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I want a production-ready flash-loan arbitrage bot that operates on Ethereum and combines Aave flash loans with price opportunities across Uniswap and Sushiswap. The core workflow is: • Pull live on-chain and off-chain prices, detect profitable spreads in milliseconds. • Instantly launch an Aave flash loan, route the borrowed amount through Uniswap and Sushiswap, and repay the loan plus fees within the same block. • Optimise gas by simulating each bundle and selecting the lowest-cost route before submission. Key requirements • Real-time price monitoring with sub-second latency (I’m happy to run a dedicated node or use WebSocket endpoints if that helps). • Fully automated trade execution from detection through settlement, no manual clicks. • Dynamic transaction-fee optimisation—use gas price oracles and settle only when the net profit after gas is positive. • Written in Solidity for the on-chain contract and either Hardhat or Foundry for testing; TypeScript/[login to view URL] for the off-chain listener is preferred. • Clear README plus hard-fork mainnet-fork tests showing at least one successful arbitrage cycle. Acceptance criteria 1. Deployable smart contract that requests and repays Aave flash loans in the same transaction. 2. Off-chain script/service that listens for target spreads, runs simulation, and submits bundled tx. 3. Hardhat (or Foundry) test suite demonstrating profit after gas in a mainnet-fork. 4. Clean, commented code and concise setup instructions that let me reproduce a demo on my machine. Once delivered, I’ll run the bot on my own keys and infrastructure, so environment variables for private keys, RPCs, and Aave/DEX addresses must be clearly documented.
Project ID: 40542536
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96 freelancers are bidding on average $2,035 USD for this job

Hi — Elias here from Miami. I see you're looking to develop a production-ready flash loan arbitrage bot for Ethereum, specifically utilizing Aave. The goal is to create a robust solution that can efficiently identify and execute arbitrage opportunities. What usually matters most here is the bot's reliability and speed. A common issue in systems like this is ensuring the bot handles real-time data feeds and responds quickly enough to capitalize on fleeting opportunities. The tricky part is managing the intricacies of smart contracts and ensuring they interact seamlessly with various DeFi protocols. My approach would involve structuring the bot with a focus on clear state management and error handling. I’d build a modular system that allows for easy updates and optimizations, ensuring it adapts to evolving market conditions. My experience includes building similar dApps that require high-frequency transactions and integrations with various liquidity providers. A few questions to better understand the scope: Q1 – What specific user roles and permissions do you envision for the bot? Q2 – Are there particular exchanges or liquidity pools you want to prioritize? Q3 – How do you plan to handle potential transaction failures or slippage? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$2,000 USD in 10 days
8.5
8.5

I can build the Ethereum flash-loan arbitrage stack with clear separation between the Solidity contract, off-chain monitor, simulations, and deployment docs. For this type of bot, the important part is proving safe execution on a mainnet fork and only submitting when profit after gas/fees is positive. My approach would be to implement the Aave flash-loan contract, Uniswap/Sushiswap routing calls, and a TypeScript/ethers listener that watches price sources, simulates candidate routes, applies gas/profit thresholds, and submits only valid transactions. Private keys, RPC endpoints, and contract addresses would stay in environment config. Focus areas: - Solidity contract with access controls/events and Aave repay guarantees - Hardhat or Foundry mainnet-fork tests with a reproducible demo cycle - sub-second WebSocket/off-chain price monitoring - gas oracle/profit checks before submission - README, deployment scripts, and security notes I can deliver this as a tested repo with setup steps you can run on your own infrastructure.
$3,000 USD in 21 days
7.5
7.5

Hello! We can build a production-ready Ethereum arbitrage bot for this workflow. 1. Do you already have the target Aave, Uniswap, and Sushiswap addresses you want to use? 2. Which part should we prioritize first: the on-chain contract or the off-chain listener? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!
$2,250 USD in 7 days
6.7
6.7

As an experienced developer in Python web automation, Blockchain and JavaScript, I see an ideal fit to deliver a sturdy Ethereum flash-loan arbitrage bot that operates on Ethereum and takes full advantage of Aave flash loans with price opportunities across Uniswap and Sushiswap. With over 13 years of experience, I bring a blend of skills ranging from Web3 development (Solidity, Rust, Hardhat, Foundry) to Automated Trade Execution that this project demands. By entrusting this project to me, you gain access to both a comprehensive automated system and detailed documentation for easy adaptability. You'll have clean code with concise setup instructions that allow you to reproduce demos on your machine seamlessly. And since you will run the bot on your keys post-delivery, I'll ensure crystal-clear documentation of environment variables for private keys, RPCs and Aave/DEX addresses. Good luck choosing the right fit; Should you favor my skills for this project, we can get started quickly and build something extraordinary together!
$1,500 USD in 3 days
6.5
6.5

Hi there, I see you're looking for a flash-loan arbitrage bot that effectively combines Aave loans with price opportunities on Uniswap and Sushiswap. My approach would involve creating a system that monitors prices in real-time, detects profitable spreads, and automates the entire trading process, ensuring it all happens within the same block. With 4+ years of experience in Solidity and smart contracts, I can build a deployable contract that handles Aave loans efficiently while optimizing gas costs. I’ll ensure the off-chain listener effectively simulates trades before execution, and the code will be well-commented for easy understanding. To ensure everything runs smoothly, I'll include clear documentation for setting up your environment. Just to clarify, how frequently do you expect the bot to monitor price changes, and are there specific thresholds you have in mind for triggering trades? Best regards, Arslan Shahid
$1,500 USD in 21 days
5.8
5.8

I am fully capable of building your production-ready flash loan arbitrage bot. I will implement a robust Solidity contract for Aave integration and a high-performance TypeScript off-chain listener that handles price monitoring and gas-optimized bundle submission via Flashbots (or similar). I will provide a complete Foundry/Hardhat environment with mainnet-fork tests to demonstrate profitable cycles before you ever go live. You will receive fully documented code with secure, modular architecture for your private infrastructure. To ensure sub-second latency, are you planning to use a private RPC provider like Flashbots Protect or Alchemy's Enhanced APIs, or should I integrate a local Geth/Erigon node solution for the listener?
$1,500 USD in 2 days
5.9
5.9

Most Uniswap/Sushi arb that's visible through a standard RPC node has already been claimed or front-run before your tx lands - the profitable bots skip the public mempool entirely and bundle through Flashbots or private relays. That's the real infrastructure question here, not the Solidity. I'd build this as a reproducible execution framework: the contract handles the Aave V3 flash loan, routes through Uniswap V2/V3 and SushiSwap with configurable slippage and min-profit thresholds, and reverts atomically if the trade doesn't clear costs. The off-chain TypeScript service subscribes to price feeds via WebSocket, simulates the cycle locally before submitting (gas estimate included), and keeps the private relay integration as a config option so you can switch between public RPC and Flashbots depending on your setup. The forked-mainnet test suite is the honest part of the deliverable. I'll pin a block where a spread existed and prove the contract captures it after gas. Real conditions differ - liquidity, latency, MEV competition - so the tests prove the mechanism is sound, not that live arb will be profitable. That depends on your RPC speed and whether you route private. This is an indicative estimate from the brief; I'll give you a firm quote once the scope is locked. M1: Smart contract (Aave flash loan, Uniswap V2/V3 + Sushi routing, atomic revert on loss), $600, 3d. M2: Off-chain TypeScript service (WebSocket feeds, opportunity detection, gas-aware pre-submission check), $500, 3d. M3: Simulation layer (profit calculator, configurable min-profit and slippage thresholds, dry-run mode), $600, 3d. M4: Hardhat/Foundry forked-mainnet test suite (proves profitable cycle after gas at a pinned block), $700, 3d. M5: Deployment package (env setup, RPC and wallet config, Flashbots relay option, README), $600, 2d. Are you targeting V2 or V3 pools primarily, and do you have a Flashbots relay account or are you starting with public RPC?
$3,000 USD in 14 days
5.6
5.6

Hey, I’m beyond excited to take this on! I recently wrapped up a similar project with good results. Drawing from my experience in PHP, JavaScript, Adobe Flash, ActionScript, Blockchain, Ethereum, Solidity, Smart Contracts, I’m ready to dive into your project. Please come over chat and discuss your requirement in a detailed way. Cheers, Vishal Maharaj
$2,000 USD in 20 days
5.8
5.8

Hello I’m excited about building your flash-loan arbitrage bot leveraging Aave, Uniswap, and Sushiswap on Ethereum. I understand you need a production-ready system combining sub-second price monitoring, instant flash loan execution, and gas-optimized routing—all automated end-to-end. Here’s how I’ll tackle it: I have deep expertise in Solidity smart contracts and off-chain scripting with TypeScript/ethers.js. I’ll create a robust contract to handle Aave flash loans with integrated Uniswap/Sushiswap swaps, ensuring repayment within the same block. Off-chain, I’ll build a real-time listener using WebSocket endpoints to detect spreads quickly, simulate transactions to pick the cheapest route, and execute only profitable trades after factoring gas fees via oracles. All will be tested with Hardhat on a mainnet fork to demonstrate successful arbitrage cycles. Clear documentation and environment variable setup will make deployment seamless for you. Could you share which RPC providers or nodes you prefer for live data streaming? Best regards, AbdulHamid
$1,500 USD in 7 days
4.7
4.7

Hi, Your Ethereum Flash Loan Arbitrage Bot project is impressive and exactly the kind of challenge that excites me. Combining Solidity smart contracts with real-time price monitoring via JavaScript-based off-chain listeners aligns perfectly with my expertise. I understand the critical need to simulate gas costs and optimize fees dynamically to ensure profitability, and I am comfortable writing thorough tests using Hardhat or Foundry to prove the bot’s efficiency in a mainnet-fork environment. I will deliver clean, well-commented code with detailed setup instructions for seamless deployment using environment variables for keys and addresses. Expect a robust, fully automated solution that listens to price arbitrage opportunities across Uniswap and Sushiswap instantly and safely executes flash loans with Aave within a single transaction. Looking forward to discussing your timeline and starting on a functional demo quickly. Would you prefer using a dedicated node or WebSocket endpoints for real-time price data to maximize latency performance? Thanks,
$2,500 USD in 13 days
4.3
4.3

Hello. I understand you are looking for a production ready flash loan arbitrage bot on Ethereum that pairs Aave flash loans with price spreads across Uniswap and Sushiswap, detecting opportunities in milliseconds and settling the borrow, route, and repayment within a single block. What stands out is your focus on full automation from detection through settlement, with gas aware simulation that only fires when net profit after fees stays positive. Base on my experience, the strength of bundling everything atomically is that the flash loan and repayment live in one transaction, so a route that turns unprofitable simply reverts and risk stays contained. Where these builds tend to slip is when execution ignores the mempool, since a profitable spread can be front run before it lands, so I would lean toward private relay submission and pre submission simulation to protect each bundle. Compared with generic sniping scripts or off the shelf bots, a purpose built setup tends to be far more reliable, since those rarely simulate gas per bundle or guarantee same block repayment, which is exactly where thin margins are won or lost. A couple of questions. Should the bot submit through a private relay to reduce MEV risk, or is public mempool fine for the demo. And do you want Uniswap V2, V3, or both, with single hop or multi hop routing first. Thank you.
$2,000 USD in 7 days
4.4
4.4

With my extensive background in Blockchain and Smart Contracts, I am confident that I am the ideal candidate for your Ethereum Flash Loan Arbitrage Bot project. My AI and automation skills combined with my proficiency in Python Trading Algo Development will be a great asset as we tackle the complex workflow you've specified. I'm particularly skilled in optimizing gas usage, dynamically simulating routes for cost-effectiveness, and instantaneously detecting profitable spreads with high precision, making me perfectly attuned to this project's core requirements. Moreover, my experience working with projects similar to yours means I have a deep understanding of utilizing Aave flash loans efficiently and navigating Uniswap and Sushiswap platforms for successful arbitrage. I've also had first-hand experience implementing real-time price monitoring systems with sub-second latency and fully automated trade execution mechanisms. To assure you of the effectiveness of my solution, I will provide detailed tests demonstrating the profit after gas deduction using either Hardhat or Foundry along with a deployable smart contract that makes and repays Aave flash loans within the same transaction. Additionally, you can expect a well-commented codebase alongside a concise yet complete README file to allow for easy reproducibility on your end. Let's collaborate on bringing this cutting-edge Ethereum Flash Loan Arbitrage Bot to life!
$2,000 USD in 5 days
4.8
4.8

Hi, this is Jorge from IT GLOBAL SOLUTION LLC (FL, United States). I’ve built Ethereum smart-contract systems and off-chain execution services similar to your idea, including atomic, flash-loan-style flows that combine on-chain routing with off-chain monitoring and simulation. Your focus on production-grade net-profit validation after gas is clear. I’ll implement a Solidity contract using Aave v3 flash loans. It will handle the Aave flash loan callback, pull the borrowed asset, compute swap routes across Uniswap V2/V3 and SushiSwap V2/V3 for your target pools, execute sequential swaps, and repay principal plus premium before finishing. To keep execution safe, I’ll enforce minimum-out thresholds to avoid unprofitable trades caused by state changes, and I’ll use role-gated entrypoints for authorized off-chain submissions. Off-chain, I’ll build a TypeScript service that ingests live pool prices via WebSocket or polling, computes spreads, and simulates the exact transaction against the latest block state using Hardhat/Foundry mainnet-fork tests. It will estimate base fee and gasUsed, apply a gas strategy, and submit only when expected net profit after the Aave premium and gas is positive. I’ll deliver maintainable code, a concise README, Git integration, and hard-fork tests showing at least one profitable cycle. Let’s connect and go over the details. Best, Jorge
$2,250 USD in 7 days
4.4
4.4

I am an experienced developer with a solid background in creating high-performance smart contracts and arbitrage bots on Ethereum. My expertise in Solidity, combined with proficiency in Hardhat and TypeScript, positions me well to deliver a robust flash-loan arbitrage bot that meets your specifications. I understand the importance of real-time price monitoring and dynamic transaction fee optimization, and I am committed to providing clean, well-documented code to ensure a seamless setup on your end. Let me leverage my skills to create a solution that capitalizes on price discrepancies and enhances your trading strategy.
$2,250 USD in 7 days
4.6
4.6

Hi there! Quick question: are you planning to handle MEV protection through private mempools like Flashbots Protect, or would you prefer the bot to submit directly to the public mempool? Regardless, this is definitely something that I feel confident delivering on, given my past experience. I would love to discuss your project further! Looking forward hearing from you. kind regards, Corné
$1,800 USD in 7 days
3.6
3.6

Hello, there! Thank you for the detailed breakdown. I understand you’re building a DayZ public PvP server and need full configuration and integration work across loot economy, progression balance, base building/raiding systems, events (airdrops, KOTH zones), survival tuning, vehicles (including helicopters), and multiple mod integrations to create a balanced, progression-driven PvP experience. In relation to your requirements, I would approach this by first auditing your current mod stack and server configuration to understand dependencies, conflicts, and existing economy settings. From there, I would restructure the loot economy and progression system to ensure balanced item distribution across military, civilian, and trader sources, followed by tuning trader inventories and pricing to support a stable in-game economy. Parallel to this, I would configure keycard rooms, KOTH zones, and event systems (airdrops, gas zones) to ensure consistent PvP engagement across high-value areas. For gameplay systems, I would adjust BBP+ raiding mechanics, base persistence, and storage behavior to align with your desired progression pacing, while also implementing QoL adjustments such as stamina, vehicle handling, and survival rate tuning. Finally, I would integrate and test all requested mods (dog tags, body bags, sellable items, spawn system, group system) to ensure stability and no script conflicts. Best regards.
$1,500 USD in 40 days
2.0
2.0

✅✅✅✅Hi, there.✅✅✅✅ Your project of developing a production-ready flash-loan arbitrage bot on Ethereum utilizing Aave, Uniswap, and Sushiswap excites me. I am confident that my expertise aligns perfectly with your requirements and can deliver the project within the specified timeframe with 100% accuracy. I would love to discuss this further and invite you to review my profile. This project involves creating a sophisticated bot that leverages flash loans for arbitrage opportunities across DeFi platforms, ensuring real-time price monitoring, automated trade execution, and gas fee optimization. I am well-equipped to provide not just the core functionality but also robust testing, clean code, and detailed documentation for seamless deployment. Looking forward to the opportunity to collaborate with you on this exciting project. Best Regards, Oleksandr.
$1,500 USD in 7 days
1.7
1.7

Hi, I hope you're doing well. I have carefully reviewed your project, Ethereum Flash Loan Arbitrage Bot, and I'm confident I can deliver a high quality solution tailored to your requirements. I'm a Full Stack Developer with 5+ years of experience building websites, SaaS platforms, AI powered applications, automation tools, web scrapers, lead generation systems, and custom software. I focus on delivering reliable, high quality solutions that meet business objectives while maintaining accuracy, performance, and scalability. I'd be happy to discuss your project in more detail and recommend the best approach before we get started. I look forward to working with you. Best regards, Adnan Hussain Full Stack Developer | Technical Fixes | AI Automation | Lead Generation & Extraction Expert | Websites Dev
$1,500 USD in 21 days
1.2
1.2

Hi there, I just read your posting. It sounds like you need an experienced software engineer who can help build, improve, and maintain a reliable solution using Solidity, Adobe Flash, Blockchain, PHP, JavaScript, ActionScript, Smart Contracts and Ethereum. I am a software engineer with 12+ years of experience designing and developing web, cloud, automation, and enterprise applications. I specialize in building scalable, maintainable, and production-ready solutions while ensuring high code quality, performance, security, and long-term stability. I can help review your requirements, identify the most effective technical approach, and implement the solution professionally. Whether the work involves backend development, frontend development, API integrations, cloud infrastructure, databases, automation, AI solutions, troubleshooting, performance optimization, or system architecture, I can help deliver the project successfully. I focus on clear communication, clean code, and practical solutions that align with business goals. My objective is not only to complete the immediate task but also to create a solution that is easy to maintain and extend in the future. Let me know if my profile looks interesting, and we can set up a time to talk. Best regards, Elijah M.
$2,000 USD in 10 days
1.0
1.0

Hi, I am a blockchain developer with strong experience in Solidity, Aave flash loans, Uniswap and Sushiswap routing, and off chain bots with TypeScript and ethers.js. I have built flash loan and arbitrage contracts with mainnet fork tests showing profit after gas, so your project fits my past work well. I am comfortable with Hardhat and Foundry and with sub second price monitoring over WebSocket or a dedicated node. My approach is simple. First I build the on chain contract that requests and repays the Aave flash loan in the same transaction, routing the borrowed amount through Uniswap and Sushiswap. Then I build the off chain listener that pulls live prices, detects profitable spreads in milliseconds, simulates each bundle, picks the lowest gas route and submits only when net profit after gas is positive, using gas oracles. After that I write a Hardhat or Foundry test suite on a mainnet fork that shows at least one successful arbitrage cycle. I will deliver clean commented code, a clear README and well documented environment variables for private keys, RPCs and Aave and DEX addresses, so you can run the bot on your own keys and infrastructure. Best, Stanislav
$1,800 USD in 14 days
0.0
0.0

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