Backend Software Engineer

eBay•Toronto, ON

1d•CA$118,000 - CA$157,500

About The Position

The Seller Experience and Messaging organization within Selling Engineering builds the products and experiences that help business sellers successfully run and grow their businesses on eBay. This team focuses on the tools B2C and C2C sellers use every day to manage listings, orders, and the overall health of their selling business. Within this space, the Seller Hub Overview team owns the landing experience that gives sellers a daily health check of their business, highlights the most important tasks to address, and helps them prioritize what needs attention each day. 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. eBay hires innovators who can push boundaries and change the world. As a self-motivated and enthusiastic member of our team, you will work with extremely hardworking peers in a fun environment. You will work in an agile environment with a focus on problem solving and engineering excellence.

Requirements

Bachelor’s degree in Computer Science plus 3+ years of experience or MS in Computer Science plus 2+ years of hands-on experience in building large-scale distributed systems.
Excellent understanding of computer science fundamentals, data structures and algorithms.
Extensive hands-on experience and expertise in object-oriented design methodology and application development using Java/J2EE, SOLID Principles, Design Patterns, Spring/Spring Boot, and GraphQL.
Good understanding of using various database systems (NoSQL and relational) at scale.
Ensure code quality and maintainability by evolving architecture and tech stack, refactoring, standards and improving build and test systems.
Partner effectively and influence peers, juniors and seniors both within the organization and across eBay.
Experience building backend services using Java and Kotlin, with hands-on expertise in GraphQL
Experience using AI tools like Claude, Cursor, Cline etc.

Responsibilities

Build solutions using your strong background in distributed systems, and large scale database systems.
Research, analyze, design, develop and test the solutions that are appropriate for the business and technology strategies.
Participate in design discussions, code reviews, and project related team meetings.
Work with other engineers, Architects, Product Management, and Operations teams to develop innovative solutions that meet business needs with respect to functionality, performance, scalability, reliability, realistic implementation schedules and consistency to development principles and product goals.
Develop technical & domain expertise and apply to solving product challenges.
Define, design, and implement complex, multi-tier distributed software systems scaling beyond 1B requests/day and focused on improving user experience at eBay.
Estimate engineering effort, plan execution cycles, and rollout system changes
Share engineering support, release, and on-call responsibilities for an always-on 24x7 site.