🧑‍💻

DON CALDWELL

AI-Powered Full Stack Engineer | Backend Python Specialist | LLM Integrator

https://github.com/doncaldwellux/CodeAlchemy

doncaldwellux@gmail.com

📞 972-533-9547

📍 Remote (Irving, TX preferred)

SUMMARY

AI-focused Full Stack Engineer with 9+ years of experience in backend systems, LLM integrations, and enterprise-scale application development. Specializing in Python-based backends, OpenAI API integration, prompt engineering, MongoDB, and Azure AI services. Adept at deploying production-ready GenAI solutions with emphasis on automation, scalability, and cross-functional team delivery. Proven track record deploying intelligent AI applications in fintech, e-commerce, and enterprise environments.

CORE TECHNICAL SKILLS

Languages:

Python

TypeScript

JavaScript (ES6+)

HTML5

CSS3

AI/ML & LLMs:

OpenAI API

Prompt Engineering

Azure OpenAI

Azure Document Intelligence

Azure AI Search

Generative AI

Gemini

ChatGPT

DevOps & Tools:

Docker

Kubernetes (intro)

Terraform (intro)

CI/CD

GitHub

Webpack

Notion

Jira

Backend & Infrastructure:

FastAPI

Flask

REST APIs

MongoDB

Node.js (basic)

Azure Pipelines

GitHub Actions

Frontend:

React.js

Tailwind CSS

Figma

Storybook (UI handoffs)

Testing:

Unit testing

API testing

load testing

performance tuning

Cloud:

Azure

Vercel

Netlify

PROFESSIONAL EXPERIENCE

Ulta Beauty – Remote

Staff UX Engineer / AI Systems Lead

Apr 2024 – Present

Designed and deployed AI-powered UI component libraries using OpenAI for code generation and test automation.
Built and documented RESTful APIs for scalable ecommerce features integrated with LLMs.
Leveraged Azure OpenAI and Document Intelligence to enable smart search and chatbot integrations across checkout and loyalty modules.
Collaborated cross-functionally to ship AI-ready experiences in React with backend Python integrations.

Citigroup – Remote

Design Technologist / LLM Integration Engineer

Feb 2022 – Mar 2024

Developed backend dashboards and APIs with Python for fintech transparency modules.
Integrated OpenAI APIs for automated QA, smart documentation, and GenAI UI flows.
Created production-ready tools using Azure AI Search and MongoDB to support internal banking applications.
Led cross-functional prompt tuning and model selection for LLM-powered prototypes.

Michaels Arts & Crafts – Irving, TX

Full Stack Developer (Angular + Python)

Dec 2018 – Jan 2022

Refactored backend ecommerce APIs and MongoDB queries to reduce latency by 28%.
Integrated Azure-based document processing and user analytics services.
Automated user onboarding flow using custom prompts and backend validation services.

Rexel USA – Dallas, TX

Backend Developer / UI Systems Integrator

Apr 2016 – Nov 2018

Developed Python-based service endpoints to sync transactional data across Salesforce and MongoDB.
Used Tableau and AI-driven insights to prioritize feature deployments and backend optimization.

EDUCATION

Bachelor of Business Administration - Marketing

Texas A&M University - Dec 2012

PROJECTS & DEMOS

CodeAlchemy (GitHub): AI resume optimizer using OpenAI + React + FastAPI
HyperCV: Full-stack ATS-scoring resume generator with Azure functions
LLM Dev Tools: Prompt IDE built with OpenAI API and backend prompt testing harness
Azure DocFlow: Prototype integrating Azure Document Intelligence for parsing invoice uploads

CERTIFICATIONS & TOOLING

Microsoft Certified: Azure AI Engineer Associate (in progress)
Prompt Engineering for Developers – OpenAI x DeepLearning.AI
ChatGPT API: Advanced Use Cases – PromptLayer

AVAILABILITY

Full-time contract (W2)
Available to start immediately
Remote-first with on-site availability in Irving, TX if required