Job Description

Job Title: Unity Developer

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Department: Immersive Technologies

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Location: Vapi, Gujarat

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Experience: 4–6 Years

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Job Purpose:

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To design, develop, and optimize interactive surgical training modules for a physics-based robotic surgical training simulator built in Unity. The role will focus on developing C#-based training logic, interactive procedural workflows, soft-body and deformable tissue interactions, custom shaders, physics systems, and real-time simulation capabilities.

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The position will work closely with Unity Developers, Technical Artists, 3D Artists, Simulation Engineers, and Clinical SMEs to create a high-fidelity PC-based surgical training platform integrated with a robotic surgeon console.

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This is a physics- and shader-intensive simulation role, focused on interactive training and realistic simulation rather than visual-only walkthroughs.

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Key Responsibilities:

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1. Unity Development & Training Module Implementation

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• Develop interactive surgical training modules using Unity and C#.

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• Implement instrument drills, procedural exercises, multi-step surgical workflows, and training scenarios.

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• Develop modular and reusable gameplay/simulation systems using clean and maintainable architecture.

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• Implement training states, state machines, scoring systems, procedural progression, fail/retry flows, checkpoints, and completion logic.

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• Develop interactive systems for surgical instruments, anatomical structures, operating-room environments, and robotic systems.

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• Ensure reliable behavior across different training scenarios and user interactions.

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2. C# Programming & Simulation Architecture

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• Design, develop, and maintain robust C# systems for the simulator.

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• Implement modular architectures using Prefabs, ScriptableObjects, interfaces, events, dependency patterns, or equivalent approaches.

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• Develop reusable components and systems that can support multiple surgical training modules.

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• Maintain clean, readable, testable, and scalable code.

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• Identify and resolve performance, memory, logic, and integration issues.

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• Participate in architecture discussions and contribute to technical decisions for the simulation platform.

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3. Soft-Body & Deformable Tissue Simulation

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• Develop and maintain interactive soft-body, deformable tissue, and anatomical interaction systems.

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• Implement the project-selected approach for tissue deformation and physical interaction.

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• Develop realistic interaction between surgical instruments and deformable anatomical structures.

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• Configure and optimize Rigidbody, Joint, Collider, and physics-based interaction systems where applicable.

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• Balance physical realism with real-time performance requirements.

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• Evaluate trade-offs between simulation accuracy, stability, CPU/GPU usage, and training responsiveness.

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• Work with Simulation Engineers and Technical Artists to improve deformable tissue behavior.

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4. Physics & Collision Systems

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• Implement physics-driven interactions for surgical instruments, robotic components, anatomical structures, and simulation environments.

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• Configure Rigid body, joints, constraints, triggers, collision detection, and interaction systems.

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• Integrate optimized collision geometry generated by the 3D art pipeline.

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• Understand and work with UCX collision meshes and optimized physics geometry.

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• Validate collision behaviour and identify issues related to penetration, jitter, tunneling, unstable physics,



or incorrect collision setup.

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• Optimize physics calculations for real-time workstation performance.

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5. Shader & Technical Rendering Development

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• Develop and maintain custom HLSL shaders for tissue, fluid, anatomical, and other simulation-specific visual effects.

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• Implement advanced Shader Graph workflows, including HLSL/custom function blocks where appropriate.

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• Develop shader systems for realistic visualization of soft tissues, fluids, transparency, subsurface-like effects, and dynamic surface characteristics.

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• Implement vertex-color-driven shader logic and data pipelines.

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• Connect gameplay/simulation parameters to shader properties for dynamic visual feedback.

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• Collaborate with Look-Dev and Technical Art teams to ensure shader behavior matches the required visual and simulation objectives.

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• Optimize shader complexity for target workstation GPU performance.

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6. Surgical Instrument & Console Integration

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• Integrate surgical instrument and robotic console data into Unity according to the system architecture.

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• Develop interfaces between simulation systems and external device inputs where required.

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• Support integration of instrument position, orientation, interaction state, button/input data, and other device parameters.

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• Work with hardware, embedded, and systems teams to ensure reliable communication between the robotic console and Unity simulation.

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• Implement appropriate asynchronous and non-blocking approaches for external device communication.

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• Support UDP, serial, SDK, or other communication protocols where applicable.

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7. Training Logic, Scoring & Assessment

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• Develop training assessment systems based on defined surgical tasks and procedural requirements.

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• Implement scoring logic, task completion criteria, error detection, penalties, and performance indicators.

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• Develop multi-step procedural workflows and guided training sequences.

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• Implement fail, retry, reset, checkpoint, and recovery mechanisms.

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• Capture relevant simulation events and performance data for training evaluation.

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• Work with Clinical SMEs to translate approved training requirements into reliable software behavior.

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8. Unity Scene & Asset Integration

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• Consume and integrate development-ready Unity scenes produced by the Look-Dev and Technical Art teams.

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• Integrate 3D models, prefabs, materials, shaders, animations, UI elements, collision assets, and other production assets.

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• Respect established asset standards including:

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- Scale
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- Orientation
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- Pivot
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- Prefab structure
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- LOD/HLOD
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- UCX collision
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- Naming conventions
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- Folder structures
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- • Identify and communicate art-engine integration issues to the relevant teams.
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- • Ensure integrated assets function correctly within the simulation architecture.
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9. Performance Profiling & Optimization

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• Profile Unity applications using Unity Profiler and other appropriate diagnostic tools.

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• Analyze and optimize:

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- CPU performance
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- GPU performance
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- Memory usage
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- Physics performance
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- Rendering performance
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- Shader performance
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- Garbage collection
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- Draw calls
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- • Identify the actual source of performance bottlenecks and provide actionable optimization reports.
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- • Optimize the simulator for defined workstation GPU and CPU targets.
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- • Perform profiling and optimization throughout development rather than only at final build stage.
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- • Balance simulation fidelity, visual quality, responsiveness, and hardware performance.
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12. Cross-Functional Collaboration

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• Work closely with:

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- Simulation Lead
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- Senior Unity Developers
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- Unity Developers
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- Technical Artists
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- Look-Dev Artists
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- 3D Modelers
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- Sculpting Artists
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- Texturing Artists
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- Simulation Engineers
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- Hardware / Embedded Engineers
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- Clinical SMEs
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- QA / Validation Teams
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• Participate in sprint planning, technical reviews, simulation reviews, and development meetings.

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• Translate clinical and simulation requirements into practical software solutions.

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• Communicate technical dependencies, blockers, risks, and performance issues proactively.

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• Collaborate with artists to ensure assets are technically suitable for simulation.

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Qualifications and Experience:

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• Diploma / Bachelor’s degree / equivalent qualification in Computer Science, Software Engineering, Game Development, Computer Graphics, Animation Technology, or a related field.

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• 4–6 years of professional experience in Unity development using C#.

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• Proven experience delivering production or commercially used interactive 3D applications.

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• Strong professional experience with Unity and C#.

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• Demonstrated experience with physics-based or deformable/soft-body interactions.

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• Strong experience with HLSL/custom shader development or advanced Shader Graph with HLSL/custom function blocks.

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• Strong understanding of Unity Profiler and CPU/GPU/memory optimization.

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• Experience with Rigidbody, Joint, Collider, trigger, and physics systems.

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• Experience with modular Unity architecture using Prefabs, ScriptableObjects, or equivalent approaches.

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• Experience with Git / Git LFS.

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• Experience developing Windows standalone Unity applications.

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• Experience working within multidisciplinary game, simulation, XR, robotics, or real-time 3D teams is preferred.

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• Experience in surgical simulation, medical visualization, robotics, serious games, or training simulators will be an added advantage.

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Skills and Competencies:

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Technical Skills

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• Strong proficiency in Unity and C#.

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• Strong understanding of object-oriented programming and software architecture.

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• Strong understanding of Unity physics systems.

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• Practical experience with soft-body / deformable physics.

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• Strong knowledge of HLSL and custom shader development.

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• Advanced understanding of Shader Graph is an advantage.

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• Experience with vertex-color-driven shader workflows.

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• Robust understanding of Unity Profiler and performance optimization.

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• Good understanding of CPU, GPU, memory, rendering, and physics profiling.

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• Experience with collision meshes, including UCX workflows.

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• Experience with Prefabs, Scriptable Objects, scene management, and modular architectures.

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• Good understanding of asynchronous programming and non-blocking external I/O.

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• Working knowledge of UDP, serial communication, SDK integration, or similar device interfaces is an advantage.

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• Strong understanding of Git / Git LFS.

📌 Unity Developer (Vapi)
🏢 Meril
📍 Vapi