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Senior Cybersecurity Engineer RMFISSE Lead

CACI


Job Location:

Sterling, MA - USA

Monthly Salary: $ 103800 - 218100
Posted: 11 July 2026 (30+ days ago)
Application Deadline: 8 October 2026
Vacancies: 1 Vacancy

Job Summary

Job Title: Senior Cybersecurity Engineer - RMF/ISSE Lead

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Local

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The Opportunity:
We are seeking a hands-on Senior Cybersecurity Engineer to lead the security posture of our divisions family of Electronic Warfare this role you will implement maintain and adapt comprehensive security measures to protect customer data systems and networks. This position is crucial in ensuring security is integrated throughout the system lifecycle from design through operations supporting the mission while maintaining a strong defensive posture.
In addition to your technical contributions you will be responsible for managing guiding and mentoring a small team of Security Engineers dedicated to supporting various security projects. This role requires strong leadership skills deep understanding of security engineering principles and the ability to foster a collaborative and innovative work environment.

This is your opportunity to make a direct impact on national security by leading cybersecurity operations for mission-critical defense systems while developing the next generation of security professionals.

Responsibilities:

Team Leadership and Management
Lead mentor and manage a team of 3-5 Security Engineers. Oversee project timelines ensure delivery of high-quality security solutions conduct performance evaluations and provide ongoing professional development opportunities.

Security Architecture & Engineering
Lead the design and documentation of secure system architectures across web applications application stacks Web Application Firewalls (WAFs) Intrusion Detection/Prevention Sensors (IDS/IPS) antimalware technologies and Advanced Persistent Threat (APT) prevention. Define security requirements and integrate capabilities across all SDLC phases (initiation acquisition/development implementation operations/maintenance disposition) following NIST 800-64 Rev. 2 guidelines.

RMF Process Execution
Manage and execute Risk Management Framework (RMF) activities (Steps 16) performing ISSO/ISSE functions to guide systems from initial categorization through Authorization to Operate (ATO). Direct team efforts in supporting DoD or IC acquisition programs resulting in IATT and/or ATO.

Security Documentation & Compliance
Develop maintain and review Assessment & Authorization (A&A) documentation using Xacta eMASS or equivalent tools (SSP SCTM BoE). Ensure hardware and software comply with Government Security Certification Officer (SCO) requirements and meet NIST SP 800-53 ICD 503 and CNSSI 1253 standards.

Continuous Monitoring & Vulnerability Management
Implement continuous monitoring (ConMon) activities and lead security audits using IC and DoD approved scanning tools: Nessus/ACAS SCAP/SCC STIG Viewer Nmap and additional vulnerability assessment platforms.

Incident Response
Direct incident response activities and participate in on-call rotation for security incidents.

Qualifications:

Required:
Bachelors degree in computer science Cybersecurity Engineering Information Technology or related field (or equivalent experience)
10 years with demonstrated ISSE/ISSO responsibilities preferably within the Intelligence Community or DoD environment
Experience achieving IATT and/or ATO on DoD or IC acquisition programs
People management or team leadership experience
Clearance & Certifications
Current active TS/SCI eligibility
DoD 8570/8140 IASAE Level III (e.g. CISSP)
Technical Expertise
RMF processes NIST SP 800-53 NIST 800-64 Rev. 2
Experience integrating security across all SDLC phases: initiation acquisition/development implementation operations/maintenance and disposition
Network protocols (TCP/IP DNS HTTP/HTTPS) VPNs IDS/IPS firewalls DMZ configurations
Hands-on Linux/Unix experience
Web applications application stacks WAFs and application-layer security controls
A&A tracking tools (Xacta or eMASS) SCAP/SCC vulnerability assessment tools (Nessus ACAS Tenab

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What You Can Expect:

A culture of integrity.

At CACI we place character and innovation at the center of everything we do. As a valued team member youll be part of a high-performing group dedicated to our customers missions and driven by a higher purpose to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. Youll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together we will advance our nations most critical missions build on our lengthy track record of business success and find opportunities to break new ground in your career and in our legacy.


Pay Range:

There are a host of factors that can influence final salary including but not limited to geographic location Federal Government contract labor categories and contract wage rates relevant prior work experience specific skills and competencies education and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI you will receive comprehensive benefits such as; healthcare wellness financial retirement family support continuing education and time off benefits.

The proposed salary range for this position is:

$103800 - $218100

CACI is anEqualOpportunity Employer. All qualified applicants will receive consideration for employment without regard to race color religion sex pregnancy sexual orientation age national origin disability status as a protected veteran or any otherprotectedcharacteristic.

Required Experience:

Senior IC


About Company

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CACI employs a diverse range of talent to create an environment that fuels innovation and fosters continuous improvement and success. At CACI, you will have the opportunity to make an immediate impact by providing information solutions and services in support of national security miss ... View more

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