Principal Data Engineer, LLM/AI Platforms

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Principal Data Engineer, LLM/AI Platforms based in United States.

• This is a principal-level engineering role focused on building the data infrastructure that powers next-generation LLM and AI platforms at massive scale.
• You will architect and optimize data platforms supporting LLMs, Retrieval-Augmented Generation (RAG), and sophisticated agentic systems.
• The role combines deep hands-on engineering with technical leadership, platform architecture, and continuous innovation.
• You will work with extremely large datasets and distributed systems while emphasizing scalability, resilience, performance, and cost efficiency.
• A major focus is turning advanced AI and data science concepts into reliable, production-grade services.
• You will collaborate with data scientists, product managers, and engineering teams while mentoring engineers and raising technical standards.
• This is an opportunity to shape AI platform engineering practices across critical, large-scale systems in a highly autonomous environment.