Web3 DeFi Engineer: Solana & EVM
Budget / SalaryHourly project
TypeFreelance project
LocationRemote
Posted2 hours ago
I already have a detailed product blueprint and am using OpenAI Codex to accelerate development; what I need now is a hands-on engineer who can pair with me as a technical co-pilot. Together we’ll turn the Codex-generated scaffolding into a production-ready, full-stack DeFi application that works seamlessly across both Solana and EVM chains.
Core scope
• Wire Codex outputs into a clean, well-structured repository, refining or rewriting code where AI falls short.
• Build and connect key DeFi modules—wallet services, decentralized exchange interactions, trading terminals, and launchpad functionality—so they operate reliably on Solana (Rust/Anchor) and on EVM networks (Solidity/Hardhat).
• Handle cross-chain logic, RPC endpoints, and security hardening, ensuring transactions, signatures, and token standards behave identically on both ecosystems.
• Integrate front-end components (React/Next.js, Web3.js, Ethers.js) with the contract layer and automate tests and deployments (CI/CD, Foundry, Anchor test suite).
I’ll supply:
• The complete architectural blueprint, user flows, and UI mock-ups
• Access to Codex prompts we’ve been iterating on
• Staging nodes and API keys for Solana and major EVM networks
Acceptance criteria
1. Unified codebase passes automated unit & integration tests on both chains.
2. Wallet connect, swap, and launchpad transactions sign and settle successfully on at least one Solana devnet and one EVM testnet.
3. Front end fetches on-chain data in real time, with no critical console or lint errors.
If you have shipped cross-chain DeFi products before and are comfortable steering AI-generated code toward production quality, let’s move this from blueprint to mainnet.
Core scope
• Wire Codex outputs into a clean, well-structured repository, refining or rewriting code where AI falls short.
• Build and connect key DeFi modules—wallet services, decentralized exchange interactions, trading terminals, and launchpad functionality—so they operate reliably on Solana (Rust/Anchor) and on EVM networks (Solidity/Hardhat).
• Handle cross-chain logic, RPC endpoints, and security hardening, ensuring transactions, signatures, and token standards behave identically on both ecosystems.
• Integrate front-end components (React/Next.js, Web3.js, Ethers.js) with the contract layer and automate tests and deployments (CI/CD, Foundry, Anchor test suite).
I’ll supply:
• The complete architectural blueprint, user flows, and UI mock-ups
• Access to Codex prompts we’ve been iterating on
• Staging nodes and API keys for Solana and major EVM networks
Acceptance criteria
1. Unified codebase passes automated unit & integration tests on both chains.
2. Wallet connect, swap, and launchpad transactions sign and settle successfully on at least one Solana devnet and one EVM testnet.
3. Front end fetches on-chain data in real time, with no critical console or lint errors.
If you have shipped cross-chain DeFi products before and are comfortable steering AI-generated code toward production quality, let’s move this from blueprint to mainnet.
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