Alex Smith — AI Automation Engineer

Freelance AI automation engineer specializing in LLM integration, workflow automation, chatbot development, and data pipeline engineering. Available for hire on Upwork and via email.

---

Portfolio Projects

A collection of professional projects showcasing web scraping, API integration, AI automation, and data processing skills.

📁 Projects Overview

1. AI Chatbot Engine (ai-chatbot-engine/)

A production-ready conversational AI engine with multi-provider LLM support, conversation memory, and tool-use capabilities.

Key Skills Demonstrated:

• Multi-provider LLM integration (OpenAI, Anthropic, Gemini, local models)
• Function/tool calling with extensible plugin system
• FastAPI REST API with streaming (SSE)
• Persistent conversation memory with SQLAlchemy
• JWT authentication and rate limiting
• Async Python architecture

Tech Stack: Python, FastAPI, SQLAlchemy, LiteLLM, Pydantic

---

2. AI Workflow Automation Engine (ai-workflow-automation/)

A YAML-driven framework for building AI-powered business workflow automations with LLM decision nodes, conditional routing, and webhook integrations.

Key Skills Demonstrated:

• YAML-based workflow DSL design
• Async Python architecture with asyncio
• LLM-powered decision nodes
• Webhook integrations and API orchestration
• Human-in-the-loop approval patterns
• Plugin/extension architecture

Tech Stack: Python, PyYAML, LiteLLM, aiohttp, Pydantic

---

3. ML Data Pipeline Framework (ml-data-pipeline/)

A modular framework for building machine learning data pipelines with extraction, transformation, validation, and export stages.

Key Skills Demonstrated:

• Modular pipeline architecture with composable stages
• Data validation and quality checks (nulls, ranges, uniqueness, schema)
• Multiple data sources (CSV, SQL, JSON, APIs)
• Feature engineering transformations
• Parquet/CSV export with versioning
• Async execution with observability

Tech Stack: Python, pandas, PyArrow, SQLAlchemy, Pydantic, PyYAML

---

4. E-Commerce Price Tracker (price-tracker/)

A production-ready price monitoring system that tracks product prices across e-commerce websites.

Key Skills Demonstrated:

• Web scraping with BeautifulSoup and requests
• SQLite database management
• Email notifications
• Configuration management
• Error handling and logging
• GitHub Actions CI/CD

Tech Stack: Python, BeautifulSoup4, requests, SQLite, python-dotenv

---

5. API Integration Demo (api-integration-demo/)

A comprehensive demonstration of REST API consumption with multiple authentication methods and best practices.

Key Skills Demonstrated:

• REST API design patterns
• OAuth2, API Key, and Bearer token authentication
• Rate limiting and retry logic
• Pagination handling
• Error handling and logging
• Unit testing with pytest
• GitHub Actions CI/CD

Tech Stack: Python, requests, pyyaml, pytest, responses

Quick Start:

cd api-integration-demo
pip install -r requirements.txt
export GITHUB_TOKEN=your_token_here  # Optional
python demo.py

---

6. Data Cleaning & Transformation Tool (data-cleaning-tool/)

A powerful pandas-based tool for cleaning, transforming, and analyzing messy datasets.

Key Skills Demonstrated:

• Advanced pandas operations
• Data type conversions
• Missing value handling
• Outlier detection
• Text standardization
• Email validation
• Data profiling and reporting

Tech Stack: Python, pandas, numpy, openpyxl, phonenumbers

Quick Start:

cd data-cleaning-tool
pip install -r requirements.txt
python clean_data.py

---

🎯 Portfolio Highlights

Code Quality

• Clean, modular architecture
• Type hints and docstrings
• Comprehensive error handling
• Logging throughout
• PEP 8 compliant

Testing

• Unit tests with pytest
• Mock-based testing for APIs
• Sample data included
• GitHub Actions workflows

Documentation

• Detailed README files
• Setup instructions
• Usage examples
• Sample outputs

---

📊 Project Structure

portfolio/
├── ai-chatbot-engine/       # Multi-provider LLM chatbot with tool-use
├── ai-workflow-automation/  # YAML-driven AI workflow engine
├── ml-data-pipeline/        # Modular ETL for ML training data
├── price-tracker/           # E-commerce price monitoring
├── api-integration-demo/    # REST API integration patterns
├── data-cleaning-tool/      # Pandas data cleaning toolkit
├── landing-page/            # Portfolio landing page
├── .github/workflows/       # CI/CD for all Python projects
├── LICENSE
└── README.md

---

🚀 Getting Started

git clone https://github.com/alexanderxfgl-bit/portfolio.git
cd portfolio

Each project has its own README with setup instructions.

---

📈 Skills Showcased

Skill	Chatbot	Workflow	Pipeline	Tracker	API Demo	Cleaner
LLM/AI Integration	✅	✅	-	-	-	-
Tool/Function Calling	✅	✅	-	-	-	-
REST API	✅	✅	-	-	✅	-
Data Processing	-	-	✅	-	-	✅
Data Validation	-	-	✅	-	-	✅
Async Python	✅	✅	✅	-	-	-
Database/SQLite	✅	-	-	✅	-	-
Testing	✅	✅	✅	-	✅	✅
CI/CD	✅	-	✅	-	✅	-

---

📄 License

All projects are released under the MIT License. See individual project LICENSE files for details.

---

👤 Contact

• GitHub: @alexanderxfgl-bit
• Email: alexanderxfgl@gmail.com

---

Built with ❤️ using Python