Joseph Delong
CEO at Colossus
San Antonio, Texas, United States
Summary
👤
Senior🎓
Top SchoolJoseph Delong is a technology executive and engineer with a decade of experience building and leading blockchain and fintech platforms, now serving as CEO of Colossus in San Antonio. He has held senior roles including CTO at Astaria and Sushi and Senior Director at Kraken, demonstrating a pattern of moving from hands-on engineering to strategic leadership. Early work as a core developer on ConsenSys's Teku—an influential open-source Ethereum consensus client—highlights deep expertise in consensus protocols, validator contracts, and Java backend systems. His background includes applied research and proof-of-concept development at USAA’s Blockchain Lab, where he bridged enterprise requirements with emerging distributed-ledger technologies. A former U.S. Air Force electronic warfare technician with a BS in Mathematics and Computer Science, he brings disciplined systems thinking and operational rigor to product and engineering decisions. Joseph combines low-level protocol knowledge with executive experience scaling teams and products in high-stakes crypto and financial environments.
10 years of coding experience
12 years of employment as a software developer
Bachelor of Science (B.S.) Mathematics and Computer Science, Bachelor of Science (B.S.) Mathematics and Computer Science at McMurry University
Stackoverflow
113reputation
493reached
0answers
1question
Github Skills (9)
solidity10
ethereum10
java9
blockchain9
staking9
javas9
typescript6
javascript6
dom6
Programming languages (16)
Github contributions (5)
Consensys/teku
Dec 2018 - Nov 2019
Open-source Ethereum consensus client written in Java
Role in this project:
Back-end Developer
Back-end DeveloperContributions:51 commits, 114 PRs, 42 pushes in 11 months
Contributions summary:Joseph primarily worked on implementing and updating the Validator Registration Contract (VRC) to reflect the Eth2 spec requirements. Their contributions included adding contract changes, creating scaffolding, and refactoring code within the `pow` directory of the `teku` repository. They also added helper functions and updated the VRC contract to reflect the Eth2 spec and implemented a deposit method with different deposit modes.
artemisconsensysethereumbeacon-chainblockchain
txrx-research/vorpal
Jan 2020 - Jun 2020
A Python simulator used to model cross shard transaction strategies for Ethereum 2.0
Contributions:46 commits, 36 PRs, 34 pushes in 5 months
pythonethereumshardsimulatortransaction
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.