Development of an arbitration bot using Flash Loan (Solidity + Web3)

Cryptocurrency & Blockchain, Python — incorrectly specified categories?

16 USD

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I am looking for an experienced developer to create an automated arbitrage bot that works with Flash Loan (Aave, other pools) and interacts with smart contracts on Ethereum/BSC/Base. The goal of the bot is to exploit price differences between DEXs (Uniswap/SushiSwap/Curve/PancakeSwap, etc.) with profit in a single transaction.

🔧 What needs to be implemented:

Smart contract in Solidity:
- Obtaining flash-loan via Aave (or other platforms).
- Performing a chain of DEX trades (arbitrage path).
- Checking profitability and repaying the loan within one transaction.
- Security checks (reentrancy guard, tx.origin, require(), fallback protection, etc.).
Arbitrage logic:
- Ability to configure routes:
  - Example: Uniswap → SushiSwap → Curve.
- Calculating potential profit before execution.
- Ability to simulate on a forked network or using Hardhat/Foundry.
Backend / script:
- Web3.js / ethers.js (or web3.py).
- Monitoring blockchain and DEXs in real-time.
- Sending transaction upon detecting profitable chain.
- Selecting the best route.
(Optional): Simple frontend interface (React/Next.js):
- Parameter setup: loan size, token addresses.
- Display recent successful arbitrage operations.
- Testnet/live mode.

💡 What is required from you:

Experience in developing smart contracts in Solidity.
Knowledge of Aave, flash loan mechanism, and DEX protocols (Uniswap, Curve, SushiSwap, etc.).
Experience with Web3 and transaction optimization (gas, atomicity).
Ability to perform simulations and analyze profitability.

🗂 Example stack (optional but welcome):

Solidity + Hardhat / Foundry
Aave FlashLoanReceiverBase
Web3.js / Ethers.js
Infura / Alchemy / own RPC
React / Next.js (if frontend exists)
Ability to deploy on Sepolia/Testnet/Mainnet

Proposals 8 Rejected 1

Anastasiia Z.

20 0

Budget: 1000 UAH Deadline: 10 days

Hello!

We are the ITZeyz team. We have experience in creating complex Web3 solutions and can fully take on the implementation of your arbitrage bot — from smart contract to automated logic and simple interface.

Example:
https://freelancehunt.com/showcase/work/socky/1927347.html

We will be happy to discuss the details and offer the optimal option regarding budget and stages.

Best regards,
ITZeyz team

Andrii K.

0 0

Projects -
Rating -
Rating 304

Budget: 700 UAH Deadline: 5 days

Hello!

I specialize in developing arbitrage bots and smart contracts using Flash Loan (Aave, DyDx, etc.), as well as integrating with DEX protocols (Uniswap, SushiSwap, Curve, PancakeSwap, etc.).

🔹 What I can offer:
• Smart contract in Solidity for obtaining flash-loan and conducting arbitrage paths
• Security: reentrancy guard, require, fail-safes
• Backend with Web3.js / ethers.js: real monitoring, profit calculation, transaction sending
• Support for simulation (Hardhat, Foundry, forked mainnet)
• (Optional) Web interface with Next.js

⚙️ Tech stack: Solidity, Hardhat/Foundry, ethers.js, Aave, Infura/Alchemy, React

I have experience in gas optimization, atomic transactions, and testing on forked networks. Ready to discuss details and propose a phased implementation.

Mykhailo Pavlov

Winning proposal

60 0

Budget: 700 UAH Deadline: 22 days

Hello,

I am ready to help you create an arbitrage bot based on Flash Loan. I have experience developing smart contracts in Solidity, including interaction with Aave and DEX protocols such as Uniswap and SushiSwap. I have also handled the implementation of arbitrage logic, which will make your project efficient and profitable.

I can implement the necessary functions, including profitability checks and security measures in the smart contract. My experience with Web3.js and ethers.js will help me create a reliable backend for monitoring and executing trades in real-time. I also know how to run simulations on test networks, which will help optimize algorithms before deployment.

If needed, I can add a simple interface using React or Next.js so users can configure parameters and see operation results. My attention to detail and deep understanding of technologies will ensure high-quality implementation.

Roman Koval
Odessa, Ukraine

Projects -
Rating -
Rating 45

Development of an arbitration bot using Flash Loan (Solidity + Web3)

Anastasiia Z.

Andrii K.

Mykhailo Pavlov

Proposals concealed

Proposals are currently absent

Proposals concealed