Unreal Engine C++ Developer

4+ months contract for an Unreal Engine C++ Developer in St. Louis, MO (hybrid 2-3 days onsite)

*** We can Only consider US Citizens for this role***

We are supporting a flight simulation and pilot training initiative focused on high-fidelity mission visualization and real-time simulation environments
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This role is for a software engineer specializing in Unreal Engine (C++), not a designer or artist. The developer will be responsible for implementing core simulation logic, system integrations, and real-time application functionality to support training, sensor visualization, and mission scenarios.

• Develop and implement application logic using Unreal Engine with C++ (not Blueprint-only)
• Load and manage DLC/plugins containing large 3D asset libraries (aircraft, naval systems, civilian models, etc.)
• Optimize and manage rendering of large-scale environments and dynamic assets
• Implement level-of-detail logic (e.g., converting MASS entities to full actors based on range/visibility)

• Implement and integrate simulation protocols including:
• DIS (Distributed Interactive Simulation)
• CIGI (Common Image Generator Interface)
• OMS (Open Mission Systems)
• Use protocol inputs to drive:
• Animation triggers
• Real-time simulation behavior
• Support proof-of-concepts and production implementations for simulation interoperability
• Develop UI components to support:
• Lat/Lon grid overlays on 3D globe environments
• User selections and highlighting
• Build integrations to:
• Export simulation data to external data science platforms
• Consume input from external remote control/configuration systems

• Implement Unreal Engine networking features:
• Multiplayer replication
• State synchronization across multiple simulation instances
• Contribute to development of advanced simulation capabilities including:
• Photogrammetry-based environments and 3D terrain (Cesium)
• Building and infrastructure data integration
• IR (infrared) sensor simulation and dynamic material responses
• SAR (synthetic aperture radar) simulation
• Weather systems and synchronized multi-environment conditions
• Time-of-day and control integrations (e.g., HOTAS via CIGI)
• Enhance realism and fidelity (lighting, shadows, materials, environmental effects)

• Must be a U.S. citizen
• 3+ years of hands‑on experience with Unreal Engine development using C++
• Strong proficiency in C++ programming
• Experience building interactive, real‑time 3D applications

• Actor systems and scene management
• Performance optimization in real‑time environments
• Ability to work as a software engineer (not a 3D artist or designer)

• Experience with simulation standards:
• DIS, CIGI, OMS (or similar)
• Background in:
• Aerospace, defense, or simulation environments
• Real‑time data integration or visualization
• Familiarity with:
• Unreal networking and multiplayer systems
• Sensor simulation or physics‑based modeling

• Blueprint‑only Unreal developers without strong C++ experience
• 3D artists, character modelers, or purely visual designers

The ideal candidate is a true software engineer who:

• Writes production‑grade C++ in Unreal
• Understands real‑time systems and simulation
• Can integrate external data and protocols into a live environment
• Is comfortable working in a complex, engineering‑driven simulation ecosystem