Blockchain projects — HireLancer archive

ID / Date Listing

Fiat-Crypto Exchange Platform Development

I'm looking for an experienced developer to create an OTC crypto platform primarily for exchanging fiat (USD, EUR) for crypto (BTC, ETH, USDT) Key Requirements:...

HL-39829277

Solana Arbitrage Scanner & API -- 3

I want a production-ready scanner that lives entirely on Solana and continuously watches Raydium and Jupiter for multi-hop price gaps. It must spot the spread,...

HL-39829079

Integrate Bitcoin Payment Gateway

My crypto-trading company already has its core platform in place; what it lacks is a fully working Bitcoin payment layer. The goal is to let clients deposit and...

HL-39828956

solana dev

Looking for a Solana Developer (PHP Multi-Batching Script) I have a working PHP standalone script that already performs multi-batching for simulated Solana tran...

HL-39828658

Meme Coin Volume Booster Bot

I want a purpose-built bot that quietly boosts the perceived trading activity of my meme coin so new investors see healthy volume the moment they check DexScann...

HL-39827867

Solana yazılımı

Multichain perp DEX, fork of Hyperliquid, with other amenities. Solana will be the main network for the perp DEX.

HL-39827543

K-Drive & Blockchain Integration for WordPress

Job Post Draft Title: Developer Needed for K-Drive API Integration + Blockchain Timestamping (WordPress / PHP / API) Description: We are building a secure onlin...

HL-39825900

Solana Meme Coin Scanner & Sniper

MUST BE USA BASED OTHERWISE DO NOT APPLY! I need a fast, reliable bot that watches Radium in real-time for freshly listed Solana meme coins, evaluates basic mar...

HL-39825752

Build a cryptocurrency arbitrage bot

I am looking for an experienced developer to create a fully functional arbitrage trading bot that operates between two cryptocurrency exchanges. The bot must be...

HL-39825636

ERC-20 VPN Subscription Dashboard

I want to add a blockchain-based system in which ownership of a specific ERC-20 token becomes the “key” that unlocks VPN usage. After each payment, the customer...

HL-39825489

Looking for a Senior React-Native + Blockchain Developer

Hi. I’m looking for an experienced React Native and Blockchain developer to help build a secure, production-ready mobile application for a crypto-fintech platfo...

HL-39824446

USDT Flash Test on Tron

We are seeking a blockchain developer with experience in USDT (TRC20/ERC20/BEP20) transaction simulations to build a Flash USDT Sender software. ⚠️ Important No...

HL-39824133

Solana Arbitrage Scanner & API -- 2

I want a production-ready scanner that lives entirely on Solana and continuously watches Raydium and Jupiter for multi-hop price gaps. It must spot the spread,...

HL-39824048

Solana Arbitrage Scanner & API

I want a production-ready scanner that lives entirely on Solana and continuously watches Raydium and Jupiter for multi-hop price gaps. It must spot the spread,...

HL-39823581

BSC Flash-Loan Arbitrage Contract

I want a production-ready flash-loan arbitrage system built specifically for Binance Smart Chain. The core idea is to take instantaneous loans, scan two BSC-bas...

HL-39823455

Mobile App Developer Needed for Initial Version of a Crypto Mining App

I need help turning my wire-frames for a crypto-mining simulator into a working Android app. The first build is intentionally lean: no blockchain hooks, no toke...

HL-39823508

Solana Meme Coin Automated Trading Bot

Automated Meme Coin Trading Bot – Requirement Summary 1. Market Filters Volume & Liquidity Filters to only trade tokens with healthy activity. 1 - Tokens above...

HL-39823157

React Web3 Crypto Dashboard Build

I need a developer who can turn it into a fully-functional, Web3-enabled transaction dashboard. The core purpose is straightforward: give users one place to man...

HL-39823142

Senior Blockchain & DeFi Solidity Expert | Tokenomics & Liquidity Optimization

I am putting together a next-generation token suite that must live simultaneously on Ethereum (ERC20), Binance Smart Chain (BEP20) and Tron (TRC20). The core id...

HL-39822815

Project: Development of a Crypto Exchange Platform (Web + Mobile App)

We are a startup aiming to build a simple and user-friendly platform where users can swap cryptocurrencies. Our goal is to create a straightforward crypto excha...

HL-39822698

Launch Blockscout Explorer

My Ethereum-based chain is already live and fully synced; what’s missing is a public block explorer so everyday users can follow transactions, token movements,...

HL-39822729

Solana Developer

Looking for a Solana Developer (PHP Multi-Batching Script) I have a working PHP script that already performs multi-batching for Solana transactions, but it does...

HL-39822400

Fix Miningcore SHA256 Vardiff

My SHA256 pool is online and shares are trickling in, yet a 200 TH/s rig rented through MiningRigRentals barely registers 0–30 TH/s once it connects. The same h...

HL-39821016

US Ethereum DeFi Contract Dev

I’m building a new DeFi protocol on Ethereum and need a Solidity developer who is physically based in the United States so we can align on compliance questions,...

HL-39819597

DEMO BLOCKCHAIN DAPP DEVELOPER -- 2

We are looking to build a visually polished, fully interactive, frontend-only prototype ("Phase 0") for our blockchain certification DApp. This sandbox will sim...

HL-39819612

Solana Smart Contract Modifications & Set-Up

PLEASE DO NOT BID IF YOU HAVE NOT CHECKED ALL SPECIFICATIONS OF PROJECT. PROJECT SPECIFICATIONS WILL NOT CHANGE SO YOUR POSTED BID AND DEADLINE WILL BE FINAL. N...

HL-39819384

DEMO BLOCKCHAIN DAPP DEVELOPER

We are looking to build a visually polished, fully interactive, frontend-only prototype ("Phase 0") for our blockchain certification DApp. This sandbox will sim...

HL-39819065

BSC Contract With Cross-Interactions

I The goal is to let my contract trigger actions on other deployed BSC contracts, while also updating its own state whenever those contracts broadcast specific...

HL-39818842

Ethereum Video NFT Marketplace

We’re looking for experienced blockchain development service to help bring InnovaRise to life – a premium NFT project that blends Bitcoin history with video-bas...

HL-39818501

React & Blockchain Upgrade Project

I already have a production web app running on React, Express and MongoDB, but I’m ready to push it much further. First, the UI needs a refresh to match the new...

HL-39818296

Trust Wallet Transfer Assistance

I hold the secret recovery phrase to a Trust Wallet that belonged to my late partner. My goal is to move those funds into a different Trust Wallet that I have a...

HL-39818050

Aave Flash Loan Smart Contract

I need a skilled developer to create a smart contract in Solidity for lending and borrowing assets on Aave. Requirements: - Build a secure and efficient smart c...

HL-39817772

Nextcloud-Ethernity Cloud Enclave App & Node.js Bridge

Nextcloud Ethernity Cloud Enclave App (WalletConnect, On-chain Attestation) We’re hiring an experienced developer (or small team) to build a Nextcloud app that...

HL-39817809

Windows Tron USDT Flasher

I need a Windows-based tool that can flash USDT on the Tron blockchain. The application must connect directly to the Tron network, craft and broadcast the trans...

HL-39817720

Ethereum DeFi Smart Contract Developer

I'm seeking an experienced blockchain developer to build a DeFi smart contract on Ethereum. The contract will need to support: - Staking - Lending and borrowing...

HL-39817431

Flash USDT Transaction App

I’m looking to have a small desktop application built that lets me initiate USDT “flash” transfers—the goal is to move token balances quickly, have them show up...

HL-39817388

Excel-Based Flash USDT Tool

I need a developer who can rebuild my flash USDT solution so it runs entirely inside Excel. The goal is to replicate the same fast-transfer logic I already use,...

HL-39817292

Experienced Blockchain developer for Dapps development

I’m reaching out to explore a potential collaboration in blockchain development that I believe aligns well with your expertise. This project, with a timeline of...

HL-39817105

Full-Feature Crypto Presale Site

I need a modern, sleek presale website for my CRPX token that mirrors the smooth experience investors expect from today’s best launches. The smart contract is r...

HL-39817150

Fork EVM Chain POA & Explorer -- 2

I am ready to launch a fresh EVM-based network called Universe Blockchain and I need an engineer who has already forked Geth or similar clients multiple times....