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AM
RTL/Firmware Design Engineer
Advanced Micro Devices, Inc
Markham, ON
- Full-time
RTL/Firmware Design Engineer (New College Grad)
Added 1 month ago
AM
Firmware Engineer
Advanced Micro Devices, Inc
Vancouver, BC
- Full-time
Experience with DDR/JEDEC standard IP, DDR PHY, or Memory Controller firmware development.
Added 1 month ago
AM
Silicon Design Infrastructure Hardware/Software Engineer
Advanced Micro Devices, Inc
Markham, ON
- Full-time
Strong software background with proficiency in Perl, Python, Tcl, and/or shell scripting
Added 1 month ago
AM
Silicon Design Engineer
Advanced Micro Devices, Inc
Markham, ON
- Full-time
A talented electrical or computer engineering recent grad with demonstrated strong academic records of relevant courses and projects in hardware logic design and computer architecture,…
Added 1 month ago
AM
Silicon Design Engineer
Advanced Micro Devices, Inc
Vancouver, BC
- Full-time
Experience with C/C++, Python, TCL, and/or SystemVerilog.
Added 1 month ago
Software Engineer, GPU Performance
HeyGen
Toronto, ON
Proficiency in Python and experience with PyTorch or a similar machine learning framework.
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Senior Data Engineer, Analytics
nesto
Vancouver, BC
- Full-time
…innovation, we help clients navigate complex financing opportunities with…
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Senior Data Engineer, Analytics
nesto
Vancouver, BC
- Full-time
…innovation, we help clients navigate complex financing opportunities with…
Added 1 month ago
L
Business Systems Engineer Intern, Finance Technology (Summer 2027)
Lyft
Toronto, ON
- $40 to $43 CAD / hour
Experience with automation tools such as Jira automation, Python scripting
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A
Senior Software Engineer
Autodesk
Toronto, ON · AMER - Canada - Ontario - Toronto - University Ave
- Full-time
This is a high-impact engineering role with real architectural ownership.
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DevOps Specialist
Manulife
Toronto, ON
- Full-time
…will be comfortable working in Agile environments, partnering with technical and business stakeholders, and driving operational excellence through modern DevOps…
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Software Engineer, Payments and Revenue
Mecka
Richmond Hill, ON
- $150,000 to $180,000 CAD / year
- Full-time
We work closely with frontier robotics teams to bridge real-world data, simulation, learning-based systems, and deployed hardware.
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Principal Software Engineer, Full-Stack Development
Zynga
Toronto, ON
- $118,300 to $168,300 CAD / year
…company's games - Central Technology! As a Principal Software Engineer, you will be responsible for the technical vision, design and implementation of AI-powered tools and systems that…
Added 1 month ago
C
ML Runtime and Kernel Engineer - Core ML
Cerebras
Toronto, ON
- Full-time
Cerebras works with the leading model labs, global enterprises, and cutting-edge AI-native startups. OpenAI recently announced a multi-year partnership with Cerebras, to deploy 750…
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Lead AI engineer
Hays
Halifax, NS
- $150,000 to $175,000 CAD / year
- Full-time
8+ years of software engineering experience with strong expertise in Python development.
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Intermediate Tier 3 Support Engineer
JSI
Ottawa, ON
- Full-time
A Tier 3 Support Engineer at JSI keeps our Nova and 4Sight platforms stable and helps Technical Support and Engineering resolve the hardest issues fast. Nova is our Kubernetes-based…
Added 1 month ago
A
Silicon Design Engineer
AMD
Markham, ON
- $91,200 to $136,800 CAD / year
- Full-time
A talented electrical or computer engineering recent grad with demonstrated strong academic records of relevant courses and projects in hardware logic design and computer architecture,…
Added 1 month ago
A
Silicon Design Engineer
AMD
Markham, ON
- $91,200 to $136,800 CAD / year
- Full-time
The ideal candidate is a highly analytical engineer with strong problem-solving skills and attention to detail, capable of independently driving complex technical tasks to completion. They…
Added 1 month ago
A
RTL/Firmware Design Engineer
AMD
Markham, ON
- $91,200 to $136,800 CAD / year
- Full-time
RTL/Firmware Design Engineer (New College Grad)
Added 1 month ago
L
Senior Python Developer
Luxoft
Toronto, ON
- Full-time
…This role is suited for an experienced, self-directed software engineer who can operate with a high degree of autonomy, take ownership of outcomes, solve ambiguous problems, and deliver…
Added 1 month ago
A
Silicon Design Engineer
AMD
Vancouver, BC
- $91,200 to $136,800 CAD / year
- Full-time
Experience with C/C++, Python, TCL, and/or SystemVerilog.
Added 1 month ago
A
Firmware Engineer
AMD
Vancouver, BC
- $87,600 to $131,400 CAD / year
- Full-time
Experience with DDR/JEDEC standard IP, DDR PHY, or Memory Controller firmware development.
Added 1 month ago
A
Silicon Design Infrastructure Hardware/Software Engineer
AMD
Markham, ON
- $91,200 to $136,800 CAD / year
- Full-time
Strong software background with proficiency in Perl, Python, Tcl, and/or shell scripting
Added 1 month ago
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Hardware Engineer - New Grad
Ciena
Ottawa, ON
- $62,600 to $100,000 CAD / year
- Full-time
Experience with scripting languages such as Python, TCL, or Bash.
Added 1 month ago
TC
AI Deployment & Solutions Engineer
Tata Consultancy Services
Toronto, ON
- Full-time
TCS is an IT services, consulting, and business solutions organization that has been partnering with many of the world’s largest businesses in their transformation journeys for over 55…

HeyGen

Software Engineer, GPU Performance

Toronto, ON, Canada

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Job details

Posting language: English
Posted: Sep 28, 2026

Original job description

About HeyGen

At HeyGen, our mission is to make visual storytelling accessible to all. Over the last decade, visual content has become the preferred method of information creation, consumption, and retention. But the ability to create such content, in particular videos, continues to be costly and challenging to scale. Our ambition is to build technology that equips more people with the power to reach, captivate, and inspire audiences.
Learn more at www.heygen.com. Visit our Mission and Culture doc here.

Position Summary

HeyGen is building AI applications including Avatar IV, Photo Avatar, Interactive Avatar, and Video Translation. We’re looking for a Software Engineer focused on GPU performance to make the systems behind these experiences faster and more efficient.

You will work across model execution and inference infrastructure, using profiling and measurement to improve latency, throughput, and GPU cost. This role is a fit for an engineer who enjoys understanding how software uses the hardware beneath it.

Key Responsibilities

Use NVIDIA Nsight Systems, Nsight Compute, and PyTorch Profiler to investigate GPU utilization, kernel execution, memory bandwidth, and CPU–GPU data movement.
Identify bottlenecks across model execution, preprocessing, and inference serving, then measure the impact of each optimization.
Improve performance through batching, scheduling, memory management, and better GPU utilization.
Develop or integrate high-performance GPU kernels when existing implementations limit performance.
Build benchmarks and automated checks that catch performance regressions across representative video workloads.
Collaborate with AI researchers and infrastructure engineers to bring optimizations into production.
Measure the effect of changes on latency, throughput, cost, and output quality.

Qualifications

Experience optimizing GPU-based AI workloads or high-performance computing systems.
Proficiency in Python and experience with PyTorch or a similar machine learning framework.
Strong curiosity about GPU hardware, including memory bandwidth, cache behavior, tensor cores, and data movement between CPU and GPU.
Experience using profiling tools to connect hardware behavior to application-level bottlenecks and validate improvements.
Ability to turn performance experiments into reliable production changes and communicate tradeoffs clearly.

Preferred Qualifications

Experience with CUDA, Triton, or C++ GPU programming.
Experience optimizing video, image, audio, diffusion, or Transformer models.
Familiarity with multi-GPU inference, GPU interconnects, quantization, or large-scale model serving.
Experience building performance benchmarks or regression testing infrastructure.
Prior experience in a fast-paced technology environment.

What HeyGen Offers

Competitive salary and benefits package.
Dynamic and inclusive work environment.
Opportunities for professional growth and advancement.
Collaborative culture that values innovation and creativity.
Access to the latest technologies and tools.

HeyGen is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

Join us at HeyGen

Help us make AI video faster and more accessible. We’d love to hear from you.

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More about this job

Responsibilities

The engineer will optimize GPU performance for AI applications by identifying bottlenecks in model execution and inference infrastructure. They will develop high-performance kernels and implement optimizations to improve latency, throughput, and GPU cost.

Requirements

Candidates must have experience optimizing GPU-based AI workloads and proficiency in Python with machine learning frameworks. Strong knowledge of GPU hardware architecture and experience with profiling tools are essential for this role.

Skills

GPU performance optimization
Python
PyTorch
NVIDIA Nsight Systems
NVIDIA Nsight Compute
PyTorch Profiler
CUDA
Triton
C++
Inference infrastructure
Memory management
Performance benchmarking
Kernel execution
Quantization
Transformer models

Benefits

Competitive salary
Professional growth opportunities
Inclusive work environment
Access to latest technologies

Visa sponsorship

Not detected in the job text

Keywords

Software Engineer
GPU Performance
AI
Avatar
Inference
Latency
Throughput
NVIDIA Nsight
PyTorch
Memory Bandwidth
Kernel Execution
Batching
Scheduling
CUDA
Triton
C++
Diffusion Models
Transformer Models
Multi-GPU
Quantization
Regression Testing
Profiling
Hardware
Data Movement
Tensor Cores

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