Flash Loan Contract for Arbitrage

[Mkalbani]

Location: contracts/flash_loan
Labels: smart-contract, soroban, defi, advanced
Estimated Time: 9 hours
Difficulty: Hard

Description

Enable flash loans allowing users to borrow tokens without collateral for single-transaction arbitrage and liquidations.

Tasks

• Design flash loan pool structure
• Implement borrow function with callback
• Add repayment verification in same transaction
• Create fee calculation (0.1-0.3%)
• Implement pool liquidity management
• Add reentrancy protection
• Create flash loan analytics
• Write flash loan tests
• Add maximum loan limits
• Implement emergency pause

Acceptance Criteria

• Loans issued without collateral
• Repayment verified in same transaction
• Fees collected correctly
• Reentrancy prevented
• Analytics track usage
• Contract deployed to testnet

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[floxxih]

@floxxih has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I’m a full-stack engineer with experience building and integrating Soroban smart contracts with modern frontend applications. I’m comfortable working across both backend logic and UI layers, ensuring clean architecture, secure contract interactions, and smooth user experience. I write well-tested, maintainable code and communicate progress clearly throughout the development process. I can review the issue immediately and deliver a working solution within 24–48 hours. I’m confident I can resolve this efficiently and contribute high-quality improvements to the project.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @floxxih to this issue.

[pharuq411]

@pharuq411 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I will like to apply for this issue because of I have experience

ℹ️ Repo Maintainers: To accept this application, review their application or assign @pharuq411 to this issue.

[Amas-01]

@Amas-01 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I’m keen to work on #91 Flash Loan Contract for Arbitrage.
Happy to build a secure, production-ready flash loan pool on Soroban: pool structure + liquidity management, borrow function with receiver callback, same-tx repayment verification + fee collection (0.1–0.3%), reentrancy guards, max loan limits per token/pool, emergency pause mechanism, usage analytics/events, comprehensive tests (happy paths, failures, edge cases, reverts), plus deployment guidance to testnet — fully meeting all acceptance criteria for collateral-free, atomic arbitrage/liquidation support.
Excited to dive deep into Soroban/Rust for this advanced DeFi primitive and deliver clean, audited-mindset code in contracts/flash_loan.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Amas-01 to this issue.

[ExcelDsigN-tech]

@ExcelDsigN-tech has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hello, I’m a smart contract developer with hands-on experience building with Rust and Soroban for smart contract development.

I focus on writing clear, maintainable code and making sure features work as expected end to end, not just in isolation. I communicate progress regularly and keep things transparent as I work. I’m confident I can complete this task within an ETA of 8 hours

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ExcelDsigN-tech to this issue.

[drips-wave]

Congratulations, @floxxih! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @floxxih: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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