Information Systems Security Engineer (ISSE)
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Information Systems Security Engineer (ISSE)
Location
Philadelphia, PA
Experience
Mid
Posted
Jul 22, 2026
Apply by
August 21, 2026
Applicants
0
Early applicantEasy applyFull-timeWork from Office
Job Description
Information Systems Security Engineer (ISSE)
Location: Philadelphia, PA
EEO: Professional
Clearance Level: Active Secret Security Clearance
Summary:
3 Reasons Consulting is seeking candidates with 4+ years of cybersecurity experience to join our team as an Information Systems Security Engineer. This role supports a Navy customer by providing system security engineering services to ensure the secure, reliable, and uninterrupted availability of developed and deployed systems. The ISSE will ensure core security engineering principles and hardening practices are implemented across assigned programs and architectures. If you're ready to take on a critical role in cybersecurity with an organization that values innovation and integrity, we encourage you to apply.
Services to be performed include, but are not limited to:
- Serve as ISSE for multiple information systems
- Act as a Subject Matter Expert (SME) in technologies and RMF activities
- Conduct comprehensive risk and vulnerability assessments
- Lead and participate in status meetings and cybersecurity strategy sessions
- Evaluate and apply emerging cybersecurity/RMF (Risk Management Framework) policies
- Maintain current knowledge of evolving security and risk standards and ensure compliance
- Assess systems against NIST 800-53, DoD, and Navy requirements including DISA STIGs/SRGs
- Produce compliance documentation and evidence
- Analyze vulnerability scan data and assist with remediation efforts
- Develop and maintain RMF documentation (Security Plans, POA&Ms, Risk Assessments, etc.)
- Coordinate creation of authorization boundary and architecture diagrams
Required Education and Experience:
- Bachelor’s degree in Computer Science, Information Technology, or a related field
- 4+ years of experience with:
- Vulnerability testing tools (e.g., Nessus, WebInspect, Fortify, ACAS)
- Security systems engineering for diverse environments (standalone and LAN/WAN)
- Operating systems security (aligned with NIST, DISA STIGs, USCYBERCOM)
- Implementing RMF processes and NIST 800-53 controls
Required Certification(s):
DoD 8570 IAT Level 2 certification (one or more of the following):
- CCNA-Security
- CySA+
- GICSP
- GSEC
- Security+ CE
- CND
- SSCP
Clearance Level:
Active Secret Security Clearance
Benefits at 3 Reasons Consulting:
Company-Paid Benefits:
- Short/Long Term Disability
- Basic Life Insurance
- Direct Payroll Deposit
- Leave Accrual
- Holidays
- 401(k) Match
Employee / Company Shared Benefits:
- Additional (Voluntary) Life Insurance
- 401(k)
- Medical Coverage
- Dental Coverage
- Vision Care Plan
- Flexible Spending Account Plan
An Equal Opportunity Employer
3 Reasons Consulting is an Equal Opportunity Employer. We are committed to providing a workplace free from discrimination or harassment and hold all 3 Reasons employees accountable to protect this mission. We do not discriminate on the basis of race, color, gender, religion, national origin, sexual orientation, age, marital status, veteran status, military status, disability status, or any other characteristic protected by federal, state, or local law. All applicants will receive consideration for employment without regard to protected bases.
Key Responsibilities
- Serve as ISSE for multiple information systems
- Act as a Subject Matter Expert in technologies and RMF activities
- Conduct comprehensive risk and vulnerability assessments
- Lead and participate in status meetings and cybersecurity strategy sessions
- Evaluate and apply emerging cybersecurity and RMF policies
- Maintain current knowledge of evolving security and risk standards
- Assess systems against NIST 800-53, DoD, and Navy requirements including DISA STIGs/SRGs
- Produce compliance documentation and evidence
- Analyze vulnerability scan data and assist with remediation efforts
- Develop and maintain RMF documentation such as Security Plans and POA&Ms
- Coordinate creation of authorization boundary and architecture diagrams
Requirements
- Bachelor’s degree in Computer Science
- Information Technology
- or a related field
Skills Required
Vulnerability testing tools (Nessus, WebInspect, Fortify, ACAS)Security systems engineeringOperating systems securityNIST 800-53DISA STIGsRMF processesRisk Management FrameworkCommunicationLeadershipProblem solving
Benefits
- Short/Long Term Disability
- Basic Life Insurance
- Direct Payroll Deposit
- Leave Accrual
- Holidays
- 401(k) Match
- Additional Voluntary Life Insurance
- 401(k)
- Medical Coverage
- Dental Coverage
- Vision Care Plan
- Flexible Spending Account Plan
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