Senior Information System Security Engineer with Security Clearance

Redhorse Corporation; Chantilly (VA); On-site; USD 140,000 - 160,000; Full time

Job summary

Redhorse Corporation seeks a Senior Information System Security Engineer to provide expert IA services and ensure secure, compliant systems across government networks. You will design, implement, and assess security controls while collaborating with mission-focused teams.

You will lead security documentation, risk assessments, and validation activities (ST&E) to strengthen defense posture and support modern cloud and on-prem environments.

Qualifications

• Experience designing and implementing IA programs and security controls.
• Strong knowledge of NIST SP 800-37 and related IA documentation.
• Familiarity with federal information systems and compliance requirements.

Responsibilities

• Provide IA services to internal and external customers to secure networks and information systems.
• Develop and implement security requirements within business processes.
• Prepare security documentation per guidelines such as NIST SP 800-37.
• Develop and execute ST&E plans to verify security controls.
• Perform risk and vulnerability assessments to identify weaknesses and mitigation strategies.
• Review policies against Federal laws and regulations and suggest improvements.
• Develop and integrate security tools to enhance system defense.
• Manage SSPs and contingency plans to ensure continuity.
• Conduct security program audits and address identified risks.
• Support IA architecture development to meet evolving requirements.
• Assist in incident investigations and root cause analysis.

Skills

Cloud security

Security operations

Leadership

DevSecOps

Education

CISSP

ISSEP

CISM

Tools

DataBricks

GitLab

Jira

Job description

About the Organization

Now is a great time to join Redhorse Corporation. We are a solution-driven company delivering data insights and technology solutions to customers with missions critical to U.S. national interests. We’re looking for thoughtful, skilled professionals who thrive as trusted partners building technology-agnostic solutions and want to apply their talents supporting customers with difficult and important mission sets.

About the Role

Redhorse transforms the way government uses data and technology. To support this mission, we are seeking a Senior Information System Security Engineer (ISSE) to provide expert technical and programmatic Information Assurance (IA) services. In this role, you will be the cornerstone of security for our nation's most critical network and information systems. You will bridge the gap between complex technical requirements and business processes, ensuring that as we innovate, we remain compliant, secure, and resilient against evolving threats. Your work will directly impact the security posture of systems that handle vital government data.

Key Responsibilities

• Provide technical and programmatic Information Assurance services to internal and external customers to support network and information security systems.
• Design, develop, and implement security requirements within the organization’s business processes.
• Prepare comprehensive security documentation utilizing accepted guidelines such as DITSCAP, DIACAP, and NIST SP 800-37.
• Develop and execute Security Test and Evaluation (ST&E) plans to verify the efficacy of security controls.
• Conduct complex risk and vulnerability assessments to identify system weaknesses and recommend mitigation strategies.
• Analyze existing policies and procedures against Federal laws and regulations, providing strategic recommendations to close compliance gaps.
• Develop, test, and integrate computer and network security tools to enhance system defense.
• Manage and complete System Security Plans (SSP) and Contingency Plans to ensure operational continuity.
• Perform vulnerability assessments and develop risk mitigation strategies to address identified deficiencies.
• Secure system configurations, install security tools, and scan systems to determine and report compliance results.
• Conduct security program audits and develop solutions to lessen identified risks.
• Provide IA support for the development and implementation of security architectures to meet new and evolving requirements.
• Assist in computer incident investigations and perform root cause analysis.
• Develop strategies to comply with privacy, risk management, and e-authentication requirements.
• Proficiency in developing System Security Plans (SSP) and performing vulnerability scans.

Desired Experience

• Professional certifications such as CISSP, ISSEP, or CISM.
• Experience with modern cloud security environments (AWS, Azure, or Google Cloud).
• Familiarity with automated compliance tools and DevSecOps pipelines.
• Operational experience with DataBricks, GitLab, or Jira in a secure environment.
• Experience leading a team of junior security analysts or engineers.

$140,000 - $160,000 a year The salary range provided for this position represents the anticipated base salary for successful candidates. Actual compensation will be determined based on a variety of factors, including relevant experience, education, certifications, skills, security clearance level, geographic location, market conditions, and internal equity. In addition to base salary, eligible employees may participate in Redhorse's comprehensive benefits programs and may be eligible for performance-based or other incentive compensation, where applicable. Redhorse Corporation is an equal opportunity employer. All qualified applicants will receive consideration for employment and will not be discriminated against on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, veteran status, disability, or any other protected class. If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to access job openings or apply for a job on this site as a result of your disability. You can request reasonable accommodations by contacting Talent Acquisition at

Redhorse Corporation shall, in its discretion, modify or adjust the position to meet Redhorse’s changing needs. This job description is not a contract and may be adjusted as deemed appropriate in Redhorse’s sole discretion. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.