External Job Posting Title Information Systems Security Engineer (ISSE)

Peraton; Colorado Springs (CO); On-site; USD 112,000 - 179,000; Full time

Benefits offered by this job

Heavily subsidized employee benefits

25 days of PTO

Attractive bonus plan

Job summary

Peraton in Colorado Springs is seeking an Information Systems Security Engineer (ISSE) who will design and implement security controls for complex software systems. The role requires extensive experience in cybersecurity and the ability to maintain various security clearances.

The candidate will collaborate with engineering teams to ensure compliance and strengthen system defenses, while also conducting security analyses in alignment with standards. This position offers a competitive salary range of $112,000 - $179,000, along with enhanced employee benefits.

Qualifications

• 10+ years of experience in a Systems Engineering field.
• Minimum of Secret clearance, ability to upgrade to TS/SCI.
• Experience in cybersecurity or information systems security engineering activities.

Responsibilities

• Define, implement, and validate security controls for software systems.
• Evaluate control inheritance and ensure integration into security requirements.
• Identify security risks and recommend mitigations.

Skills

Cybersecurity principles

Security control frameworks (NIST SP 800-53)

Technical documentation development

System hardening

Vulnerability remediation

Education

Associates degree with 10+ years experience or equivalent

BS/BA in relevant field with 8+ years experience

MS/MA with 6+ years experience

PhD with 3+ years experience

Tools

Security engineering tools

Job description

Responsibilities

Peraton is delivering the next generation of mission‑critical command‑and‑control and enterprise software capabilities supporting the U.S. Government’s space communications infrastructure. Our team ensures these systems remain secure, resilient, and modern to meet evolving mission needs for the decade ahead.

As an Information Systems Security Engineer (ISSE), you will help design and implement security capabilities that protect complex software systems across the program. You will ensure proper application of security controls, including inherited controls from framework providers, and support the integration of cybersecurity requirements into system architectures. In this role, you will partner closely with engineering teams to maintain compliance, strengthen system defenses, and advance mission assurance.

What you’ll do:

• Apply cybersecurity engineering practices to define, implement, and validate security controls within software‑based systems.
• Evaluate and document control inheritance from framework providers and ensure proper integration into program security requirements.
• Support system architecture activities by identifying security risks, recommending mitigations, and ensuring alignment with applicable standards.
• Conduct analysis of security requirements, system configurations, and technical documentation to ensure compliance with program and regulatory guidelines.
• Collaborate with cross‑functional engineering teams to support secure design, continuous monitoring activities, and security‑relevant technical decisions.

Qualifications

Required Qualifications:

• Associates degree and 10+ years of experience in a Systems Engineering related field; OR 8+ years of experience with a BS/BA in Systems Engineering, Aerospace Engineering, Electrical Engineering, Computer Science, or related field; OR 6+ years with MS/MA; OR 3+ years with PhD. Four (4) years of additional work experience may be considered in lieu of a bachelor’s degree.
• This position requires the candidate possess a minimum of Secret clearance with ability to upgrade to TS/SCI. The candidate must maintain the clearance.
• Experience performing cybersecurity or information systems security engineering activities in a software or system engineering environment.
• Knowledge of security control frameworks such as NIST SP 800‑53, including experience applying and documenting inherited security controls from framework providers.
• Experience conducting technical security activities such as system hardening, vulnerability remediation, configuration review, or continuous monitoring within Linux and/or Windows environments.
• Ability to develop or review security documentation, including control implementation statements, system security artifacts, and compliance evidence, as well as proficiency using tools or platforms that support security engineering or compliance tracking.

Desired Qualifications:

• Active TS/SCI.
• Strong communication skills with the ability to clearly explain security considerations to technical and non‑technical stakeholders.
• Demonstrated ability to work collaboratively within cross‑disciplinary engineering teams.
• Strong analytical and organizational skills with the ability to prioritize tasks in a complex program environment.

Benefits:

Peraton offers enhanced benefits to employees working on this critical National Security program, which include heavily subsidized employee benefits coverage for you and your dependents, 25 days of PTO accrued annually up to a generous PTO cap and eligible to participatein an attractive bonus plan.

Target Salary Range

$112,000 - $179,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual’s experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

EEO

EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.