Demo

Senior Model-Based Systems Engineer

APEX TK LLC
Colorado, CO Full Time
POSTED ON 1/9/2026
AVAILABLE BEFORE 2/8/2026

General Overview

APEX TK is looking for an amazing Senior Model-Based Systems Engineer to join our team! In this role you will provide senior technical and advisory assistance to the Director of Modeling and Simulation (M&S) Enterprise Engineering, who is responsible for chairing design reviews, establishing architecture and design standards, managing Enterprise Integrated Product Teams (IPTs), and synchronizing M&S across the Agency.

What You'll Be Doing

  • Performs and leads systems engineering duties to elicit stakeholder requirements and mission needs
  • Defines requirements, performs functional analysis using Model-based Systems Engineering techniques and tools
  • Drafts and reviews technical documents and supports technical reviews
  • Facilitates M&S and digital engineering transformation initiatives, and represent Enterprise Engineering in agency tiger teams and working groups

Required Skills You Bring

  • Master's degree in STEM field and 12 years of related professional experience
  • Active Secret clearance
  • Experience leading MBSE activities and projects for complex systems, preferably DoD Weapon Systems
  • Extensive experience with Model-Based Systems Engineering (MBSE) and Systems Modeling Language (SysML)
  • Experience with languages used for architecture modeling (i.e. DoD Architecture Framework and (Unified Architecture Framework (UAF))
  • Mastery of MBSE tools, such as IBM Rhapsody and Cameo, and integrated requirements tools, such as DOORs NG
  • Ability to effectively communicate complex ideas to non-technical and non-MBSE trained people
  • Experience following MBSE processes, such as IBM Harmony

Desired experience/skills

  • Doctorate in applicable field is a plus
  • MBSE certifications and training (i.e. OMG, INCOSE, etc.)
  • Ballistic Missile Defense System (MDS) domain experience working in the Missile Defense Agency (MDA)
  • Experience with definition, design, development, verification and validation, and analysis of MDS M&S (ground test and constructive or distributed virtual simulation of the MDS and its elements and components)
  • Experience with analysis, test, and systems engineering of M&S for one or more elements of the MDS (i.e. Patriot, THAAD, GMD, Sensors, or C2)
  • Exposure to MDA test events and activities supported by M&S products and services
  • Ability to work with a diverse team of engineers (geographically diverse) of different perspectives, skill sets and backgrounds
  • Energetic, motivated, self-starting

        Salary : $120,000 - $160,000

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