Henry Bubert
Lead Software Engineer at MassMarket Labs
Hamburg, Germany
Summary
🤩
Rockstar🎓
Top SchoolHenry Bubert is a lead software engineer based in Hamburg with 16 years of experience building resilient distributed systems and developer tools. He brings deep hands-on expertise in peer-to-peer and IPFS/libp2p ecosystems, contributing core functionality, stability fixes, and test coverage to high-profile open-source projects like ipfs/kubo and libp2p. At Muse and Secure-Scuttlebutt he focused on local-first databases, gossip/replication servers, and networking primitives, pairing backend engineering with QA and automation. Now leading engineering at MassMarket Labs after CTO and senior roles, he blends architecture-level thinking with frequent low-level bug fixes that improve reliability. Colleagues rely on him for pragmatic improvements across networking, storage, and protocol code—work that often lives at the intersection of cryptography, context management, and daemon tooling.
15 years of coding experience
6 years of employment as a software developer
Bachelor's degree, Computer Engineering, Bachelor's degree, Computer Engineering at Hamburg University of Technology
German, English
Github Skills (31)
context-manager10
debug10
javascript10
api-design10
netstack10
testing10
net10
command-line-interface10
ipfs10
context-api10
networking10
libp2p10
go10
gossip10
command-line10
Programming languages (24)
Github contributions (5)
ipfs/kubo
Oct 2014 - Oct 2015
An IPFS implementation in Go
Role in this project:
Back-end Developer
Back-end DeveloperContributions:139 commits, 47 PRs, 153 pushes in 1 year
Contributions summary:Henry focused on implementing and refining the "block" and "object" commands within the IPFS project's core functionality, which involved managing raw IPFS blocks and DAG nodes. The commits reveal significant code changes in files related to command definitions, data retrieval, and storage, alongside adjustments to logging mechanisms. Their work also included modifications to daemon functionality and command help texts to ensure proper execution of the implemented features, encompassing a good breadth of core functionality.
golangipfsp2porbitdblibp2p
ssbc/ssb-server
Dec 2016 - Dec 2019
The gossip and replication server for Secure Scuttlebutt - a distributed social network
Role in this project:Back-end Developer
Back-end DeveloperContributions:26 commits, 8 PRs, 16 pushes in 3 years
Contributions summary:Henry made several bug fixes and improvements to the `ssb-server` codebase. These changes included fixing issues related to invite creation, error handling in gossip plugins, and passing configuration parameters to the ssb-client. The user also addressed code related to message synchronization and removed outdated or problematic code. These contributions suggest a focus on improving the stability and functionality of the server.
golangsecuresecure-scuttlebuttsocial-networkscuttlebutt
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