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    2,000 solidity selfdestruct ofert prac znalezionych

    Zlecę napisanie spersonalizowanego kontraktu NFT ERC-721. Wymagania: znajomości Solidity, realiów NFT, metadata, arweave, i język polski; Personalizacja w niewielkim zakresie: określenie maksymalnej podaży, a przede wszystkim linki do metadanych umieszczone bezpośrednio w kontakcie (linki do plików .json hostowanych na arweave). Plus pomoc w implementacji: chcę samemu wdrożyć ten kontrakt w sieci Etherium. Dlatego też chcę mieć np. możliwość porozmawiania.

    $363 Average bid
    $363 Średnia Oferta:
    3 składanie ofert

    ...solidnej wiedzy z programowania. Osoba, której poszukujemy, będzie pracowała zarówno w małych zespołach składających się z innych programistów, jak i samodzielnie z niewielką pomocą leadera projektu. Czym zajmuje się osoba na stanowisku Smart Contract Developer? Pisze smart contracts. Czego wymagamy od kandydata? Dobrej ogólnej wiedzy z zakresu smart contracts. Dobrej znajomości Solidity. Dobrej znajomości EVM. Dobrej znajomości co najmniej jednego języka programowania. Płynnej znajomości języka angielskiego i polskiego. Mile widziana dostępność “od zaraz” lub w ciągu kilku tygodni. Mile widziana znajomość , veCRV, ERC-20, ERC-1155, ERC-721, etc. Co oferujemy pracownikowi? Stawkę 111-333 zł na rękę ...

    $44 / hr Average bid
    $44 / hr Średnia Oferta:
    25 składanie ofert

    ...vice versa). • Provide technical support for any deployment or bridging issues. • Collaborate with the project team to deliver a scalable and efficient solution. Requirements: • Proven experience in blockchain development. • Familiarity with Ethereum and Solana ecosystems. • Proficiency in Wormhole protocol and cross-chain bridging. • Strong programming skills, particularly in Python and Solidity. • Experience with smart contracts and token deployment. How to Apply: To ensure you’re not a bot and have read the full description, include the words “Purple Hearts” in your submission. Please provide a brief overview of your relevant experience, links to past projects, and your availability for this task. We look forward ...

    $622 Average bid
    $622 Średnia Oferta:
    20 składanie ofert

    ...Management – Helps users track and manage investments. Step 3: Choose the Right Technology Stack Frontend (User Interface):  • HTML, CSS, JavaScript (React.js, Vue.js, or Angular) Backend (Server-side):  • Node.js, Python (Django/Flask), PHP (Laravel)  • Database: PostgreSQL, MySQL, MongoDB Blockchain & Crypto Integration:  • Use APIs (CoinGecko, CoinMarketCap, Binance API)  • Smart Contracts (Solidity for Ethereum, Rust for Solana) Security Protocols:  • SSL Encryption  • 2FA Authentication  • Cold Wallet Storage for Funds  • DDOS Protection Step 4: Design & Develop the Website Must-Have Features: ✅ User Registration & KYC Verification ✅ Crypto Wallet Integration ✅...

    $860 Average bid
    $860 Średnia Oferta:
    31 składanie ofert

    Proszę, Zarejestruj się lub Zaloguj, żeby zobaczyć szczegóły.

    Projekt z Umową o Zachowaniu Poufności

    ...scikit-learn, or PyTorch for anomaly detection (e.g., pump-and-dump patterns). 3. Frontend Development & Visualization Dashboards & UI: Experience with Streamlit, Dash, or modern frontend frameworks (React, Vue.js) to visualize analyzed data. Data Visualization: Matplotlib, Plotly, or D3.js for charts, tables, and graphs. 4. Security & Blockchain Knowledge Smart Contract Analysis: Understanding Solidity and blockchain security risks (rug pulls, liquidity burn, minting functions). Blockchain APIs: Experience with or for querying on-chain data. 5. Scaling & Deployment Cloud Technologies: AWS, GCP, or Azure for hosting and data processing. Docker & CI/CD: Experience with Docker, Kubernetes, and Continuous Integration/Deployment for scalable architecture. As...

    $762 Average bid
    Wyróżniony Projekt z Umową o Zachowaniu Poufności
    $762 Średnia Oferta:
    27 składanie ofert
    Experienced iGaming Developer
    3 dni left
    Zweryfikowany

    Only Seeking Developers That Have Already Built IGaming Software ONLY! We are a next-generation online gambling platform, and we are seeking a skilled and proven iGaming developer to bring our...optimized for mobile and desktop platforms. Provide documentation and ongoing support for deployed games. Proven experience in developing iGaming games (slots, poker, roulette, etc.). Ability to showcase previous work or projects in the iGaming space. Expertise in programming languages and tools like: Unity, Unreal Engine, or similar platforms for game development. Blockchain integration using Solidity or similar frameworks (preferred). Multiplayer gaming technologies. Familiarity with regulatory compliance for online gambling platforms. Strong UI/UX design skills to ensure a premium user e...

    $9763 Average bid
    $9763 Średnia Oferta:
    27 składanie ofert

    ...support for integrating the cryptocurrency into the platform. Conduct security audits and ensure the coin is secure from vulnerabilities. Assist with any technical integration related to cryptocurrency payments on the platform. Required Skills: Experience with blockchain development (Ethereum, Binance Smart Chain, or other blockchain platforms). Strong knowledge of smart contract development (Solidity, Rust, etc.). Experience in creating ERC-20 or BEP-20 tokens. Familiarity with integrating cryptocurrencies into e-commerce platforms. Ability to ensure the security of transactions and smart contracts. Knowledge of cryptocurrency payment gateways and tokenomics. Preferred Skills: Prior experience with e-commerce cryptocurrency projects. Familiarity with APIs for crypt...

    $50 / hr Average bid
    $50 / hr Średnia Oferta:
    13 składanie ofert

    We are developing a platform designed to optimize international transactions for businesses engaged in global trade. The platform will leverage advanced technologies to provide seamless...transactions and data are protected. Required Roles: AI/ML Engineers Blockchain Developers Full-Stack Developers Mobile App Developers (iOS/Android) DevOps Engineers UI/UX Designers Security Engineers Cloud Architects Compliance Engineers Data Engineers/Scientists QA Engineers Technologies: Frontend: React, Vue.js, Angular Backend: Node.js, Python, Ruby on Rails Blockchain: Ethereum, Hyperledger, Solidity, Smart Contracts AI/ML: TensorFlow, PyTorch, Scikit-Learn Databases: SQL/NoSQL (MySQL, PostgreSQL, MongoDB) Mobile: React Native, Swift, Kotlin Cloud: AWS, Azure, GCP DevOps: Docker, Kubernetes,...

    $421 Average bid
    $421 Średnia Oferta:
    61 składanie ofert

    I'm seeking a skilled Rust developer with React knowledge to assist with migrating specific functionalities from a dapp built Solidity on BSC20 to the Solana blockchain. Current functionality takes payment by card with an onramp integration for bnb, wallet creation linked to email address, bnb swapped for a bsc20 token and the token placed into a holding staking smart contract. Tokens are releases by contract admin to a given address using a call function. Ideal Skills and Experience: - Proficiency in Rust programming language - Skills in Reac - Extensive experience with Solidity and BSC20 - Deep understanding of smart contracts, token management, and event handling - Prior experience in developing DeFi applications on Solana - Ability to perform a direct, unalter...

    $513 Average bid
    $513 Średnia Oferta:
    86 składanie ofert

    I'm in need of an experienced developer who can create a smart contract on the Ethereum blockchain for a DApp, and set up a WordPress theme for it. Key Res...experienced developer who can create a smart contract on the Ethereum blockchain for a DApp, and set up a WordPress theme for it. Key Responsibilities: - Develop a smart contract on Ethereum that interacts with a DApp. - Implement data storage functionalities within the smart contract. - Configure and customize a WordPress theme to align with the DApp. Ideal Skills and Experience: - Proficient in Solidity and familiar with DApp development. - Strong understanding of Ethereum blockchain and smart contract creation. - Experienced in WordPress theme setup and customization. - Knowledge in implementing data storage within s...

    $491 Average bid
    $491 Średnia Oferta:
    23 składanie ofert

    I'm in need of an experienced developer who can create a smart contract on the Ethereum blockchain for a DApp, and set up a WordPress theme for it. Key Res...experienced developer who can create a smart contract on the Ethereum blockchain for a DApp, and set up a WordPress theme for it. Key Responsibilities: - Develop a smart contract on Ethereum that interacts with a DApp. - Implement data storage functionalities within the smart contract. - Configure and customize a WordPress theme to align with the DApp. Ideal Skills and Experience: - Proficient in Solidity and familiar with DApp development. - Strong understanding of Ethereum blockchain and smart contract creation. - Experienced in WordPress theme setup and customization. - Knowledge in implementing data storage within s...

    $488 Average bid
    $488 Średnia Oferta:
    12 składanie ofert

    ...Responsibilities: Design and implement a secure cryptocurrency payment gateway. Collaborate with our web development team to ensure seamless integration. Lead the development of smart contracts for token transactions. Provide guidance and mentorship to junior team members on blockchain best practices. Qualifications: Proven experience in blockchain development and smart contract programming (e.g., Solidity). Familiarity with cryptocurrency wallets and payment processing. Strong problem-solving skills and ability to work independently. Why Join Us? At CryptoCommerce Co., you will have the opportunity to shape the future of online shopping by integrating cryptocurrency into our platform. If you are passionate about blockchain technology and eager to make an impact, we would love t...

    $7910 Average bid
    $7910 Średnia Oferta:
    40 składanie ofert

    ...NFT-based solution on the MultiversX (Elrond) blockchain. Key Responsibilities: - Smart Contract Development: Crafting robust and secure smart contracts to govern the NFT transactions. - Backend Integration: Ensuring seamless connectivity of the NFT solution with the backend systems. - AWS Deployment: Deploying the solution on AWS for scalability and reliability. Ideal Candidate: - Proficient in Solidity and Rust, with a deep understanding of their application in smart contract development. - Extensive experience with AWS, ensuring efficient deployment and management of cloud resources. - Strong problem-solving skills and detail-oriented mindset to address potential challenges proactively. I'm looking for a professional who can translate my vision into a functional NFT-...

    $22 / hr Average bid
    $22 / hr Średnia Oferta:
    31 składanie ofert

    I'm in search of an experienced blockchain developer to create and mint an exclusive, limited supply token on the Polygon network...and analytics system that includes: - Monitoring customer purchases and redemptions, focusing on transaction value, frequency of transactions, and customer demographics. - Keeping a record of staking activities and the corresponding rewards. - Tracking event access and participation. Ideal Candidate: The ideal candidate for this project should have a profound knowledge of blockchain technology, Solidity and experience in developing on the Polygon network. A strong background in creating smart contracts and staking systems is crucial. The successful freelancer will be able to develop a comprehensive data tracking system, demonstrating expertise in ...

    $19 / hr Average bid
    $19 / hr Średnia Oferta:
    30 składanie ofert

    We are seeking a Web3 software developer to update a MVP platform. The platform will l...Interoperability: Assets usable across multiple games. Key Problems: 1. Audits security risks on Casino game smart contract. 2. Fix issues relating web3 automation on the backend(Express) part. 3. Integrate token-to-nft exchange function. Tech Stack: Blockchain: Ethereum Smart Contracts: Solidity Frontend Integration: Backend: Node.js, Database: MongoDB Frontend Framework: React.js Testing: Mocha, Chai Deployment: Docker, Kubernetes Version Control: Git, GitHub Requirements: Experience with Ethereum and Solidity. Proficiency in , Node.js, , and React.js. Familiarity with MongoDB, Docker, and Kubernetes. Understanding of decentralized gaming and cryptographic principles.

    $161 Average bid
    $161 Średnia Oferta:
    18 składanie ofert

    I'm looking for a blockchain developer to complete a decentralized voting system project. Tasks include: 1. Reviewing and finalizing the backend smart contract (Solidity). 2. Developing a frontend web app (React or similar) for user interaction. 3. Integrating Civic for voter identity verification. 4. Verifying and implementing Witnet Oracle for external data validation. As I said I finished the smart contract but I need you to check it for me. Also about the project It is just a university final year project so it doesnt need to be treated as a real life product if it make sense.

    $55 Average bid
    $55 Średnia Oferta:
    1 składanie ofert

    ..., , WebGL, Canvas API, and other game engines. Real-Time Games and Tournament Systems: Experience with WebSocket, RESTful APIs, real-time server communication, and multiplayer environments. Experience in managing high traffic and server load. Blockchain and Meme Coin Development: Experience in token development on Ethereum, Binance Smart Chain, and smart contract development using Solidity. Understanding and experience with ERC-20 and ERC-721 token standards. Database Design and Management: Experience in database design and efficient data management using MySQL, PostgreSQL, MongoDB, etc. Cloud and Server Infrastructure: Experience in deploying and managing servers on cloud platforms like AWS, Google Cloud, Azure. Game Economy and Reward System Design: Experience designing in-game

    $547 Average bid
    $547 Średnia Oferta:
    44 składanie ofert

    ..., , WebGL, Canvas API, and other game engines. Real-Time Games and Tournament Systems: Experience with WebSocket, RESTful APIs, real-time server communication, and multiplayer environments. Experience in managing high traffic and server load. Blockchain and Meme Coin Development: Experience in token development on Ethereum, Binance Smart Chain, and smart contract development using Solidity. Understanding and experience with ERC-20 and ERC-721 token standards. Database Design and Management: Experience in database design and efficient data management using MySQL, PostgreSQL, MongoDB, etc. Cloud and Server Infrastructure: Experience in deploying and managing servers on cloud platforms like AWS, Google Cloud, Azure. Game Economy and Reward System Design: Experience designing in-game

    $284 Average bid
    $284 Średnia Oferta:
    38 składanie ofert

    ...m looking for an experienced Solidity developer to create and audit a smart contract for profit-maximizing token swaps, specifically targeting arbitrage opportunities on Uniswap and other decentralized exchanges (DEX). Key Responsibilities: Develop a smart contract for token swapping, implementing a profit-maximizing strategy. Ensure compatibility with Uniswap V2/V3 and other DEX platforms. Implement slippage tolerance and ensure transaction optimization. Perform a thorough security audit of the code to identify and mitigate vulnerabilities (e.g., reentrancy attacks, integer overflow, front-running risks). Write clear and well-documented code. Test the contract thoroughly on a testnet before mainnet deployment. Skills Required: Strong experience with Solidity and Ethere...

    $969 / hr Average bid
    $969 / hr Średnia Oferta:
    11 składanie ofert

    Required Technical Skills Development Skills - Backend Development: Python (Django/Flask), Node.js - Frontend Development: React.js, Vue.js - Database: MySQL, MongoDB Blockchain and Coin Development Experience - Building independent blockchain networks with gas fee optimization - Designing and implementing smart contracts (Solidity, Rust, etc.) Payment and Financial System Development Experience - Integration of credit card payment systems (Stripe, PayPal, etc.) - Design and integration of cryptocurrency payment systems and APIs Additional Preferred Skills - Experience in AI content generation and data analysis - Game system development experience (e.g., scratch cards, puzzles) - Deployment experience on cloud platforms such as AWS, GCP, or Azure

    $237 Average bid
    $237 Średnia Oferta:
    26 składanie ofert

    I need a Solidity expert to fix my Ethereum smart contracts. I've been facing scams and fraudulent activities, so I need someone to ensure my contracts are secure and functioning properly. Key requirements: - Identify and fix vulnerabilities in the contract logic. - Ensure protection against scams or fraudulent activities. - Debug any existing functionality issues. Ideal skills: - Proficiency in Solidity programming language. - Extensive experience with Ethereum platform. - Strong knowledge of smart contracts security.

    $156 Average bid
    $156 Średnia Oferta:
    9 składanie ofert

    About Metify Metify is a decentralized Web3 platform designed to empower education, freelancing, and professional networking. By leveraging blockchain technology, we create a transparent and secure environment for collaboration and innovation. Project Overview We are seeking a Solidity developer to create a smart contract for processing Ethereum donations to the BEAT AIDS charity. The contract will securely log transactions, support real-time confirmations, and ensure data integrity. Key Deliverables 1. Develop a Solidity smart contract to manage Ethereum donations. 2. Record transactions on-chain, including donor address, amount, and timestamp. 3. Ensure token compatibility by accepting only ETH and rejecting other tokens. 4. Implement security measures such as reentrancy ...

    $75906 Average bid
    $75906 Średnia Oferta:
    18 składanie ofert

    ...fiat currencies. • Provide user authentication and data encryption for enhanced security. • Create a clear, intuitive user interface for managing token purchases. • Monitor the dashboard’s performance and troubleshoot issues as needed. Requirements: • Proven experience in blockchain development and cryptocurrency integrations. • Proficiency in programming languages such as JavaScript, Python, or Solidity. • Experience with smart contract development and deployment (e.g., Ethereum, BSC). • Strong knowledge of web development (React, Vue.js, or similar frameworks). • Understanding of secure payment gateway integrations. • Familiarity with tokenomics Answer these questions in the proposal: 1. Have you recently developed a presale ...

    $2331 Average bid
    $2331 Średnia Oferta:
    85 składanie ofert

    ...fiat currencies. • Provide user authentication and data encryption for enhanced security. • Create a clear, intuitive user interface for managing token purchases. • Monitor the dashboard’s performance and troubleshoot issues as needed. Requirements: • Proven experience in blockchain development and cryptocurrency integrations. • Proficiency in programming languages such as JavaScript, Python, or Solidity. • Experience with smart contract development and deployment (e.g., Ethereum, BSC). • Strong knowledge of web development (React, Vue.js, or similar frameworks). • Understanding of secure payment gateway integrations. • Familiarity with tokenomics Please answer my question with number wise. Otherwise I will reject your proposal...

    $427 Average bid
    $427 Średnia Oferta:
    13 składanie ofert

    I'm seeking a skilled Rust developer to assist with migrating specific functionalities from Solidity on BSC20 to the Solana blockchain. The primary focus of this project is to facilitate a direct transfer of smart contract interactions, token management, and event handling without alterations or enhancements to the existing functionalities. This project is intended for the development of a DeFi application on Solana. Ideal Skills and Experience: - Proficiency in Rust programming language - Extensive experience with Solidity and BSC20 - Deep understanding of smart contracts, token management, and event handling - Prior experience in developing DeFi applications on Solana - Ability to perform a direct, unaltered migration of functionalities

    $233 Average bid
    $233 Średnia Oferta:
    20 składanie ofert

    I'm seeking a skilled programmer to develop a trading robot for handling Cryptocurrency on the OKX exchange. The robot should specialize in day trading, implementing techniques aimed at capturing p...price movements within a single day. Key Requirements: - Proficient in programming and algorithm development for trading - Experience with Cryptocurrency, specifically the OKX exchange - Understanding and ability to implement day trading strategies - Knowledge of trading bot regulations and risk management Note : He must implemented at least two similar projects before Skills in Python, C++, Solidity ,or other relevant programming languages, alongside prior experience in developing trading robots will be highly appreciated. Please provide your portfolio of previous similar work...

    $145 Average bid
    $145 Średnia Oferta:
    35 składanie ofert

    ...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...

    $2682 Average bid
    $2682 Średnia Oferta:
    31 składanie ofert

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

    $298 Average bid
    $298 Średnia Oferta:
    3 składanie ofert
    Build A Social AI Agent
    Zakończone left

    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 Średnia Oferta:
    57 składanie ofert

    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 Średnia Oferta:
    3 składanie ofert

    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

    $15 / hr Average bid
    $15 / hr Średnia Oferta:
    76 składanie ofert

    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 Średnia Oferta:
    5 składanie ofert

    ...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 Średnia Oferta:
    2 składanie ofert

    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 Średnia Oferta:
    8 składanie ofert

    ... • 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

    $401 Average bid
    $401 Średnia Oferta:
    21 składanie ofert

    ...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 ...

    $1360 Average bid
    $1360 Średnia Oferta:
    88 składanie ofert

    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 Średnia Oferta:
    8 składanie ofert

    ...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 Średnia Oferta:
    22 składanie ofert

    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 Średnia Oferta:
    20 składanie ofert

    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 Średnia Oferta:
    56 składanie ofert

    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

    $105 Average bid
    $105 Średnia Oferta:
    4 składanie ofert

    ...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...

    $355 Average bid
    $355 Średnia Oferta:
    96 składanie ofert

    I'm seeking a 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 ...

    $21 Average bid
    $21 Średnia Oferta:
    127 składanie ofert

    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 Średnia Oferta:
    77 składanie ofert

    ...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 Średnia Oferta:
    66 składanie ofert

    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 Średnia Oferta:
    107 składanie ofert

    ...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 Średnia Oferta:
    140 składanie ofert

    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...

    $148 Average bid
    $148 Średnia Oferta:
    157 składanie ofert