John Kosinski
Chief Technology Officer at Hamza Labs LTD
Mobile, Alabama, United States
Summary
👤
Senior🎓
Top SchoolJohn Kosinski is a Chief Technology Officer with 25+ years of experience designing high-constraint systems across blockchain, trading infrastructure, embedded IoT, and C++ backends. He combines hands-on engineering—porting SDKs, authoring secure smart contracts, and building ESP32 prototypes—with strategic architecture, recently launching Hamza Labs’ DeCom marketplace and pioneering on-chain US Treasury bond funds. Comfortable leading R&D and founding elite remote teams, he moves quickly from prototype to race-to-market wins while maintaining rigorous testing and security practices. His background spans finance (Morgan Stanley), enterprise C++ engines (Alteryx), and consumer IoT, giving him a rare blend of low-level systems expertise and web3 product instincts. Based in Mobile, Alabama, he also has a longstanding interest in integrating gaming and blockchain, having bridged Unity with token systems and .NET SDKs for community use. Collected experience in both embedded constraints and distributed ledger design makes him adept at turning auditable, high-assurance concepts into production realities.
10 years of coding experience
13 years of employment as a software developer
M.S Computer Science Computer Science, M.S Computer Science Computer Science at University of Delaware
English, Thai
Stackoverflow
31reputation
13kreached
1answer
0questions
Github Skills (30)
plsql9
contract8
erc11558
solidity8
erc7217
ethereum7
blockchain7
smart-contracts7
erc206
oracle6
unity3d6
staking6
nft6
tensorflow6
machine-learning6
Programming languages (5)
Github contributions (5)
jrkosinski/oracle-example
Aug 2018 - Oct 2018
Example of an ethereum smart contract with oracle
Contributions:46 commits, 34 pushes, 4 branches in 2 months
smart-contractethereumcontractblockchainsolidity
jrkosinski/FutronixAlexa
Mar 2017 - Nov 2017
Contributions:61 commits, 54 pushes, 1 branch in 7 months
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