Ruben De Vries
Chief Technology Officer at Provable Labs
Randstad, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolRuben De Vries is a seasoned CTO and hands-on engineering leader with 15+ years building high-throughput, secure Bitcoin infrastructure and developer platforms. He co-founded and led Blocktrail/BTC.com’s engineering efforts, designing wallet and explorer systems that moved and stored hundreds of millions in bitcoin monthly while scaling small teams into robust organizations. A pragmatic problem-solver who thrives under pressure, Ruben pairs mission-critical delivery with disciplined engineering—writing thorough, tested code when it matters and taking pragmatic shortcuts to meet deadlines. He’s an active open-source contributor across prominent Bitcoin projects (bitcoinjs-lib, bitcore, bitcoin-php) and has deep protocol-level expertise in multisig, transaction signing, and mempool optimization. Equally comfortable across languages and stacks (Go, Python, PHP, JS), he brings a rare combination of crypto protocol depth, production ops experience, and product-focused engineering judgment.
15 years of coding experience
10 years of employment as a software developer
Grafimedia Technologie, Web & Mobile, Bachelor of Information and Communication Technology, Grafimedia Technologie, Web & Mobile, Bachelor of Information and Communication Technology at Hogeschool RotterdamCertificate, PHP5.3, Certificate, PHP5.3 at Zend
Github Skills (59)
unit-testing10
bip3210
transaction10
javascript10
sqlite10
back-end-development10
world-of-warcraft10
python10
api-design10
routers10
annotations10
analyzer10
testing10
router10
bitcoin10
Programming languages (22)
Github contributions (5)
CounterpartyXCP/counterparty-core
Nov 2015 - Aug 2017
Counterparty Protocol Reference Implementation
Role in this project:
Back-end Developer
Back-end DeveloperContributions:203 commits, 105 PRs, 43 pushes in 1 year 9 months
Contributions summary:Ruben primarily focused on improving the back-end functionality of the Counterparty core implementation. Their contributions included optimizing the mempool handling by caching unconfirmed transactions and providing a method for fetching them on demand. The user also enhanced the logging capabilities by adding a module-level logging filter and adding time stamps to the log format. In addition, the user contributed by correcting and improving code within the `addrindex.py` module.
ethereumblockchaincounterpartyreference-implementation
Bit-Wasp/bitcoin-php
Feb 2015 - Nov 2017
Bitcoin implementation in PHP
Role in this project:Back-end Developer
Back-end DeveloperContributions:2 reviews, 51 commits, 22 PRs in 2 years 8 months
Contributions summary:Ruben primarily focused on refactoring and improving the codebase. Their contributions involved updating method signatures and implementing interface-based usage for improved code structure. Further enhancements included fixing issues related to miner functionality, specifically concerning the addition of inputs and outputs, and the introduction of example mining on the testnet. Moreover, they updated the codebase with fixes to transaction input/output serialization and the addition of new multisig features.
bitcoinphpelectrumbip32transaction
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