Smart Contracts projects — HireLancer archive

ID / Date Listing

Experienced Solidity Developer for Bootcamp teaching

Experienced Solidity Developer (Part-Time Teaching Role – 3 Hours, Global Web3 Bootcamp) About the Project: We are Borderless Coding, a global tech education co...

HL-40111770

Crypto Mining & Token Swap Site

you can create a demo to see it and who make a better i contact I need a full-featured web DApp that lets visitors connect with MetaMask (or any EVM-compatible...

HL-40106831

Track Stolen Ethereum Wallet

Someone drained my Ethereum holdings and I need a skilled blockchain analyst to pinpoint the wallet(s) now controlling those funds. I can supply the compromised...

HL-40105697

USDT (TRC20 / ERC20) Transaction Simulation Software – Blockchain Testing & Education

I am looking for an experienced blockchain developer who can either: • Provide a crypto transaction simulation software they have previously built, or • Develop...

HL-40103132

BEP-20 Business Token Development

I need a BEP-20 token deployed on the Binance Smart Chain that will serve a broader business use-case (payments, rewards, and possible future governance once th...

HL-40102974

Web3 DeFi Protocol Developer -- 2

I’m preparing to push a new DeFi protocol from proof-of-concept to main-net and I need a seasoned Web3 developer to make that possible. The core idea and tokeno...

HL-40101920

Integrate Crypto Wallets with Online Store

I have a fully-functional online shop preparing for the 2026 New Year rush, and I now want customers to interact with it through their crypto wallets. The site...

HL-40100075

OTC Bulk NFT Sale Assistance

I hold a sizeable collection of collectible-category NFTs on OpenSea and I’m ready to off-load them in bulk, strictly over-the-counter, without breaking the flo...

HL-40099163

Create Blue Star Blockchain

1. Core Design Goals CPU-only mining (ASIC/GPU resistant) Low entry barrier (runs on consumer hardware) Fair distribution (anti-bot & anti-farm measures) Energy...

HL-40098175

Solana Print-on-Demand Platform

Project Overview – On-Chain Print-On-Demand (Solana / USDC) I’m building a fully on-chain, crypto-native print-on-demand platform where the entire checkout and...

HL-40097544

Web3 DeFi Protocol Developer

I’m preparing to push a new DeFi protocol from proof-of-concept to main-net and I need a seasoned Web3 developer to make that possible. The core idea and tokeno...

HL-40096232

DeFi Protocol Developer Needed

My team is building a new DeFi protocol from the ground up and I need an experienced blockchain developer to architect, code, and thoroughly test the core smart...

HL-40095807

Custom Blockchain Upgrade Needed -- 3

As shown in the images below, reneewallet.com is a wallet + crypto payment project. Payments from other wallets were not reaching the wallets within the project...

HL-40095809

Solidity Protocol Development Experts

I’m building an on-chain protocol and need a seasoned Solidity engineer to take ownership of the smart-contract layer from design through deployment. The work c...

HL-40095642

Custom Blockchain Upgrade Needed -- 2

. All processes for our project below are complete. To receive payments, the main networks (all available) need to be updated and connected. https://reneewallet...

HL-40094960

Custom DeFi Protocol Development

The goal is to take a DeFi protocol from concept to main-net launch. I have the product vision and tokenomics drafted, but the technical build still needs to be...

HL-40093868

Web3 AI Social Platform

项目目标是打造一款以 AI 为驱动、深度融合区块链的 Web3 社交生活空间。核心理念是去中心化与高度安全性并行，让用户在完全掌握数据所有权的同时，体验流畅且智能的互动场...

HL-40093753

Custom dApp Blockchain Development

I am preparing to launch a decentralized application and need an experienced blockchain specialist to guide the entire build—from refining the concept through m...

HL-40093674

Full Solana Presale Platform Build

My goal is to launch a complete presale platform on Solana that takes a user from landing page to successful token purchase in a single, seamless flow. The scop...

HL-40093707

Custom Blockchain Upgrade Needed

. All processes for our project below are complete. To receive payments, the main networks (all available) need to be updated and connected. https://reneewallet...

HL-40091800

Solidity Developer for DApp Build

Our decentralized application is almost ready for prime time; the only component still outstanding is the Solidity layer. I need production-grade smart contract...

HL-40091917

Experienced Developer Required

Build a Crypto + AI Web Experience (Dev Wanted) Contest to identify and hire an experienced developer skilled in Crypto / Blockchain and Web3 dev for AI-powered...

HL-40090056

NFT expert needed

I need a NFT expert for a project

HL-40091013

Senior Blockchain Developer for Soroban Contracts

We're seeking an experienced Senior Blockchain Developer specializing in Soroban smart contracts to enhance and expand our existing smart contract infrastructur...

HL-40088977

ICO Fundraising Website Development

I need an end-to-end website that can securely power an upcoming ICO and make the entire token sale process straightforward for potential investors. The look an...

HL-40087990

Comprehensive Cryptocurrency & Token Development -- 2

I am ready to move forward with the full-scale development of a brand-new cryptocurrency, and I need a partner who can own the technical build from concept to l...

HL-40086974

Digital Currency Source Code Needed

Please do not apply if you want a huge upfront fee. Please do not apply if you want a huge upfront fee. Please do not apply if you want a huge upfront fee. Plea...

HL-40084977

Tron Smart Contract Development

I’m ready to move a new smart-contract idea onto the Tron blockchain and have it fully viewable and verifiable on Tronscan. The high-level specification is writ...

HL-40083553

Fix USDC Transaction Hash Issue

I'm facing an issue with a USDC transaction. The funds are not reaching the designated address due to a hash problem. Transaction details: - Type: Cryptocurrenc...

HL-40082629

Secure BEP20 Wallet Integration Project

Hello, I’m looking to build a secure BEP20 wallet integration using WalletConnect (QR-based connection). This is a production-level, security-sensitive implemen...

HL-40082006

Ethereum Based Web Game Development

Web Game Upgrade & EVM Integration 1. Project Overview Project Name: Project Type: Web -b ased turn - based game (React + Vite frontend, Node.js backend) Goal:...

HL-40081065

Comprehensive Blockchain Development Needed

I’m launching a new initiative that relies on blockchain technology and need a developer who can take it from concept to production. The exact shape of the proj...

HL-40081001

Public Blockchain & DEX Development

I want to launch a brand-new public blockchain that uses a Proof of Work consensus layer and, on top of it, a fully functional decentralized exchange. The chain...

HL-40080753

Integrate WalletConnect in PHP Application for Smart Contract Interactions -- 4 - 20/12/2025 13:14 EST

I need assistance integrating WalletConnect into my PHP application to enable smart contract interactions. The integration should be seamless and functional, al...

HL-40079274

Blockchain Implementation for Healthcare Data Interoperability (Cross-Chain)

I’m building a cross-chain solution that lets hospitals and clinics exchange patient medical records while keeping every byte secure. The anchor will be Ethereu...

HL-40077972

Mintable Burnable BEP-20 Token

I want a BEP-20 smart contract on Binance Smart Chain that supports both minting and burning. The contract must follow the open-standard interface so it is inst...

HL-40077840

Fix MetaMask Integration in React Store

My custom-built React Christmas store lets shoppers pay with crypto through MetaMask, but right now the products never reach the wallet handshake. The dApp load...

HL-40077089

Political Prediction Market on Blockchain

I’m building a Polymarket-style exchange dedicated solely to political events—elections, referendums, leadership contests and similar milestones. Every user mus...

HL-40075065

Solidity, Hyperledger & Wallet Tests

I am building a blockchain-based solution and need help on three core tracks that run in parallel: writing secure Solidity smart contracts, wiring those contrac...

HL-40074891

Comprehensive Cryptocurrency & Token Development

I am ready to move forward with the full-scale development of a brand-new cryptocurrency, and I need a partner who can own the technical build from concept to l...