Integration Innovation, Inc. · 7 hours ago
Modeling & Simulation Engineer
US-Washington, D.C.
Full-time
Onsite
Mid Level
$97K/yr - $169K/yrIntegration Innovation, Inc. is a diverse company specializing in missile and aviation systems engineering, among other services. They are seeking a Modeling & Simulation Engineer to develop high-fidelity environmental and target signature models for real-time hardware-in-the-loop simulations, ensuring that sensors and mission systems can be exercised under operationally relevant scenarios.
IndustrialSoftwareSoftware Engineering
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Develop environment and target signature models for real-time simulation (e.g., propagation effects, background/clutter, target scattering/returns, sensor phenomenology as applicable)
Implement and optimize algorithms to run in real-time constraints for HIL execution (latency, throughput, determinism)
Design model interfaces and data products for integration into a HIL testbed (APIs, message formats, timing/synchronization, scenario control)
Validate models against truth data, analytical benchmarks, or lab measurements; quantify accuracy and uncertainty where appropriate
Build tools and workflows for scenario generation and parameter sweeps; support repeatable test campaigns and regression testing
Integrate models into a HIL facility: coordinate with hardware, software, and test teams; support bring-up, troubleshooting, and test execution
Document model assumptions, limitations, tunable parameters, and verification results; produce clear technical reports and presentations
Support customer demonstrations and test events by configuring scenarios, monitoring execution, and providing rapid analysis of outputs
Qualification
Required
BS/MS (or PhD) in Physics, Applied Mathematics, Mathematics, Electrical Engineering, or related discipline with strong modeling focus
Strong programming skills (Python required; C/C++ preferred for performance-critical components)
Experience implementing numerical methods, stochastic models, and/or signal/phenomenology models in code
Ability to balance model fidelity and performance for real-time execution; familiarity with profiling and optimization
Experience with verification/validation methods and disciplined documentation of assumptions and limitations
Ability to collaborate across disciplines and communicate complex technical concepts clearly
U.S. citizenship required
Active Secret required
Preferred
Experience with real-time simulation, HIL facilities, or closed-loop test environments (deterministic scheduling, low-latency pipelines)
Experience modeling sensor signatures and environments (radar/EO/IR/acoustic/RF) or domain-specific phenomenology
Familiarity with physics-based modeling approaches (e.g., scattering, propagation, atmospheric effects, terrain/clutter, multipath)
Experience with MATLAB/Simulink or other modeling toolchains; ability to translate models into production code
Comfort working with recorded data sets and measurement equipment outputs; basic signal processing knowledge
Benefits
Excellent insurance coverage
401(k) match
Generous PTO
Health and wellness incentives
Tuition and certification reimbursement
Countless opportunities to give back to the community through i3 Cares
Company
Integration Innovation, Inc.
i3 is a 100% team member owned technically diverse business solving the Nation’s toughest problems.
Founded in 2007
501-1000 employees
Funding
Current Stage
Late StageTotal Funding
$9.74M2025-11-20Series Unknown· $9.74M
2020-10-09Acquired
Leadership Team
Ken Shannon
Chief Operating Officer
Shannon Allen
Chief Operating Officer
Recent News
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