Alex Miller
Software Engineer at Unit 410
Austin, Texas, United States
Summary
🤩
RockstarAlex Miller is a software engineer with 12 years of experience in blockchain, embedded firmware, and full‑stack JavaScript development, currently based in Austin. As Co‑founder and CTO of GridPlus he led development of the Lattice1 hardware wallet—owning embedded C firmware, a JavaScript SDK, and React integrations—and later continued building blockchain infrastructure at ConsenSys and Unit 410. He contributes to notable open‑source Ethereum tooling, enhancing Truffle’s HDWalletProvider to support multiple mnemonics, account signing, and hooked wallet subproviders. Alex blends low‑level firmware expertise with practical web3 engineering, enabling secure key management across hardware and software stacks. Colleagues describe him as an operator who moves from prototypes to production while keeping an eye on developer ergonomics and security.
12 years of coding experience
8 years of employment as a software developer
Github Skills (10)
truffle10
smart-contracts10
javascript10
solidity10
web3js10
ethereum10
blockchain10
application-framework9
app-framework9
web-framework9
Programming languages (17)
Github contributions (5)
trufflesuite/truffle
Aug 2017 - Dec 2017
:warning: The Truffle Suite is being sunset. For information on ongoing support, migration options and FAQs, visit the Consensys blog. Thank you for all the support over the years.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 commits, 1 PR, 2 issues in 4 months
Contributions summary:Alex focused on enhancing the `HDWalletProvider` functionality within the Truffle framework. They implemented features to support multiple mnemonics, allowing for multiple accounts, and added the `HookedWalletSubprovider` and `signTransaction` functionality. The contributions centered around improving the provider's ability to interact with Ethereum networks, enabling users to manage and sign transactions with multiple accounts in a more flexible and secure way. The user also made iterative changes and fixes, debugging and testing the newly implemented features.
developingethereumsmart-contract-toolsjavascriptblockchain
GridPlus/eth-lattice-keyring
Apr 2020 - Jun 2022
Contributions:53 reviews, 128 commits, 33 PRs in 2 years 2 months
keyring
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.