Franz-stefan Preiss
Senior Software Engineer at Siemens AG
Zürich Metropolitan Area Switzerland
Summary
🤩
Rockstar🎓
Top SchoolFranz-stefan Preiss is a Senior Software Engineer based in Zurich with 11 years of professional experience spanning research-grade security work and production blockchain systems. At DFINITY he contributes to the Internet Computer's core replica and canister sandbox, shaping TLS interfaces, state management and system-call behavior that impact node-level correctness and performance. His background includes a PhD-era track record at IBM Research of shipping privacy-preserving authentication prototypes, leading engineering teams, and turning research into press-covered deployments and patents. Comfortable in low-level back-end systems as well as cloud-hosted Java and web services, he blends academic rigor with pragmatic engineering delivery. An often-understated strength is his history of guiding cross-disciplinary teams from prototype to scalable product while maintaining a focus on security and measurable impact.
11 years of coding experience
12 years of employment as a software developer
Vienna University of TechnologyElektronische Datenverarbeitung u. Organisation, Elektronische Datenverarbeitung u. Organisation at HTL St. PöltenDoctor of Engineering (PhD), Computer Science, Doctor of Engineering (PhD), Computer Science at KU LeuvenComputer Science, Computer Science at ETH ZurichComputer Science, Computer Science at University of Zurich
German, English, German, Swedish
Github Skills (6)
rust10
system-programming10
back-end-development10
blockchain10
cryptography9
rust-wasm8
Programming languages (8)
Github contributions (5)
dfinity/ic
Dec 2021 - Jan 2023
Internet Computer blockchain source: the client/replica software run by nodes
Role in this project:
Back-end Developer
Back-end DeveloperContributions:299 reviews, 165 commits, 140 PRs in 1 year 1 month
Contributions summary:Franz-stefan primarily worked on back-end development tasks related to the Internet Computer blockchain project, specifically focusing on the `ic` replica source code. Their contributions included making changes to the canister sandbox and canonical state modules to define ownership of specific directories. The user's work also involved modifications to the TLS interfaces, with documentation updates regarding stream flushing. Their code changes impacted the core functionality of the IC, including memory and system calls.
blockchain
caffeinelabs/motoko-bitcoin
Sep 2024 - Apr 2026
Bitcoin library for Motoko
Contributions:15 reviews, 1 PR, 6 pushes in 1 year 7 months
bitcoin
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