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Added 10 days ago
Ingénieur(e) Électrique Sénior // Senior Electrical Engineer
XNRGY Climate Systems
Longueuil, QC
Full-time
…maintien de produits existants, d’ingénierie sur commande (Engineer-to-Order) et d’installation sur site, dans le respect des échéanciers et des…
Added 5 months ago
Specialist - Package Implementation
LTM
Ontario · Ontario, Canada
$120,000 to $130,000 USD / year
Full-time
The Product Engineer must be able to work closely with the business development and support teams to ensure the product is designed and implemented to meet customer requirements.
Added 2 months ago
Hardware Engineer, Power Design, onsite Kanata
Ciena
Ottawa, Ontario
Full-time
Product development experience in micro electronic power
Added 10 days ago
Senior Full Stack Engineer
Strada
Toronto, ON
Full-time
As a senior full-stack engineer, you'll have significant ownership and work closely with customers to build products they'll love. This is a high-impact role for someone who wants to shape…
Added 10 days ago
Software Engineer
Outschool
Canada
$90,000 to $229,500 CAD / year
Full-time
…to engage in love of learning, all through an agentic-first development paradigm. There is a wide variety of exciting and high-impact engineering challenges for the right candidate from…
Added 10 days ago
Software Development Engineer II, Advertiser Growth Engine
Amazon
Toronto, ON
…Amazon Ad’s ecosystem. You will be responsible for the entire development lifecycle, from feature ideation to deployment to operational excellence. The individual in this role will have…
Added 10 days ago
Software Engineer
Outschool
Canada
$90,000 to $229,500 CAD / year
…to engage in love of learning, all through an agentic-first development paradigm. There is a wide variety of exciting and high-impact engineering challenges for the right candidate from…
Added 4 months ago
Staff Product Engineer - Canada
Ashby
Remote, Canada
$256,000 to $380,000 CAD / year
Full-time · Remote
Hi 👋🏾 I’m Abhik, Ashby's Co-Founder and VP of Engineering. We’re looking for a versatile, persistent product engineer who’s not afraid to set up reusable building blocks across the stack…
Added 4 months ago
HW Test Engineer
Nokia
Ottawa, ON
Full-time
We are currently seeking a HW Test Engineer to define Test Strategy, Test SW and HW required for cost-effective, automated test solutions for manufacturing of network equipment
Added 5 months ago
Full Stack Engineer, Early Career
Feathery
Remote, Canada
Full-time · Remote
We’re hiring a Full Stack Engineer to help build and scale core product capabilities end-to-end. This role is ideal for someone early in their career who enjoys owning features across the…
Added 4 months ago
AI Product Engineer, Games
Puzzle Cats
Remote, Canada
Full-time · Remote
We’re looking for an AI Product Engineer who wants to build something big and move fast. This is a hands-on, highly product-oriented role for someone who wants to invent, ship, and scale…
Added 16 days ago
Design Engineer - System Integration | NPI Engineering
BETA Technologies
Montreal, QC
…design quality. You will also be involved in R&D activities, new product development and anything else along the path of developing and efficiently designing the…
Added 16 days ago
Design Engineer - Structure Integration | NPI Engineering
BETA Technologies
Montreal, QC
…design quality. You will also be involved in R&D activities, new product development and anything else along the path of developing and efficiently designing the…
Added 5 months ago
Software Development Engineer, Chronicle Analytics
Amazon
Vancouver, British Columbia
- 3+ years of non-internship professional software development experience
Added 2 months ago
Engineer - Design
Linamar Corporation
Guelph, Ontario
Full-time
Linamar Corporation is a Canadian-founded global manufacturer, renowned for its advanced engineering and innovative product development across diverse industries and markets. Our journey…
Added 1 month ago
Software Development Engineer II, ML Platform
Remitly
Burnaby, BC
Full-time
We're seeking a Senior Engineer to shape the tooling and infrastructure that power the next generation of scalable AI / ML products at Remitly. In this role, you'll collaborate with AI /…
Added 5 months ago
Sr. Software Development Engineer, Alexa Connections
Amazon
Vancouver, British Columbia
…communication? Join our dynamic Alexa Connections team as a Sr. Software Development Engineer, and lead futuristic initiatives that will shape the next generation of intelligent,…
Added 5 months ago
Software Development Engineer, Alexa Connections
Amazon
Vancouver, British Columbia
…communication? Join our dynamic Alexa Connections team as a Software Development Engineer, and lead futuristic initiatives that will shape the next generation of intelligent, conversational…
Added 5 months ago
Software Engineer
RTX
Calgary, Alberta · Ontario
Full-time
…team. These positions will play a critical role in the design, development, integration, testing, and acceptance of cutting-edge training and simulation technologies. As a key member of…
Added 5 months ago
Application Engineer
Pioneer Transformers Mississauga
Mississauga, Ontario
Full-time
You will provide technical expertise, product support, and optimized transformer solutions to customers, sales teams, and internal stakeholders. You will act as a key link between…
Added 5 months ago
Software Quality Assurance and Automation Test Engineer -Automotive Infotainment
CIeNET Technologies
Markham, Ontario
Full-time
The software QA engineer will be an important member of our infotainment testing/verification team in Canada, which is part of the larger Global Engineering team working with our industry…
Added 10 days ago
Staff Software Engineer, App Runtime
Snowflake
Toronto, ON
Full-time
As a Staff/Principal Engineer, you will shape the product and its architecture. It’s a high leverage role - you will lead a team to scale and harden an early-stage, public-preview product.…
Added 2 months ago
Senior Java Engineer
Levio
Montreal, Quebec
We are seeking Senior Java Engineer for a major project in the banking industry in Montreal. This position is in hybrid mode in Montreal (3 days/week).
Added 5 months ago
Software Engineer - FullStack
Opendoor
Toronto, Ontario
…transform our technical architecture and user experience to a multi-product, personalized experience. We are looking for a product-focused Senior Full stack Engineer to join us in this…
Added 5 months ago
Solution Engineer (Pre-Sales) - All Levels (Canada)
Salesforce
Remote, Canada
Full-time · Remote
…aligning with the sales teams, as outlined above. The Solution Engineer role typically aligns with our Enterprise, Commercial or SMB segments. We are regularly looking for Solution…

Workday

Sr. Software Development Engineer / Principal Software Development Engineer

Toronto, ON, Canada

Job type: Full-time
Apply by: Sep 26, 2026
Posting language: English
Posted: Aug 27, 2026

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Original job description

About the Team

The AI Model Serving team is the engine behind every production Workday agent and machine learning use case. We own the services that power all production AI workloads, serving as the gateway to vendor-hosted LLMs on GCP and AWS Bedrock and operating the model deployment platform where Workday hosts and scales its models.

We host thousands of traditional ML models across sharded Ray Serve clusters. Our platform handles approximately 2,000 requests per second and peaks at greater than 10,000 requests per second in our largest cluster. We also provide a uniform interface for accessing models on Bedrock and Gemini, and the production model registry for Workday.

In the year ahead, we are focused on making our uniform vendor interface more robust, scaling our architecture to support more than 20 agents going into production, improving cost governance, exploring hosting open-source LLMs in our stack, evaluating a potential rewrite of the service in a different language for performance gains, and keeping pace with the rapidly evolving AI landscape.

Our culture is one of focus, camaraderie, and high performance. We are a friendly and dedicated group that takes pride in building and operating one of the most heavily used services at Workday. If you are energized by working on infrastructure that sits at the heart of Workday's AI strategy, this is the team for you.

About the Role

As either a Senior Software Development Engineer or a Principal Software Development Engineer on the AI Model Serving team, you will be a technical leader who helps shape the vision and direction of the platform alongside the engineering manager. You will play a central role in making critical design decisions, driving outcomes across the team, and setting a positive and inclusive team culture. In addition to the model serving platform, the team also owns the production model registry at Workday, and you will help guide its evolution and ensure it meets the needs of ML teams across the organization.

Your work will directly impact Workday's ability to serve AI at scale - from traditional ML models to the latest large language models powering Workday's agents.

Key Responsibilities:

Lead the team technically by making critical design decisions that drive performance, reliability, and scalability across the platform.
Design, implement, and maintain large-scale systems that enable moving ML models to production.
Write design documents to build consensus for new system components and enhancements to existing components.
Evaluate and uptake new technologies made available within Workday and across the broader industry.
Troubleshoot, improve, and scale continuous integration software pipelines.
Develop relationships with software engineers, machine learning engineers, and data scientists on partner teams.
Respond to alerts and debug production issues to maintain platform health and reliability.
Review pull requests and enforce consistency, performance, readability, and security across code bases.
Develop documentation to share knowledge with other engineers.

About You

(P5) Principal SDE Basic Qualifications

10+ years of related work experience in software development, with a focus on building and operating large-scale distributed systems.
Bachelor's degree in Computer Science, Engineering, or a related technical field (or equivalent practical experience).

Other Qualifications

Software Development and Distributed Systems: Deep experience designing, building, and scaling production-grade distributed systems. You understand the full software development lifecycle - from coding standards and testing to code reviews, source control management, and deployment - and you can apply that knowledge to complex, high-throughput platforms.
Python: Deep proficiency in Python, with extensive experience writing production-level code and building systems in Python-based frameworks.
LLMs and Traditional ML Models: Familiarity with both large language models and traditional machine learning models, including how they are served, scaled, and monitored in production environments. You understand the operational differences and can design platform abstractions that serve both effectively.
You can design and maintain monitoring strategies that provide clear insight into system health, performance, and cost.
Excellent written and verbal communication skills, including the ability to write clear design documents, articulate complex technical ideas, and build consensus across teams.
A collaborative approach to engineering, with experience mentoring other engineers and fostering an inclusive team environment.
Help set the product vision for the AI Model Serving platform in partnership with the engineering manager, bringing a product-oriented mindset to infrastructure decisions.

(P4) Sr. SDE Basic Qualifications

6+ years of related work experience in software development, with a focus on building and operating large-scale distributed systems.
Bachelor's degree in Computer Science, Engineering, or a related technical field (or equivalent practical experience).

Other Qualifications

Software Development and Distributed Systems: Deep experience designing, building, and scaling production-grade distributed systems. You understand the full software development lifecycle - from coding standards and testing to code reviews, source control management, and deployment - and you can apply that knowledge to complex, high-throughput platforms.
Python: Deep proficiency in Python, with extensive experience writing production-level code and building systems in Python-based frameworks.
LLMs and Traditional ML Models: Familiarity with both large language models and traditional machine learning models, including how they are served, scaled, and monitored in production environments. You understand the operational differences and can design platform abstractions that serve both effectively.
You can design and maintain monitoring strategies that provide clear insight into system health, performance, and cost.
Excellent written and verbal communication skills, including the ability to write clear design documents, articulate complex technical ideas, and build consensus across teams.
A collaborative approach to engineering, with experience mentoring other engineers and fostering an inclusive team environment.

Apply About employer

More about this job

Responsibilities

Lead the technical design and implementation of a large-scale AI model serving platform to support production ML workloads and agents. Ensure platform reliability, scalability, and performance while managing the production model registry.

Requirements

Requires a Bachelor's degree in Computer Science or a related field and 6 to 10+ years of experience in software development focusing on distributed systems. Deep proficiency in Python and familiarity with serving both traditional ML and LLMs in production environments are essential.

Skills

Distributed Systems
Python
Large Language Models
Machine Learning
System Design
Ray Serve
Cloud Infrastructure
CI/CD Pipelines
Model Serving
Scalability
Performance Tuning
Technical Leadership
Monitoring Strategies
API Design
Production Engineering
Collaboration

Visa sponsorship

Not detected in the job text

Keywords

Python
LLM
Machine Learning
Distributed Systems
Ray Serve
GCP
AWS Bedrock
Gemini
Model Registry
CI/CD
Scalability
High-throughput
Infrastructure
Production Engineering
Cloud Computing
API
Monitoring
System Architecture
AI Agents

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