Cyber Security Engineer

sesengin•Reston, VA

47d

About The Position

The Cyber Security Engineer will serve as a key member of SES Space & Defense's growing Cyber Organization, supporting program cybersecurity initiatives across mission-critical government and satellite communications environments. This role is responsible for helping ensure systems remain compliant, resilient, and ready to meet evolving customer and regulatory requirements throughout the program lifecycle. The successful candidate will provide hands-on support across cybersecurity engineering, vulnerability management, continuous monitoring, and certification activities while partnering closely with program managers, systems engineers, and operational teams. Acting as a trusted technical resource, this individual will help integrate security into system design, implementation, and sustainment efforts from the earliest stages of development. This position offers broad exposure to cybersecurity practices supporting space, ground, and enterprise environments while contributing directly to the protection of critical national security capabilities.

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

Nice To Haves

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

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