Senior Systems Engineer

APEX TK is seeking a Senior Systems Engineer to support the Missile Defense Agency’s (MDA) Program Office delivering critical capabilities for the Defense of Guam (DoG). This role supports a priority national defense effort in a dynamic environment, ensuring effective integration of missile defense elements to protect a key strategic location. The selected candidate will provide senior-level systems engineering support, guiding technical efforts across multiple domains and ensuring alignment with MDA objectives.

• →Perform integrated analysis and evaluation of DoG test events including Flight Tests, Ground Tests, and System Integration Check Out (SICO) activities
• →Participate in and support engineering milestones such as Preliminary and Critical Design Reviews (PDR/CDR), Test Readiness Reviews (TRRs), and technical assessments
• →Collaborate with stakeholders across MDA and supporting organizations to coordinate schedules, resolve issues, and ensure technical accuracy
• →Provide input on secure system design considerations, risk identification, and mitigation strategies
• →Lead or support technical interchange meetings (TIMs), action tracking, and meeting coordination
• →Develop executive-level briefings, technical papers, and correspondence for senior leaders, including Flag Officers and SES personnel
• →Coordinate GENser and SAP-level meetings and VTCs as needed
• →Represent the Government customer in IPTs, working groups, and forums
• →Apply engineering tools such as DOORS, Windchill, and Qlik for analysis and coordination
• →Support efforts related to system security, including compliance tracking or integration of cybersecurity inputs into engineering processes

• 12+ years of relevant systems engineering or technical experience for missile defense related programs
• Master's Degree in STEM field
• Active Secret clearance
• Strong understanding of MDA systems engineering processes and procedures
• Demonstrate understanding of system architecture and system
• Experience with MDA system elements (e.g., Patriot, THAAD, Aegis, C2BMC)
• Familiarity with secure development practices, configuration management, and cybersecurity-informed engineering
• Knowledge of the ETM-2 system and experience managing Congressional or routine taskers
• Ability to operate independently and communicate effectively across diverse technical teams
• Proficiency in Microsoft Office Suite (Outlook, Word, PowerPoint, Excel, Project)
• Skilled in developing and delivering technical briefings to senior decision-makers​

• Preferred background that includes exposure to secure system development and cybersecurity-informed engineering practices
• Bachelor's degree in STEM in addition to Master's degree in STEM