Cyber Security Engineer

SES Space & Defense is a mission-driven provider of secure satellite and technology solutions for government, national security, and other critical missions. The Cyber Security Engineer will support cybersecurity initiatives across government and satellite communications environments, focusing on compliance, vulnerability management, continuous monitoring, certification, and system resilience. The role partners with program, engineering, and operational teams to integrate security throughout system design, implementation, and sustainment.

Responsibilities:

• Ensure system compliance within the Cybersecurity Maturity Model Certification (CMMC) framework and associated policies, procedures, and guidelines
• Provide hands-on cybersecurity support, guidance, and quality assurance for projects, programs, and team members
• Serve as a Subject Matter Expert (SME) on system certification and authorization activities
• Review customer-required security plans, including CONOPS, OPSEC documentation, standard practices, and operating procedures
• Interface with Program Management to ensure compliance with established security plans and customer directives
• Review, prepare, and maintain CMMC packages in accordance with NIST 800-171 and customer requirements
• Identify and communicate changes that may affect Information System security authorization status
• Perform self-inspections and investigations as required by government regulations
• Participate in customer audits and inspections
• Manage vulnerability and patching activities, providing regular status updates to program leadership
• Develop, revise, and maintain Plan of Action and Milestones (POA&M) documentation
• Coordinate patching and hardening efforts to align with operational schedules and program requirements
• Develop and maintain continuous monitoring plans, including schedules, frequencies, and resource planning
• Participate as a member of the Change Control Board (CCB) to support timely approval of change and configuration activities
• Develop and maintain system information security policies and procedures
• Prepare internal and external customer reports in a timely manner
• Maintain technical expertise through professional development, industry engagement, and continuing education
• Collaborate with cross-functional engineering teams across programs and organizations
• Support hardening activities, site visits, and validation efforts across operational facilities, NOCs, and satellite access centers

Requirements:

• Bachelor's degree in Computer Science or a related technical discipline
• 2–4 years of experience in Information Assurance, Cybersecurity Systems, Vulnerability Management, Systems Auditing, Information Systems, Engineering Management, or Security Test and Evaluation
• U.S. Citizenship with the ability to obtain and maintain a DoD Secret security clearance
• Experience conducting Information System vulnerability scanning
• Experience serving as an Information Systems Security Officer (ISSO)
• Ability to work effectively in dynamic environments with DoD, military, civilian, and industry stakeholders
• Ability to work independently and within cross-functional teams
• Strong written and verbal communication skills, including the ability to brief senior leaders and executive staff
• Active DoD security clearance at the Secret level or higher preferred
• Familiarity with Tenable Nessus, SCTM, SCAP, and eMASS preferred
• Military satellite communications experience preferred