Lead Simulation Engineer

About Gradera — Digital Twin & Physical AI Platform 

At Gradera, we are building a next-generation Digital Twin and Physical AI platform that enables enterprises to model, simulate, and optimize complex real-world systems. Our work brings together strategy, architecture, data, simulation, and experience design to power decision-making across large-scale operational environments such as manufacturing, logistics, and supply chain networks. 

 

This platform-led initiative applies AI-native execution, advanced simulation, and governed orchestration to help organizations test scenarios, predict outcomes, and continuously improve performance. We operate with an enterprise-first mindset prioritizing reliability, transparency, and measurable business impact as we build intelligent systems that scale beyond a single industry or use case. 

Lead Simulation Engineer 

Overview 

We are seeking a hands-on, visionary Lead Simulation Engineer to drive the technical direction, architecture, and delivery of our simulation platform for digital twin solutions. This is a foundational leadership role responsible for building the simulation engine that powers real-time scenario planning, what-if analysis, and operational optimization across enterprise digital twins. 

You will lead a team of simulation engineers, architect the simulation platform using industry standards (OpenUSD, FMI/FMU), and bridge the gap between physics-based modeling and real-time operational decision-making. We value candidates with strong simulation fundamentals — whether from game engines (Unity, Unreal) or scientific computing backgrounds. 

Our simulation platform stack includes: 

Scene Description & Composition 

• OpenUSD (Universal Scene Description) for hierarchical scene composition and asset management 

• Scene graph architecture, layering, and variant sets 

• Asset pipelines and schema design 

Simulation Standards & Co-Simulation 

• FMI/FMU (Functional Mock-up Interface) for model exchange and co-simulation 

• Multi-domain system modeling and integration 

• Discrete Event Simulation (DES) (SimPy) and continuous simulation 

Physics & Optimization 

• Physics engines (PhysX, Bullet) for dynamics and kinematics 

• OR-Tools for optimization and constraint solving 

• Multi-physics modeling (mechanical, thermal, fluid where applicable) 

Development 

• Python and C++ for simulation development 

• Real-time simulation loops, time-stepping, and state management 

• Performance optimization and scalability 
  
  

Key Responsibilities 

• Define and own the simulation platform architecture for scalability, extensibility, and performance 

• Define and own the simulation strategy data strategy and architecture 

• Lead adoption of OpenUSD for scene composition, asset management, and simulation state 

• Architect FMI/FMU-compliant components for interoperability and co-simulation 

• Design simulation patterns for real-time and batch what-if analysis 

• Lead development of discrete event and physics-based simulation models 

• Build optimization algorithms for scheduling and resource allocation 

• Design co-simulation frameworks integrating multiple domain models 

• Optimize simulation performance and build validation frameworks 

• Establish engineering standards, code quality guidelines, and architectural patterns 

• Provide team leadership: mentorship, code reviews, hiring support, and skills development 
  
  

Preferred Qualifications 

• 10+ years of experience in simulation engineering, game engine development, or scientific computing, with 4+ years in technical leadership roles 

• Master’s or PhD in Computer Science, Physics, Mechanical Engineering, Aerospace, Robotics, or related field 

• Track record of architecting and delivering production-grade simulation platforms 

• Experience building simulation systems that integrate with enterprise data and ML pipelines 
  
  

Highly Desirable 

• Experience building simulations for digital twin platforms 

• Background in operations research or logistics optimization 

• Experience with real-time simulation for operational decision support 

• Contributions to OpenUSD, FMI standard, or open-source simulation projects 

• Experience with USD for Unity or USD for Unreal plugins 

• Familiarity with visualization pipelines (Three.js, WebGL, or native rendering) 

• Publications or patents in simulation, physics modeling, or game engine architecture 

• Exposure to industrial domains such as Manufacturing, Logistics, or Transportation is a plus. 

 

Location: Hyderabad, Telangana 
Department: Engineering 
Employment Type: Full-Time