Information System Security Officer (ISSO) – Top Secret Clearance | Philadelphia, PA

Cambridge International Systems Inc; Philadelphia (Philadelphia County); On-site; USD 100,000 - 140,000; Full time

Benefits offered by this job

Medical, dental, vision, life insurance

401(k) immediate vesting and match

Paid time off

Relocation assistance

Sign-on and performance-based bonuses

Job summary

Cambridge International Systems Inc is seeking an Information System Security Officer (ISSO) to join their Philadelphia team. This full-time role involves supporting RMF compliance and cybersecurity for DoD systems, conducting vulnerability assessments, and incident response. Candidates should have a Bachelor’s degree in a related field and six years of experience in cybersecurity. The position requires an active DoD Top Secret clearance and provides benefits including medical insurance and a 401(k).

Qualifications

• Bachelor's degree in computer science or equivalent STEM degree required.
• Six years of cybersecurity policy experience required.
• Proven incident response expertise required.

Responsibilities

• Support RMF compliance and cybersecurity for DoD systems.
• Conduct vulnerability assessments and monitor security controls.
• Collaborate with system owners to maintain security posture.

Skills

Cybersecurity policies implementation

Vulnerability assessments

Incident response

Risk mitigation

Collaboration

Education

Bachelor’s degree in computer science or related field

Tools

ACAS

STIG Viewer

eMASS

Job description

Information System Security Officer (ISSO) – Top Secret Clearance | Philadelphia, PA

Cambridge International Systems, Inc.

Join a dynamic global team united by shared values: commitment, integrity, and perseverance. At Cambridge, you’ll work alongside top talent worldwide, tackling some of today’s most complex and critical challenges in defense and security.

We are currently seeking an Information System Security Officer to support operations in Philadelphia, PA. This is a full‑time, CONUS position requiring an active DoD Top Secret clearance.

This position is contingent upon contract award. The expected award date is May 2026.

What You’ll Do

• Serve as an ISSO supporting RMF compliance and cybersecurity for DoD systems.
• Implement and monitor security controls, ensuring adherence to NIST 800‑53 and DoD policies.
• Conduct vulnerability assessments, threat analyses, and continuous monitoring using tools like ACAS, STIG Viewer, and eMASS.
• Support incident response activities, including isolating assets, collecting data, and reporting findings.
• Maintain RMF documentation (SSPs, POA&Ms, RARs) and ensure system accreditation packages remain current.
• Collaborate with system owners, administrators, and the ISSM to sustain system security posture.
• Track, report, and resolve cybersecurity findings while preparing for audits and inspections.

What You’ll Bring

• Education & Experience: Bachelor’s degree in computer science, information technology, communications systems management, or an equivalent STEM degree from an accredited college or university.
• Technical Expertise: Six (6) years of experience implementing and coordinating cybersecurity policies across organizational levels, ensuring compliance with DoD and federal standards.
• Proven expertise in conducting vulnerability assessments, threat analyses, and risk mitigation activities.
• Incident response experience – including isolating affected assets, performing initial investigations, collecting data, and providing detailed status reports.

Certifications

• Meets DoD IAM Level II baseline requirements – holding one or more of the following: CAP, CASP+ CE, CISM, CISSP (or Associate), GSLC, CCISO, or HCISPP.
• OS/CE Qualification: As directed by Privileged Access Agreement and DFARS 252.239‑7001 requirements.
• Must have a current and active DoD Top Secret security clearance.
• Proficient with modern IT tools and infrastructure technologies.

Benefits

• Medical, dental, vision, life, accident, and critical illness insurance
• 401(k) immediate vesting and match
• Paid time off and company holidays
• Relocation assistance
• Sign‑on and performance-based bonuses
• Employee referral program
• Access to Tickets at Work, EAP, wellness initiatives, and more

Equal Opportunity Employer Statement

We are an equal opportunity employer. Applicants and employees are considered for positions and are evaluated without regard to any protected status under applicable law or other similar factors that are not job‑related. We encourage all qualified individuals to apply for employment. Selected applicants may be subject to a background investigation and/or education verification. We provide reasonable accommodation for qualified individuals with disabilities in accordance with federal, state, and local law.