Ethereum Jobs

I’m commissioning a full smart-contract build, from architecture through main-net deployment. The application layer itself is still open-ended, so you’re free to recommend the most suitable chain—Ethereum, BNB Smart Chain, Solana or another EVM-compatible network—provided it meets typical requirements for security, scalability, and broad wallet support. Here’s what the engagement looks like: • Scope: write Solidity (or comparable) contracts, implement upgradeability if justified, optimise gas, and document each function clearly. • Quality: unit tests in Hardhat/Foundry or Truffle with ≥90 % coverage, plus a static-analysis report (Slither, MythX, or similar) to verify there are no critical vulnerabilities. • Deployment: scripts for ...

Our new platform, CritiQ, needs a suite of robust, reusable smart contracts. I already have the product vision, tokenomics draft, and high-level user flows; now I’m ready to turn that vision into audited code. Here’s what I expect from this engagement: • Architecture & specification – refine requirements with me and translate them into a concise technical spec. • Development – implement the contracts in Solidity using best-practice libraries such as OpenZeppelin, with comprehensive unit tests in Hardhat or Truffle. • Security & gas optimisation – apply industry-standard patterns, write clear modifiers, and run automated analysis (Slither, MythX, or similar) before handing the code over for an external audit. • Deployment &am...

Im looking to create my own cryptocurrency on the solana blockchain. 5 minutes work 1 billion coins. As low price as possible. 0.000000001$ select all coins - transaction fees on/earn by transactions on. select all coins and release all coins

Im looking to create my own cryptocurrency on the solana blockchain. 5 minutes work 1 billion coins. As low price as possible. 0.000000001$ select all coins - transaction fees on/earn by transactions on. select all coins and release all coins

1.-PROJECT TITLE (Short & Professional) Development of a Blockchain-Based Decentralized Authentication Prototype Integrated with SQL Server 2.-BULLET POINT VERSION (If it asks for key points) You can paste this in the bullet/summary section: Academic research prototype (not a full hospital system) Decentralized authentication using blockchain (smart contract) Integration with Microsoft SQL Server Medical records stored in SQL Server (not on blockchain) Blockchain used for authentication hash validation Architecture documentation required Basic performance observation (authentication response time) Conceptual alignment with GDPR and HIPAA (no legal certification required) Full source code and technical explanation required 3.-FULL DESCRIPTION (Complete Version to Post) Hel...

I’m ready to launch my own BEP-20 token on Binance Smart Chain and need a developer who can handle the full smart-contract build and deployment. The token must follow the standard BEP-20 specification and include a Minting function so I can expand the supply later when needed. Here’s what I expect from you: • Write a clean, well-commented Solidity contract (OpenZeppelin libraries preferred). • Configure minting so only the owner (my wallet) can call the function. • Deploy the contract to testnet first, then mainnet once I have verified everything. • Verify the source code on BscScan and hand over ownership. • Supply all source files plus a short read-me explaining contract variables, how to mint, and any safety considerations. I already have...

I’m planning to launch a new blockchain-based product and I need an experienced developer who can guide me from concept to main-net deployment. At this stage I’m flexible about the exact stack—Ethereum, Binance Smart Chain, Solana or another network—so I value someone who can weigh the trade-offs and recommend the best fit for scalability, fees, security, and time-to-market. The broad vision includes designing the core smart contracts, creating a native token, integrating a secure wallet flow, and building out any web or mobile front-end required for users to interact with the chain. I also want clear documentation and the test coverage needed for a smooth audit. Deliverables I’d like to see: • Technical roadmap outlining the chosen architecture, toolin...

I’m ready to launch my own BEP-20 token on Binance Smart Chain and need a developer who can handle the full smart-contract build and deployment. The token must follow the standard BEP-20 specification and include a Minting function so I can expand the supply later when needed. Here’s what I expect from you: • Write a clean, well-commented Solidity contract (OpenZeppelin libraries preferred). • Configure minting so only the owner (my wallet) can call the function. • Deploy the contract to testnet first, then mainnet once I have verified everything. • Verify the source code on BscScan and hand over ownership. • Supply all source files plus a short read-me explaining contract variables, how to mint, and any safety considerations. I already have...

Hi I will share the details with the shortlisted candidates. Thanks

Hi I will share the details with the shortlisted candidates. Thanks

I already have a draft smart contract, but it needs a careful review and a few modifications before going live. Once the code is solid, I want it deployed on Ethereum (that is my first choice, though I’m open to discussing BSC or Polygon if you feel they offer clear advantages). After deployment, the contract must be fully integrated into my website so users can interact with it through MetaMask. A smooth, reliable Web3 flow is essential—wallet connection, transaction signing, on-chain confirmations, and any UI feedback should feel seamless and secure. The job breaks down into three main parts: • Audit, adjust, and finalise the existing contract code, then compile, test, and verify it on the chosen network. • Deploy the verified contract and wire it up to the s...

Need a Solidity dev for a simple MVP: team-based NFT positions + monthly oracle update + reward claim. Contracts only (no frontend). Stack: Solidity + OpenZeppelin + Foundry. Must include tests, deployment script, and clean documentation.

I need a brand-new ERC-20 smart contract built from scratch, then deployed to the Ethereum network. The token must include minting, burning, and pausable functionality, implemented with clean, upgrade-friendly Solidity code that follows current best practices (OpenZeppelin libraries, Hardhat or Foundry for testing). Please create, test, and deploy the contract, then hand over everything required for future maintenance. Deliverables • Verified Solidity source code with mint, burn, and pause modules • Full test suite covering core logic and edge cases • Deployment scripts and step-by-step notes (addresses, gas used, etherscan verification) • Final token address on Ethereum mainnet or a clearly documented test deployment if mainnet is postponed Acceptance criteria...

Hi I will share the details with the shortlisted candidates. thanks

Design The Role We are looking for a Full Stack Engineer to take full ownership of building a non-custodial crypto payment gateway for USDC on Ethereum. You will not just be "writing code" from a ticket; you will be responsible for the entire delivery, including infrastructure, security, database design, and the admin dashboard. You are effectively acting as the Founding Engineer/CTO for this build. You must be comfortable making architectural decisions, setting up CI/CD, and securing a financial application. The System A compliant, on-chain payment rail that: Generates unique, one-time deposit addresses for users (HD Wallets). Detects incoming USDC transactions (Chain Indexing). Sweeps funds to a central treasury using EIP-3009 (Gasless Permits) to minimize ETH usage. P...

Hi I will share the details with the shortlisted candidates. Thanks

Our new platform, CritiQ, needs a suite of robust, reusable smart contracts. I already have the product vision, tokenomics draft, and high-level user flows; now I’m ready to turn that vision into audited code. Here’s what I expect from this engagement: • Architecture & specification – refine requirements with me and translate them into a concise technical spec. • Development – implement the contracts in Solidity using best-practice libraries such as OpenZeppelin, with comprehensive unit tests in Hardhat or Truffle. • Security & gas optimisation – apply industry-standard patterns, write clear modifiers, and run automated analysis (Slither, MythX, or similar) before handing the code over for an external audit. • Deployment &am...