Tom J
Founder at FlowCrypt
Summary
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RockstarTom J is a founder and experienced software engineer with 12 years building startups and developer tooling, best known for founding FlowCrypt after co-founding BitOasis and Dil Mil. He combines hands-on backend engineering with product-level leadership, contributing to open-source bitcoin tooling such as pycoin where he improved multisig signing, error handling, and test coverage. Tom brings practical cryptography and payments experience, translating complex protocol work into reliable, production-ready systems. Based in the United States, he pairs entrepreneurial instincts with a developer’s attention to correctness and testability, often tackling subtle integration and edge-case fixes that improve long-term robustness.
12 years of coding experience
Github Skills (7)
bitcoin10
alt10
bitcoins10
python10
testing10
bip329
segwit8
Programming languages (17)
Github contributions (5)
richardkiss/pycoin
Apr 2015 - Sep 2015
Python-based Bitcoin and alt-coin utility library.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 4 PRs, 5 comments in 5 months
Contributions summary:Tom primarily focused on improving the `pycoin` library, particularly regarding Bitcoin and altcoin functionality. Their contributions include fixing import issues, enhancing error handling within the Insight service, and adding new tests. These changes involved modifying core code, as seen in the changes to `insight.py` and `ScriptMultisig.py`. Additionally, the user integrated tests for P2SH multisig signing, improving the library's functionality and reliability.
base58pythonaltbip32segwit
tomholub/coinbaseorders
Jan 2014 - Oct 2014
Contributions:117 commits in 9 months
coinbaseblockchaincryptocryptocurrencybitcoin
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