Constance Beguier
Applied Cryptographer at Tandem Technology
Strasbourg, Grand Est, France
Summary
👤
Senior🎓
Top SchoolConstance Beguier is an applied cryptographer with a decade of experience translating cutting-edge privacy tech—ZKPs, SMC, FHE, and differential privacy—into production-ready systems. She currently researches and implements ZK tooling and Zcash Shielded Assets at QEDIT while co-founding Tandem Technology to consult on ZKP circuits, Solana smart contracts, and privacy-preserving ML. Her background spans biometric cryptography and healthcare ML from Safran and Owkin, where she combined research publications and patents with practical secure multiparty and federated learning deployments. Comfortable in Rust, Go and shell scripting, she has contributed to DARPA SIEVE zkinterface efforts and implemented halo2-based Rust components, highlighting a rare blend of protocol-level research and systems engineering. Based in Strasbourg, she also builds training programs and runs security simulations, making her as effective advising teams as she is coding proofs-of-concept. Notably, her profile mixes deep academic roots from Télécom Paris and KTH with hands-on blockchain development on Solana, reflecting a pragmatic approach to applied cryptography.
10 years of coding experience
3 years of employment as a software developer
Classe Préparatoire MPSI-MP*, Classe Préparatoire MPSI-MP* at Lycée CorneilleMachine learning et intelligence artificielle, Machine learning et intelligence artificielle at KTH Royal Institute of TechnologyDiplôme d'ingénieur, Cryptographie et théorie de l'information, Diplôme d'ingénieur, Cryptographie et théorie de l'information at Télécom ParisSolana developer, Solana developer at Alyra, l'école blockchain & IA
French, English
Github Skills (15)
cryptocurrency10
zcash10
cryptography10
differential-privacy9
deep-learning8
machine-learning8
pytorch8
workingcopy7
neural-network6
hash-functions6
rust1
solana1
crate1
encryption1
convenience-methods1
Programming languages (8)
Github contributions (5)
QED-it/halo2
Mar 2023 - Jun 2026
https://github.com/QED-it/halo2/tree/zsa1
Contributions:17 reviews, 46 PRs, 143 pushes in 3 years 3 months
ConstanceBeguier/helpme
Nov 2020 - Jun 2025
Shortcut to display help about custom notes written in markdown
Contributions:4 pushes in 4 years 7 months
shortcutnotesmarkdown
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