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.
Looking for a place where you can build tools and systems that help eBay deeply understand customer needs and behaviors at scale? Join eBay’s Research Technology team and help shape the platforms, dashboards, and customer management systems that power insights and decision‑making for researchers, designers, and product partners across the company.
We’re seeking a Full Stack Engineer (L24) to design and build end‑to‑end web applications, APIs, and integrations that support research dashboards, customer management workflows, and internal tooling. In this role, you’ll work across React, Node.js, and Java services, connecting to third‑party APIs and existing internal systems to deliver reliable, production‑ready capabilities. This is an individual contributor role where you’ll own features from design through deployment and monitoring.
What you’ll do
Design, implement, and ship full‑stack features across React front‑ends, Node.js services, and Java back‑end components, with an emphasis on performance, reliability, and maintainability.
Design and evolve RESTful APIs and service contracts, including resource modeling, error handling, and versioning, in partnership with other engineering teams.
Integrate with third‑party APIs and internal platforms, handling auth flows, rate limits, and failure modes gracefully.
Build and maintain dashboards, internal tools, and lightweight customer management systems and configuration tools that give researchers and partner teams powerful, safe controls over customer records, cohorts, and workflows.
Work effectively within and around existing infrastructure, finding pragmatic solutions and designing extensions that respect current constraints while moving the system forward.
Read, understand, and refactor existing codebases, improving structure, test coverage, and observability as you go.
Take ownership of the full lifecycle of your work: technical design, implementation, automated testing, code review, deployment, monitoring, and incident follow‑up.
Collaborate closely with design, product, research, and other engineering partners to shape requirements, clarify trade‑offs, and deliver high‑quality user and developer experiences.
Contribute to internal standards and best practices for full‑stack development, API design, and tooling, helping the team move faster and more safely over time.
Minimum qualifications
4–7 years of professional software engineering experience, including significant full‑stack work on production systems.
Strong proficiency with React (or a comparable modern front‑end framework) building modular, component‑based UIs backed by robust state management and testing.
Hands‑on experience building Node.js services (TypeScript or JavaScript), including Express‑style HTTP servers, middlewares, and integrations with downstream services.
Solid Java programming skills and experience working within existing Java services or microservices (e.g., Spring or similar frameworks).
Demonstrated experience designing and implementing RESTful APIs, including data modeling, authentication/authorization, and API documentation.
Experience integrating with third‑party APIs (REST/JSON or similar), including handling retries, backoff, error classification, and observability.
Comfortable working in and improving existing codebases—including reading unfamiliar code, debugging complex issues, and incrementally refactoring without breaking behavior.
Familiarity with building dashboards, internal tools, or…
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