AI Engineer / Full-Stack Developer / Technical Lead

Senior AI Engineer & Full-Stack Developer

I build production Generative AI systems and lead the cross-platform teams that ship them, from RAG pipelines and AI chatbots to enterprise design systems.

Illustrated avatar of Derek Huynen

About

I'm a Senior AI and Full-Stack Engineer with 6+ years building production systems across Generative AI, cloud architecture, and enterprise product development. I specialize in RAG pipelines, AI chatbots, and intelligent document processing with Azure OpenAI, Azure AI Search, and Semantic Kernel, and I'm equally at home from React and TypeScript frontends through C# and .NET backends.

Today I lead an 18–21 person cross-platform engineering team at T-Mobile, and I recently led an enterprise GitHub Copilot rollout that grew adoption to roughly 6,000 developers. I care about shipping real products and building the teams that ship them.

Experience

IBM Senior Software Engineer

Jun 2025 – Present

Deployed to T-Mobile as Lead Solution Engineer across two engagements.

  • Arrow Design SystemNov 2025 – Present

    Technical lead of an 18–21 person cross-platform engineering team building Arrow, T-Mobile's enterprise design system, across web, iOS, and Android. I own the web platform end to end and built an MCP server that gives AI coding tools live access to the design system.

  • Enterprise GitHub Copilot RolloutJun 2025 – Oct 2025

    Led T-Mobile's enterprise GitHub Copilot rollout, growing adoption to roughly 6,000 developers. Built automated self-service access management and a live leadership metrics dashboard, ran value stream mapping, and delivered hands-on training.

Neudesic, an IBM Company Senior Consultant

May 2022 – Jun 2025

Delivered AI and full-stack solutions for enterprise clients across utilities, healthcare, publishing, and claims management.

  • PG&E · GenAI Regulatory Chatbot2025

    Core engineer on a proof-of-concept enterprise RAG chatbot over regulatory and compliance documents, built with Azure OpenAI, Azure AI Search, and Semantic Kernel.

  • Sedgwick · Copilot Enablement & Value Stream Mapping2025

    Led Copilot enablement and value stream mapping to baseline productivity ahead of org-wide AI adoption. The findings directly won follow-on AI work.

  • HarperCollins · Book Catalog RAG Chatbot2024

    Lead developer for the ingestion and retrieval layer of a RAG chatbot over a 500-book catalog, using semantic search and LLM multi-agent orchestration.

  • Confidential Hospital Claims Agency · Document Processing2024

    Sole developer on a proof-of-concept that normalized hospital rate sheets from multiple PDF formats into a single database using Azure Document Intelligence.

  • AMN Healthcare · Software Engineer2022 – 2024

    Built production frontends across AMN's nationwide nurse-staffing platform within a roughly 15-team enterprise program (React, Redux-Saga, Material UI, C#/.NET).

Gexbot Frontend Engineer, Freelance

2023 – 2025

Rebuilt gexbot.com from static chart images into a real-time React options-analytics app that grew to serve a 10,000+ trading community, with custom data-dense charts and live WebSocket streaming.

Pines Cabin Rentals Founder & Developer

2019 – 2022

Founded and ran a 20+ property vacation-rental business with a 5-star Airbnb rating while teaching myself software development, building the booking website and booking/cleaning automation.

Projects

Skills & Certifications

AI / GenAI

RAGAzure OpenAISemantic KernelAzure AI SearchPrompt EngineeringMulti-Agent OrchestrationLLMsMCP ServersGitHub CopilotDocument Intelligence

Frontend

ReactTypeScriptNext.jsZustandReduxRedux-SagaWebSocketsTailwind CSSMaterial UIWeb ComponentsStorybookChart.js

Backend

C#.NETNode.jsAzure FunctionsREST APIsWebSocket Streaming

Cloud & Data

AzureCosmosDBPostgreSQLBlob StorageAPI ManagementAzure ADMySQLDocker

Leadership

Technical LeadershipTeam LeadershipSystem DesignValue Stream MappingAgileDeveloper Training

Certifications

  • Microsoft Azure AI Engineer Associate (AI-102)
  • Microsoft Azure AI Fundamentals (AI-900)
  • Microsoft Azure Fundamentals (AZ-900)
  • Microsoft Azure Data Fundamentals (DP-900)
  • Power Platform Fundamentals (PL-900)