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. About the team and the role: TCGplayer connects hobbyists and hobby businesses to communities. We relentlessly improve the exchange of things and thoughts that fuel passions, providing the most compelling destination and tools for collectible card game enthusiasts and professional sellers! TCGplayer, now a part of eBay, promotes and drives growth of our products and services by connecting a global community of millions of buyers with tens of thousands of retailers in a $25B global collectible hobby market. As a Software Engineer III, you will help design, build, and maintain the systems that power TCGplayer's Customer Experience (CX) platform. Your work will enable our CX agents to efficiently support both Buyers and Sellers across every aspect of TCGplayer's business. You will uplift legacy applications into a microservice-based architecture, integrate with internal systems of record and third-party ticketing and AI systems, and collaborate closely with other development teams to deliver a cohesive and intuitive customer support experience. This is a remote position. What you will accomplish: - Design and develop features for a best-in-class Customer Experience Platform used by our in-house CX agents. - Build services and interfaces that surface relevant customer data and enable administrative actions on behalf of Buyers, Sellers, and internal business partners. - Integrate the platform with internal systems of record, as well as third-party ticketing and AI systems. - Collaborate with engineers across teams to manage dependencies and deliver high-quality software on time. - Partner with Cloud Platform & Site Reliability Engineering to ensure the platform is secure, reliable, and performant. - Identify opportunities to consolidate redundant technologies and applications, contributing to a stable foundation for future growth. What you will bring: - A minimum of 5+ years of software development experience on large-scale, high-volume systems in a microservice-based architecture. - Strong proficiency in C#. Candidates with strong Java experience and a willingness to transition to C# are also encouraged to apply. - Experience with AWS or comparable cloud infrastructure. - Full-stack development experience, comfortable working across backend services and user-facing interfaces. - Bachelor's degree (or equivalent work experience) in computer science, information technology, or a related field. - Excellent communication skills with both technical and non-technical stakeholders. 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 talent@ebay.com. 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.

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. About the team and the role: TCGplayer connects hobbyists and hobby businesses to communities. We relentlessly improve the exchange of things and thoughts that fuel passions, providing the most compelling destination and tools for collectible card game enthusiasts and professional sellers! TCGplayer, now a part of eBay, promotes and drives growth of our products and services by connecting a global community of millions of buyers with tens of thousands of retailers in a $25B global collectible hobby market. As a Software Engineer III, you will help design, build, and maintain the systems that power TCGplayer's Customer Experience (CX) platform. Your work will enable our CX agents to efficiently support both Buyers and Sellers across every aspect of TCGplayer's business. You will uplift legacy applications into a microservice-based architecture, integrate with internal systems of record and third-party ticketing and AI systems, and collaborate closely with other development teams to deliver a cohesive and intuitive customer support experience. This is a remote position. What you will accomplish: - Design and develop features for a best-in-class Customer Experience Platform used by our in-house CX agents. - Build services and interfaces that surface relevant customer data and enable administrative actions on behalf of Buyers, Sellers, and internal business partners. - Integrate the platform with internal systems of record, as well as third-party ticketing and AI systems. - Collaborate with engineers across teams to manage dependencies and deliver high-quality software on time. - Partner with Cloud Platform & Site Reliability Engineering to ensure the platform is secure, reliable, and performant. - Identify opportunities to consolidate redundant technologies and applications, contributing to a stable foundation for future growth. What you will bring: - A minimum of 5+ years of software development experience on large-scale, high-volume systems in a microservice-based architecture. - Strong proficiency in C#. Candidates with strong Java experience and a willingness to transition to C# are also encouraged to apply. - Experience with AWS or comparable cloud infrastructure. - Full-stack development experience, comfortable working across backend services and user-facing interfaces. - Bachelor's degree (or equivalent work experience) in computer science, information technology, or a related field. - Excellent communication skills with both technical and non-technical stakeholders. 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 talent@ebay.com. 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.

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. About the team and the role: TCGplayer connects hobbyists and hobby businesses to communities. We relentlessly improve the exchange of things and thoughts that fuel passions, providing the most compelling destination and tools for collectible card game enthusiasts and professional sellers! TCGplayer, now a part of eBay, promotes and drives growth of our products and services by connecting a global community of millions of buyers with tens of thousands of retailers in a $25B global collectible hobby market. As a Software Engineer III, you will help design, build, and maintain the systems that power TCGplayer's Customer Experience (CX) platform. Your work will enable our CX agents to efficiently support both Buyers and Sellers across every aspect of TCGplayer's business. You will uplift legacy applications into a microservice-based architecture, integrate with internal systems of record and third-party ticketing and AI systems, and collaborate closely with other development teams to deliver a cohesive and intuitive customer support experience. This is a remote position. What you will accomplish: - Design and develop features for a best-in-class Customer Experience Platform used by our in-house CX agents. - Build services and interfaces that surface relevant customer data and enable administrative actions on behalf of Buyers, Sellers, and internal business partners. - Integrate the platform with internal systems of record, as well as third-party ticketing and AI systems. - Collaborate with engineers across teams to manage dependencies and deliver high-quality software on time. - Partner with Cloud Platform & Site Reliability Engineering to ensure the platform is secure, reliable, and performant. - Identify opportunities to consolidate redundant technologies and applications, contributing to a stable foundation for future growth. What you will bring: - A minimum of 5+ years of software development experience on large-scale, high-volume systems in a microservice-based architecture. - Strong proficiency in C#. Candidates with strong Java experience and a willingness to transition to C# are also encouraged to apply. - Experience with AWS or comparable cloud infrastructure. - Full-stack development experience, comfortable working across backend services and user-facing interfaces. - Bachelor's degree (or equivalent work experience) in computer science, information technology, or a related field. - Excellent communication skills with both technical and non-technical stakeholders. 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 talent@ebay.com. 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.

• Design and implement scalable infrastructure for LLM and GenAI workloads across multi-GPU environments • Perform GPU profiling, benchmarking, and performance optimization for distributed training workloads • Manage and schedule compute-intensive jobs using Slurm-based clusters and OpenShift/Kubernetes environments • Enable and optimize the NVIDIA GPU stack (CUDA, cuDNN, NCCL, Triton, RAPIDS, etc.) • Collaborate with cross-functional teams to deploy models in research and production environments • Build and support GenAI pipelines (fine-tuning, RAG, multi-modal inferencing, LLMOps) • Develop reusable infrastructure templates using tools like Terraform and Helm • Contribute to internal innovation (PoCs, workshops) and support client-facing delivery engagements