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Added 1 month ago
R
Full Stack Developer, AI
RBC
Toronto, ON
- Full-time
Develop and maintain full-stack solutions across a diverse tech stack (Java, Python, Node.js, Angular, Spring Boot), contributing to both front-end and back-end features while continuously…
Added 6 months ago
BT
Software Engineer I
Beanfield Technologies Inc.
Toronto, ON
- $90,000 to $110,000 CAD / year
- Full-time
Core Development: Write clean, efficient, and scalable code in Python and Java.
Added 1 month ago
S
Senior Core Java Developer with E-trade exp.
Synechron
Toronto, ON
- $110,000 to $120,000 CAD / year
- Full-time
We are seeking a highly skilled Senior Java Developer with AI experience to join the FIC Global Spread Products eTrading Technology team. The successful candidate will contribute to the…
Added 1 month ago
HC
Co-op Engineer - openJiuwen AI Agent Platform
Huawei Canada
Markham, ON
- Internship
Design and develop core capabilities of the openJiuwen AI Agent Platform, including Agent Frameworks, Workflows, Tool Calling, MCP, and Multi-Agent collaboration.
Added 1 month ago
E
Sr Applied Scientist, Recommendations
eBay
Toronto, ON
- Full-time
…our website and native app platforms. Recommendations are a core part of how our buyers navigate eBay’s vast and varied inventory. Our team develops state-of-the-art recommendations…
Added 1 month ago
JG
Core Java Developer
J&M Group
Montreal, QC
- Contract
We are hiring for a Core Java Developer. The role focuses on developing real-time, low-latency, multi-threaded server-side applications using Core Java.
Added 1 month ago
LC
Senior Technical Manager
Loblaw Companies Limited
Toronto, ON
- Full-time
…This role involves leveraging advanced technologies, including Java/Spring Boot microservices, Google Cloud Platform with Kubernetes, and modern front-end frameworks such as React. Here,…
Added 23 days ago
R
Associate Director - Murex Reporting Lead Developer
RBC
Toronto, ON
- Full-time
We are seeking an experienced highly motivated Lead Murex Reporting Developer for Credit & Rates Derivatives’ trade management, reporting and settlement system (Murex). You will oversee…
Added 1 month ago
RB
Associate Director - Murex Reporting Lead Developer
Royal Bank of Canada
Toronto, ON
- Full-time
We are seeking an experienced highly motivated Lead Murex Reporting Developer for Credit & Rates Derivatives’ trade management, reporting and settlement system (Murex). You will be working…
Added 1 month ago
L
Technology Director- Global Sourcing Technology , Supply Chain
lululemon
Vancouver, BC
- Full-time
…distribution technology. Our team works in close partnership with core business units to ensure that our supply chain remains agile, efficient, and responsive to ever-evolving market…
Added 1 month ago
C
Junior DevOps Specialist
CGI
Toronto, ON
- Full-time
The CGI GTO Transformation team is the creative force behind CGI Unify360 management platform, one of the core components of our worldwide service offering for transformational IT…
Added 1 month ago
MT
Engineering Manager, AI-First Cloud Development
Mach7 Technologies
Waterloo, ON
- Full-time
Experience with AWS, JAVA, C#/.NET, React, PostgreSQL, Kubernetes/container platforms, DevOps practices and CI/CD, healthcare technology, medical imaging, or regulated software would be…
Added 1 month ago
VV
Java Developer Remote 1015
Veracity Ventures Inc.
Remote, Canada
- Full-time
- Remote
A leading organization is looking for an experienced Java Developer to join its technology team and contribute to the development of scalable, secure, and high-performance enterprise…
Added 1 month ago
Integration Developer
Mariner
Halifax, NS
Mariner’s purpose has always been to be a great, everlasting technology company and the core values that guide us every day are:
Added 1 month ago
S
Tech Lead - Java fullstack (Angular)
Synechron
Montreal, QC · MDC – Montreal
- Full-time
…Il recherche un développeur backend expérimenté, maîtrisant Core Java et Spring Boot, pour comprendre, enrichir et améliorer les processus ETL existants. Ce rôle offre une opportunité de…
Added 1 month ago
CS
Senior Technical Architect, Application Development & Support
Canadian Standards Association
Toronto, ON
- Full-time
Acts as lead developer and technical design authority for applications in scope, setting coding standards, design patterns, branching strategy, and definition of done for internal and…
Added 1 month ago
Integration Developer
Mariner
Halifax, NS
Mariner’s purpose has always been to be a great, everlasting technology company and the core values that guide us every day are:
Added 1 month ago
Q
Firmware Engineer – SerDes PHY (all levels)
Qualcomm
Toronto, ON
- Full-time
3+ years of work experience with Programming Language such as C, C++, Java, Python, etc.
Added 1 month ago
WT
Senior Java Software Engineer
Wissen Technology
Montreal, QC
- Full-time
Experience with Java frameworks like Spring, Hibernate, Spring boot.
Added 1 month ago
C
Applications Development Sr Programmer Analyst - Assistant Vice President
Citi
Mississauga, ON
- Full-time
We are seeking an experienced and motivated Senior Java Developer to spearhead the development of robust, scalable, and innovative enterprise applications. The ideal candidate will possess…
Added 1 month ago
JG
Spark Scala Java Developer
J&M Group
Toronto, ON
- Contract
Hands-on experience with Apache Spark (Core| SQL| DataFrames| Datasets).
Added 1 month ago
Senior Java Developer - Montreal - Fintech
Adaptive Financial Consulting
Montreal, QC
We are now looking for a Senior Java Developer to join our Montreal team on a new exciting project!
Added 1 month ago
T
Java Fullstack Developer with React
Talenzaa
Mississauga, ON
- Full-time
Backend: Java (Core & Advanced), Spring Boot, Spring Security, JPA/Hibernate, Microservices Architecture.
Added 1 month ago
SI
Lead Architect - Technical Delivery & Solutions
SIA Innovations Inc.
Montreal, QC
- Full-time
Your responsibilities are a direct expression of SIA's five core values.
Added 19 days ago
OT
Sr. Manager, Software Development (SaaS)
Open Text Corporation
Richmond Hill, ON
- Other
…Information Management as a Service platform powering the OpenText™ Core family of multi-tenant Software as a Service (SaaS) applications and Information Management Services. It provides…

eBay

Sr Applied Scientist, Recommendations

Toronto, ON, Canada

C$142,400 - C$190,100 · Full-time

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Job details

Pay: C$142,400 - C$190,100
Job type: Full-time
Experience: MS in Computer Science or related area with 3 years of relevant work experience (or BS/BA with 5 years) in ML / AI / Data Engineering
Posting language: English
Posted: Aug 28, 2026

Original job description

At eBay, we're more than a global ecommerce leader - we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts.

Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work - every day. We're in this together, sustaining the future of our customers, our company, and our planet.

Join a team of passionate thinkers, innovators, and dreamers - and help us connect people and build communities to create economic opportunity for all.

About the team and the role:

Our Recommendations team works on delivering item recommendations at scale and in near real time to our buyers on our website and native app platforms. Recommendations are a core part of how our buyers navigate eBay’s vast and varied inventory. Our team develops state-of-the-art recommendations systems, including deep learning based retrieval systems for personalized recommendations, machine learning ranking models, as well as advanced MLOps in a high volume traffic industrial e-commerce setting.

We are exploring a new generation of recommender systems powered by Large Language Models and other emerging paradigms in AI. We are looking for an Applied Scientist and innovator who can drive state of the art ML modeling and get systems into production at eBay scale.

What you will accomplish:

Build data pipelines needed to support user input, recall and ranking, model training and inference, working with architects and other engineering peers.
Track the fast paced world of AI and apply innovative techniques to unique and large data sets of unstructured multimodal data representing eBay's vast and varied inventory, and millions of users.
Develop and deploy innovative models in the context of recommender systems.
Deploy big data technology and large scale data pipelines to create magical AI applications and user experiences.
Have a real impact on how shoppers interact with one of the world's largest e-commerce marketplaces to find what they love every day.
Drive marketplace GMB as well as advertising revenue via organic and sponsored recommendations.

What you will bring:

MS in Computer Science or related area with 3 years of relevant work experience (or BS/BA with 5 years) in ML / AI / Data Engineering
Experience in production engineering practices and software development in an OO language (Scala, Java, etc.)
Experience in AI applied research, preferably in Natural Language Processing (NLP), deep learning, and industrial recommender systems
Experience in big data processing and analysis, e.g. Hadoop, SQL, Spark, Pyspark is required
Experience with using cloud services, big data pipelines and databases

Additional Details

The base pay range for this position is expected in the range below:

C$142,400 - C$190,100

Base pay offered may vary depending on multiple individualized factors, including location, skills, and experience. The total compensation package for this position may also include other elements, including a target bonus and restricted stock units (as applicable) in addition to a full range of medical, financial, and/or other benefits (including RRSP eligibility, various paid time off benefits, such as PTO and parental leave). Details of participation in these benefit plans will be provided if an employee receives an offer of employment.

This job posting relates to an existing vacancy within eBay.

eBay is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, and disability, or other legally protected status. If you have a need that requires accommodation, please contact us at talent@ebay.com. We will make every effort to respond to your request for accommodation as soon as possible. View our accessibility statement to learn more about eBay's commitment to ensuring digital accessibility.

We use cookies to enhance your experience and may use AI tools for administrative tasks in the hiring process. To learn how we handle your personal data and use AI responsibly, please visit our Talent Privacy Notice, Privacy Center and AI Hiring Guidelines.

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More about this job

Responsibilities

Develop and deploy state-of-the-art machine learning models and recommender systems to enhance user experience on eBay's platforms. Build and maintain scalable data pipelines to support model training, inference, and real-time recommendations.

Requirements

Requires an MS in Computer Science with 3 years of experience or a BS with 5 years in ML, AI, or Data Engineering. Candidates must have proficiency in OO languages like Scala or Java and experience with big data technologies.

Skills

Machine learning
Deep learning
Recommender systems
Natural language processing
Scala
Java
Hadoop
SQL
Spark
Pyspark
Data engineering
MLOps
Large language models
Big data processing
Cloud services

Benefits

Medical benefits
Financial benefits
RRSP eligibility
Paid time off
Parental leave
Restricted stock units
Bonus

Visa sponsorship

Not detected in the job text

Keywords

Applied Scientist
Machine Learning
Deep Learning
Recommender Systems
NLP
MLOps
Large Language Models
Big Data
Hadoop
Spark
Pyspark
SQL
Scala
Java
Data Pipelines
Cloud Services
E-commerce
Multimodal Data
Retrieval Systems
Ranking Models
Software Development
Artificial Intelligence

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