Paul Etscheit - Founder at Bankai

Paul Etscheit

Founder at Bankai

Berlin, Germany

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Summary

👤

Senior

🎓

Top School

Paul Etscheit is a protocol engineer and founder based in Berlin with a decade of software experience focused on zero-knowledge infrastructure and applied cryptography. He builds recursive, stateless ZK light clients and has spun research into product at Bankai after prototyping the approach at Herodotus, where he implemented Cairo-based RLP decoding, MPT/MMR verification, and custom Cairo–Rust syscalls for trustless Ethereum state access. Paul has hands-on cryptography experience—BLS, hash-to-curve, SHA-256 padding—and practical expertise designing proof aggregation and recursion schemes for efficient on-chain verification. Earlier work includes Substrate development at t3rn (Ethereum PoS sync-committee light client and cross-chain executor tooling) and contributions to the ZoKrates zkSNARK toolbox, notably adding ABIv2 and CLI proof-formatting features. He pairs academic rigor from TU Berlin research with startup pragmatism, having founded two ventures and shipped production Rust and Cairo tooling. An uncommon strength is his ability to bridge low-level Ethereum internals, proof-system research, and deployable engineering for minimal-cost on-chain verification.

10 years of coding experience

8 years of employment as a software developer

Nanodegree Deep Learning Foundations, Nanodegree Deep Learning Foundations at Udacity

Bachelor of Science (BSc) Wirtschaftsinformatik, Bachelor of Science (BSc) Wirtschaftsinformatik at Technische Universität Berlin

Junior Full Stack Developer Full Stack Developer, Junior Full Stack Developer Full Stack Developer at Dev Bootcamp

Abitur Abitur, Abitur Abitur at Nelson Mandela School Berlin

German, English, French

Stackoverflow

Stats

503reputation

134kreached

2answers

16questions

Github Skills (20)

solidity10

command-line-interface10

zksnark10

command-line10

rust10

cli10

ethereum9

apidoc8

api8

json8

angular-material6

angular6

nodejs6

typescript6

forms6

Programming languages (13)

C#CSSRustGoHTMLJupyter NotebookTypeScriptSolidity

Github contributions (5)

Zokrates/ZoKrates

Apr 2019 - Jan 2021

A toolbox for zkSNARKs on Ethereum

Role in this project:

Back-end Developer

Contributions:43 commits, 47 PRs, 22 comments in 1 year 9 months

Contributions summary:Paul primarily focused on enhancing the ZoKrates codebase. They added functionality related to the testing pipeline, including adding arguments for contract calls. The user introduced new commands to the command-line interface (CLI) for printing proofs in various formats. A significant contribution was the implementation of ABIv2 in both the CLI and core components, specifically modifying the Solidity verifier.

snarkethereumverifiable-computationtoolboxzero-knowledge

petscheit/garaga

Oct 2023 - Feb 2025

Efficient pairing library, written in Cairo 🐺.

Contributions:15 PRs, 46 pushes, 12 branches in 1 year 4 months

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