Cyber Security Engineer

Cyber Security Engineer (Top Secret Clearance)

Who We Are:

Think Tek LLC is a fast‑growing Certified SBA 8(a) and Service‑Disabled Veteran‑Owned Small Business (SDVOSB) company. We specialize in providing management and technology consulting services to support the business and technology modernization efforts of the Federal Government. Think Tek was formed with the specific purpose of providing its clients a tailored solution around Program & Project Management, Strategic Planning, and IT Operations.

Think Tek is seeking a highly motivated and skilled Cybersecurity Engineer to support a dynamic defense Program Management Office. This individual will support the security posture of enterprise and mission‑critical systems. The ideal candidate will have industry‑recognized certifications such as CISSP and Security+, and onsite experience with federal security frameworks, system authorization processes, and compliance activities, and will work closely with technical teams, system owners, and leadership to ensure systems meet required security standards.

Due to the required duties, this individual would be expected to support onsite in Quantico, VA.

• Support RMF compliance and authorization artifacts, including System Security Plans (SSPs), security control implementations, boundary diagrams, and Plans of Action and Milestones (POA&M).
• Develop, maintain, and update Authorization to Operate (ATO) packages, including SSPs, Security Assessment Reports (SARs), and POA&Ms.
• Perform technical vulnerability assessments using tools such as Nessus and SCAP, analyze scan results, and support remediation efforts in coordination with government stakeholders.
• Engineer and review cybersecurity Standard Operating Procedures (SOPs), including Disaster Recovery and Continuity of Operations plans, to ensure system resilience and compliance with cybersecurity policies.
• Design and implement an Information System Continuous Monitoring Plan (ISCMP) to support ongoing RMF continuous monitoring requirements.
• Provide cybersecurity engineering expertise for system security architectures, security engineering designs, and technical security specifications throughout the system lifecycle.
• Support the technical evaluation and engineering review of cross‑domain solutions (CDS) to enable secure data transfer across geographically dispersed systems and multiple classification levels.
• Conduct technical assessments, testing, and validation of security controls to ensure compliance with security requirements and operational effectiveness.
• Develop, review, and maintain cybersecurity engineering documentation and technical data packages (TDPs).
• Provide cybersecurity engineering support to working level discussions, including participation in stakeholder meetings, development of technical briefings, capture of action items, and documentation of decisions.
• Prepare and deliver cybersecurity engineering status reports, risk assessments, and technical findings to program leadership and government customers.

• Skills &
  
  Competencies:
  
  Must have experience in developing, and maintaining RMF compliance and authorization artifacts, including SSPs, security control implementations, boundary diagrams, and POA&M.
• Proficient in contributing specialized knowledge to operational.
• Proficiency in Microsoft Office Suite: Excel, PowerPoint, Word.
• Proficiency in tools and standards: eMass, SCAP, Nessus, NIST SP 800-37, Joint SAP Implementation Guide.
• Strong analytical, problem‑solving, and critical‑thinking skills.
• Clearance: Minimum Active Top‑Secret Clearance with SCI eligibility.
• Education & Experience: Bachelor's degree in Cybersecurity, Computer Science, IT, or related technical field; 5+ years of experience in Cybersecurity, ideally supporting federal or defense programs.

• Familiarity with Marine Corps, DoD business processes, policies, and/or IT systems.
• Industry‑recognized certifications such as CISSP and Security+.
• Knowledge of/experience with eMass.

Think Tek LLC is proud to be an Equal Opportunity Employer (EOE), making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. Think Tek offers medical, dental, and vision insurance to all full‑time employees; PTO and a variety of other paid leave options are also available.

You can read more about Think Tek benefits at