I build and audit smart contracts and I know exactly where they break.
Most developers write contracts. Most security researchers find bugs. I do both, which means I can ship Web3 products that are secure from day one not after an exploit drains your protocol.
What I do:
Smart contract development (ERC20, ERC721, DeFi, staking, DAOs) on Ethereum, BSC, and EVM-compatible chains
Smart contract security audits reentrancy, access control, integer overflow, flash loan attacks, and more
Full-stack Web3 dApps (frontend + Solidity + backend APIs)
Penetration testing for Web3 projects and backend systems
My stack: Solidity · Hardhat · Foundry · Python · Node.js · React · Web3.js · Ethers.js
I've worked on Cardano NFT projects (SpaceBudz, CNFT ecosystems), DeFi tools, and automation bots. I write clean, gas-optimized code and deliver detailed audit reports with proof-of-concept exploits and fixes not just a list of warnings.
If you're launching a protocol, token, or dApp and need it done right and done securely, let's talk.
Blockchain
Blockchain Development
Back-End Development
API Testing
Penetration Testing
Smart Contract Development
Solidity
web3.js
Hardhat
DeFi
Python
Chidiuso Christopher I.
Lagos, Nigeria
$32/hr
5.0
12 jobs
✅ Value-Driven - I focus on delivering value regardless of any issues that may arise
✅ Big On Feedback - My clients are always kept in the loop
✅ Product-Centric - Before building, I ask 'why?' in order to improve product offerings. No one needs software, users would not use
I have over 6 years of experience with Python, PHP, javaScript, Django, flask, PHP, Kafka etc.
I have built products like complex data pipelines, complex websites, Rest Apis, Microservices, WebSocket based apps etc.
Ethereum
Blockchain Architecture
Python
SQL
Flask
Solidity
JavaScript
Kubernetes
PHP
Microservice
Docker
Django
Golang
DevOps
OKTA
Symfony
Dipe K.
Lagos Island, Nigeria
$20/hr
5.0
14 jobs
I hired Kehinde a year ago for a small WordPress task to test out his skills, And oh boy did he deliver. In fact so much i have trusted him with all the development of my startup - Founder, wellnessplus.
Fullstack developer, Telegram Bot, Blockchain project manager & developer, Blockchain Game developer, Fullstack blockchain & smart contract Dapp engineer & auditor.
I am an excellent and passionate MERN full stack block chain developer.
✅Skills & tooling:
🏆Front-end 🏆
✔ React.js, Redux, Zustand
✔ TypeScript
✔ Styled-component, Tailwindcss
✔ Material UI, Ant Design, BootStrap, HTML, CSS, Canvas
✔ Wordpress
🏆Back-end 🏆
✔ JavaScript - Node.js, Express.js
✔ PHP - Laravel, WordPress
✔ TypeScript
✔ MySQL & MongoDB - Prisma
✔ Telegram bot
✔ Wordpress
🏆Blockchain🏆
✔ Swap, Liquidity, Staking, Farming, bridge forking Pancakeswap, Uniswap
✔ Solidity, blockchain game
✔ Smart Contract, Token, NFT, ERC20, BEP20, TRC20, ERC721, ERC1155, EIP2535, Upgradeable smart contract
✔ Blockchain monitor
✔ Web3.js, ethers.js, Hardhat, Mocha, Chai, Brownie
✔ Wordpress
✅ 𝐏𝐫𝐨𝐟𝐞𝐬𝐬𝐢𝐨𝐧𝐚𝐥 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐎𝐟𝐟𝐞𝐫𝐞𝐝:
✔ Presale Launchpad Development
✔ Decentralized Applications (dApps)
Initial DEX Offerings (IDO) | Initial Coin Offerings (ICO) | Security Token Offerings (STO)
✔ Smart Contract Development, testing & Auditing
✔ NFT Minting & Marketplace Solutions
✔ Tokenization & Digitization of real-life asset - custom ERC20, ERC721, ERC1155
✔ Tokenized & Digitization of Real Estate Platforms
✔ DeFi Applications
✔ Staking & Lending Platforms
✔ Yield Farming Protocols & Liquidity Mining Solutions
✔ Decentralized Exchanges (DEX) & Centralized Crypto Exchange Development
✔ Advanced Trading Platforms
✔ Governance Token Solutions & DAO(Decentralized autonomous organization)
✔ Peer-to-Peer (P2P) Lending & Borrowing Protocols
✔ Proficient in Hardhat for deploying & managing blockchain applications across Ethereum test & production environments
✔ Tokenomics Design & Strategy
✔ Development of Decentralized Autonomous Organizations (DAOs)
✔ Exchange Development (CEX | DEX)
✔ Blockchain Whitepaper Writing
✔ Trading Bot Development
✔ Telegram Bot Development
✔ Wordpress development
🔒 Security & Sustainability: I prioritize building secure & reliable solutions designed to stand the test of time. Your peace of mind is always my top priority.
✨ Why Choose Me?
I go beyond delivering solutions—I build lasting partnerships. Driven by a passion for innovation and a commitment to excellence, I help my clients succeed in the digital age.
Let’s turn your vision into something extraordinary. Contact me today, and let’s bring your ideas to life!
Ethereum
Blockchain
Blockchain Development
Smart Contract
Blockchain, NFT & Cryptocurrency
Solidity
Web3
React
Ethers.js
ExpressJS
Node.js
JavaScript
NFT
DApp Development
Full-Stack Development
Olusola A.
Ifo, Nigeria
$35/hr
4.9
102 jobs
Full Stack Blockchain Developer | Ethereum | Solidity | Rust | Solana | EVM | Web3.js | Anchor | Next.js
Looking for a secure, gas-optimized smart contract or a high-performance Solana program? I help Web3 founders, startups, and technology companies turn blockchain ideas into production-ready applications across Ethereum, Solana, and EVM-compatible networks.
From smart contract architecture and DApp development to testing, optimization, and mainnet deployment, I build decentralized applications focused on security, scalability, reliability, optimized gas usage, and real-world usability.
My expertise includes Solidity smart contracts, Rust/Solana programs, EVM development, Web3.js integrations, NFTs, Anchor Framework, Next.js DApps, token development, DeFi applications, and blockchain integrations.
I specialize in developing reliable blockchain products — not just prototypes. Whether you need a custom smart contract, DeFi platform, Web3 application, token ecosystem, or complete decentralized infrastructure, I help transform your idea into a functional product designed for real users and long-term growth.
My approach combines technical expertise with scalable architecture to deliver efficient, maintainable, and future-ready blockchain solutions.
My Blockchain Development Services:
Smart Contract Development:
Solidity smart contract development.
ERC-20, ERC-721, and ERC-1155 token development.
Token creation and deployment.
Staking, vesting, governance, and reward systems.
Smart contract testing, optimization, and security improvements.
Contract verification and mainnet deployment.
Ethereum & EVM Development:
Ethereum blockchain development.
EVM-compatible networks: Polygon, BNB Chain, Arbitrum, Optimism, and Base.
Solidity development.
Web3 integrations.
Layer 2 blockchain solutions.
Wallet and blockchain infrastructure integration.
Web3 DApp Development:
Full-stack decentralized applications.
React.js / Next.js Web3 applications.
Node.js backend development.
Web3.js and Ethers.js integration.
MetaMask, WalletConnect, and Phantom wallet integration.
User dashboards, admin panels, and blockchain-powered platforms.
DeFi Development:
Decentralized exchanges (DEX).
AMM protocols.
Liquidity systems.
Staking platforms.
Yield farming applications.
DAO and governance systems.
DeFi MVP development.
Solana Development:
Solana token development.
SPL token creation.
Solana ecosystem integration.
Phantom wallet integration.
Rust-based blockchain solutions.
Blockchain MVP Development:
I help founders move from concept to a working blockchain MVP ready for testing, investors, and market launch.
Services include:
Blockchain product architecture.
Smart contract MVP development.
Token-based platforms.
Web3 startup solutions.
Prototype-to-mainnet development.
Scalable blockchain infrastructure.
How I Work:
Understand → Build → Test & Optimize → Review → Deploy
I first understand your project requirements and technical goals, then design and build the required blockchain components. Before deployment, I test the functionality, review the implementation, optimize where necessary, and prepare the solution for the target network.
What You Can Expect:
Depending on your project requirements, you can receive a tested and deployment-ready blockchain solution with the required smart contracts, Web3 integrations, frontend/backend components, wallet connectivity, and blockchain functionality.
My goal is to deliver maintainable solutions that are built to support real users and future growth.
My Top Technologies:
Blockchain:
Ethereum | EVM | Solana | Polygon | BNB Chain | Arbitrum | Optimism | Base
Smart Contracts:
Solidity | Rust | ERC Standards | SPL Tokens | OpenZeppelin
Web3:
Web3.js | Ethers.js | WalletConnect | MetaMask | Phantom
Frontend & Backend:
React.js | Next.js | Node.js | APIs | Blockchain Integrations
Why Clients Choose Me:
Specialized Blockchain Developer focused on Ethereum, EVM, Web3, and DeFi.
Experience building production-ready blockchain solutions.
Strong understanding of smart contracts and decentralized applications.
Security-focused development approach.
Clear communication and reliable delivery.
Focused on creating scalable products that can grow beyond the MVP stage.
If you are building a Web3 startup, launching a blockchain product, developing a DeFi platform, or need an experienced Ethereum/EVM developer, I can help you build and deploy your solution.
Let’s discuss your blockchain project and turn your idea into a working product.
Ethereum
Blockchain
Blockchain Architecture
Blockchain Development
Smart Contract
Cryptocurrency
Smart Contract Development
Blockchain Platform
Crypto Marketing
ICO Marketing
ReddCoin
Solidity
Blockchain, NFT & Cryptocurrency
JavaScript
Node.js
web3.js
Blockchain Development Framework
PHP
API
React
Femi A.
Lagos, Nigeria
$25/hr
5.0
4 jobs
I build decentralized applications that work. If you need a DeFi protocol, token launch platform, or blockchain fork deployed quickly and securely, I can deliver.
Recent Projects:
✅ Aave lending protocol clone (full-stack DeFi)
✅ PancakeSwap DEX fork with custom tokenomics
✅ Pinksale launchpad implementation
✅ DEX aggregator with real-time data visualization
What You Get:
• Clean, auditable smart contracts (Solidity/Rust)
• Full-stack web3 integration (React/Next.js + Web3.js/Ethers.js)
• API integration for on-chain/off-chain data
• End-to-end project management from brief to deployment
• Regular updates – I communicate daily via your preferred channel
Tech Stack:
Backend: Node.js, NestJS, Express, PostgreSQL, MongoDB
Frontend: React, Next.js, TypeScript, Tailwind, Material-UI
Blockchain: Solidity, Hardhat, Ethers.js, Web3.js
Mobile: React Native, Swift, Android Native
Let's build something secure and scalable. Message me with your project details.
Blockchain
Web Application
JavaScript
React
Node.js
Web Development
RESTful API
Cryptocurrency
Computer Engineering
Web3
Front-End Development
Computer
Solidity
NFT Marketplace
NFT Minting
Tim O.
Lagos Island, Nigeria
$45/hr
5.0
4 jobs
Blockchain Developer & Smart Contract Engineer | 7+ years building Web3 platforms. Founder of Luxen Labs. 40+ production-ready projects including DeFi protocols, NFT marketplaces, token launchpads, and AI-integrated dApps that processed millions in transactions.
I help Web3 startups and enterprises launch secure, scalable blockchain solutions,from smart contracts to complete dApps. Whether you're building a DeFi protocol, NFT marketplace, or token launchpad, I deliver audit-ready code that ships on time and performs under real-world conditions.
Recent Results:
- Fairlaunch Solana Launchpad: Delivered seamless token presales and staking system with $500K+ in early transactions
- Paal AI Integration: Built blockchain-powered AI features that processed 10M+ on-chain interactions
- Gambit Markets: Launched sports betting platform handling 50K+ predictions with zero downtime
- Delivered scalable solutions for Adrise AI, MicroGPT, and 35+ other Web3 projects
What I Deliver
Smart Contract Development
✅ Solidity (Ethereum, Polygon, BSC, Arbitrum, Optimism) – ERC-20/721/1155, DeFi protocols, gas optimization
✅ Rust (Solana, Anchor) – SPL tokens, high-performance dApps, Solana program development
✅ Move (Aptos, Sui) – Next-gen blockchain development for emerging L1s
Security-first development with audit readiness built in from day one
DeFi & Tokenomics
✅ Staking platforms, liquidity pools, yield farming protocols
✅ Token launches with custom vesting, distribution, and governance
✅ DEX integrations, AMM protocols, cross-chain bridges
Economic modeling and tokenomics consulting
NFT & Digital Assets
✅ Full-featured NFT marketplaces with royalties, metadata, and trading
✅ Minting engines, launchpads, and reveal mechanics
✅ GameFi integrations, NFT staking, dynamic NFTs
✅ ERC-721, ERC-1155, and Solana NFT standards
Frontend & Web3 Integration
✅ Modern, responsive Web3 UIs: React, Next.js, TypeScript, Tailwind CSS
✅ Wallet integrations: MetaMask, Phantom, WalletConnect, Coinbase Wallet
✅ Smart wallet implementation (ERC-4337), embedded wallets for seamless onboarding
✅ Real-time blockchain data visualization and dApp dashboards
Backend & Infrastructure
✅ Scalable API development: Node.js, Go, Python
✅ Database architecture: PostgreSQL, MongoDB, Redis, Firebase
✅ Cloud deployment: AWS, Vercel, Railway with CI/CD pipelines
✅ Blockchain infrastructure: RPC nodes, indexers, event listeners
Payment & On-Ramps
✅ Fiat-to-crypto integrations: Stripe, MoonPay, Transak, Banxa
✅ Multi-payment solutions for Web3 products
✅ Subscription models and recurring crypto payments
AI + Web3
✅ Trading bots with automated strategies across DEXs
✅ AI-powered market analysis and prediction models
✅ Smart automation for blockchain workflows
Why Clients Choose Me
✅ Audit-Ready Development – Every line of code is written with security as priority #1. I follow industry best practices, implement comprehensive testing, and design contracts that pass professional audits.
✅ End-to-End Execution – From product architecture to mainnet deployment, I handle the full development lifecycle. You get a partner who understands both the technical and business sides of Web3.
✅ 40+ Successful Launches – I've shipped production applications that handle real transactions, real users, and real capital. My code has processed millions in on-chain value.
✅ Partnership Mindset – Your success is my success. I treat every project with the care and attention it deserves, offering strategic guidance beyond just coding.
✅ Communication & Transparency – Clear updates, honest timelines, and proactive problem-solving. I keep you informed every step of the way.
Tech Stack
- Smart Contracts: Solidity, Rust, Move, Hardhat, Foundry, Anchor, OpenZeppelin
- Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS, Material-UI
- Backend: Node.js, Python, Go, Express.js, REST APIs, GraphQL
- Web3 Libraries: Ethers.js, Web3.js, viem, @solana/web3.js, WalletConnect SDK
- Blockchain Platforms: Ethereum, BSC, Solana, Arbitrum, Optimism, Aptos, Sui
- Databases: PostgreSQL, MongoDB, Redis, Firebase, Supabase
- DevOps & Tools: AWS, Docker, Git/GitHub, CI/CD pipelines, Vercel, Railway
- Testing & Security: Hardhat test suites, Foundry fuzzing, Slither, MythX, Aderyn
Services I Don't Offer
To maintain quality and focus, I don't work on:
- Copy/paste template contracts without customization
- Projects without clear scope or budget
- Illegal or unethical blockchain schemes
Let's Build Your Web3 Vision
Whether you're launching a DeFi protocol, building an NFT marketplace, creating a token launchpad, or need a trusted blockchain architect for your startup, I'm here to help you ship secure, scalable products that perform.
Ready to start?
📩 Click "Invite" or send me a message.
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Blockchain Development, Web3 Developer, Smart Contract Developer, Solidity Developer, Rust Developer, Move Developer, Ethereum Developer, Solana Developer, DeFi Developer, NFT Development, Smart Contract
Ethereum
Blockchain
Node.js
TypeScript
React
Next.js
JavaScript
Cryptocurrency
Rust
Solidity
web3.js
Ethers.js
Smart Contract Development
API Development
Web Development
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