Lead Modeling and Simulation Engineer

SIXGEN’s mission is to deliver agile, mission-ready cybersecurity solutions that empower government and critical infrastructure organizations to stay ahead of advanced cyber threats. We combine innovation, deep expertise, and cutting-edge capabilities to uncover vulnerabilities, protect vital systems, and ensure operational superiority in an ever-evolving digital landscape.

About the role

Position: Lead Modeling and Simulation Engineer
Job Type: Full Time
Location: Onsite
Clearance Requirements: TS/SCI & Poly (MUST HAVE)
Travel: Up to 10%

Key Responsibilities

• Lead the development and implementation of cyber-physical and virtual simulation environments, including test ranges and emulated networks
• Design and execute modeling frameworks to replicate real-world systems, threats, and operational scenarios
• Integrate live, virtual, and constructive (LVC) simulation capabilities to support training, testing, and mission rehearsal
• Collaborate with cyber operators, engineers, and analysts to ensure simulations accurately reflect threat behaviors and mission requirements
• Oversee the validation and verification (V&V) of models and simulation outputs to ensure accuracy and reliability
• Support data collection, analysis, and visualization from simulation activities to inform decision-making
• Ensure compliance with DoD/IC modeling and simulation standards, cybersecurity requirements, and system accreditation processes

Required Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, or a related technical field
• 10+ years of experience in modeling and simulation, cyber range development, or systems engineering
• Demonstrated experience with simulation tools and frameworks (e.g., MATLAB, Simulink, STK, ns-3, OMNeT++, or similar)
• Experience supporting cyber operations, test and evaluation (T&E), or training environments
• Strong understanding of network architectures, operating systems, and cyber threat behaviors
• Active TS/SCI clearance (or ability to obtain/maintain)

Desired Qualifications

• Experience with cyber range platforms and adversary emulation tools
• Familiarity with MITRE ATT&CK, cyber kill chain analysis, and threat modeling
• Knowledge of cloud-based simulation environments and containerized architectures
• Experience with DevSecOps pipelines supporting simulation and testing environments

Compensation & Benefits

$200,000 USD
The salary range for this role is an estimate based on a wide range of compensation factors, inclusive of base salary only. Actual salary offer may vary based on (but not limited to) work experience, education and/or training, critical skills, and/or business considerations. The final salary offer will be determined after a thorough review of the candidate's background and alignment with the role. Additionally, SIXGEN offers top-tier benefits for full-time employees, including:

• Employer-paid health insurance premiums (medical, dental, vision) for you and your family
• Employer-paid short/long term disability insurance and basic life/AD&D insurance
• 401K with a 4% employer contribution
• Professional development reimbursement options available (training, certification, education, etc)
• Flexible and remote work policies for most positions
• Flexible PTO and holiday schedule

Our Commitment

SIXGEN is an Equal Opportunity Employer. We ensure that all applicants are considered for employment without regard to race, color, religion, sexual orientation, gender identity, national origin, disability, age, marital status, ancestry, projected veteran status, or any other protected group or class.