AI Engineering is an emerging role focused on building practical AI applications using large language models (LLMs), AI agents, and modern AI tools. As an AI engineer, you will integrate LLMs into applications, design prompts, build AI agents, implement RAG (Retrieval Augmented Generation), fine-tune models, and create AI-powered features. This comprehensive roadmap covers LLM fundamentals, prompt engineering, LangChain, vector databases, AI agents, fine-tuning, AI APIs (OpenAI, Anthropic, Google), and AI application architecture. AI engineers are in extremely high demand as companies race to integrate AI into their products. The role requires strong programming skills, understanding of AI/ML concepts, creativity in prompt design, and ability to build production AI systems. Unlike ML engineers who focus on training models, AI engineers focus on using pre-trained models to build applications.