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Added 4 months ago
MuleSoft Senior Developer- Enterprise
Slalom
Toronto, Ontario · Greater Toronto Area, Canada
Full-time
Job Title: MuleSoft Senior Developer- Enterprise (For Vacant Role)
Added 5 months ago
Senior Manager GRC
KPMG Canada
Toronto, Ontario
Full-time
Technical skills Java, JavaScript; REST/SOAP, JSON/XML; Python/PowerShell; SQL.
Added 4 months ago
Intermediate Software Developer
SRC CAN
Ottawa, Ontario
Full-time
SRC CAN Ltd is seeking an Intermediate Software Developer to contribute to the design, development, and delivery of next-generation EW Operational Support Systems (EWOSS) including…
Added 4 months ago
Senior Frontend Engineer
Forma.ai
Toronto, Ontario
$140,000 to $175,000 CAD / year
Full-time
Improve frontend architecture, performance, accessibility, testing, and developer experience.
Added 4 months ago
Développeur en tests logiciels - Software Developer in Test
OneSpan
Montreal, Quebec
Full-time
Programmation et script : Java (de préférence), Python, C#, JavaScript/TypeScript, Bash, Groovy.
Added 4 months ago
US Portfolio Manager
Hillsdale Investment Management Inc.
Toronto, Ontario · Greater Toronto Area, Canada
Full-time
Other programming knowledge a plus: R, Polars, Java, MATLAB, C/C++, etc.
Added 2 months ago
Sr Principal SW Systems Engineer (10342)
Extreme Networks
Toronto, ON
Full-time
Fluent in at least one programming language; expertise in Python, Java, or Go is highly preferred
Added 1 month ago
Senior Software Developer (Burnaby)
Clio
Burnaby, BC · Vancouver, BC
Full-time
We are currently seeking a Senior Software Developer to join our rapidly growing Engineering team. This role is for someone who is passionate about building innovative solutions and being…
Added 11 days ago
Senior Software Developer (Java)
Open Text Corporation
Richmond Hill, ON
Other
…multi-tenant SaaS applications. We are looking for a Senior Software Developer with a focus on Backend and AI development to join our platform development…
Added 2 months ago
UI React Developer (QTS)
Jay Analytix
Toronto, Ontario
Contract
We are seeking a UI React Developer with strong Redux experience to join the Quantitative and Technology Services (QTS) team, developing, improving, and supporting strategic applications…
Added 2 months ago
Développeur Java Agentique IA / Agentic AI Java Developer
Portage CyberTech
Montreal, Quebec
Full-time
Portage CyberTech is looking for a passionate Java Full Stack Developer with a strong R&D mindset and solid knowledge of Public Key Infrastructure (PKI), working on modern…
Added 2 months ago
NetSuite SCM Engineer - Inventory, WMS & Fulfillment
Lime
Remote, Canada
$102,000 to $143,000 CAD / year
Full-time · Remote
Programming & Integration Skills: Practical experience using object-oriented languages such as Java or Python, together with middleware solutions such as Celigo, Boomi, or Workato.
Added 10 days ago
Jr Java Developer
CanDeal
Toronto, ON
Full-time
Reporting to the Head of Markets Technology, the Jr. Java Developer works within the Information Technology (IT) team to develop internal APIs for applications and evolve internal and…
Added 10 days ago
Software Engineer in Test (ETL)
Kaizen Technologies
ON · Ontario, Canada
Contract
The candidate should be hands-on with Python or Java development, automation framework design, SQL, ETL/ELT pipeline testing, API testing, CI/CD, and healthcare data. Experience with HL7,…
Added 10 days ago
Full Stack Engineer
Randstad Enterprise
Montreal, QC
Contract
Job Title: Full Stack Developer (Java Springboot/Angular)
Added 10 days ago
Director, Developer Experience, Simplii Technology
Simplii Financial
Toronto, ON
Full-time
As Director of Developer Experience at Simplii Technology, you'll play a pivotal role in shaping the future of engineering at Simplii Financial. You’ll build and lead a new team dedicated…
Added 10 days ago
Business Analyst (Insurance)
Capgemini
Toronto, ON
Full-time
· Collaborate with development teams working on Java-based applications.
Added 10 days ago
peoplesoft HCM Specialist
HireTalent - Staffing & Recruiting Firm
Montreal, QC · Greater Montreal Metropolitan Area
Contract
System Maintenance: Oversee the administration of specialized HR Java-based applications and participate in the rigorous auditing of employee lifecycle data (hires, transfers, terminations).
Added 10 days ago
Financial Reporting Developer
LanceSoft, Inc.
Montreal, QC
Contract
Job Title: Regulatory/Financial Reporting Developer (Databricks, Snowflake, Axiom)
Added 11 days ago
Lead Full Stack Engineer
eBay
Toronto, ON
Full-time
Develop scalable, highly available applications, APIs, and services using technologies such as React, Node.js, Java, and Scala.
Added 10 days ago
Test Automation Developer - Winter 2027 Co-op/Intern
Definity Insurance Company
Waterloo, ON
Full-time
Proficiency in at least one programming language such as Java, Javascript or Python
Added 11 days ago
Director, DevOps Regulatory Engineering
RBC
Toronto, ON
Full-time
Translate regulatory, risk and security requirements into automated controls in CI/CD and developer tooling
Added 11 days ago
Senior AI and Agentic Developer
Accenture
Ottawa, ON · Toronto, ON · Montreal, QC
Full-time
As an Advanced AI, Large Language Model and Agentic AI Developer/Consultant, you will build production-grade AI applications that transform enterprise workflows. You will translate business…
Added 11 days ago
Jr Programmer Analyst Student (Hybrid)
TRIUMF
Vancouver, BC · TRIUMF
Full-time
Skills required include experience developing with Java, python, PHP, node.js and various supporting technologies including web server platforms(Tomcat, Glassfish, Wildfly, Docker), web…
Added 11 days ago
Radiation Simulations and Detection Systems Student (On-site)
TRIUMF
Vancouver, BC · TRIUMF
Full-time
Demonstrate intermediate knowledge of programming in C/C++ (or other relevant languages (Python, JAVA...)).

eBay

Lead Full Stack Engineer

Toronto, ON, Canada

Job type: Full-time
Experience: BS in Computer Science or related field with 10+ years of experience, or MS with 7+ years.
Posting language: English
Posted: Sep 10, 2026

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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 & Role

Join eBay's Ad-Tech Innovation team and help build the next generation of advertising for millions of buyers and sellers worldwide. As a Lead Full Stack Engineer, you'll drive end-to-end development of scalable advertising solutions, from engaging user experiences to backend services and data platforms. You'll employ AI-powered development tools and collaborate with ML engineers to integrate LLM and agentic capabilities into next-generation ad products. This is a high-impact opportunity to solve complex challenges, influence technical direction, and accelerate innovation in a fast-growing ad-tech environment.

Learn About Our Work:

eBay Advertising Insights: eBay Advertising
Promoted Listings on eBay: eBay Seller Center - Promoted Listings

Key Responsibilities:

Design and build innovative advertising and commerce features that help eBay sellers and advertisers grow their business.
Develop scalable, highly available applications, APIs, and services using technologies such as React, Node.js, Java, and Scala.
Own end-to-end delivery of complex features, from technical design and architecture through deployment and production support.
Drive technical decisions, system design, and cross-team collaboration to ensure scalable, reliable, and maintainable solutions.
Leverage AI-powered development tools and workflows to improve engineering productivity, code quality, testing, and deployment efficiency.
Partner with ML and AI teams to develop intelligent advertising capabilities, including recommendations, automation, and AI-driven campaign management.
Contribute to a culture of continuous learning, Agile development, open-source collaboration, and rapid software delivery.
Mentor team members, participate in technical discussions, and help shape engineering best practices across the organization.

Qualifications

BS in Computer Science or related field with 10+ years of experience, or MS with 7+ years.

Technical Requirements

Strong experience building modern web applications with React (or similar frameworks), HTML/CSS, and responsive design.
Proficiency in backend development with Node.js, Java (17+), and Spring Boot.
Experience designing and building scalable APIs, distributed systems, and high-traffic applications.
Strong knowledge of messaging technologies (Kafka, RabbitMQ), relational and NoSQL databases, and data modeling.

Architecture & Engineering

Proven system design expertise with distributed systems, including scalability, reliability, and performance trade-offs.
Experience leading end-to-end technical design, architecture reviews, and cross-functional engineering initiatives.
Strong foundation in computer science fundamentals, including data structures and algorithms.

Tools & Practices

Experience with CI/CD pipelines and modern development tools.
Familiarity with AI-assisted engineering tools and AI-driven automation workflows.

Additional Details

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 [email protected]. 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

You will lead the end-to-end development of scalable advertising solutions and integrate AI-driven capabilities into next-generation ad products. You will also collaborate with cross-functional teams to design robust system architectures and mentor engineering staff.

Requirements

Candidates must have a BS in Computer Science with 10+ years of experience or an MS with 7+ years. Strong proficiency in full-stack development, distributed systems, and modern web frameworks like React and Java is required.

Skills

React
Node.js
Java
Scala
System Design
Distributed Systems
Kafka
RabbitMQ
NoSQL
Data Modeling
CI/CD
API Development
Machine Learning
LLM
Cloud Architecture
Agile

Visa sponsorship

Not detected in the job text

Keywords

Full Stack Engineering
Ad-Tech
Ecommerce
React
Node.js
Java
Scala
Spring Boot
Kafka
RabbitMQ
NoSQL
Distributed Systems
System Design
Machine Learning
LLM
AI-powered development
CI/CD
Agile
API
Scalability
Data Modeling
Software Architecture
Responsive Design
Performance Optimization
Technical Leadership
Mentorship
Cloud Computing
Automation
Advertising Solutions
Engineering Productivity

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