Denis Merigoux - Project Leader - Software Infrastructure To Support Public Policies at Inria

Denis Merigoux

Project Leader - Software Infrastructure To Support Public Policies at Inria

Paris, Ile-de-France

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Summary

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Rockstar

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Top School

Denis Merigoux is a project leader and research engineer with 11 years of experience bridging programming-language research and production software for public policy applications. Based in Paris and leading the Catala industrialisation at Inria’s Apollo programme, he coordinates teams that modernize and harden tax and social-security calculation software for government use. Technically rooted in formal methods and compilers, Denis contributes to flagship open-source projects like F*, Cranelift and Wasmtime—authoring loop analyses, LICM optimizations and WASM integration work that enable verified crypto and high-performance runtimes in the browser. He holds advanced training from École Polytechnique, CMU and ENS, and brings a rare mix of theorem-proving expertise and pragmatic engineering that accelerates technology transfer into the public sector.

11 years of coding experience

PhD, PhD at École normale supérieure

Ingénieur polytechnicien, Ingénieur polytechnicien at Ecole polytechnique

Master of Science in Computer Science, Master of Science in Computer Science at Carnegie Mellon University

Github Skills (31)

algorithm10

crypto10

code-optimization10

algorithms10

javascript10

dependent-types10

libcrypto10

control-flow-graph10

verification10

data-structure10

ocaml10

fstar10

crypt10

fs10

f10

Programming languages (17)

RustCCoqF*TeXHTMLJupyter NotebookM

Github contributions (5)

FStarLang/FStar

Jun 2019 - Feb 2021

A Proof-oriented Programming Language

Role in this project:

Backend Developer & Theorem Prover

Contributions:1 review, 647 commits, 3 PRs in 1 year 8 months

Contributions summary:Denis primarily contributed to the F* codebase by proving allocations for the `LowStar.Array` module, specifically modifying files related to reflection and OCaml output. They also made code changes adopting the `Steel.*` prefix for files related to Steel. The commits suggest a focus on formal verification and the use of dependent types within the F* programming language, as they are making low-level changes to memory management and applying new conventions in relation to the `Steel` library.

homotopy-type-theorycoq-librarytype-theorysat-solvercompiler

bytecodealliance/wasmtime

Jun 2017 - Aug 2018

A lightweight WebAssembly runtime that is fast, secure, and standards-compliant

Role in this project:

Backend Developer

Contributions:20 commits in 1 year 2 months

Contributions summary:Denis focused on implementing and improving the loop analysis feature within the WebAssembly runtime. Their contributions involved a multi-pass implementation for loop detection, creating a loop tree structure, and providing a new LoopAnalysis data structure for querying loop information. Furthermore, the user added loop invariant code motion (LICM) optimization, including pre-header creation and instruction movement. These changes are aimed at enhancing the compiler's optimization capabilities.

securejitcraneliftrustruntime

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