Principal Full Stack Engineer
Core
Lead architecture and delivery of production-grade AI-powered systems, designing agentic workflows and integrating large language models for Lennar's homeowners and communities.
Role type
Principal Full Stack Engineer (AI/ML)
Builds
Multi-agent and agentic workflow systems, RAG pipelines, LLM-powered front-end experiences, and high-throughput back-end inference services.
Domain
Real Estate / AI Engineering
Deliverable
production ML models | product features
Required skills
Go, TypeScript/JavaScript, LLM integration, RAG architectures, distributed systems, API design, cloud-native infrastructure, multi-agent orchestration, LLM evaluation frameworks, responsible AI practices.
Preferred skills
Open-source AI contributions, technical writing on AI engineering, experience in regulated/enterprise environments.
Technologies
LangGraph, CrewAI, AutoGen, OpenAI, Anthropic, Gemini, Ollama, vLLM, React, Node.js, Go, AWS, LangSmith, Helicone, Grafana.
Responsibilities
Design and own end-to-end AI features from prompt engineering to scalable APIs; Architect multi-agent systems; Build RAG pipelines; Integrate LLM providers with robust controls; Deliver polished front-end experiences; Build and maintain high-throughput back-end services; Define and implement LLM evaluation frameworks; Mentor senior engineers and conduct code reviews.
Seniority
Principal, hands-on IC with mentorship