Senior Cyber Security Engineer / ISSO

Parsons; Huntsville (AL); On-site; USD 134,000 - 241,000; Full time

Benefits offered by this job

Medical, dental, and vision coverage

Paid time off and holidays

Life insurance

ESOP and 401(k)

Flexible work schedules

Financial wellness

Work life harmony

Career development

Veteran support

Mind & body health

Job summary

Parsons in Huntsville, AL is seeking a Senior Cyber Security Engineer / ISSO for the Federal Solutions team, supporting the Ground-based Midcourse Dense program on-site. The role requires RMF/IA expertise and experience delivering Security Plans, IATT, ATC, and ATO documentation across the system lifecycle.

Candidates will validate security requirements, perform vulnerability analyses, manage RMF artifacts in eMASS, and coordinate with cyber teams to ensure timely delivery of CDRL artifacts.

Qualifications

• Experience analyzing complex problems and providing actionable recommendations.
• Ability to apply RMF/IA to program artifacts and processes.
• Proven capability to lead planning and implementation of large programs.

Responsibilities

• Develop system security packages including SSPs, IATT, ATC, and ATO documents.
• Validate security requirements and suggest additional safeguards as needed.
• Review audits and monitor corrective actions through closure.
• Update security artifacts and ensure RMF artifacts are loaded in eMASS.
• Coordinate with cyber teams to deliver CDRL artifacts and maintain quality.
• Perform vulnerability and risk analyses relating to information systems security.
• Track POA&Ms and ensure timely delivery of security artifacts.
• Lead and mentor Associate and Junior ISSOs; support strategic planning.

Skills

Root cause analysis

Leadership / mentoring

Education

Bachelor’s Degree in Engineering

Tools

eMASS

RMF

Job description

Parsons is hiring a Senior Cyber Security Engineer / Information Systems Security Officer (ISSO) for the Federal Solutions team, supporting the Ground-based Midcourse Dense (GMD) Product Office under the TN-MDSE contract managed by the Missile Defense Agency. This onsite role in Huntsville, AL combines deep security engineering work with structured program delivery and clear visibility into risk management across the system lifecycle.

Alongside meaningful mission impact, Parsons offers a comprehensive benefits package designed to support day-to-day wellbeing and long-term financial security.

Benefits

• Medical, dental, and vision coverage
• Paid time off and holidays
• Life insurance
• Employee Stock Ownership Plan (ESOP) and 401(k)
• Flexible work schedules
• Financial Wellness, Work Life Harmony, Career Development, Veteran Support, Mind & Body, and Health

Responsibilities

• Serve as part of the cybersecurity team developing system security packages including Security Plans (SSPs), Interim Authority to Test (IATT), Authority to Connect (ATC), and Authority to Operate (ATO) documents.
• Perform analysis to validate established security requirements, recommending additional requirements and safeguards when needed.
• Conduct periodic reviews of system audits and monitor corrective actions until closure.
• Develop, review, and update security artifacts as required.
• Confirm RMF requirements are properly addressed and ensure required artifacts are loaded and managed in eMASS (Enterprise Mission Assurance Support Service).
• Interface with other cyber teams to review RMF Contract Data Requirements Lists (CDRLs), support timely delivery of CDRL artifacts, and provide feedback to improve sufficiency and quality.
• Perform vulnerability and risk analyses using expertise in relevant information systems security.
• Track and monitor Plan of Action and Milestones (POA&Ms).
• Review cybersecurity artifacts and technical briefings, coordinating with customers to resolve findings.
• Ensure security controls are implemented and operating as intended across lifecycle phases.
• Track deliverables including artifacts, schedules, and metrics.
• Contribute to and may lead planning and implementation of large programs, regularly interfacing with senior management and executive leadership.
• Lead, mentor, and provide guidance to Associate and Junior ISSOs, and support functional strategic planning.

Requirements

• Active Secret clearance (required)
• Bachelor’s Degree in Engineering or an equivalent technical/scientific discipline (related to area of specialty) plus 10+ years of related professional experience
• Demonstrated ability to analyze complex problems, identify root causes, and provide actionable recommendations
• Knowledge to perform technical work using the Risk Management Framework (RMF) process, including solving Information Assurance (IA)-related technical problems
• Ability to establish strict program control processes to support certification and accreditation activities, including process support, analysis support, coordination support, security certification test support, security documentation support, investigations, software research, hardware introduction and release, emerging technology research inspections, and periodic audits

Technologies

• Enterprise Mission Assurance Support Service (eMASS)
• Risk Management Framework (RMF)

Salary: $134,100 - $241,400 per year.

Desired skills (if applicable): a Master’s Degree in STEM and 12+ years working on missile defense-related or other complex, large DoD programs/projects, plus MDA experience and knowledge of MDA processes.