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When you join the Cambridge team, you are part of a skilled and talented global community that is united by a set of core values: commitment, integrity, and perseverance. Join our team and help us confront today’s most threatening and complex obstacles!

TO APPLY

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You'll be prompted to answer general screening questions and voluntary, confidential demographic data that Cambridge International Systesms uses to submit compliance surveys to the federal government. Shortly thereafter, you will recive a confirmation of receipt email and an email with a link to complete your employment application.

Someone from our recruiting team will pre-screen your qualifications based on the position's requirements. If there is a match, you may be contacted by a recruiter to schedule an introductory phone call. Our vetting process typically includes an initial screening with the recruiter, an in-person, Teams or phone interview with the hiring manager or on a panel, and background screening (including employment and degree/certification verification).

If you submit a general application, your qualifications will be assessed for current and/or future opportunities.

We thank you for exploring career opportunities with Cambridge International Systems; we wish you success in your job search!

Please note: Cambridge International Systems does not accept unsolicited resumes. Unsolicited resumes or applications submitted by a third party will not be reviewed. Job applicants only. No staffing agencies, recruiters, or headhunters, please.

WORK-LIFE BALANCE
We understand you have commitments outside of the office. We provide a flexible paid time off package and 11 paid holidays per year.

RETIREMENT SUPPORT
We provide competitive 401(K) options including contribution matching that is 100% vested.

TRAINING AND EDUCATION ASSISTANCE
We offer reimbursement for continuing education and training.

PROFESSIONAL DEVELOPMENT

We support your professional growth and development through conference attendance, mentor programs, and internal training.

BONUSES
We recognize the importance of involving you in the hiring process, so we offer a generous employee referral bonus program. We also show our appreciation for your hard work through performance-based bonuses and on the spot bonuses that recognize outstanding achievements.

HEALTH INSURANCE
We offer full-time employees competitive medical, dental, vision, life, and disability insurance plans.

OTHER PERKS
We value the health and wellness of our employees by providing a comprehensive wellness program, community involvement and outreach opportunities, employee assistance program (EAP) and Tickets at Work accounts!

At Cambridge, we recognize innovation and agility grow through diverse collaboration. Our team is comprised of unique individuals, and it is our policy to provide equal opportunity in recruiting, hiring, training, and promoting individuals in all job categories without regard to race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), parental status, national origin, age, disability, genetic information (including family medical history), political affiliation, military service, or any other protected class or category as may be defined by federal, state, or local laws or regulations. It is our firm intent to support equal employment opportunity and affirmative action in keeping with applicable federal, state, and local laws and regulations.

If you are a qualified individual with a disability or a disabled veteran requiring assistance with the application process, please visit https://cbridgeinc.com/accessibility/ for information on how to request assistance.

For more information on equal opportunity protections, please view the U.S. Department of Labor’s Office of Federal Contract Compliance Programs EEO is the Law poster and the EEO is the Law Supplement on our Careers page.

Cybersecurity Engineer III – Top Secret Clearance | Charleston, SC

Charleston, SC

Full Time

Mid Level

Cybersecurity Engineer III – Top Secret Clearance | Charleston, SC
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 a Cybersecurity Engineer III to support operations in Charleston, SC. This is a full-time, CONUS position requiring an active DoD Top Secret clearance.

What You’ll Do
As a Cybersecurity Engineer, you will play a critical role in preparing, implementing, and ensuring compliance with cybersecurity policies, including Assessment & Authorization processes such as RMF and ATO frameworks, that serve U.S. government missions at the Cambridge corporate office. You will:

Security Measures Planning & Implementation
- Design and deploy security solutions, including firewalls, IDS/IPS, encryption technologies, and multi-factor authentication (MFA).
- Implement and manage endpoint, network, and identity security tools to fortify defenses.
Continuous Monitoring & Incident Response
- Monitor systems using SIEM and related tools to detect malicious activity and respond swiftly to incidents.
- Lead investigations, contain threats, report findings, and restore systems following security breaches.
Vulnerability Assessment & Risk Mitigation
- Conduct regular vulnerability scans, penetration tests, and risk assessments.
- Propose and implement remediation strategies to address identified weaknesses.
Policy Development & Regulatory Compliance
- Develop, document, and enforce security policies and procedures aligned with frameworks such as NIST 800‑53, GDPR, HIPAA, and ISO 27001.
- Support assessments, audits, and compliance reviews.
Security Architecture & Collaboration
- Work with IT and development teams to embed secure design principles and practices into systems and applications.
- Conduct architectural and threat modeling reviews.
Security Testing & Tool Management
- Develop and execute test scripts to validate security controls and configurations.
- Ensure security tools are functional, compliant, and properly configured.
Threat Intelligence & Ongoing Learning
- Stay current with threat trends, emerging vulnerabilities, and advanced defensive technologies.
- Incorporate AI and machine learning where appropriate to strengthen threat detection and response capabilities.
Training & Awareness
- Educate staff on cybersecurity best practices, phishing awareness, and policy compliance.
- Foster a culture of security mindfulness throughout the organization.

What You’ll Bring
Required Qualifications:

Education & Experience:
- MA/MS + 10 years of relevant experience and
- 5 years of hands-on experience supporting Navy organization as an NAO Liaison to validate IT/OT systems
Technical Expertise:
- Experience preparing, implementing, and ensuring compliance with cybersecurity policy, to include Assessment and Authorization requirements.
- Experience may include plan, implement, upgrade, and/or monitor cybersecurity measures to improve cyber defense and maintain a cyber-resilient network; assess cybersecurity vulnerabilities for risks and propose and implement remediation actions or risk mitigation strategies.
- Ensure appropriate security controls are in place that will safeguard digital files and electronic infrastructure; and respond to computer security breaches to re-establish protections and make required reports.
- Experience in remediation actions or risk mitigation strategies; ensure appropriate security controls are in place that will safeguard digital files and electronic infrastructure; and respond to computer security breaches to re-establish protections and make required reports.
- Experience includes leading and mentoring validators and RMF experts with processing A&A and implementing RMF for IT and OT systems.
- Strong knowledge of evaluating RMF packages, consulting Echelon III Package Submitting Officer (PSO), preparing command priorities for submission to NAO Team, managing MFR and HRE processes, developing and uploading artifacts to eMASS, and providing NAO guidance.
Certifications:
- Information Assurance Management (IAM) or Information Assurance Technical (IAT) or Information Assurance System Architect and Engineer (IASAE) Level I (position-based) per DoD 8570.1M
- IAT III

Must have a current and active DoD Top Secret security clearance.
Proficient with modern IT tools and infrastructure technologies

Work Environment

Compliance with vaccination and medical requirements for TDY/OCONUS roles as per Vaccine Recommendations by AOR | Health.mil.

Office setting:

Primarily an office-based role in Charleston, SC.
Standard desk/computer work with flexibility for walking and movement on site
Must be able to work in an office environment, sitting at a desk, looking at a computer for most of the workday.
Work is physically comfortable; the employee has discretion about sitting, walking, standing, etc.
May be required to travel short distances to offices/conference rooms and buildings on site.

Background & Security

Employment is contingent upon successful background investigation
Drug screening may be required for federal contract compliance

Benefits & Perks
We believe in investing in our team—both professionally and personally:

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

Join Us
If you're driven by mission, technology, and teamwork—we want to hear from you. Cambridge is growing, and this position is just one of many opportunities on our global team. Know someone perfect for the role? Referrals are welcome—both employees and non-employees may qualify for a bonus.
Apply today and help shape the future of secure cloud computing for national security.

About Cambridge International Systems
At Cambridge, innovation grows through diversity. We are proud to be an equal opportunity employer, committed to creating an inclusive and supportive work environment for all. Learn more at www.cbridgeinc.com.

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