LLM Engineer

Responsibilities

• Develop agentic AI systems including reasoning, planning, and orchestration capabilities
• Design and optimize RAG pipelines over engineering documentation and physics simulation results
• Implement persistent memory and context management for long-running engineering sessions
• Fine-tune and adapt LLMs for Physics AI and physics simulation domain expertise
• Deploy and scale production-grade LLM infrastructure for self-hosting and serving
• Integrate LLM capabilities with Physics AI training, evaluation, and inference pipelines
• Establish evaluation frameworks and metrics to measure copilot quality and accuracy
• Collaborate cross-functionally with researchers, platform engineers, and product teams

Requirements

• Bachelor's degree or higher in Computer Science, Mechanical Engineering, or Aerospace Engineering
• 5+ years of experience building production software or ML systems
• 2+ years of hands-on experience developing LLM-powered applications
• Strong proficiency in Python
• Experience with Agent Evals and coding agents like Claude Code
• Deep understanding of LLM architectures, prompting, and multi-agent orchestration
• Hands-on experience with RAG systems, vector databases, and memory management
• Experience building MCP (Model Context Protocol) servers
• Experience with agent frameworks such as LangChain, LlamaIndex, or Autogen
• Experience fine-tuning LLMs and self-hosting them in production

Preferred Qualifications

• Experience with TypeScript or Go
• Familiarity with Kubernetes and GPU infrastructure optimization
• Experience deploying ML systems on GCP, AWS, or Azure
• Background in CFD, structural analysis, or thermal simulation
• Experience building developer tools or copilot-style products

About the Company

Luminary helps engineering companies be more competitive by getting to market faster and reducing development risk through its Physics AI platform. Headquartered in San Mateo, California, Luminary is a Series B company serving industries from automotive and aerospace to sporting equipment.