Three voices behind
DeFi Books.

Jesper holds a PhD and two master's degrees in Applied and Engineering Physics from Cornell, and his work has been cited more than 400 times in academic literature. His career has run through industrial R&D, quantitative finance, and crypto — four years at General Electric Research producing nine peer-reviewed papers, a book chapter, and seventeen invited talks; followed by stints in tech and finance, and leading a large Web3 research department.

He is co-founder of Panoptic, the DeFi options protocol built on top of Uniswap V3, where he led a $4.5M funding round backed by gumi Cryptos, Coinbase Ventures, Uniswap Labs Ventures, Jane Street, and Avalanche's Blizzard fund. Panoptic was named to Fast Company's "World Changing Ideas." He is also co-founder of Direct.dev, a new approach to Web3 RPC, and is building PsiFi, a US–Mexico remittances platform. He holds two patents and is an investor in companies including SpaceX and Databricks.

Beyond the books, Jesper teaches DeFi on his YouTube channel — long-form tutorials on Solidity, the EVM, smart-contract security, and DeFi mechanics, with 80,000+ views and 7,400+ subscribers.

His work and commentary have been featured in Finance Feeds, the European Financial Review, Business Leader, Crypto.News, and HackerNoon.

Miguel Ottina is a mathematician from Buenos Aires. He earned his degree in Mathematics in 2005 and his PhD in 2009, both from the University of Buenos Aires, then spent more than a decade as a university professor with a steady stream of peer-reviewed publications and more than fifteen conference presentations.

In early 2022 he turned his attention to Web3, applying his mathematical training to cryptocurrencies and decentralized finance. He has since become a recognized expert on Automated Market Makers and works as a DeFi Research Analyst.

Peter Johannes Steffensen is a mathematician with a PhD from the University of Aarhus. He has spent his career as a software architect across financial institutions, with concurrent part-time university appointments.

Drawn to Web3 by the chance to apply his mathematical and financial-systems background to a new domain, he has consulted in crypto for more than a year. His motivation for writing was straightforward: to give people looking for the principles behind Automated Market Makers a single, reliable place to find them.