Company Info for cantina.xyz | IcebreakerMembers
### Vires in Numeris ###
• 10 years of experience in Data & AI for the banking & tech industries, and 5 years in Smart Contract development on EVM; comprehensive knowledge of Frequentist & Bayesian Statistics, Causal Inference, Machine Learning & Deep Learning, plus expertise in Blockchain, EVM and dAPPs.
• Proficient in Python ML/AI toolkits stack for modeling, AWS CDK for pipeline implementation & operation; Solidity, JS, Go, Foundry and Hardhat for dAPP development
• Strong project management and communication skills: led agile teams to successfully develop large-scale projects that incorporated consulting, modeling and end to end implementation tasks
• Lifelong Learner; A cheerful disposition; Result-oriented; Experienced in supporting senior leaderships 
Quick bio:
22 years old. Designed in Lviv, Ukraine. Assembled worldwide. I speak English, Ukrainian, Russian, a little Spanish and Portuguese.
I'm pro-FOSS, privacy, and love to share things that I've learned.
Some highlights of my experience:
- Smart contracts security, 2 years. I'm an active participant on Cantina and Code4rena. I've found about 5 high and 15 medium issues in 10 public contests. Including 1 issue in the zkSync 1.1M contest which earned me 12k USD, and top 2 in Soon SVM with multiple issues and 7k of rewards.
- Web2 security. A while before my first web3 job, I studied web and browser security from various black hat forums to get insights into how they think, what they usually do, and how things work behind the scenes: carding, bruteforce, reverse engineering (I deobfuscated various JS scripts and Android apps).
- Educational writing. I have a couple of article series on Github, where I share my knowledge about ZK, Ethereum, tooling, and security.
- Solidity development. I created several smart contract systems, among them the Light Towers game (live on Polygon).
- Crypto native since 2017. I started with small activities like early airdrops (with Google Forms).
- I'd spent 3 years studying computer networks at a technical college, which gave me a solid foundation for future growth and an unforgettable life experience (iykyk). 
Joseph Greenstein currently serves as the Director of Business Development at Global Community Capital, Institutional GTM Lead at Spearbit Labs—a leading Web3 Cyber Security Company, and is the Founder of Joey LG Enterprises LLC, an entity including various Venture, Web3, Real Estate, and Angel investments as well as an Independent Freight Brokerage Agency operating under Experior Global.
Joseph is an experienced Investor within DeFi, GameFi, NFTs, and other early-stage crypto investment vehicles. In addition to that, Joseph has made several successful early-stage equity investments such as Databuoy, Alfred Intelligent, and Amaze Technologies. He is also a Limited Partner to Arca’s Digital Asset Fund as well as Arca’s Endeavor Fund. Lastly, Joseph has allocated and closed on several high-yielding multifamily real estate deals.
His background includes serving as a trusted Real Estate Advisor in New York City representing residential and commercial owners when buying, selling, and seeking qualified tenants for rent. Joseph has also made a name for himself in the fashion industry as a model. He has been featured in various international campaigns and publications such as Versace, Moschino, Steve Madden, Porter Magazine, V Magazine, Fantastics Magazine, Wall Street Journal Magazine, Forbes, and more.
Adding to his diversity of skills and interests, Joseph has a passion for multigenerational communication issues explored through media and entertainment. Joey loves spending quality time with his family and friends, a good steak dinner, and a tough evening CrossFit class! 
