Experience

Agentic Automated Reasoning Group, with Dr. Rustan Leino

• Designed a region type system for Dafny to improve verification performance, controlled aliasing, and abstraction boundaries.
• Implemented an executable verifier prototype for a minimal language by translating region-typed programs to Boogie verification conditions.
• Developed a Dafny proof of key type-safety properties for the type-system design.

Automated Reasoning in Identity, with Jenny Xiang

• Integrated an immutability type checker into internal AWS Java code to evaluate practical annotation requirements and compatibility constraints.
• Extended Dafny-to-Java compiler support to preserve immutability specifications through generated Java annotations.
• Identified a Dafny-to-Java compiler design bug exposed by immutability annotation translation.
• Evaluated the translation on more than 4,000 lines of internal code with 67 immutability annotations.