Senior Missile Defense System Architecture Engineer

APEX TK

Fort Belvoir, VA Posted October 19, 2026

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On-site Full-time Senior
Job Description

General Overview
APEX TK is looking for an amazingly talented
Senior Systems Engineer
to join our team! In this role you will get to lead or participate in analysis of future Missile Defense System (MDS) architectures and concepts, and modeling and simulation (M&S) tool development to support architecture assessment.
What You'll Be Doing:
Assess missile defense system capability gaps, challenges, needs, and opportunities against current and future threats to develop potential architecture solutions that mitigate gaps and/or improve performance
Assist in the development of analysis plans, execute MDS simulation tools, post-process and assess analysis results, and prepare architecture analysis briefs/reports
Support modeling & simulation (M&S) efforts related to the above to tailor tools to specific analysis plans
What Required Skills You'll Bring:
Active Secret clearance
Ability to obtain a TS/SCI
Bachelor's Degree in a STEM (Science, Technology, Engineering, Mathematics) or related field, or equivalent work experience that meets guidelines established for job and 8+ years of related professional experience
Master's Degree or equivalent, may be preferred at this level
Solid understanding of the current MDS architecture and future concepts
Experience in modeling, assessment, and evaluation of future missile defense architectures
Strong skill in interpreting results and presenting findings clearly
Excellent ability to communicate effectively, both verbally and in writing, as well as collaboration with others to achieve objectives
Strong time management skills and the ability to assess tasks based on their importance and urgency
What Desired Skills You'll Bring:
Master’s Degree with 12+ years of experience in missile defense-related or other complex, large DoD program/project or a Bachelor's Degree with 20+ years experience
Active TS/SCI Clearance
Experience with AFSIM or similar MDS simulation tools/frameworks
Background in IAMD/Cruise Missile Defense systems
Background or experience with space systems
Experience with the definition and use of advanced concepts and algorithms for the M&S of MDS architectures
Experience supporting systems engineering-related architecture design activities

Required Skills
presentation skills collaboration time management
How to apply

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