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