required.

Qualifications

• Bachelor’s degree in cybersecurity, IT, IS, CS, or related field.
• Minimum 3 years of cybersecurity, technology risk, or IT experience including RMF support.
• Ability to obtain/maintain secret clearance.
• Hybrid work environment experience preferred.

Responsibilities

• Own RMF delivery workstream for assigned systems and maintain security posture documentation.
• Use NIST SP 800-53A procedures with 800-53 controls to select assessment methods and document results.
• Develop and maintain System Security Plans, Security Assessment Plans, and Security Assessment Reports.
• Draft POA&M items linking evidence to control requirements and manage POA&M execution.
• Coordinate with system owners, engineers, and application teams during evidence gathering and control interviews.
• Review scans, STIG/CIS benchmarks, and validate findings against NIST controls.
• Maintain records in governance, risk, and compliance tools (eMASS, JCAM, Xacta).

Skills

RMF delivery

NIST 800-series knowledge

Evidence mapping

Cross-functional coordination

Documentation

Education

Bachelor’s degree

Tools

eMASS

JCAM

Xacta

CSAM

Job description

Context: The ISSO Senior Analyst role supports federal systems across the NIST RMF lifecycle by owning authorization workstreams and delivering security control assessment documentation.

Responsibilities

• Own RMF delivery workstream for assigned systems by maintaining security posture documentation and supporting system owners and government ISSMs throughout the authorization lifecycle.
• Use NIST SP 800-53A assessment procedures alongside NIST SP 800-53 controls and applicable overlays to select examination, interview, and test methods, judge evidence sufficiency, and document objective results with traceability from implementation statements to architecture and evidence.
• Develop and maintain core authorization artifacts, including System Security Plans, Security Assessment Plans, Security Assessment Reports, control implementation statements, and supporting appendices.
• Perform analysis for information types and impact analysis, including FIPS 199 categorization and NIST SP 800-60 mapping; identify stakeholders and roles; document authorization boundary rationale and risk context.
• Define and document system boundary information and authorization boundaries, component inventories, data flows, interconnections, and inherited or shared controls.
• Determine control baseline selection, tailoring, overlays, scoping, parameter assignment, compensating controls, and common-control inheritance based on system architecture and hosting model.
• Draft findings and create POA&M items linking condition and evidence to control requirements, including threat and vulnerability context, likelihood, impact, recommended action, and acceptance criteria.
• Manage POA&M execution for assigned systems, including remediation tracking, evidence validation, closure packages, and deviation or risk acceptance documentation.
• Execute NIST 800-137 continuous monitoring and event-driven monitoring activities, including control review cycles, vulnerability management reporting, configuration compliance tracking, and monthly reporting deliverables.
• Conduct security impact analyses for proposed changes and document results for system owner review.
• Review scan results and STIG or CIS benchmark results; validate findings, distinguish false positives, and connect technical evidence to NIST controls.
• Maintain accurate system records and authorization artifacts in governance, risk, and compliance tools such as eMASS, JCAM, and Xacta.
• Facilitate evidence-gathering sessions and control interviews with system owners, engineers, and application teams.
• Coordinate assigned workstreams, review Analyst deliverables for quality and consistency, provide task-level guidance, manage dependencies, and escalates risk.
• Track delivery commitments, monitor schedule and quality risks, and escalates issues to engagement leadership.
• Provide day-to-day coaching to Analysts on assessment procedures, evidence expectations, and documentation standards.
• Review Analyst work products for accuracy, completeness, and consistency before submission; provide specific, actionable feedback.
• Use knowledge of cybersecurity industry trends to identify engagement and client service issues and communicate through written correspondence and verbal presentations.
• Stay current on cybersecurity industry trends relevant to delivered services.

Requirements

• Bachelor’s degree in cybersecurity, information technology, information systems, computer science, engineering, business, or related field.
• Minimum 3 years of related work experience in cybersecurity, technology risk, compliance, or information technology, including hands-on federal RMF support.
• Ability to obtain and maintain a secret level clearance.
• Comfortable working in a hybrid setting.
• Experience developing or maintaining RMF documentation, collecting and organizing control evidence, supporting assessment readiness, tracking POA&Ms, or executing continuous monitoring activities.
• Experience in one or more areas such as:
  • Federal authorization package development and maintenance.
  • NIST SP 800-53 control implementation statements and evidence mapping.
  • Security control assessment preparation and response coordination.
  • POA&M tracking, remediation support, or continuous monitoring reporting.
  • Federal governance, risk, and compliance tools such as eMASS, JCAM, CSAM, or Xacta.
  • Technical security artifacts such as network diagrams, inventories, vulnerability scans, STIG or CIS benchmark results, change records, or configuration data.
• Flexibility to travel up to 20%.

Technologies

• NIST CSF
• NIST 800-53r5
• NIST 800-37r2
• NIST SP 800-53A
• NIST SP 800-53
• NIST SP 800-60
• NIST SP 800-30
• NIST SP 800-137
• FIPS 199
• FISMA
• eMASS
• JCAM
• Xacta
• CSAM
• STIG
• CIS
• FISMA and relevant agency-specific policies

Ideally, You’ll Also Have

• CISSP, CISM, CISA, CGRC, CIPT, CIPM, CIPP, CRISC, or other relevant certification.
• Prior experience supporting a federal agency, consulting engagement, service delivery center, or managed service.

Skills and Attributes for Success

• Applied knowledge of federal security frameworks and standards including NIST SP 800-37, 800-53/53A, 800-60, 800-30, 800-137, FIPS 199/200, FISMA, and relevant agency-specific policies.
• Applied knowledge of the NIST Risk Management Framework and security control assessment methodology.
• Ability to analyze technical information and translate it into clear control documentation.
• Ability to manage multiple systems or workstreams concurrently.
• Ability to review work products for quality and consistency.
• Clear communication with technical stakeholders and engagement leadership.

Location: San Antonio, TX (hybrid)