Haythem Sellami
Senior Smart Contract Engineer at Category Labs
Dubai, Dubai, United Arab Emirates
Summary
👤
Senior🎓
Top SchoolHaythem Sellami is a Senior Smart Contract Engineer with over 6 years focused on production-grade DeFi protocols and a decade of overall engineering experience. He has designed and shipped lending, AMM, derivatives, and yield-allocation systems at teams like Opyn and Euler Labs, including novel products such as Gamma Protocol, Squeeth, and Euler Earn. Comfortable across Solidity, EVM internals, Rust, and backend tooling, he also builds liquidation/oracle bots and monitoring infrastructure using Node.js, Python and cloud services. He has led internal security audits and code reviews, and contributed backend integrations for well-known community projects like DeFi Pulse adapters. Based in Dubai, Haythem pairs deep protocol security instincts with practical integration experience across DEX aggregators and multi-L2 deployments. Colleagues rely on him to translate complex financial primitives into auditable, production-ready smart contract systems.
10 years of coding experience
8 years of employment as a software developer
Bachelor of Technology - BTech Computer Science, Bachelor of Technology - BTech Computer Science at Institut supérieur des études technologiques de Nabeul
French, English
Github Skills (12)
apim10
javascript10
f10
api10
bignumber9
bignum9
bigjs9
bignumbers9
exchange8
crypto8
cryptocurrency8
cryptocurrencies8
Programming languages (16)
Github contributions (5)
ConcourseOpen/DeFi-Pulse-Adapters
Apr 2020 - Jan 2021
DeFi Pulse Adapters - Official Repository so DeFi projects can keep their metrics up to date on DeFi Pulse
Role in this project:
Back-end Developer
Back-end DeveloperContributions:22 commits, 5 PRs in 9 months
Contributions summary:Haythem primarily contributed to the development of adapters for the DeFi Pulse project. Their work focused on integrating various DeFi protocols like Opyn, modifying existing adapters and implementing new data fetching logic. They made updates to the project, including start times and performed multiple iterations to get the adapters working. The contributions included refactoring, updating dependencies, and integrating API calls to fetch relevant metrics for different DeFi protocols.
keepblockchainadapterscryptocurrency-exchangespulse
haythem96/bc-moloch-fork
Apr 2019 - Sep 2019
:peach: A curved Moloch DAO :peach: Experimenting a bonding curve token with Moloch DAO instead of WETH
Contributions:48 commits, 10 PRs, 34 pushes in 4 months
peachexperimentingmolochethereumtoken
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