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Added 4 mins ago
QT
Junior Photonics Engineer
Quantized Technologies
Calgary, AB
- Full-time
We are seeking a driven and hands-on Junior Photonics Engineer to support the development and testing of optical systems for quantum technologies, including entangled photon sources. This…
Added 19 mins ago
MT
Principal Analog Mixed-Signal Design Engineer - Optical
Marvell Technology
Ottawa, ON · Toronto, ON · CA-ON - Ottawa
- Full-time
Marvell is seeking an RF and Analog Design Engineer to contribute to the development of multi-tens of GHz transimpedance amplifiers (TIAs). These optical interface chips are tightly coupled…
Added 50 mins ago
T
Electrical & Instrumentation Engineer
Tenova
Mississauga, ON
- Full-time
The Electrical & Instrumentation (E&I) Engineer is responsible for the design, review, implementation, commissioning, troubleshooting, and continuous improvement of electrical,…
Added 50 mins ago
PS
Intel Server Support
PlanIT Search
Regina, SK
- $50 to $60 CAD / hour
- Contract
We are seeking a skilled and motivated Client Server Support Engineer to join our IT infrastructure Support team. The ideal candidate will be responsible for configuring, managing,…
Added 50 mins ago
H
Analog Validation & Characterization Engineer
HaiLa
Ottawa, ON
- Full-time
This is an exciting opportunity for an Analog Validation & Characterization Engineer to join our dynamic and diverse team! This is a full-time, on-site role reporting to the VP of…
Added 50 mins ago
T®
Full Stack .NET Developer (Software Developer III)
TekWissen ®
Vaughan, ON
- $65 to $70 CAD / hour
- Contract
5+ years of professional software development experience, preferably as a Full Stack Engineer, Software Engineer, or similar role.
Added 1 hour ago
X
Sr. Electrical Engineer
Xanadu
Toronto, ON
- Full-time
As part of the Hardware Team, you will work with our established team of physicists and engineers to develop high-performance custom electronic boards for photonic quantum computers. In the…
Added 1 hour ago
DD
Landing Gear Engineer
Dominion Dynamics
Canada
- Full-time
…the job is selecting, integrating, and qualifying the right hardware with suppliers, then getting it built, tested and…
Added 1 hour ago
DD
Flight Controls Engineer
Dominion Dynamics
Canada
- Full-time
…sizing and selection of actuators, sensors, and flight control…
Added 2 hours ago
MH
HVDC Design Engineer (Electrical/Computer Engineer)
Manitoba Hydro
Winnipeg, MB
- Full-time
We are seeking a Senior HVDC Design Engineer to join the Station Design Department and help design, modernize, and support critical HVDC converter and transmission station infrastructure.…
Added 2 hours ago
SS
Machine Learning Engineer
Sapphire Stream Technology
Toronto, ON · Greater Toronto Area, Canada
- Full-time
SST is seeking a Machine Learning Software Engineer – GPU & AI Optimization to join our growing engineering team in Markham, Ontario.
Added 2 hours ago
SS
Senior Validation Engineer- Agentic AI
Sapphire Stream Technology
Toronto, ON · Greater Toronto Area, Canada
- Full-time
SST is seeking an experienced Senior Agentic AI – Validation & Automation Engineer to join our engineering team in Markham, Ontario.
Added 4 hours ago
Certification Engineer Co-op
Moment Energy
Surrey, BC
Moment Energy is seeking a Certification Engineering Co-op to support our Certification Engineer in researching, coordinating, and documenting the regulatory requirements that allow our…
Added 5 hours ago
AC
UWB/CSS Ranging & Positioning Engineer
Amaris Consulting | Part of Mantu
Montreal, QC
- Full-time
Added 5 hours ago
HT
Manufacturing Engineer (Contract)
Husky Technologies
Bolton, ON
- Full-time
We have an opening for a Mechanical / Manufacturing Engineer working with our Manufacturing Engineering Team as outlined below:
Added 7 hours ago
HE
RF Engineer
Holt Executive Ltd
Gatineau, QC
- Full-time
This is a hands-on, product-focused position suited to an engineer with strong RF hardware knowledge who is comfortable working across systems engineering, product development,…
Added 10 hours ago
G
Senior Software Engineer – Visualization and Front End
GeoSoftware
Calgary, AB
- Full-time
We are looking for an experienced front-end engineer to join our Digital Platform team.
Added 11 hours ago
HT
Manufacturing Engineer (Contract)
Husky Technologies
Bolton, ON
- Full-time
We have an opening for a Mechanical / Manufacturing Engineer working with our Manufacturing Engineering Team as outlined below:
Added 13 hours ago
J
QA Test Engineer, Industrial
Jobgether
Canada
- Full-time
This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a QA Test Engineer, Industrial based in Canada.
Added 16 hours ago
I
Manager, Product Manufacturing
Inertia
Toronto, ON
- Full-time
We are looking for an engineer with deep manufacturing process knowledge and strong project and people leadership to lead new product manufacturing at Inertia. You will take products from…
Added 16 hours ago
I
Product Development / Design Engineer – Mechatronics
Inertia
Toronto, ON
- Full-time
We’re looking for a Mechatronics Engineer or Embedded Systems Engineer with exceptional product design and engineering skills + experience to join Inertia’s growing team; a talented…
Added 16 hours ago
AM
Mechanical Engineer-in-Training or Technologist
Avalon Mechanical
Victoria, BC
- Full-time
Registration, or eligibility to register, as an engineer-in-training (EIT) or professional engineer (P.Eng.) in B.C. or equivilant certification.
Added 17 hours ago
HT
Manufacturing Engineer (Contract)
Husky Technologies
Bolton, ON
- Full-time
We have an opening for a Mechanical / Manufacturing Engineer working with our Manufacturing Engineering Team as outlined below:
Added 23 hours ago
Applications Engineer
DarkVision
North Vancouver, BC
DarkVision develops high resolution ultrasonic inspection technology for industrial assets. We engineer, develop, and manufacture integrated hardware and software solutions for complex…
Added 23 hours ago
HT
Manufacturing Engineer (Contract)
Husky Technologies
Bolton, ON
- Full-time
We have an opening for a Mechanical / Manufacturing Engineer working with our Manufacturing Engineering Team as outlined below:

Sapphire Stream Technology

Machine Learning Engineer

Toronto, ON, Canada
Greater Toronto Area, Canada, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Dec 2, 2026
Posting language: English
Posted: Nov 2, 2026

Original job description

About Sapphire Stream Technology

Sapphire Stream Technology (SST) is a technology and engineering solutions company specializing in software development, AI and machine learning, semiconductor technologies, automotive solutions, and advanced engineering services.

We collaborate with leading global technology companies to deliver innovative engineering solutions and support the development of next-generation products.

As we continue to expand our presence in North America, we are looking for talented engineers who are passionate about emerging technologies, solving complex technical challenges, and contributing to advanced AI and computing solutions.

Position Overview

SST is seeking a Machine Learning Software Engineer – GPU & AI Optimization to join our growing engineering team in Markham, Ontario.

The successful candidate will work on advanced machine learning software development, GPU computing, and performance optimization for next-generation computing platforms.

This role involves developing and optimizing machine learning kernels, leveraging agentic AI workflows to improve engineering productivity, and collaborating with cross-functional engineering teams to enhance software performance, computational efficiency, and power optimization.

We are looking for an enthusiastic, technically strong individual who enjoys working on complex engineering challenges and exploring innovative approaches to AI and GPU software development.

Key Responsibilities

Develop, implement, and optimize machine learning software, GPU kernels, and computational workloads for advanced computing platforms.
Leverage agentic AI tools and workflows to accelerate software development, testing, debugging, and optimization.
Support software and workload development across pre-silicon and post-silicon development environments.
Design and maintain efficient machine learning kernels, kernel fusion techniques, and performance optimization solutions.
Develop clean, maintainable, and testable C++ and Python code, including microbenchmarks and automated regression tests.
Optimize GPU execution parameters, including tile sizes, block configurations, and memory layouts, to improve latency, throughput, and power efficiency.
Support runtime integration, deployment, and performance tuning across machine learning inference frameworks and computing platforms.
Analyze GPU performance using profiling tools and performance metrics to identify bottlenecks and optimization opportunities.
Collaborate with software, hardware, runtime, and machine learning engineering teams to improve system-level efficiency.
Participate in technical design discussions, code reviews, debugging, and continuous improvement initiatives.
Contribute to the development of innovative engineering solutions for emerging AI and high-performance computing applications.

Required Qualifications

Bachelor's or Master's degree in Computer Science, Computer Engineering, Software Engineering, Computer Systems, or a related technical discipline.
Strong programming proficiency in C++ and Python.
Solid understanding of software engineering principles, algorithms, data structures, and performance optimization.
Knowledge of machine learning concepts, numerical computing, and linear algebra.
Experience developing, debugging, and testing complex software applications.
Strong analytical and problem-solving abilities.
Excellent communication, collaboration, and teamwork skills.
Ability to work effectively in a fast-paced, collaborative engineering environment.

Preferred Qualifications

Practical experience using agentic AI workflows, AI coding assistants, or AI-driven development tools to improve engineering efficiency.
Experience with GPU computing or parallel programming technologies such as CUDA, HIP, or OpenCL.
Familiarity with GPU graphics programming technologies such as DirectX or Vulkan.
Experience developing and optimizing machine learning kernels and GPU-accelerated workloads.
Understanding of machine learning architectures, including Transformers, U-Nets, and Convolutional Neural Networks (CNNs).
Familiarity with pre-silicon software development or hardware emulation platforms such as FPGA, ZeBu, or Veloce.
Experience with performance profiling tools and GPU performance metrics, including occupancy, memory bandwidth, FLOPs, and roofline analysis.
Knowledge of kernel fusion, memory optimization, parallel execution, and high-performance computing.
Experience with machine learning inference frameworks, runtime integration, or production software deployment.
Exposure to hardware-software co-optimization and power-efficient computing.

Why Join SST?

Work on advanced AI, machine learning, and GPU computing technologies.
Contribute to challenging engineering projects involving next-generation computing platforms.
Collaborate with experienced engineering professionals and global technology teams.
Gain exposure to emerging technologies in semiconductor engineering and high-performance computing.
Be part of SST's growing North American engineering organization.

Work Location

Markham, Ontario, Canada – Onsite

This position requires working onsite and collaborating closely with engineering teams.

Equal Opportunity Employer

Sapphire Stream Technology is committed to providing an inclusive and respectful workplace. Employment decisions are based on qualifications, experience, and business requirements, in accordance with applicable employment and human rights legislation.

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More about this job

Responsibilities

Develop and optimize machine learning software, GPU kernels, and computational workloads, including kernel fusion, execution tuning, and performance analysis. Use agentic AI workflows and collaborate with software, hardware, runtime, and machine learning teams to improve performance, efficiency, and power optimization across pre-silicon and post-silicon environments.

Requirements

A bachelor's or master's degree in computer science, computer engineering, software engineering, computer systems, or a related discipline is required, along with strong C++ and Python skills. Candidates should understand software engineering, algorithms, data structures, machine learning, numerical computing, and linear algebra, and bring strong analytical, problem-solving, communication, and teamwork abilities.

Skills

C++
Python
Machine Learning
GPU Computing
GPU Kernel Optimization
CUDA
HIP
OpenCL
Parallel Programming
Performance Profiling
Kernel Fusion
Linear Algebra
Machine Learning Inference
AI Coding Assistants
DirectX
Vulkan

Visa sponsorship

Not detected in the job text

Keywords

Machine Learning
GPU Computing
C++
Python
CUDA
HIP
OpenCL
DirectX
Vulkan
Agentic AI Workflows
AI Coding Assistants
GPU Kernels
Kernel Fusion
Performance Optimization
Performance Profiling
Pre-Silicon Development
Post-Silicon Development
FPGA
ZeBu
Veloce
Transformers
U-Nets
Convolutional Neural Networks
Machine Learning Inference
Runtime Integration
Memory Bandwidth
Occupancy
Roofline Analysis
High-Performance Computing
Hardware-Software Co-Optimization

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