Tianyi Liang
Vice President at Two Sigma
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolTianyi Liang is a Vice President at Two Sigma with 13 years of experience bridging research-grade formal methods and production software engineering. A Ph.D. in computer science from the University of Iowa, he pioneered SMT techniques for string constraints and implemented them in CVC4/CVC5, contributing bug fixes and a theory of strings to the widely used open-source SMT solver cvc5. He brings deep expertise in automated theorem proving and logic-based planning from academic and industrial research roles, and now applies that rigor to large-scale quantitative systems. Based in New York, Tianyi combines hands-on backend development with leadership in deploying reliable, formally grounded solutions at scale—an uncommon blend of theorem-proving research and practical engineering.
13 years of coding experience
5 years of employment as a software developer
BS/MS, Computer Science, BS/MS, Computer Science at East China University of Science and TechnologyDoctor of Philosophy (Ph.D.), Computer Science, Doctor of Philosophy (Ph.D.), Computer Science at University of Iowa
English, Chinese
Github Skills (7)
c-language10
cprogramming-language10
strings8
algorithms8
algorithm8
text-processing8
testing6
Programming languages (1)
Github contributions (2)
cvc5/cvc5
Feb 2013 - Aug 2015
cvc5 is an open-source automatic theorem prover for Satisfiability Modulo Theories (SMT) problems.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:318 commits, 15 pushes in 2 years 6 months
Contributions summary:Tianyi contributed to the `cvc5/cvc5` repository by fixing a bug in the rewriterule engine, specifically related to patterns in the constructor. The user also worked on implementing a theory of strings, creating a theory_strings.cpp file and incorporating it into the project. These changes involved modifying existing files related to the rewriterule engine and the theory of strings, indicating a focus on improving the SMT solver's functionality.
proversatisfiabilitysmtproblemssatisfiability-modulo-theories
tiliang/CVC4
Jan 2015 - Nov 2015
Contributions:37 pushes in 10 months
proversatisfiabilitysmtproblemssatisfiability-modulo-theories
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