Stefan Deml
Co-Founder CTO at Decentriq
Zurich, Zurich, Switzerland
Summary
🤩
Rockstar🎓
Top SchoolStefan Deml is a Zurich-based Co-Founder and CTO with eight years of experience building privacy-preserving cloud and cryptography solutions. He leads Decentriq, focused on redefining trust in cloud computing, and previously served as a Cryptography Engineer at the Ethereum Foundation working on zero-knowledge, MPC and trusted execution technologies. As an active open-source contributor he implemented Ethereum-specific SHA256 gadgets and libsnark integrations for the widely used ZoKrates zkSNARK toolbox, directly improving verifiable-computation tooling. His career spans product and engineering leadership in big-data and mobility at Teralytics and founding a renewable-energy spin-off, pairing an MSc from ETH Zurich with a pragmatic, cross-domain approach to secure, auditable systems.
8 years of coding experience
7 years of employment as a software developer
Eidgenössische Technische Hochschule Zürich
Github Skills (5)
zksnark10
sha25610
rust10
cryptography10
ethereum9
Programming languages (15)
Github contributions (5)
Zokrates/ZoKrates
Sep 2018 - Oct 2019
A toolbox for zkSNARKs on Ethereum
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:137 commits, 26 PRs, 72 pushes in 1 year
Contributions summary:Stefan contributed significantly to the core functionality of the zkSNARK toolbox, "zokrates/zokrates." Their work involved implementing cryptographic gadgets for SHA256 hashing, particularly focusing on an Ethereum-specific SHA256 variant. This included building constraints, witnesses, and integrating libsnark gadgets to provide verifiable computation. The user's changes also touched upon supporting multiple libsnark gadgets.
snarkethereumverifiable-computationtoolboxzero-knowledge
stefandeml/zokrates-pycrypto
Feb 2019 - Jun 2019
Contributions:42 commits, 2 PRs, 39 pushes in 3 months
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