Mark TellezMark Tellez

Large Language Models: From Prompts to Production

My expertise with Large Language Models spans from early GPT-3 to the latest frontier models. I've implemented sophisticated LLM solutions across diverse domains—from customer service automation to content generation and knowledge extraction systems. My approach combines technical depth with strategic thinking, ensuring LLM applications that deliver tangible business value.

LLM Expertise That Delivers Results

I bring comprehensive knowledge of the LLM ecosystem, from cloud-based API solutions to locally-hosted open-source models. My experience includes:

Prompt Engineering

Crafting sophisticated prompts that maximize model performance for specific tasks, including chain-of-thought reasoning and structured outputs.

RAG Systems

Building Retrieval Augmented Generation systems that combine LLMs with vector databases to deliver accurate, context-aware responses from private knowledge bases.

Fine-Tuning

Customizing models for specific domains and tasks through parameter-efficient fine-tuning techniques like LoRA and QLoRA.

Agentic Systems

Developing autonomous AI agents that leverage LLMs for reasoning, planning, and executing complex tasks with minimal human intervention.

Model Quantization

Optimizing models for deployment on resource-constrained environments while maintaining performance quality.

Key Capabilities

End-to-end LLM solutions from concept to production deployment
Integration with existing systems and workflows
Cost optimization strategies for LLM implementations

Real-World Applications

My LLM expertise has delivered tangible results across multiple domains:

At Zooly AI, I implemented sophisticated RAG systems that enabled precise information retrieval from massive document collections, reducing research time by over 70% while maintaining high accuracy.

For several clients, I've built custom chatbots and virtual assistants that leverage fine-tuned models to provide domain-specific expertise, resulting in significant reductions in support costs and improved customer satisfaction.

Let's Build Your Next LLM Solution

Looking for an LLM expert who can deliver production-ready AI solutions? I'm ready to help transform your requirements into efficient, actionable systems that provide real business value.