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Added 28 days ago
A
Senior Software Developer
Autodesk
Toronto, ON · AMER - Canada - Ontario - Toronto - University Ave
- Full-time
We are looking for a Senior Software Developer to help build the backend platform that powers these experiences. In this role, you will design and develop REST APIs, implement a flexible…
Added 27 days ago
Software Engineer in Test, LUS
Lyft
Montreal, QC
2+ years of engineering experience as an automated test developer or other relevant work experience
Added 28 days ago
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CitiDirect Senior Java Dev for Payments Modernization – Vice President
Citi
Mississauga, ON
- Full-time
We are seeking an experienced Senior Java Backend Developer to join a group modernizing CitiDirect’s Payment architecture. The ideal candidate will have a strong foundation in Core Java and…
Added 28 days ago
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Senior Software Developer (Data & Backend Development)
Autodesk
Toronto, ON · Montreal, QC · AMER - Canada - Ontario - Toronto - University Ave
- Full-time
26WD100339, Senior Software Developer (Data & Backend Development)
Added 27 days ago
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Forward Deployed Solution Engineer – Applied AI FDE
ServiceNow
Montreal, QC
- Full-time
Added 27 days ago
Business Systems Engineer, Intelligent Automation
Lyft
Toronto, ON
Design and manage secure API endpoints (REST/SOAP) and SFTP connections; build ETL/data-sync pipelines across formats (JSON, XML, CSV, EDI).
Added 28 days ago
AI
Guidewire Lead Developer
Avanciers Inc.
Toronto, ON
- Contract
Avanciers is seeking a highly skilled Senior Guidewire PolicyCenter Developer to join our team for an exciting Long-Term Contract role with one of our esteemed Fortune 500 clients, based in…
Added 28 days ago
UC
Technical Lead
UniSysTech Consulting
Toronto, ON · Greater Toronto Area, Canada
- Contract
Strong technical knowledge of API platforms, event-driven architecture, cloud platforms, enterprise integration, or distributed systems is essential.
Added 28 days ago
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Senior Director, Platform
Miovision
Remote, Canada
- Full-time
- Remote
…ambitious infrastructure project yet. We are building a governed, API-first technology platform that will act as the ultimate express lane for how we build software, enabling new…
Added 28 days ago
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Software Engineer III
TD
Toronto, ON
- Full-time
Application design and development activities. Hands-on experience with Java/Springboot applications.
Added 5 months ago
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Senior React Native Developer
Ndax
Calgary, Alberta
- Full-time
We are looking for a Senior React Developer to produce scalable software solutions. You'll be part of a cross-functional team that's responsible for the full software development life…
Added 2 months ago
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Senior Full Stack Engineer, App Runtime
Snowflake
Toronto, Ontario
- $245,250 to $295,250 CAD / year
- Full-time
Deep understanding of modern web application architecture (e.g. React, NextJS), good API design patterns, security, performance and scale; proficiency in TypeScript/JavaScript, ideally also…
Added 2 months ago
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Senior Software Engineer - Streaming AI (Remote - Ontario / British Columbia)
Confluent
Remote, Canada
- $144,200 to $169,400 CAD / year
- Full-time
- Remote
…do it. We own our products end to end, from the user-facing API down to the serving layer that runs inference in production, and we work closely with the broader platform teams whose…
Added 2 months ago
OF
QA Automation Engineer
OTT Financial Group
Toronto, Ontario
- Full-time
Design, develop, and maintain automated test scripts for web, mobile, API, and backend systems.
Added 28 days ago
S
Java Backend Developer
Synechron
Calgary, AB
- $85,000 to $95,000 CAD / year
- Full-time
We are seeking a highly motivated Java Backend Developer, the ideal candidate will have strong experience in Java, Spring Boot, RESTful APIs, microservices, cloud platforms, databases, and…
Added 5 months ago
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Senior Android Developer
UST
Toronto, Ontario
- Full-time
UST is looking for a Senior Android Developer to join our client project, one of the largest financial institutions. You will have the opportunity to continue to modernize and improve one…
Added 5 months ago
U
Senior Android Developer
UST
Toronto, Ontario
- Full-time
UST is looking for a Senior Android developer to join our client project, one of the largest financial institutions. You will have the opportunity to continue to modernize and improve one…
Added 5 months ago
S
MuleSoft Technical Architect- Enterprise
Slalom
Toronto, Ontario · Greater Toronto Area, Canada
- Full-time
…knowledge of MuleSoft (Anypoint Studio, DataWeave, Design Center, API Manager, Exchange,…
Added 5 months ago
O
Développeur en tests logiciels - Software Developer in Test
OneSpan
Montreal, Quebec
- Full-time
Qualité développement : concevoir, développer et maintenir des cadres de test automatisés robustes pour les tests fonctionnels, de régression, de performance et d'API.
Added 29 days ago
OT
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
PC
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
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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 28 days ago
KT
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 29 days ago
E
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 28 days ago
DI
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

eBay

Lead Full Stack Engineer

Toronto, ON, Canada

Full-time

Apply About employer

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Job details

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

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 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

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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