Logan Saether, Developer in Berlin, Germany
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Logan Saether

Verified Expert  in Engineering

Blockchain Developer

Berlin, Germany
Toptal Member Since
May 13, 2020

Logan is a developer with expertise in the blockchain space. He has built entire projects around blockchain. As an entrepreneur, he has conceptualized and delivered many of his own products. Logan has written and managed smart contract interactions on the Ethereum blockchain, written applications using the Substrate blockchain framework, built infrastructure, managed complex integrations, and managed security audits.



Preferred Environment

Go, Haskell, Redux, React, MongoDB, JavaScript, Bitcoin, Solidity, Ethereum, Blockchain, TypeScript, Rust

The most amazing...

...open-source project I've worked on is The Ethereum Alarm Clock. It handles the decentralized scheduling and execution of Ethereum transactions.

Work Experience

Technical Education Developer

2019 - PRESENT
Web3 Foundation
  • Wrote example applications using the Substrate blockchain framework, which uses Rust. An example of a sample application is a complete port of Uniswap from the Ethereum contracts to a Substrate pallet.
  • Researched blockchain topics and maintained the Polkadot Wiki. Our goal is to make the Polkadot Wiki the best set of documentation in the entire blockchain space.
  • Built applications (some of which are in production) using TypeScript and the API libraries for Substrate, Kusama , and Polkadot.
  • Created front-end to applications that I build using React, TypeScript, Redux, and other frameworks.
  • Wrote and managed smart contract interactions on the Ethereum blockchain.
Technologies: WebAssembly, Blockchain, Rust, TypeScript

Smart Contract Engineer

2017 - 2019
  • Developed the infrastructure for a decentralized protocol which handled trustless scheduling of Ethereum transactions.
  • Built out developer tooling and ecosystem tools in JavaScript and TypeScript.
  • Completed an integration which has handled over $200,000 in direct transfers.
  • Used Solidity for smart contracts and made extensive application of libraries. Created and delivered security audits.
Technologies: TypeScript, Solidity, Blockchain, Ethereum

Ethereum Alarm Clock

The Ethereum Alarm Clock is an open source project which handles the decentralized scheduling and execution of Ethereum transactions.

Uniswap on Substrate

Uniswap is a protocol for swapping tokens on the Ethereum blockchain. I rewrote the code to make it work with the Substrate framework. This involved learning about the constant function market makers.


Solidity, TypeScript, Rust, JavaScript, Go


Substrate, Truffle, Redux


Ethereum, Linux, Blockchain




Agile Software Development




Bitcoin, WebAssembly

2013 - 2017

Bachelor of Science Degree in Computer Science

Arizona State University - Tempe, Arizona, USA

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