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Added 13 mins ago
Account Manager
Syntronic
Ottawa, ON
Are you ready to join a leading global engineering design house specializing in embedded software/hardware, electronics, and electro-mechanics? We are seeking an energetic and enthusiastic…
Added 28 mins ago
SH
Controls Specialist
Silver Hills Bakery
Mission, BC
- $85,000 to $110,000 CAD / year
- Full-time
Provide expert troubleshooting, technical support, and root cause analysis for complex electrical, controls, and robotics issues relating to production equipment, coordinating efforts, and…
Added 29 mins ago
II
Test Lead
ITC Infotech
Vancouver, BC
- $100,000 to $115,000 CAD / year
- Full-time
ITC Infotech is a leading global technology services and solutions provider, led by Business and Technology Consulting. ITC Infotech provides business-friendly solutions to help clients…
Added 43 mins ago
VS
Software Systems Engineer - Interferometry/microscopy
VIAVI Solutions
Ottawa, ON
- Full-time
Develops software and tools in support of design, infrastructure and technology platforms, including operating systems, compilers, routers, networks, utilities, databases, cloud-based and…
Added 43 mins ago
UH
Digital Technician (IT Service Desk Agent)
University Health Network
Toronto, ON
- Contract
Provide first level technical support through phone, email and chat to resolve end user issues and support requests
Added 43 mins ago
KG
Technical Support Engineer
K&K Global Talent Solutions INC.
ON · Ontario, Canada
- Contract
We are seeking a highly organized and proactive IT Asset Management & Deskside Support Specialist. In this high-impact role, you will own the end-to-end lifecycle of IT hardware and…
Added 58 mins ago
AI Engineer
Eclipse Automation
Cambridge, ON
We need a AI Engineer who can turn architecture and technical plans into secure, reliable, production-ready solutions. Approximately 70–80% of the role will focus on AI systems, agents,…
Added 59 mins ago
SH
Controls Specialist
Silver Hills
Mission, BC
- $85,000 to $110,000 CAD / year
- Full-time
Provide expert troubleshooting, technical support, and root cause analysis for complex electrical, controls, and robotics issues relating to production equipment, coordinating efforts, and…
Added 59 mins ago
II
Embedded Electrical Engineer
Intero Integrity
Toronto, ON
- Full-time
Intero Integrity Services helps pipeline operators keep critical infrastructure safe and running. We inspect pipelines from the inside using sensors, robotics and data analysis to find…
Added 1 hour ago
C
Senior Broadcast Technologist (T & I) (On-site)
CBC/Radio-Canada
Toronto, ON
- Full-time
We are looking for a Broadcast and IT Systems Specialist to support the studio, content creation, and presentation groups with technical issues as well as help implement groundbreaking…
Added 1 hour ago
AI
Technical Product Manager - Platforms & Integrations
Accurant International
Remote, Canada
- $120,000 to $140,000 CAD / year
- Full-time
- Remote
We are seeking a technically strong, hands-on Technical Product Manager – Platforms & Integrations to help build and scale our Distributed Energy Resource Management System (DERMS) and…
Added 1 hour ago
Senior Consultant, Professional Services
Bell
Montreal, QC
Implementation Support: Prepare specific device configurations (routers/switches) and technical implementation plans to be executed by technicians.
Added 1 hour ago
AE
Analyst, End User Services & Service Desk Support
Alberta Energy Regulator (AER)
AB · Edmonton, AB
- Full-time
The End User Services & Client Support team provides hands-on technical support to Alberta Energy Regulator (AER) staff, making sure they have the devices, tools, and help they need to do…
Added 1 hour ago
AE
Analyst, End User Services & Service Desk Support
Alberta Energy Regulator (AER)
Calgary, AB
- Full-time
The End User Services & Client Support team provides hands-on technical support to Alberta Energy Regulator (AER) staff, making sure they have the devices, tools, and help they need to do…
Added 1 hour ago
Network Designer
Rogers Communications
Brampton, ON · Toronto, ON
Author technical engineering documentation (eg. Engineering Design Specification Documents, Acceptance Test Plans, Work orders and Method of Procedures (MoP) which facilitates configuration…
Added 1 hour ago
CT
IT Operations Specialist
Clutch Technologies Inc.
Mississauga, ON
- $55,000 to $70,000 CAD / year
Headquartered in Toronto, Clutch was founded in 2017 and currently services Ontario, British Columbia, New Brunswick, Nova Scotia, and Prince Edward Island. Clutch is backed by a number of…
Added 1 hour ago
Service Desk Technician - Tier 2 "V" (2026-13-41)
University of Windsor
Windsor, ON
Technical Support and Customer Service: Respond to service requests, diagnose and escalate technical issues, provide user guidance and support staff onboarding.
Added 1 hour ago
SS
GPU & AI Optimization Engineer
Sapphire Stream Technology
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Sapphire Stream Technology (SST) is a technology and engineering solutions company specializing in software development, AI and machine learning, semiconductor technologies, automotive…
Added 2 hours ago
PQ
Help Desk Analyst
Prime Quadrant
Toronto, ON
- $70,000 to $85,000 CAD / year
- Full-time
The Helpdesk Analyst is the first point of contact for technology support across the organization. This role is responsible for resolving day-to-day technology issues, supporting employee…
Added 2 hours ago
Forest Protection Specialist (Environmental Analyst 1(A)-(B)2)
The Government of Nova Scotia
Shubenacadie, NS
Reporting to the Manager of Risk Services, the Forest Protection Specialist is responsible for providing scientific and technical support to assess and manage wildfire hazards. This role…
Added 2 hours ago
C
FX Application Support Analyst - Assistant Vice President
Citi
Mississauga, ON
- Full-time
As an FX Application Support Analyst, you will keep Citi's business-critical foreign exchange trading platform running for trading desks and operations teams around the world. You will join…
Added 2 hours ago
DC
Building Automation Support Technician, Senior
Delta Controls
Surrey, BC
- Full-time
Reporting to the Technical Services Manager, you will become part of a dynamic technical team that provides product support and services to Delta IBT’s worldwide network of customers as…
Added 2 hours ago
DC
Building Automation Support Technician, Junior
Delta Controls
Surrey, BC
- Full-time
Reporting to the Technical Services Manager, you will become part of a dynamic technical team that provides product support and services to Delta IBT’s worldwide network of customers as…
Added 2 hours ago
Director, Surveys and Geomatics
Infrastructure Ontario
Toronto, ON
Infrastructure Ontario (IO), an Ontario crown corporation, provides a wide range of services to support the Ontario government’s initiative to modernize and maximize the value of public…
Added 2 hours ago
M
Application Support Specialist
Multimatic
Multimatic Corporate IT
- Full-time
Multimatic is a privately held, global enterprise supplying engineered components, systems and services to the automotive industry. The company’s core competencies include the development…

Sapphire Stream Technology

GPU & AI Optimization Engineer

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

Full-time

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Job details

Job type: Full-time
Apply by: Dec 4, 2026
Posting language: English
Posted: Nov 4, 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 workloads, including kernel fusion, execution parameters, and memory layouts, to improve performance and power efficiency. Use AI-assisted workflows and profiling tools, support development across pre- and post-silicon environments, and collaborate with software, hardware, runtime, and machine learning teams.

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 have experience developing, debugging, and testing complex software.

Skills

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

Visa sponsorship

Not detected in the job text

Keywords

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

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