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Added 24 days ago
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Associate Principal Engineer - Snowflake AI Architect
Nagarro
Brampton, ON
- Full-time
Drive adoption of Snowpark (Python/Java/Scala) for advanced data engineering and ML workflows.
Added 1 month ago
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Senior Full Stack Engineer (Application + Data)
Article
Vancouver, BC
- $165,000 to $175,000 CAD / year
- Full-time
…challenging, meaningful problems. This is where you come in. As a Senior Software Engineer, Full Stack, you'll design, build, deploy, and operate software solutions across our entire…
Added 25 days ago
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Senior Software Engineer
Microsoft
Vancouver, BC
- Full-time
…highly competitive market sound exciting to you? If so, this Senior Software Engineer role with the Microsoft Turing team may be a great fit for…
Added 1 month ago
ZT
Software Engineer, Professional Senior (Android + NFC/RFID +AI )
Zebra Technologies
Mississauga, ON
- Full-time
The Engineering Customer Response Team (ECRT) is seeking a Senior Software Engineer to provide world-class technical support to global enterprise customers for the Android Operating System,…
Added 1 month ago
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Senior Java Developer, Applications Development – Assistant Vice President
Citi
Mississauga, ON
- Full-time
Citi is looking for a Senior Java Developer to join its Applications Development team, where you will design, build, and own high-performance Java applications that underpin critical…
Added 1 month ago
Senior Software Engineer
Clutch Technologies Inc.
Toronto, ON
Have experience with one or more modern programming languages such as TypeScript, Python, Go, Java, C#, Rust, or Ruby.
Added 29 days ago
Middle/Senior Forward Deployed Engineer (Python, AI)
Exadel
Canada
For the Senior Forward Deployed Engineer level, senior-level experience, including technical delivery leadership across multidisciplinary teams or pods.
Added 1 month ago
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Principal AI Engineer
PointClickCare
Mississauga, ON
- $191,700 to $213,000 CAD / year
- Full-time
PointClickCare is searching for a Principal AI Engineer who will lead and design AI systems across multiple SaaS solutions following our AI Design Patterns, defining technical standards and…
Added 29 days ago
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Full Stack Engineer - Senior Vice President
Citi
Mississauga, ON
- Full-time
Citi is hiring a Head of Application Development at the Senior Vice President level to lead enterprise-scale CRM and financial platform engineering within the Institutional Services Group…
Added 27 days ago
Senior Data Software Engineer
Scotiabank
Toronto, ON
As a Senior Software Engineer on Scotiabank’s Data & AI Technology team, you will lead the design, development and scaling of our enterprise data catalog and data management solutions…
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 29 days ago
Software Engineer II
Planview Incorporated
Vancouver, BC
We’re seeking an Intermediate Software Engineer to join our team in Vancouver, BC. In this role, working closely with our senior team members, you will design, implement, and test features…
Added 1 month ago
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Staff Engineer – Software Development, Architecture, Security & Governance
Royal Bank of Canada
Toronto, ON
- Full-time
We are seeking a highly skilled and experienced Staff Engineer to join our Enterprise Architecture team, leveraging their expertise in full-stack development, backend engineering, API…
Added 1 month ago
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Staff Engineer – Software Development, Architecture, Security & Governance
RBC
Toronto, ON
- Full-time
We are seeking a highly skilled and experienced Staff Engineer to join our Enterprise Architecture team, leveraging their expertise in full-stack development, backend engineering, API…
Added 1 month ago
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Data Engineer - Sports & Prediction Markets
Betstamp
Toronto, ON
- Full-time
You'll begin with scrapers and gradually take ownership across the stack. Architecture decisions, production incidents, and irreversible changes will be handled alongside a senior engineer.
Added 1 month ago
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Market Data Engineer - Prediction Markets & Odds Infrastructure
Betstamp
Toronto, ON
- Full-time
Architecture decisions, production incidents, and irreversible changes will be handled alongside a senior engineer.
Added 1 month ago
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Backend Engineer - Real-Time Sports Data (Go / ClickHouse / AI-Native)
Betstamp
Toronto, ON
- Full-time
You'll begin with scrapers and gradually take ownership across the stack. Architecture decisions, production incidents, and irreversible changes will be handled alongside a senior engineer.
Added 1 month ago
CI
Senior Software Engineer Real Assets, Alternative Investments Technology
CPP Investments | Investissements RPC
Toronto, ON
- Full-time
As a Senior Software Engineer, you will design, build, test and support technology solutions and products that enable business capabilities across CPP Investments. You will partner closely…
Added 1 month ago
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Senior Lead Software Engineer, Payment Systems - Vice President
Citi
Mississauga, ON
- Full-time
Citi's Core Payment Systems team is looking for a Senior Lead Software Engineer to architect and drive the modernization of global payment processing platforms that move USD 4 trillion in…
Added 1 month ago
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Principal AI Engineer
PointClickCare
Mississauga, ON
- Full-time
PointClickCare is searching for a Principal AI Engineer who will lead and design AI systems across multiple SaaS solutions following our AI Design Patterns, defining technical standards and…
Added 1 month ago
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Lead Software Engineer (Agentic AI & Full Stack) - Vice President
Citi
Mississauga, ON
- Full-time
Citi is looking for a Lead Software Engineer to architect and deliver next-generation Agentic AI applications at the intersection of full-stack engineering and large language model…
Added 1 month ago
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Senior Software Engineer, Frontend
Sardine
Remote, Canada
- $160,000 to $210,000 CAD / year
- Full-time
- Remote
As a frontend-focused Senior Software Engineer, you will own the design and delivery of the user-facing experiences at the heart of our AI products. Your primary focus is building polished,…
Added 1 month ago
GM
Staff Engineer, Site Reliability Engineering
General Motors
Markham, ON
- Full-time
We are seeking a Staff Engineer to help make GM’s data platforms reliable, observable, operable, and scalable. This is a senior technical leadership role for someone who can move…
Added 1 month ago
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Sr. Software Engineer, Backend/GraphQL
eBay
Toronto, ON
- Full-time
…high-quality API experiences. In this role, you will work closely with senior technology leaders, architects, and product owners to streamline product integration through Apollo GraphQL…
Added 1 month ago
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Senior Software Engineer- Big Data & Java
PointClickCare
Mississauga, ON
- $142,000 to $158,000 CAD / year
- Full-time
Experience in writing clean code that performs well at scale using languages such as Python, Java etc.

eBay

Sr. Software Engineer, Backend/GraphQL

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Posting language: English
Posted: Sep 1, 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.

Looking for a company that inspires passion, courage and creativity, where you can be on the team shaping the future of global commerce? Want to shape how millions of people buy, sell, connect, and share around the world? If you’re interested in joining a purpose driven community that is dedicated to crafting an ambitious and inclusive work environment, join eBay – a company you can be proud to be with.

About the team and the role:

As a member of our GraphQL champions community, you will help shape how eBay evolves its business and technology capabilities through scalable, high-quality API experiences. In this role, you will work closely with senior technology leaders, architects, and product owners to streamline product integration through Apollo GraphQL Federation and translate business use cases into clear, durable API contracts.

This is a highly impactful engineering role with ownership of critical production systems that support availability, throughput, and platform reliability at scale. You will influence schema design, query performance, security requirements, error handling, and client integration patterns while partnering across foundational platform teams. You will also help grow GraphQL knowledge across eBay by supporting product teams in migration efforts and championing adoption of best practices.

At eBay, we know diverse perspectives drive better outcomes, and we are committed to building an inclusive workplace where employees feel safe, supported, and able to bring their authentic selves to work. We also offer comprehensive benefits designed to support employees through different life stages, including parental leave, paid sabbatical, and programs that support financial well-being.

What you will accomplish:

Lead the design and implementation of federated GraphQL solutions using Node.js, Spring Boot, and DGS to improve how teams build and integrate APIs across eBay’s ecosystem.
Own and evolve highly critical production services, helping ensure strong availability, resilience, and throughput for customer- and business-facing experiences.
Partner with senior technology leaders, architects, product owners, and adjacent platform teams to turn business needs into scalable API contracts and unified architecture decisions.
Drive improvements in query performance, cost analysis, security, error handling, and client integration patterns to enable reliable and efficient GraphQL adoption.
Enable product teams on their GraphQL learning and migration journeys by providing technical guidance, reusable patterns, and best practices for federation and schema design.
Prototype and refine practical solutions in Node.js or Spring Boot, continuously improving engineering design, development processes, and platform standards as the ecosystem evolves.

What you will bring:

8+ years of software development experience building and supporting production applications or distributed systems at scale.
2+ years of hands-on experience with Node.js and/or Spring Boot, with the ability to design, build, and troubleshoot robust backend services.
Experience designing, documenting, and governing public APIs, with a strong focus on usability, consistency, and long-term maintainability.
Hands-on or transferable experience with GraphQL, including preferred experience with federated GraphQL and schema design; familiarity with Apollo Federation is a plus.
Working knowledge of Java and/or Kotlin, plus an understanding of service-oriented architecture, microservices, and modern engineering practices.
Strong collaboration and leadership skills, including the ability to influence across stakeholders, mentor less experienced team members, and work effectively with technologies such as TypeScript, Docker, and Kubernetes when needed.

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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.

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More about this job

Responsibilities

Lead the design and implementation of federated GraphQL solutions using Node.js and Spring Boot to improve API integration across the ecosystem. Own critical production services while partnering with architects and product owners to ensure high availability and performance.

Requirements

Requires 8+ years of software development experience with a focus on distributed systems and production applications. Candidates must have hands-on experience with Node.js, Spring Boot, and GraphQL, specifically with schema design and federation.

Skills

GraphQL
Apollo Federation
Node.js
Spring Boot
Java
Kotlin
TypeScript
Docker
Kubernetes
API Design
Microservices
Distributed Systems
Schema Design
Performance Optimization
System Architecture
Mentorship

Benefits

Parental leave
Paid sabbatical
Financial well-being programs

Visa sponsorship

Not detected in the job text

Keywords

GraphQL
Apollo Federation
Node.js
Spring Boot
DGS
Java
Kotlin
TypeScript
Docker
Kubernetes
Microservices
API Contracts
Distributed Systems
Schema Design
Performance Tuning
System Reliability
Software Engineering
Backend Development
E-commerce
Federated Architecture
API Governance
Cloud Native
Scalability
Error Handling
Technical Leadership
Mentoring
Platform Engineering
Service-Oriented Architecture
Production Support
API Integration

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