Sr. MTS, Software Engineer - Toronto - eBay

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 And Role

We are seeking a dedicated, creative, and passionate Senior MTS Software Engineer and Technical Lead to join our Seller Experience Listing Tool and Service team.

In this pivotal role, you will lead, architect, design, and develop innovative, highly performant, and available software across various device form factors. Your work will directly empower millions of business sellers globally to onboard, manage inventory & listings, and grow their businesses on the largest global marketplace. Performance, reliability, scalability, and accuracy are paramount, as this area is at the absolute top of the funnel for eBay's massive e-commerce ecosystem, collectively generating billions in quarterly revenue.

What You Will Accomplish

• Independently lead sophisticated, high-impact initiatives within eBay's selling inventory management domain, from conception to successful production rollout.
• Architect, design, and develop cross-data center distributed, fault-tolerant, highly available, and performant web services and applications with expert software architecture design, OOA/D skills, and outstanding analytical and problem-solving abilities.
• Championing excellence by promoting clean architecture, modern frameworks, quality gates, and alignment to design patterns and coding standards.
• Elevate the engineering bar through meticulous design/code reviews, operational excellence (SLOs, observability, incident management), and scalable practices that enhance team velocity.
• Act as a technical mentor, guiding senior and junior engineers on architecture standard methodologies and advanced problem-solving and introduce AI-first frameworks and reusable components to reduce developer friction and enable faster iteration.
• Automate diagnostics, monitoring, and remediation using intelligent assistants and prediction-based alerting.
• Lead by example: write reference implementations, contribute to core libraries and services, and conduct in-depth code reviews to influence standards and uplift team capabilities.
• Develop well-structured Architecture Decision Records (ADRs) and contribute to user documentation and standards.
• Estimate engineering effort, plan implementation, and manage system changes. Proactively identify and recommend mitigation strategies for project technical risks.

What You Will Bring

• Prefer a BSCS, MSCS, or a similar technical degree with 14+ years of experience in crafting and developing highly scalable distributed platforms, internet-scale web applications, 4+ years as a staff/architect-level technical lead across multiple domains.
• Expert, hands-on experience in Java, Spring Framework, GraphQL Service and schema design, Design Patterns, OOA/D, Data Structures, REST, JSON, and Internet Protocols, any experience in Federated GraphQL schema design and implementation is a significant plus.
• Proficiency in Java and/or Scala, with a strong foundation in data structures, algorithms, multithreading, synchronization, and concurrent programming. Deep architectural understanding of system design and a proven ability to lead projects to completion.
• Solid knowledge and experience with relational databases (Oracle) and/or NoSQL data technologies (Mongo, Cassandra, Couchbase), ElasticSearch, and related toolsets.
• Strong collaboration skills, with the ability to influence multi-functional and cross-geography teams to deliver results. Excellent time management skills and ability to work on concurrent assignments with different priorities.
• Demonstrated experience driving architecture discussions, producing well-documented design documents, participating in design and code reviews, and contributing to coding and unit testing of fault-tolerant applications.
• Solid understanding of computer science fundamentals, data structures, and algorithms, coupled with up-to-date knowledge in advancements in Web technologies and a drive for innovation.
• Proven ability to mentor senior engineers, influence organization-wide practices, and make long-term architectural decisions that unlock measurable business outcomes.

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 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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