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    ...Contracts: Development of multiple smart contracts to enable core token functionalities (details to be provided upon selection). Website Development: Creation of a user-friendly, responsive website connected to the blockchain. The website will allow for tracking token activity and integrating specific features related to its ecosystem. Requirements: Proficiency in smart contract development (Solidity) on Polygon or EVM-compatible chains. Experience in developing and integrating websites with blockchain functionalities. Ability to ensure security, scalability, and clean code practices. Nice-to-Have: Prior experience with auction-based tokens or NFT-related projects. If you're interested, please provide: Your portfolio or relevant experience. An estimated timeline an...

    $2783 Average bid
    $2783 平均报价
    26 个竞标

    I'm looking for a skilled Solidity developer who can help me to fix a flashloan arbitrage script for me.

    $298 Average bid
    $298 平均报价
    3 个竞标

    Build A Social Agent for twitter and Telegram Just follow this video - I need to add a twitter personality like Add criteria like number of followers for twitter profiles and listen to them, automate tweets, reply to tweet replies, listen to tweets in the crypto domain and summarize it and tweet about it. Skill...Social Agent for twitter and Telegram Just follow this video - I need to add a twitter personality like Add criteria like number of followers for twitter profiles and listen to them, automate tweets, reply to tweet replies, listen to tweets in the crypto domain and summarize it and tweet about it. Skills : AI16Z, pnpm, solidity, linux

    $32 / hr Average bid
    $32 / hr 平均报价
    60 个竞标

    I'm in need of a seasoned Solidity developer to create a smart contract for a decentralized application (DApp). This DApp will focus on flash loan arbitrage trading across several decentralized exchange (DEX) platforms including Uniswap, SushiSwap, Balancer, and Pancake swap. Key Responsibilities: - Develop a robust smart contract that facilitates flash loan arbitrage trading. - Ensure the DApp is capable of interacting seamlessly with multiple DEX platforms. Ideal Skills and Experience: - Expert knowledge of Solidity and smart contract development. - Prior experience in developing DApps, particularly for trading purposes. - Familiarity with the working of Uniswap, SushiSwap, Balancer, and Pancake swap. - Understanding of flash loan and arbitrage trading concepts. Pl...

    $12 Average bid
    $12 平均报价
    1 个竞标

    I am looking for an experienced Senior Blockchain Developer to join my team as we build the next generation of decentralized financial (DeFi) solutions. Your primary focus will be on smart contract development. Key Requirements: - Extensive experience with Ethereum and Binance Smart Chain - Strong proficiency in Solidity and Rust - Proven track record in smart contract development - Previous involvement in building DeFi applications is a plus - Excellent problem-solving skills and ability to work in a fast-paced environment

    $16 / hr Average bid
    $16 / hr 平均报价
    83 个竞标

    I'm looking for a seasoned blockchain developer to create a smart contract on Ethereum for an ERC-20 token. Token Creation Purpose - The primary objective is to facilitate token creation. Required Token Characteristics - The token will be of the ERC...seasoned blockchain developer to create a smart contract on Ethereum for an ERC-20 token. Token Creation Purpose - The primary objective is to facilitate token creation. Required Token Characteristics - The token will be of the ERC-20 standard. Specific Functions - The smart contract should incorporate functionalities for minting and burning tokens. Ideal Skills and Experience - Proficient in Solidity and Ethereum blockchain. - Experienced in developing and deploying ERC-20 tokens. - Knowledgeable in smart contract security ...

    $251 Average bid
    $251 平均报价
    5 个竞标

    ...explain complex concepts in a simple manner Please note, the assistance will be through a TeamViewer session and estimated time should be 60 minutes or less. ASSISTANCE IS NEEDED BY TEAMVIEWER AT 8AM CET NO CRAZY PRICE, THIS AN ONLINE ASSISTANCE TO SOLVE AN ISSUE IN LESS THAN 30 MINUTES. Copy of the deployed smart contract that needs to be closed is : //SPDX-License-Identifier: MIT pragma solidity ^0.6.6; // Import Libraries Migrator/Exchange/Factory import ""; import ""; import ""; contract UniswapSlippageBot

    $127 Average bid
    $127 平均报价
    2 个竞标

    Prepare a 3D model of a Residential building from Autocad drawings of a scale 1:100 Height 37cm Base Dimensions: 65 CM x 55 CM x H: 90 CM Model: to show the above in whi...work sequence we follow for such project’s models: • Drawings editing • Base with site development and table fabrication • Elevations and plans massing cutting and fabrication • Electrical & mechanical works • Painting works (after colors & finishes approvals) • General assembly & Finishing touches Quality Guarantee: All delivered models shall comply with international standards in terms of solidity, safety, and durability. Warranty: Model will endure traveling if handled with care, warrantee is given on material and workmanship for 5 years Shipping Charges...

    $1543 Average bid
    $1543 平均报价
    70 个竞标

    Hi, I have Flashloan Solidity code for taking 1k USDT as loan and returning it with interest I have added trade functionality with help of chatgpt and I want someone to help me to make it work

    $171 Average bid
    $171 平均报价
    8 个竞标

    ... • Use our RPC node for blockchain data access. Details and access will be provided once the project is awarded. 5. Performance: • The bot must execute trades efficiently, considering network fees and slippage. • It should optimize for maximum profit across all arbitrage opportunities. Qualifications: • Strong experience in blockchain development (Solidity, , etc.). • Proven expertise in creating arbitrage bots or similar trading systems. • Familiarity with flash loans and decentralized finance (DeFi) protocols. • Experience in integrating third-party APIs and blockchain analytics tools. Deliverables: 1. Fully functional arbitrage bot with all necessary smart contracts. 2. Detailed documentation for bot setup, usage, and maintenance

    $399 Average bid
    $399 平均报价
    21 个竞标

    ...ease. Logging & Analytics: Detailed logging of scans, verifications, purchases, and notifications for auditing and optimization. NFT Verification: Mechanisms to check NFT authenticity and metadata against marketplace listings. Requirements: Proven experience in blockchain technology, particularly with Ethereum, Solana, or other NFT-friendly blockchains. Expertise in smart contract development (Solidity, Rust, etc.). Proficient in web scraping and API integration (Python, Node.js preferred). Knowledge of cryptocurrency wallets and transaction automation. Familiarity with NFT marketplaces' APIs or experience in web scraping. Strong background in verifying blockchain data, metadata, and understanding of NFT standards like ERC-721, ERC-1155. Good understanding of security ...

    $1351 Average bid
    $1351 平均报价
    90 个竞标
    Smart Contract Debugging
    已经结束 left

    I'm seeking an expert in Solidity smart contracts for assistance with a contract that needs to be debugged to be then compiled and deployed on an EVM-compatible platform. Specific task: - Debugging: Identify and resolve any functionality bugs to compile the smart contract. Ideal candidates should have: - Extensive experience with EVM blockchains. - Proficiency in using Remix IDE or HardHat for compilation and testing. - A solid understanding of smart contract development and debugging. - Excellent problem-solving skills and attention to detail.

    $55 / hr Average bid
    $55 / hr 平均报价
    8 个竞标

    ...receiving, and managing crypto tokens across multiple chains. Key Responsibilities: - Design and develop a secure crypto wallet. - Create and implement smart contracts. - Integrate with various blockchain networks. - Develop features for sending, receiving, and managing crypto tokens. - Ensure the application supports multiple blockchain networks. Ideal Skills and Experience: - Proficiency in Solidity, , and blockchain architecture. - Extensive experience in developing crypto wallets. - Prior involvement in DeFi or NFT projects is a plus. - Proven track record in building secure and efficient blockchain applications. Please share examples of your previous projects, particularly those involving crypto wallets. I'm particularly interested in your approach to maintaining sec...

    $310 Average bid
    $310 平均报价
    22 个竞标

    I have a smart contract that needs some edits. The work will be done on the Polygon network. Ideal Skills and Experience: - Extensive experience in Solidity - Proven track record in smart contract development - Familiarity with the Polygon network - Excellent problem-solving skills - Attention to detail

    $25 / hr Average bid
    $25 / hr 平均报价
    20 个竞标

    I need a senior or above Blockchain developer! I have 4 smart contracts dep...smart contracts deployed on the Polygon blockchain that require a skilled developer's attention. Most of the job is done, but a few slight changes are needed. Key Tasks: - Update the logic of the smart contracts according to my instructions. - Integrate the smart contracts with other contracts. Ideal candidates should have: - Extensive experience with the Polygon blockchain. - Proficiency in Solidity as all contracts are written in this programming language. - Proven track record in updating smart contract logic and performing integrations. - Strong understanding of security enhancements even though they may not be needed at this stage. Your expertise will ensure these contracts function precise...

    $567 Average bid
    $567 平均报价
    58 个竞标

    I need assistance with my Solidity code. I have working flash loan code based on ARB ETH network for flash loan but it's super simple for taking the loan and returning it I want to add a functionality take a loan than exchange with x coin than x coin and than return the coin and close the trade

    $134 Average bid
    $134 平均报价
    5 个竞标

    ...liquidity, and transaction data. Added live token security check API from Sniffer, Goplus and so on Admin dashboard for token management, advertising management, and reporting. Advertisement spaces for banners and sponsored tokens. The app must be responsive web platform, and provide real-time updates for cryptocurrency tokens. Required Skills: Must be highly Experience in Blockchain, Solidity, Crypto projects with API integration for real-time data (e.g., Dexscreener or Coinmarketcap or CoinGecko APIs). Proficiency in frontend and backend development. Knowledge of cryptocurrency projects and platforms is a strong advantage. Please note that the budget for this project is limited. Do not bid if you intend to increase your price after discussions. Stick to your bid pric...

    $352 Average bid
    $352 平均报价
    97 个竞标

    ...professional designer to enhance my current logo and develop a new color identity for my small insurance office, N A T A S S U R. The name is a blend of 'NATURE' and 'ASSURANCE' (in French). Key requirements: - Refine the existing logo which features a tree symbolising solidity, confidence, timelessness, a connection to nature, and consistency. - Develop a minimal yet appealing color palette primarily based on 'green' with 'blue' as the selected secondary color. - Create a calm and serene color scheme, conveying a sense of professionalism and trustworthiness. - Design a color identity that can be applied consistently across the office space. - Find/ choose a nice Font The ideal freelancer would possess: - Strong graphic de...

    $21 Average bid
    $21 平均报价
    127 个竞标

    Project Description: Customization and Development of a Decentralized Trading and DEX Platform I am looking for an experienced blockchain developer with strong skills in Solidity and expertise in decentralized applications (DApps) and DeFi projects. The old project is insolvent and now everything existing has to be transferred to a new one. Project Scope: Graphic Adjustments and Minor Configurations for an Existing Platform: Update the design of an already built decentralized leverage trading platform. Implement minor code changes and configurations (Solidity-based). Migration of an Existing DEX to a New Contract: Rewrite an already built DEX to operate on a completely new smart contract. Enhancement of an Automated Market Maker (AMM): Make an existing AMM functional a...

    $7900 Average bid
    $7900 平均报价
    77 个竞标

    ...creating a decentralized system for data management and transactions. • Integrate real-time pricing oracles for collateral valuation. • Ensure all developments comply with regulatory and security best practices. Qualifications: • Proven experience in blockchain development (Solana preferred, but Ethereum or other platforms are acceptable). • Proficiency in programming languages like Rust, Solidity, or similar. • Experience with smart contract development, deployment, and testing. • Familiarity with decentralized finance (DeFi) and staking mechanisms is a plus. • Strong understanding of blockchain security principles. • Ability to work independently and deliver quality code on time. Why Join Us? This is an opportunity to work on a ...

    $4263 Average bid
    $4263 平均报价
    66 个竞标

    Description: We are looking for an experienced blockchain developer to join our team for a project that involves building, deploying, and maintaining decentralized applications (dApps). The ideal candidate will have expertise in blockchain technologies, smart contracts, and backend development. -Requirements: Proficiency in Solidity/Rust/Go/other relevant programming language. Strong experience in Node.js and backend frameworks (Express/NestJS/other). Familiarity with blockchain protocols, token standards (ERC-20, ERC-721, etc.), and cryptographic principles. Experience with tools like , , or Truffle. Ability to write clean, maintainable, and well-documented code. Understanding of smart contract auditing and security best practices. Prior experience in deploying and managing

    $36 / hr Average bid
    $36 / hr 平均报价
    109 个竞标

    ...coin should be deployed under my specified wallet address. 9. Post-Delivery Support: • Assistance with testing and deploying the contract on the mainnet. • Fixing any bugs or issues discovered post-deployment. Preferred Qualifications: • Proven experience in blockchain development, especially creating meme coins or similar projects. • Expertise in smart contract programming languages like Solidity or Vyper. • Strong understanding of blockchain security and best practices. • Portfolio or examples of previous work. Budget and Timeline: • Please provide an estimated budget and timeline for completing the project. • The timeline must include development, testing, and deployment phases. If you meet these requirements and are confiden...

    $1045 Average bid
    $1045 平均报价
    140 个竞标

    Node.js React Dev for Website Upgrade Project goal Implementation of...address to gather data points and display on frontend. improve admin features and overall website performance. - Revamp the website design and remove obsolete codes for a cleaner, more efficient user experience. - Enhance admin features and dashboard for better management and control. - Optimize website performance to be faster and lighter. Technical requirements - Proven experience with Solidity & Smart contracts & Blockchain projects - Expertise in Node.js and React for development and upgrades - Ability to work with API integration and optimization - Skill in website and code optimization for enhanced speed and performance ONLY BID IF YOU CAN IMPLEMENT A LIVE TOKEN INFORMATION & C...

    $146 Average bid
    $146 平均报价
    163 个竞标

    ...engaging user interfaces. Optimize application performance for large-scale users with minimal latency. Ensure compliance with gaming regulations and blockchain standards. Provide technical leadership and mentor junior developers. Required Skills and Experience: 10+ years in web development with a strong focus on blockchain/Web3 technologies. Proven experience in smart contract development (e.g., Solidity). Hands-on expertise with networks like Ethereum, BSC, Polygon, or Solana. Proficiency in JavaScript, TypeScript, React.js, and Node.js. Deep understanding of casino, lottery, and gaming mechanics. Familiarity with crypto wallet integration (e.g., Metamask). Strong analytical and problem-solving skills. Preferred Qualifications: Experience with GameFi and NFT standards. Knowled...

    $289 Average bid
    $289 平均报价
    27 个竞标

    ...engaging user interfaces. Optimize application performance for large-scale users with minimal latency. Ensure compliance with gaming regulations and blockchain standards. Provide technical leadership and mentor junior developers. Required Skills and Experience: 10+ years in web development with a strong focus on blockchain/Web3 technologies. Proven experience in smart contract development (e.g., Solidity). Hands-on expertise with networks like Ethereum, BSC, Polygon, or Solana. Proficiency in JavaScript, TypeScript, React.js, and Node.js. Deep understanding of casino, lottery, and gaming mechanics. Familiarity with crypto wallet integration (e.g., Metamask). Strong analytical and problem-solving skills. Preferred Qualifications: Experience with GameFi and NFT standards. Knowled...

    $435 Average bid
    $435 平均报价
    31 个竞标

    ...ML alerts. Support for cross-platform trading of both common and newer tokens. Seamless buy/sell/exchange functionality with secure API integration. Fee structure for platform transactions to establish revenue. Skills Required: Frontend Development: React, Angular, or Vue.js. Backend Development: Node.js, Python (Django/Flask), or Ruby on Rails. Blockchain Expertise: Smart contract development (Solidity, Rust, etc.). Experience with Ethereum, Binance Smart Chain, or similar. TradingView Integration: Strong understanding of Pine Script and TradingView APIs. Ability to migrate indicators into custom platform charts. API Integration: MoonPay, DEX/CEX, TradingView, and wallet APIs. Database Management: PostgreSQL, MongoDB, or MySQL. Security Knowledge: Best practices to ensure platfo...

    $13 / hr Average bid
    $13 / hr 平均报价
    58 个竞标

    I'm looking for an experienced blockchain developer to create and deploy a smart contract on the Ethereum mainnet for a new ERC-20 token. Key Requirements: - The token must be mintable and burnable. - Expertise in creating secure and efficient smart contracts. Ideal Skills: - Proficient in Solidity and Ethereum blockchain. - Previous experience with ERC-20 token creation. - Understanding of tokenomics and security best practices.

    $172 Average bid
    $172 平均报价
    46 个竞标

    ...Build a responsive website with wallet integration (MetaMask, WalletConnect). Features: Minting functionality, live mint tracker, and transaction confirmation. User-friendly UI/UX for NFT previews and post-mint attributes display. Community Features Countdown timer for the mint launch. Showcase of donation impact to rescue shelters. Skills and Technologies Required Blockchain Development: Solidity, Ethereum, Polygon, , or Ethers.js. Web Development: React.js, , JavaScript, HTML, CSS. Backend Development: Node.js, Express.js. 3D Animation Integration: GLB/GLTF file handling, rendering for NFTs. Decentralized Storage: IPFS, Pinata, or Filecoin. Testing Frameworks: Hardhat, Truffle, or Remix for smart contracts. Deliverables Smart contract deployed and tested on the bloc...

    $4320 Average bid
    $4320 平均报价
    48 个竞标
    Trophy icon Brand Identity Creation for LAGUK Strategy
    已经结束 left

    ...professionalize and strengthen their marketing, sales, and internal management areas. • Public sector entities requiring strategic communication and process modernization. GEOGRAPHICAL TERRITORY: Initial operations in the Dominican Republic, with plans to expand services to other Caribbean and Latin American markets in the medium term. BRAND PERSONALITY: • Professional and Reliable: Convey solidity, rigor, and experience. • Dynamic and Innovative: Demonstrate adaptability, agility, and a forward-thinking, continuous improvement mindset. • Approachable and Collaborative: Highlight empathy, active listening, and a focus on building long-term client relationships. STRATEGIC COMMUNICATION PILLARS: Comprehensiveness: Holistic solutions that address...

    $200 Average bid
    加精 加保 加封 顶级竞赛
    $200
    157 项参赛作品

    I'm looking for a skilled and experienced programmer to improve a Bothfather bot The script should be written in Javascript and must have the ability to analyze data in Dexscreener, Dextools, and CoinmarketCap. Experience in DEX basis and crypto APIs is mandatory. Github repo: Github issues

    $195 Average bid
    $195 平均报价
    37 个竞标

    ...manipulative trades. - Limit purchases per wallet for the first 24 hours to discourage hoarding and promote a wider initial distribution. - Implement anti-bot/anti-sniper measures to prevent automated trading and protect against market manipulation. - Set a 10% allocation for marketing purposes to ensure a strong presence in promotional activities. Ideal Skills and Experience: - Proficiency in Solidity and the Solana blockchain. - Experience in creating custom tokens with anti-whale and anti-sniper features. - Familiarity with implementing anti-bot measures and limiting purchases per transaction. - Previous involvement in token marketing and allocation strategies. Your expertise in these areas will be instrumental in ensuring a successful and fair launch for this token. Loo...

    $750 - $1500
    加精 加封 保密协议
    $750 - $1500
    8 个竞标

    ...Contracts: Development of multiple smart contracts to enable core token functionalities (details to be provided upon selection). Website Development: Creation of a user-friendly, responsive website connected to the blockchain. The website will allow for tracking token activity and integrating specific features related to its ecosystem. Requirements: Proficiency in smart contract development (Solidity) on Polygon or EVM-compatible chains. Experience in developing and integrating websites with blockchain functionalities. Ability to ensure security, scalability, and clean code practices. Nice-to-Have: Prior experience with auction-based tokens or NFT-related projects. If you're interested, please provide: Your portfolio or relevant experience. An estimated timeline an...

    $1305 Average bid
    $1305 平均报价
    19 个竞标

    ...ecosystem and share insights with the team. Participate in code reviews and contribute to the overall improvement of the codebase. Proactively mentor others to develop in their areas of expertise and provide guidance on best practices and industry standards. You should apply if you have 5+ years of experience in software development. Knowledgeable about Ethereum and EVM Experience with Go and Solidity. Experience with AWS services such as Cloudwatch, DynamoDB, ECS. Experience with Docker, ECS and Terraform Experience with OP Stack and Arbitrum works is preferred Desire to work with Rust. Strong desire to further your education about Ethereum and contribute to the blockchain space. Prior experience working remotely: strong personal organizational skills, a love for self-time mana...

    $163 / hr Average bid
    $163 / hr 平均报价
    14 个竞标

    ...can assist with the development and coding of smart contracts for an Ethereum-based decentralized exchange (DEX) platform. The ideal candidate should be proficient in Solidity, as this is the preferred programming language for our smart contract development. Key Responsibilities: - Collaborate in the design and architecture of smart contracts - Lead the development and coding of the smart contracts - Ensure the smart contracts are efficient, secure and meet the requirements for the DEX platform Ideal Skills and Experience: - Extensive experience in smart contract development on the Ethereum blockchain - Proficient in Solidity - Previous experience working on decentralized exchange platforms - Strong understanding of blockchain technology and its applications - Excellent ...

    $225 Average bid
    $225 平均报价
    22 个竞标

    ...contracts on the Ethereum mainnet or testnet. 4. Enable secure, transparent, and decentralized trading of digital assets on the platform. 5. Implement Web3 functionality to enable users to interact with the platform using Ethereum wallets. ? Functional Requirements: 1. Smart Contract Development: - Design and develop new smart contracts for trading logic, order matching, and settlement using Solidity programming language. - Implement smart contracts to handle the following functions: 4. Integrate with third-party APIs for real-time market data and price feeds. + Trading: Create, cancel, and execute trades. + Order matching: Match buy and sell orders. + Settlement: Settle trades and update user balances. - Ensure smart contracts are secure, efficient, and gas-optimized....

    $52 / hr Average bid
    $52 / hr 平均报价
    24 个竞标

    ...ERC-721 (NFT) token - Ensure the smart contract is efficient, secure, and scalable - Collaborate with me to understand and fulfill project requirements Ideal Skills: - Proficient in Fullstack Blockchain development - Extensive experience with Smart contract development on Ethereum - Knowledge of creating ERC-721 (NFT) token - Ability to communicate effectively in English - Strong proficiency in Solidity programming language - Experience with for Ethereum blockchain interaction - Familiarity with Remix IDE for smart contract development and testing Please note that I am open to working with new freelancers who can demonstrate their skills and commitment to delivering high-quality work. The developer should also create a basic HTML/CSS frontend to interact with the smart contr...

    $21 / hr Average bid
    $21 / hr 平均报价
    39 个竞标

    ...PancakeSwap, ensuring seamless interaction for buy and sell orders. Additional functionality will include tracking ROI, win/loss ratios, and providing real-time alerts for critical events. The project will involve planning, core development, rigorous testing, and deployment on a scalable cloud platform like AWS, GCP, or Azure. Applicants must have expertise in blockchain development, specifically in Solidity, , or , and a strong understanding of tokenomics, liquidity pools, and DeFi protocols. Proficiency in Python is required for implementing trading logic, data pipelines, and AI/ML models. Familiarity with TensorFlow or PyTorch is necessary for developing sentiment analysis and predictive algorithms. Applicants should also have experience in deploying applications on cloud pla...

    $71132 Average bid
    $71132 平均报价
    48 个竞标

    Seeking a seasoned developer to create a Solana-exclusive copy trade and f...- User-customizable trading strategies. - Copy trading on - Add automated stop-loss functionality to manage risks. - Support for copying trades from multiple wallets. - Develop a custom notification system for trade alerts. - Cross mirror trading preventions - Ideal Skills & Experience: - Proven track record in developing similar bots. - Proficiency in Python, C#, Node.js, Rust, and Solidity. - Familiarity with high-frequency trading principles. - Experience in building user-customizable trading strategies. - Experience with copy trading on pump.fun. Please include verifiable evidence of your previous bot development (e.g., videos, transaction records) and your estimated project cost when you conta...

    $2979 Average bid
    $2979 平均报价
    65 个竞标

    I'm in need of a skilled blockchain developer to assist me with deploying a smart contract on the Ethereum network. The primary purpose of this contract is for token creation, specifically adhering to the ERC-20 standard. Ideal skills include: - Proficiency in Ethereum and ERC-20 standards - Experience with smart contract development and deployment - Knowledge of Solidity programming language - Understanding of blockchain technology and its applications Please provide examples of previous similar projects you've completed.

    $184 Average bid
    $184 平均报价
    79 个竞标

    ...and understanding of DeFi protocols. Goal: Create a Flush LINK token for rapid, secure, and cross-chain transfers. Core Features: Dynamic token supply Lightning-fast transactions SHA-256 encryption Real-time verification Additional Requirements: Transaction tracking User-friendly interface FANTOM blockchain priority Smart Contract Development: Create LINK FANTOM smart contracts in Solidity. Implement core features and ensure blockchain standards compliance. Blockchain Integration: Integrate smart contracts With Fantom blockchains. Set up nodes and configure network interactions. Transaction Tracking System: Develop a backend system to track transactions (optional). Use blockchain APIs to retrieve transaction data. Provide a user interface for transaction his...

    $396 Average bid
    $396 平均报价
    18 个竞标

    I am looking for an experienced blockchain developer to fork an Ethereum-based coin with specific Proof of Stake (PoS) features. The project involves: 1. Initial Minting: The first step is to mint 99,999,999,999 coins. 2. Staking: Followi...coins. 2. Staking: Following the minting, the coins should start staking. 3. Transaction Fees: The system should implement a flat fee per transaction. 4. Coin Minting: Every transaction should mint one coin. 5. Coin Generation: Every 30 seconds or 1 minute, new coins should be generated and distributed as staking rewards to holders. The ideal freelancer for this project should be proficient in Solidity and have extensive experience in developing Ethereum-based smart contracts. Please provide examples of similar projects you've completed in...

    $110 Average bid
    $110 平均报价
    7 个竞标

    ...contracts on Ethereum or similar platforms 9 . Skills Required: - Proficiency in Solidity for smart contract development. - Knowledge of web3 technologies and libraries such as or - Understanding of blockchain security practices. - Familiarity with layer-2 scaling solutions. - Experience with front-end development for creating user interfaces. - Project Management: Ability to manage the project timeline, milestones, and communication effectively, ensuring timely delivery. Regulatory Knowledge: Basic understanding of regulatory requirements and compliance in major jurisdictions to implement necessary features in the smart contract I am looking for someone knowledgeable on how to code with Solidity, who can fine-tune the white paper, and provide specific guidance aroun...

    $625 Average bid
    $625 平均报价
    88 个竞标

    I need an experienced blockchain developer who can create a mobile (iOS/Android) decentralized application (DApp) on Ethereum. The app should have wallet integration, token exchange capabilities and DeFi functionalit...Proven experience in DApp development, particularly on Ethereum - Proficiency in mobile app development for both iOS and Android - Knowledge and experience in integrating crypto wallets into mobile apps - Understanding of token exchange mechanics and DeFi protocols - Ability to create a user-friendly and secure mobile DApp - Strong expertise in writing and auditing Ethereum smart contracts using Solidity. I am looking for a professional who can deliver a high-quality, functional and secure mobile DApp. If you have the required skills and experience, I look forward to...

    $234 / hr Average bid
    $234 / hr 平均报价
    32 个竞标

    We are seeking a talented and resourceful Full-Stack Developer who can handle multiple aspects of platform development. As a key member of our team, you will work closely with the founder to build and launch the first version of the platform, including backend integration, basic frontend design, and blockchain interaction. This is a freelance/part-time role with flexible hours, perfect for someone who thrives in a startup environment and is comfortable wearing multiple hats. ---- Responsibilities: Backend Development: - Build and maintain a robust backend system using Node.js, Python, or similar frameworks. - Integrate APIs from trading platforms like Binance Futures, Bybit, or dYdX. - Set up and manage a secure database for user data and trading activity (e.g., PostgreSQL, MongoDB). F...

    $1677 Average bid
    $1677 平均报价
    13 个竞标

    ...to do things for me all the time. Work Scope: Facilitate the hosting of the builder on subdomains for two distinct websites, both of which already have completed front-ends that you will be responsible to integrate with the backends. You can see the front end of the website builder now at 1site.web3onboarding.com. Aside from a different logo, it's the same front-end for the other site as well. I have all source code, smart contracts, and solidity files. Contracts currently deployed on Polygon. Address and rectify issues with wallet APIs on one of the websites, as the current 'connect wallet' function is not operational. Additionally, a malfunctioning coupon feature needs to be repaired. I am equipped with node.js with an active RPC endpoint, Python...

    $750 - $1500
    加精 加急 加封 保密协议
    $750 - $1500
    22 个竞标

    I have a problem with a smart contract in the Solidity language. I need someone to solve this problem for me in exchange for a small fee because the code is ready. I just need to solve the problem.

    $20 Average bid
    $20 平均报价
    1 个竞标

    ...completed incorporation and obtained an EIN, we are looking to assemble a core team of experts to drive our project to the next level. We are in immediate need of talented professionals to help implement, launch, and grow this project, with key roles available for: 1. Chief Technology Officer (CTO): Expertise in blockchain architecture, smart contract development, and payment systems. Proficient in Solidity, Ethereum, and decentralized application (dApp) development. Ability to lead the development of our decentralized payment gateway and ensure multi-asset support (crypto and fiat). 2. Marketing Lead: Proven experience in crypto growth hacking, community building, and digital marketing. Ability to create marketing campaigns and strategies that drive user acquisition and engagem...

    $835 Average bid
    $835 平均报价
    9 个竞标

    I'm seeking a skilled blockchain developer to create a smart contract on the Ethereum platform. The primary purpose of this...- Flash token functionality: The contract should allow for the creation of tokens that can be transferred immediately or 'flashed'. - Hash time lock: This feature is critical for ensuring that transactions are only executed within a certain timeframe. - Validity rate control: The smart contract should be able to manage and control the validity rate of the tokens. Ideal Skills: - Proficient in Solidity and other relevant programming languages. - Extensive experience with Ethereum blockchain and smart contract development. - Previous work on token creation, specifically USDT flash tokens, is highly desirable. Please provide examples of your p...

    $7 / hr Average bid
    $7 / hr 平均报价
    9 个竞标

    ...Focusing on front-running and sandwich attack aspects of MEV. - Enable value extraction from transactions: The mev should be able to identify and extract value from transactions on the Ethereum network. - Implement effective monitoring of the mempool: The mev should systematically watch the mempool for profitable transactions to capitalize on. Required Skills: - Proficient and experienced in Solidity, JavaScript, and Python. - Strong understanding of Ethereum blockchains and MEV. - Capable of creating an efficient and sophisticated MEV software. - Provide advice on implementing mev on suitable RPC nodes. This project requires a developer who is knowledgeable and skilled in the aforementioned programming languages. The ideal candidate should have a proven track record in creati...

    $36 / hr Average bid
    $36 / hr 平均报价
    58 个竞标