Sean

Work Experience

Amazon logo
May 2025 - Aug 2025

Amazon

Software Development Engineer Intern - Selling Partner Financial Technology

  • Cut support tickets by 90% and saved 133 hours/year by building an internal tool for merchant reclassification
  • Reduced 0.25 FTE of engineering effort by consolidating two legacy systems into a unified web interface
  • Built an AI agent to detect and fix stuck financial transactions, eliminating 70+ hours/year of manual effort
Klue logo
Jan 2025 - May 2025

Klue

Software Engineer Co-op - Gen AI

  • Redesigned LLM citation handling to support streaming, increasing multi-source citation rate by 161% and contributing to a 62% reduction in response latency
  • Developed Langfuse metrics in Python to assess LLM attribution, categorization, and quality, using insights to guide prompt tuning and improve citation accuracy
  • Reduced response time by 53% on repeated sales tip queries by reusing precomputed recommendations
  • Increased recall of smaller LLMs by 64% through prompt tuning experiments targeting sales use cases
UBC Cloud Innovation Centre logo
May 2024 - Dec 2024

UBC Cloud Innovation Centre

Software Developer Co-op

  • Built and deployed two serverless AI chatbots using AWS CDK for student support and public digital services, enabling 24/7 course Q&A and strategy feedback
  • Enabled multi-tenant RAG with PGVector, cutting LLM response times by 25% in LangChain pipelines
  • Reduced infrastructure costs by $3197 USD/year by optimizing deployment architecture across chatbot services
University of British Columbia logo
Sept 2022 - Dec 2023

University of British Columbia

Undergraduate Teaching Assistant

  • Supervised labs for over 250 undergraduate students, offering guidance during labs and feedback on problem sets