CollaboratePrivatelyProve Publicly.
Networks and tools for private shared state.
→Learn more→Networks & Tools
We're building cryptographic compute networks for private state and proof delegation,
enabling collaborative computation on encrypted data with verifiable correctness.
CoCircom
Collaborative SNARKs for Circom
Status: Feature Complete
Developer tooling to run circom circuits in an MPC environment.
TACEO:Proof
Proof Delegation
Beta Subnet
CoNoir
Collaborative SNARKs for Noir
To address the industry's critical gap in private computation,we propose coSNARKsas a solution.
They combine the strengths of Multiparty Computation and Zero-Knowledge Proofs to achieve:
→Learn more→Creation of Private
Shared State:
Controlled access to previously inaccessible data that can fuel a new pillar of the industry.
Maintaining
Verifiability:
Increased use of SNARKs in the industry brings trust that should be kept even in confidential compute environments.
Collaborative Confidential
Computing:
Enable parties to compute collaboratively on private data from different sources while ensuring confidentiality.
Unlockblockchain'sfull potentialwith privateshared state.
We are
TACEO
Ais
Connolly
Chief Strategy Officer
Aisling holds degrees in math, economics, and computer science, and obtained her PhD from the ENS in Paris in 2019. She has spent the past years working extensively on threshold cryptography and confidential computing, in both trad-fi and web3. Beyond this, she also worked on scientific and technical direction, strategy, and the legal aspects of building and using privacy tech.
Ais
Connolly
Chief Strategy Officer
Christian
Rechberger
Chief Scientist
Christian is co-founder of TACEO and Prof. at TU Graz. He is known for his work on cryptanalysis, and co-designer of a number of MPC-friendly, ZK-friendly, and FHE-friendly cryptographic primitives including the Poseidon hash function.
Christian
Rechberger
Chief Scientist
Daniel
Kales
CTO
Daniel is a co-founder and technical lead at TACEO. Before that, he completed his PhD at TU Graz on the topic of Post-Quantum Signatures built using MPC-in-the-Head ZK protocols and was a co-author of the Picnic submission to the NIST Post-Quantum Standardization project. Additionally, Daniel is responsible for ensuring that high quality coffee is consumed at TACEO.
Daniel
Kales
CTO
Fabian
Gruber
Engineer
Before joining TACEO, Fabian worked at the SIC Stiftung of the ISEC Institute at the Technical University of Graz, where he implemented full-stack and cryptography applications for eGovernment solutions. He earned a Master's degree in Computer Science at the same institute. For his Master's thesis, he focused on MPC, specifically developing tools to achieve general-purpose MPC from RISC-V assembly.
Fabian
Gruber
Engineer
Florin
Fabsits
Research Engineer
Florin joined TACEO in January 2024. Before that, he earned a Master's degree in Mathematics from Graz University of Technology, specializing in discrete mathematics with a particular focus on commutative and noncommutative algebra. Outside of work, he enjoys cycling and regularly attends GAK matches, though he often ends up regretting it by Monday.
Florin
Fabsits
Research Engineer
Franco
Nieddu
Engineer
Before joining TACEO, Franco worked at the SIC Stiftung of the ISEC Institute at the Technical University of Graz, where he was a cryptographic engineer focused on eGovernment solutions and the secure implementation of cryptographic algorithms on the Java platform. His work primarily involved AdES signatures and post-quantum cryptography. He completed his Master's degree in Computer Science at the same institute.
Franco
Nieddu
Engineer
Lukas
Götz
CPO
Lukas has been actively involved in the crypto space since 2014. He has co-founded multiple web3 ventures focused on DeFi, RWA and token investments. In 2018, he pioneered a novel application of smart contracts by deploying the first legally binding, on-chain wedding contract—an early milestone in the intersection of blockchain and legal innovation. At TACEO, Lukas shapes the long-term product strategy.
Lukas
Götz
CPO
Lukas
Helminger
CEO
Before co-founding TACEO, Lukas was a cryptography researcher and lecturer at Graz university of Technology and at the Austrian Defense Department. Prior to studying mathematics, he competed in international cycling races.
Lukas
Helminger
CEO
Roman
Holler
Engineer
Roman graduated from Graz University of Technology with a Master's degree in Computer Science. He focused on the application of zk in the steel industry during his Master’s thesis at the ISEC institute. During and after his studies, Roman worked for PSI Metals who provides production management solutions for the metals industry before joining TACEO in 2023.
Roman
Holler
Engineer
Roman
Walch
Lead Cryptographer
Roman is a co-founder and the lead cryptographer of TACEO, a small company with the goal of making private computation using cryptography the default option in Web3. Before that, he obtained a PhD in Cryptography at Graz University of Technology, advised by Prof. Christian Rechberger. His main research interests include privacy enhancing technologies (MPC, ZK, FHE), their intersection with symmetric primitives, and their application to real world use cases.
Roman
Walch
Lead Cryptographer
Shaked
Engelstein
Executive Assistant
Before joining TACEO, Shaked worked as a software engineer in the semiconductor industry, where she implemented embedded cryptographic libraries. She later transitioned into a role as a security evaluator, specializing in in-depth security code reviews. Currently, she is completing her studies in computer science. At TACEO, Shaked brings a sharp eye for detail, a no-nonsense approach to problem solving, and a deep appreciation for good food, all shared over a good debate.
Shaked
Engelstein
Executive Assistant
Stefan
Plank
COO
Stefan is a serial entrepreneur with a strong track record of building successful businesses. He thrives on entrepreneurship, finding joy in building and growing businesses. Customer-centricity, streamlined structures, effective communication, and high-performing teams are top priorities for him to ensure success. Giving ideas and organizations structure, he enables the realization of ambitious visions while ensuring the delivery of exceptional products and services. He holds a degree in civil engineering and business administration.
Stefan
Plank
COO
Latest fromour Blog
Introducing TACEO:Proof
→April 30, 2025
TACEO:Proof is live for beta testing. We're inviting interested developers and potential node operators to get in touch to participate in this development stage of our prover network. Right now, the network is producing Groth16 proofs, support for additional proof systems will follow in later phases. This blog post serves as an introduction to the TACEO:Proof network.
Multiparty Notaries for zkTLS
→February 6, 2025
TACEO 2024: Coffee, Code, and CoSNARKs
→December 19, 2024