MTS 1, Software Engineer - Backend

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. Join eBay’s Advertising and Marketing Technology teams to build the platforms, services, and user experiences that help sellers grow their business and make eBay the destination website for existing and new customers. You’ll work on high-scale systems spanning frontend applications, backend services, APIs, data pipelines, and AI-assisted engineering workflows, partnering closely with product, design, analytics, and applied science. We’re looking for engineers who can turn business problems into reliable, maintainable software, make sound technical tradeoffs, and take ownership from design through production. This role is a strong fit for someone who enjoys solving practical engineering problems in a fast-moving environment where performance, quality, and measurable customer impact matter. Job Responsibilities: Design and build innovative advertising, marketing platform features that help eBay sellers, advertisers grow their business and help eBay become the dominant eCommerce platform. Develop scalable, highly available applications, APIs, and services using technologies such as Marko, React, Node.js, Java, and Scala. Own end-to-end delivery of complex features, from technical design and architecture through deployment and production support. Drive technical decisions, system design, and cross-team collaboration to ensure scalable, reliable, and maintainable solutions. Leverage AI-assisted development tools (e.g., GitHub Copilot, Claude Code) throughout the development lifecycle for coding, debugging, testing, and code review to increase engineering velocity. Contribute to AI-powered advertising and marketing features by collaborating with ML engineers on LLM integrations, recommendation systems, and intelligent campaign optimization. Contribute to a culture of continuous learning, Agile development, open-source collaboration, and rapid software delivery. Mentor team members, participate in technical discussions, and help shape engineering best practices across the organization. Job Requirements: BS/BA in Computer Science or related field plus 7 years work experience or MS with 6 years of relevant experience. Strong experience in building modern web applications at scale with React (or similar frameworks), HTML/CSS, RESTful APIs and responsive design. Experience with relational (Oracle/Postgres/MySQL) and/or NoSQL (Cassandra/MongoDB) databases, including schema design and query optimization. Proven ability to own end-to-end system design: writing technical design documents, leading design reviews, and making architectural decisions for multi-service features. Experience designing scalable distributed systems with a track record of evaluating trade-offs (consistency, availability, latency, cost) and driving technical alignment across teams. Experience with AI-assisted development practices and tools to increase engineering productivity (e.g., GitHub Copilot, Cursor, Claude Code, or equivalent). Experience building or integrating LLM-powered features, agentic workflows, or AI-driven automation in production systems is a plus. Strong ownership mentality with ability to drive work end-to-end in a collaborative environment. Exposure to GraphQL and experience in building Federated GraphQL APIs is highly desirable. Experience on contributing to open-source is a plus. Benefits are an essential part of your total compensation for the work you do every day. Whether you’re single, in a growing family, or nearing retirement, eBay offers a variety of comprehensive and competitive benefit programs to meet your needs. Including maternal & paternal leave, paid sabbatical, and plans to help ensure your financial security today and in the years ahead because we know feeling financially secure during your working years and through retirement is important. Here at eBay, we love creating opportunities for others by connecting people from widely diverse backgrounds, perspectives, and geographies. So, being diverse and inclusive isn’t just something we strive for, it is who we are, and part of what we do each and every single day. We want to ensure that as an employee, you feel eBay is a place where, no matter who you are, you feel safe, included, and that you have the opportunity to bring your unique self to work. To learn about eBay’s Diversity & Inclusion click here: We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation. Additional Details 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, veteran status, 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 for people with disabilities. We use cookies to enhance your experience and may use AI tools for administrative tasks in the hiring process. To learn how we handle your personal data and use AI responsibly, please visit our Talent Privacy Notice , Privacy Center , and AI Hiring Guidelines .