Modeling and Simulation Engineer

Crossflow Technologies is hiring a Modeling and Simulation Engineer to integrate modeling and simulation capabilities for hypersonic systems in an onsite role in Huntsville, Alabama. The position emphasizes building software that automates simulation workflows and supports trajectory, aerothermal, and multidisciplinary analysis across flight conditions.

Key Responsibilities

• Integrate, maintain, and enhance modeling and simulation (M&S) tools by connecting standalone engineering models and simulation applications into unified analytical workflows.
• Develop Python-based software, scripts, and automation for simulation setup, execution, data processing, and analysis.
• Generate, evaluate, and optimize hypersonic vehicle trajectories across relevant mission and flight conditions.
• Conduct aerothermal analyses to characterize vehicle and system performance throughout hypersonic flight.
• Develop and maintain pre-processing and post-processing workflows for structural, thermal, and aerothermal models.
• Extract, process, visualize, and interpret simulation results to support engineering assessments and design decisions.
• Identify opportunities to improve the efficiency, repeatability, and robustness of multidisciplinary analysis pipelines.
• Design, implement, and maintain CI/CD pipelines to support frequent, reliable software delivery.
• Troubleshoot integration, execution, and data-interface issues across engineering models and simulation tools.
• Develop and maintain software using GitLab, including version control, code review, testing, documentation, and other software development best practices.
• Collaborate with multidisciplinary engineering teams to integrate trajectory, structural, and other analysis capabilities.

Required Qualifications

• Bachelor's degree in Aerospace Engineering, Mechanical Engineering, or a related engineering or technical discipline.
• Strong proficiency in Python, especially for scientific computing, engineering analysis, scripting, or workflow automation.
• Experience developing or integrating modeling and simulation tools or engineering analysis software.
• Experience automating simulation workflows, including model configuration, execution, and processing of simulation outputs.
• Understanding of hypersonic flight mechanics and trajectory analysis.
• Understanding of aerodynamics, thermodynamics, heat transfer, and aerothermal effects relevant to high-speed flight.
• Experience analyzing engineering or simulation data and communicating results to technical stakeholders.
• Experience using Git/GitLab or comparable configuration-management and collaborative software-development tools.
• Ability to troubleshoot technical issues spanning software, simulation models, inputs, outputs, and computational environments.
• Active Secret security clearance.

Preferred Qualifications

• Experience generating, analyzing, or optimizing hypersonic vehicle trajectories.
• Experience using Kubernetes.
• 3-5 years of relevant software development, modeling and simulation, analysis, or related engineering experience.
• Experience with mesh generation and preparation of models for numerical analysis.
• Experience coupling or integrating multidisciplinary engineering models, such as trajectory, aerodynamics, aerothermal, thermal, and structural models.
• Familiarity with scientific Python libraries and numerical methods used for engineering analysis.
• Experience developing pre-processing and post-processing tools for large or complex simulation datasets.
• Experience creating reproducible and automated engineering analysis pipelines.
• Familiarity with high-performance or distributed computing environments used for computational engineering analysis.

Technologies

• C++
• Python
• GitLab
• Git
• CI/CD
• Kubernetes
• HPC/distributed computing environments

Location

Redstone Arsenal (Huntsville, Alabama)
Onsite

Compensation

USD 8 - 21 per hour

Benefits

• Health coverage choices (including an HSA) ranging from $0.00 to $403.14
• Dental coverage ranging from $8.23 to $31.65
• Vision coverage ranging from $8.28 to $21.80
• CROSSFLOW KUDOS SPOT BONUS PROGRAM
• 401(k) retirement plan company matching: 100% of the first 3% of compensation, plus 50% of the next 2% of compensation
• Employee Stock Ownership Plan (ESOP)
• Higher Education Assistance Program
• 11 federally observed paid holidays
• Minimum of 2 weeks of paid time off (PTO) to all full-time employees
• Flexible leave policy (carry over a maximum of 120 hours from year to year)
• Paid Parental Leave
• Bereavement Leave (up to 5 days of paid Bereavement Leave a year)
• Professional Development Funding
• Employee driven community engagement (monthly team bonding activities; Crossflow Cares)
• Mentorship Program
• Morale Lunches