MTS 2, Staff Software Engineer

eBay Inc.; Toronto; On-site; CAD 120,000 - 160,000; Full time

Job summary

A global ecommerce leader is seeking a Staff Engineer to design and operate agent-based systems utilizing composable skills. The role requires 10+ years of software development experience, strong capabilities in system architecture, and hands-on with Node JS, Java, and Scala. Responsibilities include building AI workflows and operating event pipelines using Kafka. This role offers a collaborative environment that promotes creativity and innovative thinking.

Qualifications

• 10+ years of work experience in software development or 8+ years with a Master's.
• Solid foundation in system architecture and software design.
• Experience with frameworks such as Spring MVC and building RESTful applications.

Responsibilities

• Architect agent-based systems and design composable skills.
• Build AI workflows and operate event pipelines using Kafka.
• Ship services and APIs exposing REST/GraphQL endpoints.

Skills

Software design

Distributed systems

Node JS

Java

Scala

RESTful applications

Data structures and algorithms

OOP

Functional programming

Kafka

Education

BS/BA in Computer Science or related field

Tools

Oracle

NoSQL

Kubernetes

Spring MVC

Marko

React

JavaScript

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.

We are looking for a dynamic, collaborative, and curious Staff Engineer to design, build and operate agent-based systems where agents use composable skills to accomplish end-to-end tasks. You will define AI workflows (planning, tool-use, memory, evaluation, governance), ship production services and APIs, and mentor teams to deliver reliable AI outcomes at global marketplace scale.

What you will do:

• Architect agentic systems: plan/execute loops with explicit state; design composable skills; ground with memory and citations.
• Build AI workflows: orchestrate task DAGs/state machines with retries, DLQ, idempotency, and SLAs.
• Operate event pipelines: stream on Kafka with backpressure, observability, and failure recovery.
• Ship services/APIs: expose REST/GraphQL endpoints for orchestration, inference, enrichment, and evaluation.
• Implement RAG: index, retrieve, rank, and cite with policy guardrails and prompt hardening.
• Evaluate/govern: offline/online evals, A/B/canary rollouts, audit trails, versioning, and risk classes.
• Integrate stacks: backend (Node/Java/Scala/C++), web (Marko/React/TS), data (Oracle/NoSQL), platform (Kubernetes).
• Mentor and OSS: share libraries/patterns; elevate reliability, safety, and engineering quality.

What you will bring:

• BS/BA in Computer Science or related field 10 plus years work experience or MS with 8 plus experience.
• Experience on software design and development experience, solid foundation in computer science with strong proficiencies in system architecture, distributed systems, data structures, algorithms, OOPs, OOA/D and Functional programming.
• Experience with Node JS, Javascript, Java, Scala, Oracle/NOSQL DBs.
• Experience building web and RESTful applications.
• Experience working with frameworks such as Spring MVC.
• Knowledge of core CS concepts such as common data structures and algorithms.
• Strong applied experience. You've built, broken, and rebuilt software applications.
• Creative thinker who knows how to create real-world products.
• Code samples from private GitHub repos, side projects, and open source project contributions is a plus.
• Excellent decision-making, communication, collaboration, presentation, interpersonal and analytical skills.

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.