Liam Horne
Product at Tempo
Canada
Summary
🤩
Rockstar🎓
Top SchoolLiam Horne is a product-focused software leader with 11 years of experience building blockchain infrastructure, developer communities, and high-performing engineering teams. He co-founded ETHGlobal and L4, grew OP Labs from a small team to ~70 people while launching the OP Stack and shaping Superchain strategy, and now leads product at Tempo building a payments-focused blockchain. Liam blends hands-on backend engineering—contributing to core open-source projects like The Graph indexer and Optimism’s L2 codebase—with operator-level experience in fundraising, partnerships, and developer growth. He has a track record of founding and scaling developer ecosystems (ETHGlobal’s 70k hackers) and launching commercial products used by major enterprises. Never content to stay in one lane, he pairs deep protocol-level technical work with product strategy and community building. Trained at Waterloo and Y Combinator, he brings startup grit and a habit of continuous learning to complex, production-grade systems.
11 years of coding experience
7 years of employment as a software developer
Y CombinatorThiel FellowshipComputer Science, Computer Science at University of Waterloo
Stackoverflow
867reputation
140kreached
9answers
5questions
python-requests
top-5%
Github Skills (32)
back-end-development10
testing10
ovf10
typescript10
ovirt10
rollupjs10
ethereum10
typescript-types10
typescripts10
ovp10
backend10
server10
server-side10
optim9
ethersjs9
Programming languages (23)
Github contributions (5)
ethereum-optimism/optimism
Mar 2021 - Jun 2022
Optimism is Ethereum, scaled.
Role in this project:
Backend Developer
Backend DeveloperContributions:285 reviews, 116 commits, 165 PRs in 1 year 3 months
Contributions summary:Liam primarily contributed to the `ethereum-optimism/optimism` repository by modifying test files related to the `OVM_CanonicalTransactionChain` contract, indicating a focus on the Layer 2 scaling solution's core logic. Their commits involved refactoring and debugging of tests, including adjustments to nuisance gas limits and the removal of bytecode hash emptying. The changes suggest a role in improving the stability and correctness of the Optimism platform.
rollupl2-scalingovmethereumblockchain
graphprotocol/indexer
Aug 2020 - Apr 2021
Graph Protocol indexer components and infrastructure
Role in this project:Back-end Developer
Back-end DeveloperContributions:43 commits, 1 PR in 8 months
Contributions summary:Liam primarily worked on the indexer service component, focusing on payment and channel management within The Graph Protocol ecosystem. Their contributions involved handling state channel messages, adding functionality for signing key management, and refactoring code related to channel interactions. They also made updates to incorporate allocation clients and integrated server-wallet database migrations. These changes suggest an emphasis on core backend logic and payment processing within the indexing infrastructure.
graph-protocolinfrastructuregraphindexer
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