Simulation Software Engineer (Unreal Engine)

MARSS Group; Nice; On-site; EUR 90,000 - 150,000; Full time

Job summary

MARSS Group in Nice, France is seeking a senior Unreal Engine engineer to lead the NiDAR simulator project. You will work on UE5.x, building geo-referenced 3D environments and physics‑driven drones, vehicles, and vessels.

You will implement camera and sensor simulations, stream video to our C2 platform, and collaborate with backend teams while following the UE6 roadmap. Strong C++, Blueprints, and cross‑platform work are required.

Qualifications

• 5+ years of hands-on Unreal Engine experience, starting on UE 5.8.
• Strong C++ in Unreal and fluent Blueprints.
• Experience with real-time physics (Chaos) and vehicle/flight dynamics.
• Ability to render cameras and stream video out of Unreal to external platforms.
• Proficient with GIT, Docker, and cross‑platform development (Windows, Linux, macOS).
• Interest in following Unreal evolution and UE6 roadmap.

Responsibilities

• Lead development of a NiDAR simulator using Unreal Engine 5.x.
• Build geo-referenced 3D environments with physics-driven drones and vehicles.
• Simulate EO/thermal cameras and stream video to the C2 platform.
• Integrate the simulator with backend teams and existing software.
• Stay current with engine releases and plan the transition to UE6.
• Provide mentorship, set timelines, and assess project risks.

Skills

Unreal Engine 5

C++ (Unreal)

Blueprints

Real-time physics (Chaos)

Sensor rendering

Camera streaming

Profiling & optimization

Cross‑platform (Win/Linux/macOS)

Mentorship

UE6 roadmap awareness

Python or Golang

Education

Bachelor's degree in science or engineering

Tools

Git

Docker

GStreamer

CI/CD

Cesium for Unreal

Job description

We value intelligence and attitude over knowledge of specific technologies. But, as we are looking for an experienced Software Engineer (at least 5+ years of software programming experience), we would expect your background to be closely aligned with the main qualifications below.

Main Responsibilities

We are building a new NiDAR simulator that uses Unreal Engine 5.x for the 3D rendering engine and physics, and we are looking for a senior Unreal Engineer to lead and contribute to the development.

• Build realistic, geo-referenced 3D environments and physics-driven drones, vehicles and vessels and including effectors such as cannons, missile launchers, lasers.
• Simulate camera sensors (EO and thermal, pan/tilt/zoom) and stream their video out of the engine into our C2 platform.
• Integrate the simulator with our software, together with our backend team.
• Keep us on the latest engine releases and prepare the transition to UE6.
• Provide support and mentorship, commit to timelines, estimate accurately and assess risks.

Requirements

• Current, hands-on professional experience with Unreal Engine 5 and its recent releases (we start on UE 5.8)
• Strong C++ in Unreal, and fluent Blueprints
• Real-time physics (Chaos) and vehicle or flight dynamics
• Rendering and cameras: materials, post-process, Scene Capture and render targets
• Capturing and streaming rendered video out of Unreal (e.g. Pixel Streaming, GStreamer, RTSP)
• Profiling and performance optimisation
• GIT, comfortable on Windows and Linux (and MacOS, ideally)
• Closely following Unreal's evolution, including the UE6 roadmap (Verse, Scene Graph)
• Python and/or Golang
• Military or defence simulation, tactical games, flight or vehicle simulators
• 3D content creation or modification
• Geospatial and large worlds (Cesium for Unreal, Large World Coordinates)
• Thermal/IR sensor simulation
• Synthetic data generation for Machine Learning
• Docker, CI/CD

Education

We prefer at least bachelors degree level in a science or engineering discipline. Masters or PhD advantageous.

The Work Environment

• Development on Macs and Ubuntu: We're pragmatic so realise we also have to work with Windows occasionally… and for Unreal, we might work more on Windows.
• Small team: Embracing modern development practices. New ideas are always encouraged and we'll try most things, but we always settle on what works for us.
• Diverse team: Our team is very multicultural including a mix of experienced engineers, successful sales and project managers balanced with the brightest young graduates.
• Passionate: We are passionate and enjoy what we do!

Integration and interfacing

Our core activity is safety and security applications. We're bringing the latest web technologies to real-world hardware i.e. we don't work in the cloud. We interface with very diverse equipment: radar, sonar, thermal imaging, drones, software-defined radios and more. Our UI runs on touchscreen displays, tablets, phones, smart-glasses...

If you are looking for an easy job, this isn't it. We operate in mission critical environments. Our systems can operate at sea and high security areas with limited connectivity to the data center. So, all your assumptions about cloud development techniques and operating environments will be constantly challenged. Timelines are strict, and creativity is often required to solve unexpected technical issues. It can be extremely diverse, interesting, and rewarding if you are up to the challenge!