Julian Knutsen
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolJulian Knutsen is a seasoned engineering leader and co-founder with 11 years of experience building distributed systems, hardware-integrated products, and consumer-facing Bitcoin infrastructure from 0→1. As CTO of Gas City and former Director of Engineering at Cash App and Block, he has led teams of up to 30 engineers to ship self-custody Bitcoin experiences, hardware wallets, and high-throughput backend systems. He combines hands-on systems programming (storage, clustering, P2P networking) with product and process rigor—implementing agile product workflows, test automation, and release practices that consistently improved velocity and reliability. An active open-source contributor, he made significant improvements to Bisq’s P2P data storage layer, cutting startup bandwidth and hardening inter-node persistence with exhaustive regression tests. Comfortable across C/C++, Java, and Python stacks, Julian pairs deep technical chops with entrepreneurial instincts from running web businesses and scaling teams. Based in Seattle with a UW Computer Engineering background, he often bridges hardware, cryptography, and user experience to make complex blockchain tech approachable.
11 years of coding experience
6 years of employment as a software developer
Bachelor’s Degree, Computer Engineering, Bachelor’s Degree, Computer Engineering at University of Washington
Github Skills (13)
unit-testing10
javas10
mockito10
p2p10
testing10
java9
bitcoins9
bitcoin9
data-structures8
test-automation8
data-structure8
git7
javafx6
Programming languages (5)
Github contributions (5)
bisq-network/bisq
Oct 2019 - Dec 2019
A decentralized bitcoin exchange network
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:128 commits, 29 PRs, 132 comments in 1 month
Contributions summary:Julian primarily focused on developing and testing core functionalities within the decentralized bitcoin exchange network. Their work centered on implementing robust tests for the P2P data storage module, significantly increasing code coverage and identifying potential bugs. They refactored existing code to improve readability and maintainability, addressing synchronization issues and streamlining the removal of expired or problematic data. This involved direct interaction with core data structures and ensuring the integrity of the system.
exchangep2pdecentralizedbisqcryptocurrency
julianknutsen/python-ndk
Mar 2023 - Apr 2023
Python development kit for Nostr
Contributions:199 PRs, 307 pushes, 201 branches in 1 month
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