Ready for Merge Ep. 21 👾

Meet Mark, a developer working for Sigma Prime on the Ethereum consensus layer (CL) client, Lighthouse.In 2013, Mark first heard about Bitcoin in a rap song. Three years later, the DAO hack introduced him to Ethereum — and set him on a path that would eventually lead him to become a core developer.After teaching himself Rust during the COVID-19 lockdowns, Mark began contributing to the Lighthouse client, and today he helps shape some of Ethereum’s most important upgrades.In this interview, Mark shares how he went from a curious outsider to a protocol developer and the lessons he’s learned along the way.This interview was recorded on August 20, 2025.Timestamps:(1:36) Mark’s biggest contribution to Ethereum(7:03) How Mark became a full-time Ethereum developer(16:07) Mark’s vision for Ethereum(33:10) An average day as an Ethereum developer(36:55) Advice for new contributors(40:20) Rapid-fire questions roundLinks: Mark MackeyX: https://x.com/EthDreamerLinkedIn: https://www.linkedin.com/in/mark-mackey-677b3679/GitHub: https://github.com/ethDreamerSigma PrimeOfficial Website (https://sigmaprime.io/)Blog (https://blog.sigmaprime.io/)LighthouseOfficial repository (https://github.com/sigp/lighthouse)Good first issues for new contributors to take on (https://github.com/sigp/lighthouse/issues?q=state%3Aopen%20label%3A%22good%20first%20issue%22) Get full access to Christine D. Kim at christinedkim.substack.com/subscribe