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Added 10 mins ago
Associate, Direct Activation
WPP Media
Toronto, ON
Lead Optimistically by Championing Growth and Development to Mobilize the Enterprise.
Added 10 mins ago
Associate, Direct Activation
WPP Media
Toronto, ON
Lead Optimistically by Championing Growth and Development to Mobilize the Enterprise.
Added 10 mins ago
Director, Performance Marketing
Brex
Vancouver, BC
You will lead Brex's performance marketing strategy and paid media investments, driving customer acquisition, revenue growth, and brand awareness across an expanding portfolio of channels.
Added 25 mins ago
P
Sales Development Representative
ParagraphAI
Toronto, ON
- Full-time
ParagraphAI is a Toronto-based AI technology company building products that help people work smarter. Our AI-powered applications have reached over 1 million users, and we're looking for…
Added 55 mins ago
SM
RQ11743 – Systems Testing/QA Specialist – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Lead defect triage and monitor defects through resolution and closure.
Added 55 mins ago
SM
RQ11618 – UX Designer – Junior
S M Software Solutions Inc
Toronto, ON
- Internship
Ability to define and lead UX projects, design workshops, and alignment sessions with stakeholders and business users.
Added 55 mins ago
SM
RQ11737 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Added 55 mins ago
SM
RQ00833 – Program Manager – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
This role will lead PHO efforts for the PHDU itself and the IIS data product. We are seeking a Senior Program Manager to provide structured program and portfolio management leadership for…
Added 55 mins ago
SM
RQ11742 – Systems Testing/QA Specialist – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Lead defect triage and monitor defects through resolution and closure.
Added 55 mins ago
SM
29954-RFR-DTS-071 – Project Manager
S M Software Solutions Inc
Winnipeg, MB
- Full-time
We are seeking an experienced Project Manager with a minimum of 10 years of experience managing Information Technology projects, along with a valid PMP or PRINCE2 Practitioner…
Added 1 hour ago
A
Cloud Infrastructure & Security Lead
Azoma
ON · Ontario, Canada
- Full-time
Added 1 hour ago
O
Sales Business Development
ONGroupOfCompanies.ca
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Added 1 hour ago
Team Lead-Retail
Roots
Toronto, ON
…brand’s legacy. If you bring passion to everything you do, lead with integrity, and believe in the power of collaboration to drive growth, we’d love to have you on our…
Added 2 hours ago
UO
Research Profile Officer
University of Victoria
Victoria, BC
- Full-time
Lead cross-team projects to ensure consistent messaging, brand awareness and effective promotion of research strengths across all communication and marketing channels.
Added 2 hours ago
NM
Agriculture Equipment Technician
Nelson Motors and Equipment
Radville, SK
- Full-time
We're looking for Agricultural Equipment Technicians who lead by example, support a strong team environment, and deliver service excellence that reflects our promise of reliable,…
Added 2 hours ago
AP
Account Manager, Fulfillment and Logistics
AMZ Prep®
Mississauga, ON
- Full-time
…run without friction. You will report to our Client Success Lead and work closely with Operations, Finance, Sales and…
Added 2 hours ago
Production Mechanical Technician
Apotex
Brantford, ON
Keep abreast of all changes and advances in company policies and new technology.
Added 2 hours ago
Mechanical Technician
Apotex
Toronto, ON · North York, ON
Keep abreast of all changes and advances in company policies and new technology.
Added 2 hours ago
S
Account Executive
Shipday
Canada
- Full-time
…outbound sales. The role must be able to determine how the lead can benefit from leveraging shipday's delivery automation solutions, demonstrate how the product works, and ultimately show…
Added 2 hours ago
M
Business System Analyst
Microserve
Port Coquitlam, BC
- Full-time
Serve as a key bridge between supply chain, retail operations, and the technology systems that support business functions. This includes:
Added 2 hours ago
Team Lead-Retail (Days, Evenings, Weekends)
Roots
Belleville, ON
…brand’s legacy. If you bring passion to everything you do, lead with integrity, and believe in the power of collaboration to drive growth, we’d love to have you on our…
Added 2 hours ago
R
VP, Business Development - Canada
ReVisionz
Calgary, AB
- Full-time
Opportunity Qualification: Qualify opportunities early on fit, budget, timing and decision process, and keep lead and deal records accurate and current in the CRM
Added 2 hours ago
R
Director, Business Development - Canada
ReVisionz
Remote, Canada
- Full-time
- Remote
Opportunity Qualification: Qualify opportunities early on fit, budget, timing and decision process, and keep lead and deal records accurate and current in the CRM.
Added 2 hours ago
R
VP, Business Development - Canada
ReVisionz
Remote, Canada
- Full-time
- Remote
Opportunity Qualification: Qualify opportunities early on fit, budget, timing and decision process, and keep lead and deal records accurate and current in the CRM.
Added 3 hours ago
Associate, Direct Activation
WPP Media
Toronto, ON
Lead Optimistically by Championing Growth and Development to Mobilize the Enterprise.

Amazon Science

Applied Scientist, Amazon Canada Technology, Amazon Canada

Vancouver, BC, Canada

Full-time

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Applications open in a new tab.

Job details

Job type: Full-time
Apply by: Nov 23, 2026
Experience: 3+ years of building models for business application experience
Posting language: English
Posted: Oct 24, 2026

Original job description

Description

Do you want to solve unique challenges specific to the Canadian market? Are you looking to make an impact on a digital commerce landscape through science?

We are hiring an Applied Scientist to join Amazon Canada Technology and push the science boundaries for Canada: the reasoning LLMs, embedding models, cross-encoder rankers, and multi-objective optimization systems that turn billions of products into the right answer for hundreds of millions of Canadian customers. The role spans the full model lifecycle, from understanding and deciphering where the problem lies, building models, mid-training reasoning models on data such as shopping, returns, reasoning, localization to aligning the models with customers on dimensions that matter for shopping through fulfillment. You will be a pioneer on this team and will own defining the long-term Science strategy and execute on the same by partnering closely with several partner teams such as Core Search, Returns and work with CA Product Managers, Software Engineering and BI/DEs.

Key job responsibilities

Develop personalized multi-modal thinking-LLM techniques that reason about customers, search, queries, ranking and products across both primary and secondary languages.
Train large language models on various data signals and sets: domain-adaptive continued pre-training, reinforcement learning shopping reasoning traces, instruction tuning for natural-language shopping queries.
Analyze Canada (CA) ranking-quality gaps using offline metrics and benchmark CA model staleness and architecture against other marketplace (e.g. US, EU, JP) equivalents.
Formulate falsifiable ranking hypotheses linking a specific feature, architecture, or training change to predicted metric movement.
Run standardized offline evaluation of model candidates; validate feature statistical distributions and coverage in-locale to detect anomalies; own and lead experiments to drive improvements on offline and online experiment benchmarks.
Lead error analysis on failing query segments and segment-level deep dives (head/torso/tail, category, device), surfacing CA-specific failure modes such as bilingual and thin-category gaps.
Own metric-tradeoff analysis and acceptable-regression boundaries, bridging model behavior and CA business priorities.
Partner with teams such as Core Search on hypotheses, model training, and quality gates (MTBR / WLBR / SSAI).
Classify feature-expansion effort tiers (available / pipeline extension / locale training / infeasible) combining locale knowledge with science judgment.

About The Team

Amazon.ca Technology builds the products and services millions of Canadians rely on every day. Our teams tackle challenges unique to the Canadian market while contributing to Amazon initiatives that span the globe - giving you the best of both worlds: meaningful local impact and the scale of global tech. If you want to help shape Canada's digital commerce landscape within a collaborative Canadian work culture, this is the place to do it.

Basic Qualifications

3+ years of building models for business application experience
Experience in CS, CE, ML or related field
Experience programming in Java, C++, Python or related language
Experience in any of the following areas: algorithms and data structures, parsing, numerical optimization, data mining, parallel and distributed computing, high-performance computing

Preferred Qualifications

Experience using Unix/Linux
PhD, or a Master's degree and experience in CS, CE, ML or related field
Experience in understanding performance metrics and developing them to measure progress against key performance indicators

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

The base salary range for this position is listed below. As a total compensation company, Amazon's package may include other elements such as sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon offers comprehensive benefits including health insurance (medical, dental, vision, prescription, basic life & AD&D insurance), Registered Retirement Savings Plan (RRSP), Deferred Profit Sharing Plan (DPSP), paid time off, and other resources to improve health and well-being. We thank all applicants for their interest, however only those interviewed will be advised as to hiring status.

CAN, BC, Vancouver - 149,300.00 - 249,300.00 CAD annually

CAN, ON, Toronto - 149,300.00 - 249,300.00 CAD annually

Apply About employer

More about this job

Responsibilities

Develop and evaluate personalized, multimodal language and ranking models for Canadian shopping, including training models on shopping, reasoning, and localization data. Define the science strategy, analyze Canada-specific quality gaps and trade-offs, lead experiments, and partner with search, product, engineering, and data teams to improve customer outcomes.

Requirements

Candidates need at least three years of experience building models for business applications, a background in computer science, computer engineering, machine learning, or a related field, and programming experience in Java, C++, Python, or a similar language. Experience with algorithms and data structures, optimization, data mining, or distributed and high-performance computing is required; Unix/Linux experience and a master's degree or PhD are preferred.

Skills

Applied Science
Machine Learning
Large Language Models
Reasoning Models
Embedding Models
Cross-Encoder Ranking
Multi-Objective Optimization
Model Training
Reinforcement Learning
Instruction Tuning
Ranking Evaluation
Experimentation
Error Analysis
Python
Java
C++

Benefits

Health Insurance
Dental Insurance
Vision Insurance
Prescription Insurance
Basic Life and Accidental Death and Dismemberment Insurance
Deferred Profit Sharing Plan
Paid Time Off
Sign-On Payments
Restricted Stock Units

Visa sponsorship

Not detected in the job text

Keywords

Applied Science
Machine Learning
Large Language Models
Reasoning Models
Embedding Models
Cross-Encoder Rankers
Multi-Objective Optimization
Multimodal Models
Domain-Adaptive Continued Pre-Training
Reinforcement Learning
Instruction Tuning
Natural-Language Queries
Search Ranking
Offline Evaluation
Online Experiments
Ranking Quality
Metric Trade-Off Analysis
Error Analysis
Feature Validation
Localization
Bilingual Data
Algorithms and Data Structures
Numerical Optimization
Data Mining
Parallel and Distributed Computing
High-Performance Computing
Python
Java
C++
Unix/Linux

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