Modeling & Simulation Engineer (Systems Engineer, Sr)

Redwire; Chantilly (VA); On-site; USD 90,000 - 150,000; Full time

Job summary

Redwire is seeking a Modeling & Simulation Engineer in Chantilly, VA to develop high-fidelity digital twins and physics-based simulations that support mission analysis and system design. You will integrate MBSE practices and collaborate with systems, software, and mission-analyst teams to ensure scalable, data-driven simulations across aerospace programs.

Applicants should have a STEM degree and 1–5 years of hands-on modeling experience using MATLAB/Simulink, Python, or C++.

Qualifications

• Bachelor's degree in Engineering, Systems Engineering, Mechanical Engineering, Computer Science, Physics, Applied Mathematics, or related STEM field.
• 1–5 years building physics-based models or simulation engines.
• Proficiency with MATLAB/Simulink, Python (NumPy/SciPy/JAX), or C++ for numerical modeling and system dynamics.
• Experience applying MBSE, SysML, or digital-thread methodologies.
• Ability to design and validate simulation architectures and system-level integrations.
• Experience creating and evolving digital twins for mission systems.
• Ability to model and simulate system and subsystem interfaces.
• Knowledge of integration methods, control theory, estimation, orbital mechanics, or multi-domain modeling.
• Experience with virtual integration and V&V of simulation components.
• Ability to define and assess simulation-based performance metrics.
• Ability to work with systems, software, mission analysis, and UI/UX teams.
• Skilled in presenting simulation results and design artifacts.

Responsibilities

• Develop and enhance simulation models supporting mission analysis, system design, and digital-engineering workflows.
• Design and maintain digital twins for spacecraft, vehicles, and mission systems.
• Architect simulation frameworks including component models, interfaces, scenario generation, and system-level integration.
• Implement numerical and multi-domain models using physics-based computation.
• Perform virtual integration and V&V for simulation components and end-to-end system behavior.
• Evaluate system performance using defined metrics and simulation-based criteria.
• Collaborate across engineering disciplines to align outputs with mission and product needs.
• Communicate technical results through documentation and presentations for reviews and proposals.

Skills

Modeling & simulation development

Physics-based computation

Digital engineering & MBSE

Simulation architecture

Digital twins & digital threads

Interface design & simulation

Numerical methods

Verification & validation

Cross-functional collaboration

Technical communication

Education

Bachelor's degree in Engineering or related STEM field

Tools

STK

GMAT

Orekit

Trick

Modelica

Job description

Location: 14399 Penrose Place, Suite 200, Chantilly, VA

Job Id: 3126

# of Openings: 1

Redwire is an innovative space and defense technology company driving advanced capabilities across the aerospace sector. We are looking for a leader who can contribute to concept of operations development, mission solution design, and strategic analysis for spacecraft programs supporting National Security Space. This includes work spanning space domain awareness, space resiliency, mission autonomy, structures, sensors, and next‑generation space systems.

The Modeling & Simulation Engineer is responsible for developing, integrating, and maintaining high‑fidelity digital twins and simulation architectures that support the company’s modeling, mission‑analysis, and digital‑engineering ecosystems. This role blends physics‑based computation, systems‑engineering discipline, and software‑driven simulation development to ensure that digital twins, scenario models, and system‑level simulations are accurate, scalable, and aligned with mission and product objectives. You will design and validate simulation components, implement numerical and multi‑domain models, support virtual integration and V&V activities, and collaborate closely with systems engineers, software teams, mission analysts, and UI/UX partners to deliver coherent, data‑driven simulation capabilities across aerospace and defense applications.

Responsibilities

• Develop and enhance simulation models supporting mission analysis, system design, and digital‑engineering workflows.
• Design and maintain digital twins for spacecraft, vehicles, and mission systems, including data‑driven updates and configuration management.
• Architect simulation frameworks including component models, interfaces, scenario generation, and system‑level integration.
• Implement numerical and multi‑domain models using physics‑based computation and advanced simulation techniques.
• Perform virtual integration and V&V for simulation components and end‑to‑end system behavior.
• Evaluate system performance using defined metrics, technical performance measures, and simulation‑based criteria.
• Collaborate across engineering disciplines to align simulation outputs with mission, product, and system‑design needs.
• Communicate technical results through documentation, design artifacts, and presentations for reviews and proposals.

Ideal Experience

• STEM foundation — Bachelor’s degree in Engineering, Systems Engineering, Mechanical Engineering, Computer Science, Physics, Applied Mathematics, or related STEM field.
• Modeling & simulation development — 1–5 years building physics‑based models or simulation engines.
• Physics‑based computation — Proficiency with MATLAB/Simulink, Python (NumPy/SciPy/JAX), or C++ for numerical modeling and system dynamics.
• Digital engineering & MBSE — Experience applying MBSE, SysML, or digital‑thread methodologies.
• Simulation architecture — Ability to design and validate simulation architectures and system‑level integrations.
• Digital twins & digital threads — Experience creating and evolving digital twins for mission systems.
• Interface design & simulation — Ability to model and simulate system and subsystem interfaces.
• Numerical methods — Knowledge of integration methods, control theory, estimation, orbital mechanics, or multi‑domain modeling.
• Verification & validation — Experience with virtual integration and V&V of simulation components.
• Performance evaluation — Ability to define and assess simulation‑based performance metrics.
• Cross‑functional collaboration — Ability to work with systems, software, mission analysis, and UI/UX teams.
• Technical communication — Skilled in presenting simulation results and design artifacts.

Desired Skills

• High‑fidelity simulation tools — STK, GMAT, Orekit, Trick, Modelica, or similar frameworks.
• HPC & GPU‑accelerated workflows — Familiarity with CUDA, Vulkan compute, OpenCL, or HPC pipelines.
• Graph‑based data modeling — Knowledge of metadata lineage and digital‑thread integration.
• API integration — Experience integrating simulation engines with REST, gRPC, or GraphQL APIs.
• Simulation visualization — Experience with Three.js, WebGL, React Three Fiber, or CesiumJS.
• Aerospace & mission‑system experience — Background in aerospace, defense, or high‑integrity engineering.
• MBSE tooling — Experience with Cameo, Teamwork Cloud, or similar tools.
• Requirements management — Experience with Jama, DOORS, or comparable systems.
• Systems engineering certifications — INCOSE ASEP/CSEP, OCSMP, or related credentials.
• Travel readiness — Ability to travel 10–15% as required.
• Security eligibility — U.S. Citizen; able to obtain and maintain DoD Secret clearance (TS/SCI preferred).

Grow with us as we innovate the next generation capabilities for a new era of space exploration!

We offer a highly competitive benefits package along with a commitment to our core values of Integrity, Innovation, Impact, Inclusion, and Excellence.

Don’t meet every single requirement above? No worries. We want people who can grow, collaborate and build a stronger team. We strive to build a diverse and inclusive culture, so if you’re excited about this job posting, we encourage you to apply. You may be just the right candidate for this or other roles.

Redwire Space is an Equal Opportunity Employer; employment with MIS is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

All offers of employment at Redwire Space are contingent upon clear results of a thorough background check.

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about theClick Here