Alex Atallah is a founder and seasoned software leader with 14 years building marketplace and platform products at the intersection of blockchain and AI. As Co-founder of OpenSea and now CEO of OpenRouter—the first large-scale LLM router and marketplace—he combines product vision with hands-on engineering across full-stack and smart-contract code. His open-source contributions include architecting ERC-1155 support and sale-flow tooling for widely used OpenSea example repos, reflecting deep experience with NFT standards and developer integrations. Earlier roles span startups and enterprise deployments—from building data-focused apps at Palantir to scaling polling infrastructure as CTO at Whatsgoodly—showing a pattern of shipping pragmatic, data-driven systems. Based in New York, he pairs Stanford computer science training with YC experience and a knack for turning research-grade ideas into developer-friendly products. An underrated strength is his ability to move between low-level protocol design and high-level product ecosystems, making him effective at both technical strategy and execution.
14 years of coding experience
10 years of employment as a software developer
Y Combinator
Bing Overseas Study Program Cyber/Computer Forensics and Counterterrorism, Bing Overseas Study Program Cyber/Computer Forensics and Counterterrorism at University of Oxford
High School, High School at Fairview High School
Bachelor of Science (B.S.) Computer Science, Bachelor of Science (B.S.) Computer Science at Stanford University
Example semi-fungible collectible, to demonstrate OpenSea integration for an ERC-1155 contract
Role in this project:
Backend Developer
Contributions:1 review, 68 commits, 5 PRs in 2 years 5 months
Contributions summary:Alex restructured the code to support ERC-1155 tokens, introducing new smart contracts and modifying existing ones. They added create and mint functionality to the ERC1155Token, implemented naming conventions and the token URI methods. Furthermore, they worked on creating and modifying factory and lootbox contracts, contributing to the overall ERC-1155 implementation.
Example non-fungible collectible, to demonstrate OpenSea integration
Role in this project:
Full-stack Developer
Contributions:5 reviews, 22 commits, 8 PRs in 3 years 4 months
Contributions summary:Alex primarily worked on modifying and improving the `sell.js` and `initial_sale.js` scripts, which likely handle the creation of sell orders for NFTs on the OpenSea platform. They updated the scripts to utilize new functions such as `createFactorySellOrders` and incorporated an API key, suggesting work focused on integrating and streamlining the NFT sale process. Furthermore, the user addressed gas-related issues and adjusted truffle settings, indicating contributions towards optimizing the deployment and execution of smart contracts related to the project.
fungibleopenseacollectible
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