Ebay Principal Software Engineer Backend 

Canada, Ontario, Toronto 

250053486

We own (Item Page, Transactions such Best Offers and Auctions) and help deliver innovations for our Focus Categories like (Trading Cards, Comics, Toys), and Parts & Accessories .

As a
Principal Engineer you will serve as a senior technical leader, responsible for setting the strategic direction of our backend systems and platforms.

You will work across teams and domains to solve the most complex technical challenges, influence long-term technical decisions, and create scalable solutions that support the company’s growth.

Your leadership and technical expertise will drive innovation in platform architecture, system design, and engineering practices for multiple categories of products on e-commerce platform.

• Leading architecture vision and solving problems that span domains and systems

• Up-level technical community and foster a culture to drive engineering efficiency, velocity, quality and innovation.

• Influence and drive cross domain initiatives with senior technical leaders for architecture alignment, module reuse, performance, data consistency, and high availability.

• Getting into the details, investigating issues, writing code, performing code reviews, and prototyping new solutions

• Modernizing and advocating for continuous improvement of the technology stack when applicable by driving change through the organization

• Shepherding and collaborating effectively with product, design and engineering teams across multiple domains and multiple geographies

• Growing your team through coaching, mentoring

• 15+ years of experience in software engineering, with a focus on large-scale, distributed backend systems.

• Master's degree in Computer Science, or Bachelor's degree with equivalent experience

• Proven experience designing and architecting complex systems at massive scale, ideally within e-commerce or other high-traffic environments.

• Expertise in distributed systems, microservices, event-driven architectures

• Deep understanding of high-performance databases (SQL, NoSQL), caching strategies, and data replication techniques.

• Solid understanding of scalability and performance tuning, for high-volume, critical applications.

• Experience working with Java, Kotlin, and deep familiarity with system-level design principles.

• Track record of leading multi-functional projects, aligning teams around complex technical initiatives that impact the entire company.

• Demonstrated ability to mentor engineers at all levels, provide strategic technical leadership, and influence organizational direction.

• Exceptional problem-solving skills, with a focus on innovation, scalability, and performance optimization.

• Strong communication and leadership skills, with the ability to collaborate with both technical and non-technical partners at all levels of the organization.

• Experience with Agile/Scrum methodologies

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