Robert Lee

Architected and delivered AI-powered full-stack solutions, including a GPT-4/LangChain recommendation engine that improved client conversion rates by 35%. Built Azure AI document processing and conversational AI features, cutting manual processing time by 80% and achieving 90% user satisfaction in automated support.

Integrated Azure OpenAI Services into Microsoft 365, developing intelligent content suggestions used by 50M+ monthly active users. Built conversational and real-time collaboration capabilities for enterprise tools, including 92% intent recognition accuracy and support for 100k+ concurrent Teams sessions.

Led full-stack initiatives for a large-scale marketplace, improving search relevance by 45% for 250M+ listings and reducing fraudulent transactions by 75% with scikit-learn-based detection. Built real-time chat supporting 2M+ daily conversations with 99.5% message delivery and migrated a PHP monolith to Node.js microservices, cutting API response times by 60%.

Designed and scaled backend systems, including a payment processing rebuild in Python (Flask/Celery) supporting $50M+ monthly transaction volume with 99.99% reliability. Built REST APIs handling 15M+ daily requests and implemented AWS Lambda/OpenCV image processing to reduce manual content moderation by 70%.

Developed core marketplace listing creation and management features using PHP/Laravel, supporting 5M+ active listings. Improved user conversion by 30% with responsive UI, implemented OAuth-based authentication, and reduced page load times by 35% through query optimization and caching.

Contributed to early-stage marketplace development by building user profile and messaging features using PHP and JavaScript. Implemented image upload and processing functionality for product listings and supported database schema design and data migration for user/product data.

Earned a Bachelor of Computing in Computer Science at Nanyang Technological University from 2011 to 2015.