Roman Mandeleil
Captain at Self-employed
Houston, Texas, United States
Summary
🤩
Rockstar🎓
Top SchoolRoman Mandeleil is a pragmatic software engineer with 12 years of experience who has balanced deep backend and blockchain engineering with an unconventional transition into professional aviation. He led the ethereumj open-source project, contributing core Ethereum Virtual Machine features and stability improvements to a widely referenced Java implementation of the protocol. Earlier roles at IBM Labs and multiple J2EE-focused positions demonstrate strong enterprise-grade backend and architecture skills, anchored by a Computer Science degree from The Open University of Israel. Currently based in Houston, he splits time between flying—serving as a Captain at Cape Air and a flight instructor—and ongoing technical interests, bringing a disciplined, safety-first mindset from aviation into system design and debugging. Colleagues can expect a hands-on engineer who pairs low-level protocol expertise with operational rigor and real-world leadership.
12 years of coding experience
9 years of employment as a software developer
MamramBachelor's degree, Computer Science, Bachelor's degree, Computer Science at The Open University of Israel
Stackoverflow
306reputation
15kreached
2answers
8questions
Github Skills (26)
evm10
virtual-machine10
chain10
java10
javas10
ethereum10
blockchain10
low-level-programming9
bytecode8
testing8
algorithm7
algorithms7
data-structure7
cryptography7
data-structures7
Programming languages (9)
Github contributions (5)
ethereum/ethereumj
May 2014 - Apr 2017
DEPRECATED! Java implementation of the Ethereum yellowpaper. For JSON-RPC and other client features check Ethereum Harmony
Role in this project:
Back-end Developer & Blockchain Engineer
Back-end Developer & Blockchain EngineerContributions:1012 commits, 102 PRs, 371 pushes in 2 years 11 months
Contributions summary:Roman's contributions focused on implementing core aspects of an Ethereum Virtual Machine (EVM) and related blockchain functionalities. They were involved in developing features for contract creation and execution, including modifying the code for handling various operations (e.g., arithmetic, memory management, block information). The user's work extended to enhancing the VM with functionalities such as logging, and they also addressed bugs. These contributions were crucial for enhancing the performance and stability of the EVM.
rpcethereumharmonyjson-rpcjava
ether-camp/ethereum-testing-reference
Jun 2016 - Aug 2016
Contributions:66 commits, 43 pushes, 2 branches in 1 month
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.