Sr. Software Engineer, Backend/GraphQL at eBay in Toronto, Ontario, CA

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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