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.

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.