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Added 1 min ago
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Senior DevOps Engineer
Pixieset
Vancouver, BC
- Full-time
We’re hiring a Senior DevOps Engineer to strengthen the shared platforms, infrastructure, and delivery workflows that our engineering teams rely on.
Added 1 min ago
AI Engineer (Data Scientist)
Hydro One Networks Inc
Toronto, ON
…implement data driven solutions, and promote adoption of governance tools and best practices through training and consultation. Provide leadership in establishing stewardship roles,…
Added 1 min ago
Senior Software Engineer
impact.com
Victoria, BC
As a Full Stack Software Engineer at impact.com, you'll work on a global team, building real time data processes at-scale. You can be part of the design and build of distributed systems…
Added 2 mins ago
OP
Software Engineer, Full Stack
Ontario Power Generation
Oshawa, ON
- Volunteer
Ontario Power Generation (OPG) is looking for a dynamic, strategic and results-driven professional to join our team in the role of Software Engineer, Full Stack.
Added 17 mins ago
UT
U-Accelerate : Développeur(euse) de logiciels, nouveau(elle) diplômé(e) // U-Accelerate: Software Developer, New Grad
Unity Technologies
Montreal, QC · CAN-Montreal
- Full-time
Added 17 mins ago
OP
Junior Quality Engineer
Ontario Power Generation
Oshawa, ON
- Full-time
Ontario Power Generation (OPG) is looking for a dynamic, strategic and results-driven professional to join our team in the role of Junior Quality Engineer.
Added 17 mins ago
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Senior Databricks Data Platform Engineer
Galent
Montreal, QC
- Contract
Job Title: Senior Databricks Data Platform Engineer
Added 17 mins ago
AS
Senior Data Engineer
AgileGrid Solutions
Canada
- Full-time
…engineering, retrieval-augmented generation (RAG), and AI-enabled tools in the software development lifecycle. Familiarity with Agile delivery and JIRA is required. Experience in a large…
Added 17 mins ago
UT
Sr Python Engineer #26-21269
US Tech Solutions
Toronto, ON
- $100 to $105 CAD / hour
- Contract
Client is seeking an Application Developer - Sr Python Engineer to support a project-based vendor integration initiative. The engineer will design and maintain secure, scalable Python…
Added 17 mins ago
KR
AI Security Research Engineer
KTek Resourcing
Toronto, ON
- Contract
Technical Security Research Engineer to research, prototype, evaluate, and operationalize emerging cybersecurity capabilities. This is a hands-on role for someone who can move from a…
Added 17 mins ago
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GenAI Engineer (local to Quebec only)
Apptad
Montreal, QC
- Full-time
Job Title: GenAI Engineer (local to Quebec only)
Added 32 mins ago
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Software Engineer (Ottawa On-site)
TechInsights
Ottawa, ON
- Full-time
As a Software Engineer on the Circuit Analysis Tools team, you’ll turn complex customer and business problems into reliable software that people value. You’ll work closely with Product,…
Added 32 mins ago
II
Lead Data Engineer
Ipsos in Canada
Vancouver, BC
- $130,000 to $140,000 CAD / year
- Full-time
Continuously troubleshoot and improve existing infrastructure and codebases, and responsibly incorporate AI/LLM-based tools where they improve engineering productivity and quality.
Added 32 mins ago
II
Senior Data Engineer
Ipsos in Canada
Vancouver, BC
- $100,000 to $110,000 CAD / year
- Full-time
Ingest and assemble data from various disparate sources using a variety of tools, including Python and SQL.
Added 32 mins ago
A
AI Platform Engineer – DevOps Experience : Halifax, Nova Scotia : FTE
AceStack
Halifax, NS
- Full-time
Job Title: AI Platform Engineer – DevOps Experience
Added 32 mins ago
KG
RPA Platform Engineer
K&K Global Talent Solutions INC.
Toronto, ON
- Full-time
The Senior Platform Engineer develops, maintains, and manages Automation platform on premise, AWS cloud and vendor SaaS to enable automation across the bank and core operations enabling the…
Added 32 mins ago
X
Sr. Electrical Engineer
Xanadu
Toronto, ON
- Full-time
…photonic quantum computers. In the role of senior electrical engineer, you will contribute your experience spanning precision analog measurement and digital control. You will join a growing…
Added 32 mins ago
ES
Senior Databricks Data Platform Engineer
Enterprise Solutions Inc.
Montreal, QC
- Contract
Title: Senior Databricks Data Platform Engineer
Added 1 hour ago
BH
AI-Native Client Success Manager
Bask Health
Remote, Canada
- Full-time
- Remote
With hundreds of features to meet the unique needs of Telehealth, we put all the tools in our customers' hands for success.
Added 1 hour ago
BH
AI Customer Growth Manager
Bask Health
Remote, Canada
- Full-time
- Remote
With hundreds of features to meet the unique needs of Telehealth, we put all the tools in our customers' hands for success.
Added 1 hour ago
DP
Product Engineer
Dakota Prep
Canada
- Full-time
…technical enough to build: you’ll ship real features with AI coding tools, read and reason about the codebase, and get your work through code review. You also have good design sense, enough…
Added 1 hour ago
DD
Landing Gear Engineer
Dominion Dynamics
Canada
- Full-time
Model deployment, retraction, and drop-test dynamics with multibody simulation tools.
Added 1 hour ago
DD
Flight Controls Engineer
Dominion Dynamics
Canada
- Full-time
Added 1 hour ago
DD
Mission Systems Engineer
Dominion Dynamics
Canada
- Full-time
Added 1 hour ago
PI
Head of Marketing and Brand
Pack-Smart Inc.
Concord, ON
- $100,000 to $120,000 CAD / year
- Full-time
Turn that knowledge into demonstrations, application stories, photography, video, technical content and sales tools. Explain how a capability works, the conditions under which it operates…

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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