Senior AI / LLM Full-Stack Engineer (EST / NYC)

NextGen Coding Company is hiring a Senior AI / LLM Full-Stack Engineer to design, build, and deploy production-grade AI systems for enterprise and regulated clients. The role focuses on embedding large language models into existing applications, building robust RAG pipelines, and delivering reliable, cost-efficient AI-powered features at scale.

Responsibilities:

• Embed large language models into existing enterprise applications and workflows
• Design, build, and maintain Retrieval-Augmented Generation (RAG) pipelines
• Integrate AI services with internal APIs, databases, and data platforms
• Develop backend services and supporting infrastructure for AI-driven features
• Implement light frontend components as needed to support AI functionality
• Optimize prompt quality, system latency, and inference cost across deployments
• Collaborate closely with client engineers, architects, and product owners
• Support production monitoring, debugging, and iterative improvement of AI systems

Requirements:

• 5+ years of professional software engineering experience
• 2–3+ years of hands-on AI / LLM work in production environments
• Strong proficiency in Python
• Experience working with LLMs such as GPT-4, Claude, or equivalent models
• Practical experience building RAG systems using LangChain or similar frameworks
• Experience with vector databases such as Pinecone, FAISS, or Weaviate
• Backend development experience with FastAPI, Flask, and/or Node.js
• Frontend familiarity with React or equivalent frameworks (not design-heavy)
• Cloud experience with AWS or Azure
• Full availability during Eastern Time Zone business hours
• Experience supporting enterprise or regulated clients strongly preferred