T25 Staff Java Engineer

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.

Team Overview
Join the Marketing Technologies Platform Team that powers billions of communications per day sent to customers across the world. This team plays a pivotal role in delivering personalized and timely customer engagement experiences across eBay's global user base.

Role Overview
We are seeking a highly skilled and motivated Staff Java Services Engineer to join our dynamic engineering team. In this role, you will be responsible for designing, developing, and maintaining scalable, high-performance, and resilient backend services using Java and related technologies. You will work closely with product managers, architects, and other engineers to deliver cutting-edge solutions that power our core applications. This position requires a strong understanding of microservices architecture, cloud platforms, and best practices in software development.

Key Responsibilities

• Design & Development: Design, develop, test, deploy, and maintain robust, scalable, and high-performance Java-based microservices and APIs.
• System Architecture: Contribute to the architectural design and evolution of our backend systems, ensuring scalability, reliability, and security.
• Code Quality: Write clean, well-documented, and efficient code following best practices, including test-driven development (TDD) and continuous integration/continuous delivery (CI/CD).
• Troubleshooting & Support: Diagnose and resolve complex technical issues, performance bottlenecks, and production incidents.
• Collaboration: Work collaboratively with cross-functional teams (frontend, DevOps, QA, product) to define requirements, deliver features, and ensure seamless integration.
• Performance Optimization: Identify and implement performance improvements and optimizations for existing services and new development.
• Mentorship: Potentially mentor junior engineers and participate in code reviews to ensure code quality and knowledge sharing.
• Innovation: Stay up-to-date with emerging technologies and industry trends, evaluating and recommending new tools and practices to improve our development process and product.

Qualifications
Required:

• Education: Bachelor's/Master's degree in Computer Science, Software Engineering, or a related technical field, or equivalent practical experience.
• Experience: 12+ years of professional experience in backend software development with a strong focus on Java with a Bachelor's degree, or 10+ years with a Master's degree.
• Core Java: Strong proficiency in Java, including Java 8+ features, concurrency, and object-oriented design principles.
• Frameworks: Hands-on experience with Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security).
• Microservices: Solid understanding and practical experience with microservices architecture, RESTful APIs, and inter-service communication patterns.
• AI Assisted Code Generation: Familiarity with foundational AI concepts and practical experience applying AI-powered coding generation (e.g., OpenAI Codex, GitHub Copilot, Anthropic Claude, Cursor, Windsurf or understanding of transformer-based code generation) will be a significant asset.
• Generative AI and Large Language Models: Understanding of large language models, prompt engineering, retrieval augmentation generation, Model Context Protocol is highly desirable.
• Databases: Experience with relational databases (e.g., PostgreSQL, Oracle, MySQL) and NoSQL databases (e.g., MongoDB, Cassandra, Redis).
• Cloud Platforms: Familiarity with cloud platforms (e.g., AWS, Azure, GCP) and containerization technologies (Docker, Kubernetes).
• Testing: Experience with unit testing, integration testing, and mocking frameworks (e.g., JUnit, Mockito).
• Tools: Proficiency with version control systems (Git) and build tools (Maven or Gradle).
• Problem Solving: Excellent analytical, problem-solving, and debugging skills.
• Communication: Strong verbal and written communication skills.

Preferred

• Experience with message queues/brokers (e.g., Kafka, RabbitMQ, SQS).
• Knowledge of CI/CD pipelines and tools (e.g., Jenkins, GitLab CI, GitHub Actions).
• Familiarity with monitoring and logging tools (e.g., Prometheus, Grafana, ELK stack, Splunk).
• Experience with performance tuning and optimization of Java applications.
• Understanding of security best practices in application development.
• Experience with Agile/Scrum development methodologies.

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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.

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