Staff Engineer - MTS 2 (Integrations)

Socket.dev; Toronto; On-site; CAD 120,000 - 160,000; Full time

Job summary

eBay is building a new Toronto-based integration team and seeks a highly hands-on backend engineer who can define architecture, write production code, and drive execution across multiple stacks and geographies. You will lead technical direction for platform integrations, collaborating closely with engineering teams to deliver scalable services.

You will influence system design, maintainability, and best practices while operating in a fast-moving, ambiguous environment.

Qualifications

• Extensive backend experience with Java.
• Proven ability to lead technical architecture and make sound design decisions.
• Experience building or integrating distributed systems and service-based architectures.
• Strong communication and collaboration across teams.
• Comfort in ambiguity and forming a clear technical vision.

Responsibilities

• Lead the technical architecture for a marketplace integration team, from early concept through implementation.
• Write and ship production code; this role is heavily hands-on.
• Drive architectural discussions, design reviews, and PR reviews across integration workstreams.
• Translate ambiguous business goals into clear, scalable technical solutions.
• Partner with engineering teams to integrate services across platforms and tech stacks.
• Help define how eBay capabilities can be exposed as services for other platforms and future integrations.
• Influence engineering best practices around system design and maintainability.

Skills

Java

System architecture

Distributed systems

Backend engineering

Communication

Ambiguity handling

Tools

GraphQL

Scala

Kotlin

TypeScript

Node.js

AWS

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.

About the team

We're building a new integration team in Toronto focused on bringing core eBay capabilities into adjacent marketplace platforms. The team sits at the center of a strategic initiative to deliver marketplace capabilities such as identity, demand generation, payments, and shipping as reusable services, with the potential to expand across additional platforms over time.

Role overview

This is a highly hands-on technical leadership role for an experienced backend engineer who can define architecture, write production code, and drive execution in a fast-moving, ambiguous environment. You'll lead the technical direction for key platform integrations, partnering closely with engineering teams across multiple stacks and geographies while staying deeply involved in implementation.

Key competencies & responsibilities

• Lead the technical architecture for a marketplace integration team, from early concept through implementation
• Write and ship production code; this role is expected to be heavily hands-on
• Drive architectural discussions, design reviews, and PR reviews across integration workstreams
• Translate ambiguous business or product goals into clear, scalable technical solutions
• Partner closely with engineering teams to integrate services across distinct platforms and tech stacks
• Help define how eBay capabilities can be exposed as services for other platforms and future integrations
• Influence engineering best practices around system design, maintainability, and long-term scalability

Must-have requirements

• Strong hands-on backend engineering experience in Java
• Proven ability to lead technical architecture and make sound system design decisions
• Experience building or integrating distributed systems and service-based architectures
• Strong communication skills and the ability to collaborate effectively across teams
• Comfortable operating in ambiguity and forming a clear technical point of view with incomplete information
• Strong individual contributor mindset with a desire to grow as a technical leader rather than a people manager

Nice-to-have requirements

• Experience with GraphQL, especially federated graph architectures such as Apollo
• Experience with Scala, Kotlin, or other JVM languages
• TypeScript and/or Node.js experience
• AWS or other cloud infrastructure experience
• Familiarity with full-stack or web architecture
• Experience in startup, scale-up, or other high-ambiguity environments
• Experience in marketplace, commerce, or platform-as-a-service style companies

Why this role is interesting

• Greenfield team with meaningful architectural ownership
• High visibility work tied to eBay's broader platform integration strategy
• Exposure to multiple modern tech stacks across enterprise and cloud-native systems
• Strong growth potential as this pattern expands to additional platforms and future integrations
• Opportunity to join a growing Toronto engineering presence with significant local investment

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 [e-mail]. 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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