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Stewart Jelani, Hanif

@stewartjelanihanif

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Blockchain engineer specializing in smart contract architecture, DApps, and full-stack crypto integrations.

United States

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What I'm looking for

I seek a hands-on engineering role in a fast-paced crypto or DeFi team where I can design smart contracts, build DApps, and drive product growth while collaborating cross-functionally.

I am a blockchain engineer with deep experience designing smart contract architecture and building decentralized applications across multiple chains. I have delivered measurable improvements in transaction efficiency, user engagement, and platform usage through hands-on development and cross-functional collaboration.

My work spans smart contract design (Solidity, Rust, Anchor), frontend integration (React, Next.js, Vue.js) and backend/cloud tooling (Node.js, PostgreSQL, AWS, Docker). Notable achievements include boosting transaction efficiency and reward distribution, reducing system errors, and increasing trading volume through smart contract and tooling improvements.

I thrive in fast-moving crypto environments, quickly learning new technologies and driving product delivery with clear communication and practical engineering solutions that align with product and community goals.

Experience

Work history, roles, and key accomplishments

Smart Contract Architect

Aurory

Aug 2023 - May 2025 (1 year 9 months)

Designed and implemented Solana smart contract architecture, improving transaction efficiency by 25% and driving a 30% increase in engagement via a Mine-Together lottery incentive system.

Solidity Rust Solana Anchor Smart Contracts DeFi Web3.js

Smart Contract Developer

MakerDao

Sep 2022 - Jul 2023 (10 months)

Collaborated on Oasis team to improve platform functionality, reducing system errors by 15%, co-created EthTx.info to improve EVM transaction processing by 20%, and architected smart contracts/trading bots to increase trading volume by 10%.

Solidity Smart Contracts EVM Python Web3.js Transaction analysis

Smart Contract Developer

Yearn Finance

Mar 2020 - Aug 2022 (2 years 5 months)

Designed Yearn vault smart contracts increasing reward distribution efficiency by 35%, implemented NFT badges that improved engagement by 40%, and integrated Coordinape frontend with Web3 and MerkleTree reducing transaction errors by 15%.

Solidity Smart Contracts Web3.js Merkle Trees NFT Frontend DeFi JavaScript

Full Stack Developer

Scheme Engine Production

Mar 2018 - Feb 2020 (1 year 11 months)

Built a scalable office catering service, increasing customer satisfaction 50%; migrated Rails views to React reducing development time by 30% and implemented CircleCI CI/CD to cut deployment times by 40%.

React Rails PostgreSQL CI CD CircleCi