GPU Performance Engineer - Neural Reconstruction

NVIDIA; Toronto; On-site; CAD 225,000 - 275,000; Full time

Benefits offered by this job

Equity

Comprehensive benefits package

Job summary

NVIDIA in Toronto is looking for a GPU Performance Engineer for Neural Reconstruction. This role involves profiling and optimizing neural reconstruction workflows and enhancing GPU workloads. Ideal candidates have a strong foundation in CUDA and Python, with a PhD or equivalent experience.

Join NVIDIA and shape the future of computing through innovative AI technology. Enjoy a competitive salary between CAD 225,000 and CAD 275,000, plus equity and benefits.

Applications are open until June 8, 2026.

Qualifications

• 12+ years of experience in relevant engineering fields.
• Experience with Gaussian Splatting and neural rendering is a plus.
• Ability to explain performance trade-offs clearly.

Responsibilities

• Profile neural reconstruction workflows to identify bottlenecks.
• Optimize CUDA and PyTorch performance for workloads.
• Collaborate with research and engineering teams.

Skills

Strong programming skills in Python

Strong programming skills in C++

Hands‑on experience with PyTorch

Experience optimizing GPU‑accelerated workloads using CUDA

Profiling and performance analysis skills

Developing benchmarks

Education

BS, MS, PhD in relevant fields

Tools

Nsight Systems

Nsight Compute

PyTorch Profiler

Job description

Today, we’re tapping into the unlimited potential of AI to define the next era of computing. An era in which our GPU acts as the brains of computers, robots, and self‑driving cars that can understand the world. Doing what’s never been done before takes vision, innovation, and the world’s best talent. As an NVIDIAN, you’ll be immersed in a diverse, supportive environment where everyone is inspired to do their best work. Come join the team and see how you can make a lasting impact on the world.

We are now looking for a GPU Performance Engineer for Neural Reconstruction!

NVIDIA is building the future of computer graphics, simulation, robotics, and embodied AI. Neural reconstruction and Gaussian Splatting are changing how 3D worlds are collected, represented, optimized, and rendered. These workloads push the limits of GPU computing, differentiable rendering, computer vision, and production ML systems. In this role, you will help make neural reconstruction faster, more scalable, and more reliable. You will work across PyTorch, CUDA, C++, and GPU profiling to optimize training and rendering workflows used in sophisticated 3D reconstruction systems. The ideal candidate enjoys working close to the hardware while understanding the ML and 3D vision goals behind the system.

What You’ll Be Doing

• Profile end-to-end neural reconstruction workflows and identify bottlenecks across data loading, initialization, training, rendering, evaluation, and export.
• Improve CUDA and PyTorch performance for Gaussian Splatting and neural reconstruction workloads, including camera/lidar data, multiview batching, large‑scene rendering, and memory‑sensitive training paths.
• Analyze GPU performance using tools such as Nsight Systems, Nsight Compute, NVTX, PyTorch Profiler, CUDA events, and benchmark dashboards.
• Optimize sparse and irregular rendering workloads, including tile‑level masking/culling, sparse gradients, batching, and multi‑GPU execution.
• Translate high‑impact Python, NumPy, or PyTorch bottlenecks into efficient CUDA/C++ or PyTorch‑native implementations when appropriate.
• Validate that performance improvements preserve reconstruction quality, numerical behavior, camera/lidar correctness, and production reliability.
• Build repeatable benchmarks, regression tests, and profiling workflows to catch performance and quality regressions early.
• Collaborate with researchers, CUDA engineers, ML engineers, and production teams to turn promising prototypes into maintainable, reviewable, production‑quality code.

What We Need To See

• BS, MS, PhD, or equivalent experience in Computer Science, Computer Engineering, Electrical Engineering, Applied Math, Robotics, Computer Vision, Machine Learning, or a related field along with 12+ years of experience.
• Strong programming skills in Python and C++.
• Hands‑on experience with PyTorch or a similar tensor/autograd framework.
• Experience optimizing GPU‑accelerated workloads using CUDA, C++/CUDA extensions, or related GPU programming approaches.
• Practical experience with profiling and performance analysis, including root‑causing CPU/GPU bottlenecks, synchronization overhead, memory pressure, kernel launch overhead, and framework‑level inefficiencies.
• Ability to develop benchmarks and validate that optimizations preserve correctness, numerical behavior, and user‑visible quality.
• Strong communication skills, including the ability to explain performance tradeoffs, risks, and results to research and engineering partners.

Ways To Stand Out From The Crowd

• Experience with Gaussian Splatting, NeRF, differentiable rendering, rasterization, neural rendering, SLAM, 3D reconstruction, or robotics/autonomous‑vehicle perception pipelines.
• Deep CUDA performance experience, including memory access patterns, shared memory, atomics, occupancy, launch configuration, synchronization, and numerical stability.
• Experience optimizing PyTorch workloads with custom operators, fused kernels, sparse tensors, distributed training, or distributed rendering.
• Familiarity with camera and lidar geometry, projection models, calibration, rolling shutter, depth rendering, or multi‑sensor reconstruction.
• Experience improving large production ML systems where quality metrics, training speed, memory footprint, and developer velocity must be balanced.

Widely considered to be one of the technology world’s most desirable employers, NVIDIA offers highly competitive salaries and a comprehensive benefits package. As you plan your future, see what we can offer to you and your family at https://www.nvidiabenefits.com/.

Your base salary will be determined based on your location, experience, and the pay of employees in similar positions. The base salary range is 225,000 CAD – 275,000 CAD for Level 5, and 290,000 CAD – 340,000 CAD for Level 6.

You will also be eligible for equity and benefits.

Applications for this job will be accepted until June 8, 2026.