Jordan Horwich
Pittsburgh, Pennsylvania, United States
Summary
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Rockstar🎓
Top SchoolJordan Horwich is a software engineer with 11 years of experience building secure, high-performance systems across startups and tech giants, currently at Apple after five years on Google's Knowledge Graph. He was the first employee and a core developer at Nebulous, where he helped launch Sia, dramatically sped up blockchain sync performance, and hardened the P2P gateway against eclipse attacks—experience that blends distributed systems, crypto-aware engineering, and product-facing responsibilities. Jordan contributes to open-source blockchain tooling (notably fixes and security tests in the Sia project) and brings a strong Go background coupled with rigorous testing and secure-wiping practices. His early work spans low-level C++ image processing and hardware interfacing to UI and large-scale backend services, showing both systems depth and product sensibility. Based in Pittsburgh, he pairs pragmatic engineering with curiosity—evident in an offbeat Github bio that confesses a passion for bucatini.
11 years of coding experience
Dropped out senior year to work on Sia Computer Science and Physics dual major, Dropped out senior year to work on Sia Computer Science and Physics dual major at Rensselaer Polytechnic Institute
Stackoverflow
3reputation
322reached
0answers
1question
Github Skills (9)
testing10
go10
merkle-tree10
cryptography10
blockchain10
security10
json8
ppl6
concurrency6
Programming languages (6)
Github contributions (5)
NebulousLabs/Sia
Dec 2015 - May 2017
Blockchain-based marketplace for file storage. Project has moved to GitLab: https://gitlab.com/NebulousLabs/Sia
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:363 commits, 122 PRs, 256 pushes in 1 year 5 months
Contributions summary:Jordan primarily contributed to the Sia blockchain project by fixing bugs related to the Merkle tree implementation, specifically addressing padding issues and simplifying the `ReadSegments` implementation. They also improved the codebase by using `encoding/hex` for encoding and decoding hashes, adding tests for secure wiping, JSON marshalling of Ciphertext and Hash, and implementing tests for the `MerkleTree.ReadSegments` functionality. These changes show a focus on improving code reliability, security, and testing, especially within the crypto package.
blockchaingitlabclouddecentralizeddistributed
VoidingWarranties/Sia
Dec 2015 - May 2017
Contributions:237 pushes, 72 branches, 2 comments in 1 year 5 months
file-storagemarketplaceblockchainstorage
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