Mid LLM Engineer

About this role

Requirements

• Strong research foundation in NLP, LLMs, neural architectures, and modern training/fine-tuning methodologies
• Team-work attitude with a clear technical communication mindset and the ability to work independently on well-scoped problems
• Hands-on coding skills with proven experience in implementing, evaluating, and scaling machine learning models
• Data-based problem-solving skills, specifically the ability to translate complex technical work into business impact and quantifiable results
• Analytical thinking and a structured approach to solving research challenges
• Fluency in English, as you will be an integral part of an international, English-speaking environment

Responsibilities

• Bridge cutting-edge research and real-world applications by designing and implementing modern LLM fine-tuning and optimization approaches
• Focus on applied research projects including retrieval-augmented systems (RAG), multimodal modeling, and large-scale learning for e-commerce
• Work on algorithms from the idea stage to deployment, building robust experimentation pipelines and evaluation frameworks for production-ready AI
• Interact directly with partners, collaborating closely with engineering and product teams to bring research prototypes into the eBay ecosystem
• Contribute to Core AI strategy by taking ownership of research components and delivering measurable impact on product-facing systems
• Collaborate with world-class researchers to contribute to technical discussions, documentation, and internal thought leadership

Benefits

• Flexibility to choose your working hours and location
• Value remote work with invitation to join in person to build relationships
• Creative, human-scale culture with space to grow and freedom to innovate