Lead Modeling and Simulation Engineer

SIXGEN; Fort Meade (MD); On-site; USD 180,000 - 230,000; Full time

Benefits offered by this job

Employer-paid health insurance

401K with employer contribution

Professional development reimbursement

Flexible and remote work policies

Flexible PTO and holiday schedule

Job summary

SIXGEN is seeking a Lead Modeling and Simulation Engineer to onsite at Fort Meade, MD. You will lead cyber-physical and virtual simulation environments, guiding test ranges and emulated networks to reflect real-world threats and mission requirements.

The role requires 10+ years in modeling, simulation, or systems engineering, and an active TS/SCI clearance. Travel up to 10% may be involved, with comprehensive DoD-compliant processes and strong collaboration across teams.

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.
• Experience with simulation tools such as MATLAB, Simulink, STK, ns-3, and OMNeT++.
• Experience supporting cyber operations, testing and training environments.
• Strong knowledge of network architectures, operating systems, and cyber threat behaviors.
• Active TS/SCI clearance (or ability to obtain/maintain).
• 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.
• DevSecOps pipelines supporting simulation and testing environments.

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.

Skills

Modeling & Simulation

LVC Integration

Cyber Range Dev

Systems Engineering

Education

Bachelor's or Master's degree in Computer Science, Engineering, Mathematics, or related field

Tools

MATLAB

Simulink

STK

ns-3

OMNeT++

Job description

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.

POSITION OVERVIEW

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

ABOUT THE TEAM

SIXGEN supports missions by serving government and commercial organizations as they overcome global cybersecurity challenges. In this position, you'll provide meaningful support to our customer's missions and operations. You'll work alongside a team of highly skilled operators who are dedicated to using innovative processes, tools, and techniques to get things done.

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

Key Competencies

• Systems thinking and complex problem-solving
• Ability to translate mission needs into technical simulation environments
• Strong communication skills to interface with both technical and operational stakeholders
• Leadership experience managing M&S teams or large-scale simulation efforts

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.

We are committed to fostering an inclusive culture that values diversity in our people, reflecting the communities we serve and our customer base. We strive to attract and retain a diverse talent pool and create an environment where everyone is empowered to be their authentic selves at work.