Smart Contract Developer For AI-powered DeFi platform

Location: Remote

Engagement: Contract

Compensation:$55~$85

About ZedAI

ZedAI is a software company focused on AI and blockchain. We help

startups and enterprises build smarter products and grow faster.

ZedAI is building next-generation DeFi infrastructure that combines

on-chain token mechanics, yield protocols, and AI-driven trading

analytics in one non-custodial platform.

Our live product, ZedX, is deployed on Polygon Mainnet and includes a

utility token, staking contract, perpetual futures trading, and token

swap functionality. AI-powered capabilities are actively in

development.

We are looking for a skilled Smart Contract Developer to own and

expand the on-chain layer of the platform.

What You Will Do

• Design and implement Solidity smart contracts that extend our token

and staking infrastructure, including timelocked staking tiers, reward

distribution mechanisms, and governance features.

• Audit and strengthen existing contracts, including ZedxToken and

ZedxStaking, against edge cases, economic exploits, and

upgrade-related risks.

• Write comprehensive Hardhat test suites covering standard user

flows, edge cases, and adversarial scenarios.

• Work closely with the backend team to ensure contract ABIs support

server-side eth_call reads and event indexing.

• Support deployments across Polygon, Arbitrum, Base, and Ethereum

Sepolia.

• Contribute to tokenomics design, including supply schedules, APR

curves, and reward pool sustainability.

Required Qualifications

• At least 2 years of production Solidity experience, including

contracts deployed and verified on mainnet.

• Strong knowledge of OpenZeppelin libraries, including ERC20,

Ownable, Pausable, ReentrancyGuard, and SafeERC20.

• Solid understanding of EVM fundamentals, including storage layout,

gas optimization, function selectors, and event encoding.

• Experience writing Hardhat tests with ethers.js or viem, including

time-based testing with evm_increaseTime and fork testing.

• Ability to identify and reason about smart contract attack vectors,

including reentrancy, flash-loan manipulation, front-running, and

precision loss in reward calculations.

Preferred Qualifications

• Experience designing staking or yield protocols, such as fixed APR,

ve-tokenomics, or reward-per-share models.

• Familiarity with Uniswap V2 or V3, including routing, liquidity

provisioning, and pool price reads.

• Experience with multi-chain deployments and bridge security

considerations.

• Understanding of account abstraction, ERC-4337, or intent-based

architectures.

• Interest in AI and DeFi, including on-chain data feeds,

agent-triggered transactions, or ML-informed parameter tuning.

Tech Stack

• Smart Contracts: Solidity 0.8.24, Hardhat, OpenZeppelin 5.x
• Testing: Hardhat, Mocha, Chai, ethers.js |
• Deployment Targets: Polygon Mainnet, Arbitrum, Base, Ethereum
• Backend Integration: Node.js, ethers.js Interface, eth_call
• Frontend Context: viem, Next.js, TypeScript

Why Join ZedAI

• Work on contracts already deployed on Polygon Mainnet and

contribute directly to production systems.

• Build at the intersection of DeFi infrastructure and AI-driven

financial products.

• Join a focused team where your smart contract decisions will

directly influence product design and token economics.

• Help deliver a clear roadmap that includes timelocked staking,

governance, cross-chain liquidity, and AI-triggered rebalancing.

How to Apply

Please send the following to here

• Two or more mainnet contract addresses you authored, with a short

description of each.

• One paragraph describing a non-trivial bug or economic

vulnerability you identified and how you resolved it.

• A GitHub profile or code sample that includes a Hardhat test suite

you wrote.

Applications without on-chain work samples will not be considered.