Profile
Nico Lehmann
Assistant Professor at University of Chile
nlehmann at dcc.uchile.cl
nilehmann Google Scholar

About Me

I'm interested in programming languages and program verification. My goal is to make formal verification part of the day-to-day development process by integrating formal methods into programming languages. I'm particularly interested in using these techniques to secure the low-level systems that power critical infrastructure. Check out my tool Flux, a refinement type checker for Rust that lets you specify a range of correctness properties and have them be verified at compile time.

Outside of research, I'm a decent musician. You can check my college band, Modesto Medio, in Spotify. Here's also a video of me performing with some fellow PhD students at the holiday party. I'm also a beer connoisseur—if you ever see me around, feel free to strike up a conversation about beer (or better yet, share one!)

Publications

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TickTock: Verified Isolation in a Production Embedded OS
In ACM SIGOPS Symposium on Operating Systems Principles (SOSP) 2025
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Generic Refinement Types
In ACM SIGPLAN Symposium on Principles of Programming Languages (POPL) 2025
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Flux: Liquid Types for Rust
In ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI) 2023
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STORM: Refinement Types for Secure Web Applications
In USENIX Symposium on Operating Systems Design and Implementation (OSDI) 2021
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Gradual refinement types
In ACM SIGPLAN Symposium on Principles of Programming Languages (POPL) 2017
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Formalizing Simple Refinement Types in Coq
In International Workshop on Coq for Programming Languages (CoqPL) 2016
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Wavelet trees for competitive programming
In International Olympiad in Informatics (IOI) 2016
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Implementing Graph Query Languages over Compressed Data Structures: A Progress Report
In Alberto Mendelzon Workshop on Foundations of Data Management (AMW) 2015
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