At eBay were more than a global ecommerce leader were changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. Were 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. Were 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

Join eBays Ad-Tech Innovation Team!

eBay is on a mission to revolutionize the advertising landscape with state-of-the-art ad-tech solutions. We aim to optimize ad monetization and enhance user experiences creating value for both buyers and sellers. By driving performance through innovative Ads were rapidly innovating in the ad-tech space. Were seeking a motivated Full Stack Engineer who is excited about tackling new challenges and is passionate about technology.

Learn About Our Work:

• eBay Advertising Insights: eBay Advertising

• Promoted Listings on eBay: eBay Seller Center - Promoted Listings

Your Impact: As a Senior Full Stack Engineer you will own end-to-end delivery across the full stack from immersive frontend experiences to robust backend services and data pipelines. You will leverage AI throughout the development lifecycle and help establish best practices for AI-assisted engineering across the team. You will also contribute to building AI-powered advertising features working with ML engineers to integrate LLM and agentic capabilities into eBays ad products.

Key Responsibilities:

• Design and implement innovative features for eBay sellers and advertisers to showcase their products and manage their advertising campaigns effectively.

• Develop and maintain scalable highly available user-facing applications and RESTful APIs.

• Own end-to-end system design for complex multi-service features from technical design documents through implementation rollout and production monitoring

• Lead architectural decisions across team boundaries defining APIs data models and cross-service integration patterns that accommodate future scale

• Design systems that evaluate trade-offs across reliability performance cost and operational complexity; drive cross-team technical alignment on shared infrastructure and platform improvements

• Utilize HTML/CSS React Java and Scala in system development

• Leverage AI-assisted development tools and agentic workflows throughout the engineering lifecycle from code generation and debugging to automated PR reviews test creation and CI/CD optimization

• Champion AI-augmented engineering practices across the team driving adoption of tools like GitHub Copilot Claude Code and internal AI platforms to accelerate development velocity

• Contribute to building AI-powered advertising features by collaborating with ML engineers on LLM integrations recommendation systems and intelligent campaign management capabilities

• Learn and apply new technologies as needed both from external sources and eBays internal tech stack.

• Participate in our internal open source community to share and collaborate on projects and codebases.

• Commit to a continuous integration and deployment pipeline ensuring smooth and quick releases.

• Work within a multi-disciplinary Agile team to deliver incremental value to our customers swiftly.

• Engage in technical discussions contribute to decision-making processes and share expertise with your colleagues.

Job Requirements:

Basic Qualifications

• BS/BA in Computer Science or related field with 5 years of experience or MS with 3 years
  

Frontend

• Strong HTML5/CSS3 and responsive web fundamentals

• Experience with React (preferred) or equivalent modern framework (hooks state management)

Backend

• (BFF/API layer Express Fastify or similar)

• Java 17 with Spring Boot

• Experience building scalable RESTful APIs and production web applications

• Message queues (Kafka RabbitMQ or similar)

• Relational (Oracle/Postgres/MySQL) and NoSQL (Cassandra/MongoDB) databases schema design and query optimization

System Design & Core Skills

• Strong system design experience for distributed high-traffic systems with a track record of evaluating trade-offs (consistency availability latency cost) and driving technical alignment across teams

• Ability to lead end-to-end design (technical docs design reviews architecture decisions)

• Solid computer science fundamentals (data structures algorithms)

Other / Tools & Practices

• Experience with CI/CD tools (Jenkins GitHub Actions)

• Experience with AI-assisted development tools (e.g. Copilot Cursor)

• Ability to build LLM workflows or AI-driven automation

Nice-to-Haves

• Scala

• Exposure to GraphQL and experience in building Federated GraphQL APIs is highly desirable.

• Experience building or integrating LLM-powered features agentic workflows or AI-driven automation in production systems is a plus

• Showcasing contributions to open source private GitHub repositories side projects etc. is advantageous.

Be Part of Our Vision: At eBay we foster an environment where innovation collaboration and problem-solving thrive. If youre eager to contribute to the next generation of ad-tech solutions and have the skills were looking for especially your experience with GraphQL we encourage you to apply. Share your GitHub profile and any relevant project work to demonstrate your capabilities.

Additional Details

The base pay range for this position is expected in the range below:

Base pay offered may vary depending on multiple individualized factors including location skills and experience. The total compensation package for this position may also include other elements including a target bonus and restricted stock units (as applicable) in addition to a full range of medical financial and/or other benefits (including RRSP eligibility various paid time off benefits such as PTO and parental leave). Details of participation in these benefit plans will be provided if an employee receives an offer of employment.

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 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 eBays commitment to ensuring digital accessibility.

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