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United Arab Emirates
$95/hr
100%
Job Success
$700K+ earned
Available now
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I build custom trading bots and algorithmic trading systems for crypto, forex, stocks, futures, and options, with automated execution that runs faster, cleaner, and more reliably than what you are running today.
100+ completed projects. $700K+ earned. 100% Job Success.
I am Mahbub Shuvo, Founder of Core Devs Ltd. I lead a 35+ person team focused on trading automation, AI powered execution, blockchain infrastructure, and full stack development, trusted by hedge funds, prop trading firms, DeFi protocols, and independent traders worldwide. If your setup is too slow, too rigid, or breaks when markets move, that is exactly what I fix.
What I Build:
Custom Trading Bots and Algorithmic Trading Systems
Execution engines for crypto, forex, stocks, futures, options, and commodities. Sniper bots, arbitrage bots, grid trading, scalping bots, market making engines, copy trading, signal bots, MEV bots, and fully automated strategies. Python, Node.js, Rust, C++, MQL4/MQL5. Sub 300 ms latency. Solana sniper bots, cross exchange crypto arbitrage, futures scalping, and options execution.
Broker and Exchange Integrations
Direct API integration with Binance, Bybit, KuCoin, Coinbase, Kraken, OKX, MEXC, Hyperliquid, Interactive Brokers (IBKR/TWS), Alpaca, TradeStation, Schwab, OANDA, FXCM, cTrader, DXTrade, Tradovate, and NinjaTrader. REST APIs, WebSocket feeds, and FIX protocol. Low latency order routing, order book parsing, multi broker orchestration, and 24/7 uptime. DEX: Uniswap, Raydium, Jupiter, PumpFun, PancakeSwap, SushiSwap.
MetaTrader and Expert Advisor Development
Custom EAs for MetaTrader 4 and MetaTrader 5 in MQL4/MQL5. Forex trading bots, scalping EAs, news trading bots, hedging systems, and risk management. MT4 and MT5 bridges to external APIs, copy trading systems, and signal services. Full backtesting, optimization, and deployment.
TradingView, PineScript, and Webhook Automation
Custom PineScript indicators and strategies, webhook to broker execution pipelines, and alert based trading systems. TradingView signals connected to any broker or exchange, from simple alert forwarding to multi leg strategy automation.
AI Enhanced Trading and Quantitative Systems
AI signal processing, pattern recognition, sentiment analysis, technical analysis engines, and adaptive execution. Backtesting with PnL analytics, drawdown tracking, and Sharpe optimization using pandas, NumPy, scikit learn, TensorFlow, backtrader, and vectorbt. Predictive ML models and reinforcement learning execution. Systematic trading, mean reversion, momentum, and trend following. I build the system, you keep the alpha.
DeFi Automation and Smart Contracts
Solidity and Rust contracts for liquidity management, staking, swaps, yield farming, flash loans, and on chain execution. AI assisted monitoring and anomaly detection across Ethereum, Solana, Base, BSC, Polygon, and Arbitrum, from DEX bots to full protocol infrastructure.
Telegram Bots, Discord Bots, and Dashboards
Telegram trading bots with alerts, one click execution, portfolio tracking, and whale watching. Discord bots with signal forwarding, copy trading, and moderation. Web dashboards with live charts, analytics, and multi exchange views.
Tech Stack:
Languages: Python, Node.js, Rust, Solidity, JavaScript, TypeScript, MQL4, MQL5, PineScript, C++
Blockchain: Web3.js, Ethers.js, Solana Web3, Anchor, Hardhat, Truffle
AI and ML: TensorFlow, PyTorch, scikit learn, pandas, NumPy, OpenAI API, NLP, LLM
Trading Platforms: MetaTrader 4, MetaTrader 5, TradingView, Interactive Brokers TWS, QuantConnect, NinjaTrader, TradeStation, Alpaca, cTrader, MultiCharts
Exchange APIs: Binance, Bybit, KuCoin, Coinbase, Kraken, OKX, Hyperliquid, IBKR, Alpaca, OANDA, FXCM, Schwab, Uniswap, Raydium, PumpFun, Jupiter, CCXT
Backtesting: backtrader, vectorbt, Zipline, QuantConnect LEAN
Infrastructure: AWS, Docker, Redis, RabbitMQ, PostgreSQL, MongoDB, WebSockets, Kafka
What Clients Hire Me For:
Crypto trading bots (sniper, MEV, arbitrage, copy trading, signal bots). Algorithmic trading for forex, stocks, futures, options, and commodities. Expert Advisors for MetaTrader 4 and MetaTrader 5. Interactive Brokers automation and systematic fund execution. TradingView PineScript and webhook automation. AI trading signals, backtesting engines, and quantitative research. DeFi development, smart contract audits, and on chain automation. Multi broker API integration and trading infrastructure. Telegram and Discord bots and trading community tools. Trading dashboards, portfolio trackers, and analytics platforms.
Industries: Cryptocurrency and DeFi, Forex and CFD, Equities and Options, Futures and Derivatives, FinTech, Quant Trading, Prop Firms, and Hedge Funds.
Clear communication, weekly updates, and long term support. I do not disappear after delivery. Your system keeps running as markets evolve.
Ready to automate? Send me a message with your setup and goals, and I will outline a plan on a quick call.
Mahbub S.
has worked
.
Associated with
Core Devs LTD
$600K+
earned
$20/hr
100%
Job Success
$10K+ earned
Available now
Offers consultations
Start of list.
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Blockchain is easy to pitch.
Building something people actually use is where things get interesting.
Over the last 10+ years, I've worked across software engineering, product development, and blockchain infrastructure, helping startups and businesses turn ideas into working products.
A large part of my recent work has focused on:
• Carbon Credit Tokenization
• Real Estate Tokenization
• RWA (Real World Asset) Platforms
• Smart Contracts
• DeFi Applications
• Web3 Products
• Exchange & Trading Infrastructure
I've worked on projects ranging from token ecosystems and blockchain integrations to SaaS platforms, backend systems, automation tools, and customer-facing applications.
One thing I've learned over the years is that most projects don't fail because of technology.
They fail because requirements aren't clear, complexity gets out of control, or important technical decisions are postponed until they become expensive.
That's usually where I get involved.
Sometimes it's a new product.
Sometimes it's an existing platform that needs to scale.
Sometimes it's a project that's been through multiple developers and needs a practical way forward.
What I Can Help With:
Asset Tokenization & RWA
✔ Carbon Credit Platforms
✔ Real Estate Tokenization
✔ Fractional Ownership Models
✔ Asset-Backed Token Solutions
✔ Investor Portals
✔ RWA Infrastructure
Blockchain & Web3
✔ Smart Contract Development
✔ ERC20 / BEP20 Tokens
✔ Wallet Integrations
✔ dApps
✔ DeFi Platforms
✔ NFT Infrastructure
✔ Web3 Integrations
✔ Staking & Reward Systems
Exchange & Trading Systems
✔ Crypto Exchanges
✔ Matching Engine Integrations
✔ Trading Platforms
✔ Wallet Management
✔ Payment Processing
Software Engineering
✔ SaaS Platforms
✔ Backend Systems & APIs
✔ AI Integrations
✔ Automation Solutions
✔ Cloud Infrastructure
✔ System Architecture
✔ Database Design & Optimization
Technology Stack
Blockchain: Solidity, Ethereum, Web3, DeFi, ERC20, BEP20, Tokenization, RWA Infrastructure
Backend: Node.js, TypeScript, PHP, Laravel, Python, REST APIs, GraphQL, Microservices
Frontend: React, Next.js, JavaScript
Infrastructure: AWS, Docker, Linux, CI/CD
Databases: PostgreSQL, MySQL, MongoDB, Redis
Clients Usually Reach Out When
• They need an RWA or tokenization platform built correctly from the start
• A blockchain product needs experienced technical leadership
• Smart contracts require implementation or integration
• Existing systems need blockchain functionality
• Development has slowed down and technical direction is unclear
• An MVP needs to become a production-ready product
• They need someone who can take ownership rather than simply complete tasks
If you're building something in blockchain, tokenization, Web3, or adjacent technologies and need someone who can contribute beyond implementation, I'd be happy to discuss it.
Malkeet S.
has worked
.
Associated with
Immanent Solutions
$30K+
earned
$30/hr
100%
Job Success
$70K+ earned
Available now
Start of list.
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I am a passionate and results driven AI Expert, Blockchain Developer, and Full Stack Engineer based in Bangalore, India, with extensive experience designing, developing, and deploying scalable web applications, AI powered solutions, and decentralized platforms.
My expertise is in Artificial Intelligence, Machine Learning, Generative AI, Blockchain Development, and modern Full Stack technologies. I focus on building innovative products that leverage intelligent automation to create next generation applications.
Artificial Intelligence & Machine Learning Expertise
- AI & Generative AI
- Large Language Models (LLMs)
- OpenAI, Claude Integration
- AI Agents & Autonomous Workflows
- AI Chatbots & Virtual Assistants
- Prompt Engineering
- AI Powered SaaS Applications
- Conversational AI
- Knowledge Base Systems
- AI Automation Solutions
- AI Model Deployment
Blockchain Development Expertise
I specialize in designing and developing secure, scalable, and production ready blockchain applications.
- Blockchain Technologies
- Ethereum
- Solidity
- Solana
- Rust
- Web3.js
- Ethers.js
- Smart Contract Development
- Layer-2 Solutions
Blockchain Solutions
- Token Creation (ERC-20, ERC-721, ERC-1155)
- NFT Minting Platforms
- NFT Marketplaces
- NFT Staking Platforms
- DeFi Applications
- Staking & Yield Farming Protocols
- ICO / IDO Launchpads
- Decentralized Exchanges (DEX)
- Payment Protocols
- DAO Development
- Cross-Chain Applications
- Blockchain Wallet Integrations
- Decentralized Donation Platforms
- Token Launchpads
- Prediction Market
I continuously stay updated with emerging trends across AI, Web3, DeFi, and decentralized infrastructure to deliver innovative and future ready solutions.
Full Stack Development Expertise
Front-End Development
- JavaScript (ES6+), TypeScript, React.js, Next.js, Gatsby, Redux, HTML5, CSS3 / SCSS, Tailwind CSS, Material UI, Bootstrap, Responsive UI/UX Design
Back-End Development
- Node.js, Express.js, REST APIs, GraphQL, Socket, Microservices Architecture, Authentication & Authorization Systems
Databases & Cloud
- MongoDB, SQL Databases, Supabase, Firebase, AWS, Cloud Deployment & Infrastructure, CI/CD Pipelines
Project Expertise
✔ AI-Powered Applications
✔ AI Chatbots & Virtual Assistants
✔ SaaS Platforms
✔ Blockchain & Web3 Applications
✔ DeFi Platforms
✔ NFT Marketplaces
✔ Crypto Exchanges
✔ E-commerce Platforms
✔ Custom CMS & CRM Solutions
✔ Enterprise Applications
✔ API Development & Integrations
✔ Real-Time Applications
✔ High-Traffic Systems
✔ Custom Business Platforms
I believe successful projects are built on strong communication, transparency, and long-term collaboration. Whether you're building an AI product, blockchain platform, SaaS application, or enterprise solution, I focus on understanding your business goals and delivering scalable, high-quality results.
I am available for both short-term and long-term engagements and am happy to discuss your requirements via audio/video calls, meetings, or collaborative planning sessions.
Paresh N.
has worked
.
$35/hr
100%
Job Success
$10K+ earned
Available now
Offers consultations
Start of list.
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I help startups, founders, and Web3 teams build, deploy, and scale production-ready blockchain systems — from smart contracts and dApp architecture to token launches, liquidity systems, and full Web3 infrastructure.
I don’t just write code. I build and modify real, live blockchain systems that are meant to go to mainnet, scale, and generate usage.
If you need someone who only delivers “MVP demos,” I’m probably not your guy.
But if you need someone who can take your project from idea to testnet, then mainnet deployment, and into a working, user-ready product — then we should talk.
What I Do (End-to-End Web3 Execution):
• Smart Contract Development & Mainnet Deployment
• Production-Ready DApps & Backend Infrastructure
• Token Launches (ICO / IDO / Presale)
• Wallet Integration & Payment Infrastructure
• Liquidity, Volume & Growth Strategy
• Cross-Chain & Dual-Chain Systems
• Security-Focused Web3 Infrastructure
Blockchain & Web3 Development:
As a Full-Stack Blockchain Developer, I build scalable, audit-ready, and production-grade systems across Ethereum, Solana, BSC, Polygon, Arbitrum, and EVM ecosystems.
Smart Contracts (Solidity / Rust):
• ERC-20 / ERC-721 / ERC-1155 / SPL Tokens
• Token deployment on Ethereum & Solana
• Staking, vesting, minting & governance systems
• Smart contract testing, debugging & audit-ready delivery
• Gas optimization & security-first engineering
• Etherscan verification & production deployment
DApp Development (Full-Stack Web3):
• React.js / Next.js frontend + Node.js backend
• Web3.js / Ethers.js integration
• Wallet integrations (MetaMask, WalletConnect, Phantom)
• APIs, dashboards & admin panels
• Backend infrastructure & automation systems
• Production infrastructure deployment & go-live execution
Defi & Web3 Infrastructure:
• Staking, yield farming & liquidity systems
• AMM / DEX systems (Uniswap, PancakeSwap, Raydium)
• ICO / IDO / IEO launchpads
• Cross-chain bridge systems
• Ethereum ↔ Solana dual-chain architecture
• Governance, treasury & reserve systems
• Blockchain APIs (Alchemy, Infura, QuickNode, Moralis)
NFT & Payment System:
• NFT marketplaces & minting systems
• NFT staking & reward systems
• Crypto payment gateways
• Fiat → crypto onboarding systems
• Stablecoin payment flows
• Wallet-based checkout systems
Bots, Automation & Trading Systems:
• Trading bots, sniper bots & automation tools
• MEV & market-making systems
• Telegram bots & alert systems
• On-chain workflow automation
Token Launch, ICO & Growth Strategy:
I don’t stop at deployment — I help projects launch and gain traction.
• ICO / IDO / Presale execution
• Tokenomics implementation
• Liquidity setup & DEX integration
• CoinMarketCap / CoinGecko listing support
• Investor-ready MVP systems
• Go-live launch support
Advanced Blockchain Solution:
• Cross-chain bridges (ETH ↔ BSC ↔ SOL ↔ Polygon)
• DAO governance systems
• Tokenomics design & implementation
• Blockchain APIs (Alchemy, Infura, QuickNode, Moralis)
• Node / RPC / validator setup
• Blockchain explorers & analytics dashboards
Why Client Hire Me:
• Blockchain Developer + Web3 Infrastructure Expertise
• Production-Ready Systems (not just MVPs)
• Security-Focused & Audit-Ready Delivery
• Mainnet Deployment & Go-Live Execution
• Strong Communication & Fast Execution
• Real Results: $10M+ raised, high-growth token launches
Who I Work With:
• Startups launching tokens or Web3 products
• Founders building DeFi / NFT / SaaS platforms
• Teams needing secure, scalable blockchain systems
• Projects that want users, liquidity, and growth — not just code
💬 If you’re launching a token, building a dApp, scaling a blockchain platform, or need a developer who understands both tech + growth:
👉 Send me a message. Let’s build a live, scalable, revenue-generating Web3 system.
Blockchain Developer | Web3 Developer | Solidity | Rust | Smart Contracts | DApp Development | Ethereum | Solana | ERC-20 | SPL Tokens | DeFi | NFT Development | Token Launch | ICO | IDO | Presale | Web3 Infrastructure | Ethers.js | Web3.js | Node.js | React.js | Next.js | Mainnet Deployment
Olusola A.
has worked
.
$25/hr
100%
Job Success
$60K+ earned
Available now
Offers consultations
Start of list.
End of list.
I work with startups and businesses to build blockchain products, AI-powered systems, and scalable web applications that are designed for real users ........... not just technical demos.
Over the last 8+ years, I’ve helped clients develop everything from DeFi platforms and crypto wallets to automation systems, AI integrations, and full-scale SaaS products. My focus is always on building products that are secure, practical, and ready to grow.
I enjoy working closely with founders and teams who care about creating solid long-term products, whether that means launching a new Web3 platform, improving an existing application, or integrating AI into business workflows.
Areas I Commonly Work On
Blockchain & Smart Contract Development
Web3 Applications
AI Agents & Workflow Automation
DeFi & Crypto Platforms
NFT & Tokenization Projects
Full-Stack SaaS Development
API & Backend Architecture
Product Scaling & Optimization
Tech Stack
Blockchain:
Solidity, Ethereum, Solana, Rust, Hyperledger, Web3.js, Ethers.js
Frontend:
React.js, Next.js, TypeScript, TailwindCSS
Backend:
Node.js, NestJS, Python, Go, REST APIs
What You Can Expect Working With Me
Clear communication
Reliable delivery timelines
Clean, maintainable code
Attention to performance and scalability
A practical approach focused on business goals
I prefer building long-term working relationships and contributing to projects where thoughtful engineering and product quality actually matter.
If you have an idea you’re exploring or a product you want to improve, feel free to reach out.
$25/hr
100%
Job Success
$2K+ earned
Start of list.
End of list.
👋 𝗔𝗕𝗢𝗨𝗧 𝗠𝗘
I am a Senior Full Stack Blockchain Developer and Web3 Engineer with 5+ years of hands on experience delivering secure, scalable, production grade blockchain solutions.
I help startups and businesses turn Web3 ideas into real, working products.
Not just smart contracts. I build complete blockchain systems that are
✔ Secure against exploits
✔ Optimized for gas and performance
✔ Built for real users and long term scalability
From architecture to development to deployment, I handle the full lifecycle and make sure everything works smoothly in production.
🧠 𝗖𝗢𝗥𝗘 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘
🔗 Smart Contracts and Blockchain
✔ Solidity development for ERC20, ERC721, ERC1155
✔ Upgradeable contracts using UUPS and proxy patterns
✔ DeFi logic including staking, farming, liquidity and rewards
✔ Tokenomics design and protocol architecture
✔ Chains: Ethereum, Polygon, BSC, Arbitrum, Optimism, Avalanche
✔ Solana using Rust and Anchor
⚙️ Web3 and dApp Development
✔ Ethers.js, Web3.js, Wagmi
✔ Wallet integrations including MetaMask and WalletConnect
✔ Event indexing with The Graph
✔ On chain and off chain system design
💻 Full Stack Development
✔ Frontend: React, Next.js, TypeScript
✔ Backend: Node.js, NestJS, APIs, WebSockets
✔ Databases: PostgreSQL, MongoDB
🌉 Advanced Systems
✔ Cross chain integrations
✔ Layer 2 scaling solutions
✔ RWA tokenization platforms
✔ Oracle integrations with Chainlink
🛡 Security and DevOps
✔ Foundry, Hardhat, Truffle
✔ Smart contract testing and security review
✔ Tools like Slither and MythX
✔ Docker, AWS, CI CD pipelines
🏗 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗
✔ DeFi platforms including staking, yield farming and liquidity systems
✔ NFT marketplaces and minting platforms
✔ Token launchpads including ICO and presale systems
✔ Full stack dApps from smart contracts to frontend
✔ DAO and governance systems
✔ Smart contract audits, fixes and optimization
🎯 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗖𝗛𝗢𝗢𝗦𝗘 𝗠𝗘
✔ I think in systems, not just features
✔ I build for scale and long term use
✔ I write clean, maintainable and secure code
✔ I communicate clearly and respect timelines
🤝 𝗟𝗘𝗧’𝗦 𝗕𝗨𝗜𝗟𝗗
If you are building a Web3 product or improving an existing one, feel free to reach out.
I can help you design, build, and launch it with a solid technical foundation.
#Blockchain #SmartContracts #Solidity #Web3 #DeFi #NFT #Ethereum #Polygon #BSC #Solana #DApp #Tokenization #Layer2 #Arbitrum #Optimism #Foundry #Hardhat #EthersJS #ReactJS #NodeJS #NextJS #GraphQL #PostgreSQL #AWS #Docker
Mohammad R.
has worked
.
$34/hr
100%
Job Success
$30K+ earned
Available now
Offers consultations
Start of list.
End of list.
𝐌𝐨𝐬𝐭 𝐭𝐞𝐚𝐦𝐬 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐚𝐭 𝐭𝐡𝐞 𝐛𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐚𝐧𝐝 𝐀𝐈 𝐢𝐧𝐭𝐞𝐫𝐬𝐞𝐜𝐭𝐢𝐨𝐧 𝐠𝐞𝐭 𝐭𝐡𝐞 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 𝐰𝐫𝐨𝐧𝐠 𝐨𝐧 𝐝𝐚𝐲 𝐨𝐧𝐞. 𝐈’𝐦 𝐭𝐡𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐭𝐡𝐞𝐲 𝐛𝐫𝐢𝐧𝐠 𝐢𝐧 𝐭𝐨 𝐠𝐞𝐭 𝐢𝐭 𝐫𝐢𝐠𝐡𝐭 𝐭𝐡𝐞 𝐟𝐢𝐫𝐬𝐭 𝐭𝐢𝐦𝐞.
4+ years shipping Solana and EVM systems to mainnet and leading the AI agents and LLM-powered systems that run alongside them. Top Rated on Upwork with 100% Job Success across 25+ contracts.
Worked on a government-funded blockchain and AI agriculture platform, alongside building tokens with real market caps, AI-driven Telegram bots, and OCR + LLM pipelines that ship to production. Whether you need a smart contract, an AI agent, or a system that combines both, I deliver mainnet-ready code not prototypes.
𝗣𝗿𝗼𝘃𝗲𝗻 𝗥𝗲𝘀𝘂𝗹𝘁𝘀
✅ Worked on a government-funded blockchain & AI-based agriculture traceability platform using Solana Architecture
✅ Built Web3 Rewards Website → token burn redemption platform deployed on a major Web3 audit platform (SIWE + wallet connect + promo distribution)
✅ Shipped Forge3 → Web3 escrow protocol that hit $200K market cap
✅ Built ClusterFck → Solana token analyzer ($158K market cap) with bundle detection and rug-pull risk scoring
✅ Delivered La Suite du Monde → DAO/NFT membership system for a campaign thats targetting €1M+
✅ Built an AI-driven bot for cross-border blockchain remittances with multi-language LLM support
✅ Delivered an AI-powered OCR + audio digitization pipeline for a production book library system
𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
◆ Solana / Anchor / Rust → modular program architecture, SPL tokens, PDAs, CPIs, Jupiter integrations, on-chain data systems
◆ Solidity → 20+ mainnet contract deployments. ERC-20, ERC-721, ERC-1155, staking, vesting, presale, custom DeFi logic. Hardhat, Foundry, OpenZeppelin.
◆ Full-Stack Web3 → Next.js + TypeScript + wagmi/viem + ConnectKit on the frontend. Node.js, Postgres, and Solana/EVM bridges on the backend. SIWE auth, wallet connect flows, production deployment pipelines.
𝗔𝗜 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻
◆ LLM Integration → OpenAI, Anthropic Claude, and Gemini APIs in production systems
◆ AI Agents & RAG → LangChain, multi-agent orchestration, vector databases, semantic search over domain documents
◆ Workflow Automation → n8n, Make, Telegram bots, AI-assisted alert and trading systems with retry/error handling
◆ AI + Web3 → on-chain AI integrations, intelligent token analyzers, AI-driven dApp features
𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲
✔ Top Rated with 100% Job Success across 25+ contracts
✔ Mainnet-shipped, production-tested code — not demos
✔ I run a small dev team — can scale up on bigger contracts without losing quality
✔ Honest architectural feedback before you spend an hour coding
✔ Senior-level decisions on architecture, security, and tokenomics from day one
𝗪𝗵𝗮𝘁 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗦𝗮𝘆
⭐⭐⭐⭐⭐ “With over 25 years of professional experience, it’s genuinely rare to come across talent this professional, committed, and reliable. He is without question one of the best developers I’ve worked with.”
~ Erick F.
If you’re building a smart contract, an AI agent, or a system that combines both send me an invite.
Keywords : Blockchain Developer | Solana Developer | Solidity Developer | Smart Contract Developer | Smart Contract Audit | Anchor Framework | Rust Developer | Web3 Developer | dApp Development | DeFi Developer | NFT Marketplace | NFT Development | ERC-20 | ERC-721 | ERC-1155 | Token Development | Staking Contract | Vesting | Presale | DAO | DEX | AMM | SPL Token | Jupiter | PDA | CPI | Hardhat | Foundry | OpenZeppelin | Slither | Mythril | ethers.js | wagmi | viem | web3.js | ConnectKit | RainbowKit | SIWE | MetaMask | Phantom | WalletConnect | Next.js | React | TypeScript | Node.js | Postgres | MongoDB | Laravel | Python | Ethereum | BSC | Polygon | Arbitrum | Base | Optimism | Cross-Chain Bridge | Layer 2 | AI Engineer | AI Agent Development | LLM Integration | OpenAI API | Anthropic Claude | Gemini API | LangChain | LangGraph | RAG Pipeline | Vector Database | Semantic Search | Pinecone | Multi-Agent Systems | Agentic AI | Prompt Engineering | n8n | Make | Zapier | Workflow Automation | Telegram Bot | Discord Bot | Chatbot Development | OCR | Document Digitization | AI + Web3 | Tokenomics | Crypto Trading Bot | MEV | Mainnet Deployment | Top Rated Freelancer
$12/hr
100%
Job Success
$3K+ earned
Start of list.
End of list.
🔧 Software Developer | System Administrator | Linux Server Expert | PHP & Python Specialist
Welcome! I’m a dedicated and versatile Software Developer and System Administrator with extensive hands-on experience designing, developing, and deploying complex web applications and managing robust Linux-based server infrastructures.
With a solid background in full-stack development, server architecture, and DevOps practices, I bring a unique blend of software engineering and system-level expertise—allowing me to build scalable applications while also ensuring optimal performance, uptime, and security on the backend.
⸻
💻 Web & Software Development Expertise
I specialize in developing dynamic and secure web applications using modern technologies and frameworks, with a focus on clean code, performance, and scalability.
Languages & Frameworks:
• PHP (Laravel, CodeIgniter, custom frameworks)
• Python (Flask, Django, scripting, automation)
• JavaScript, HTML5, CSS3, Bootstrap
Database Management:
• MySQL / MariaDB
• PostgreSQL
• SQLite
• phpMyAdmin setup & optimization
Web App Capabilities:
• RESTful API development
• Backend business logic and integrations
• User authentication systems
• Admin dashboards and reporting tools
• Third-party API integration (payment gateways, social logins, etc.)
I can work on both small-scale scripts and enterprise-level applications—designing systems from the ground up or jumping into existing projects with ease.
⸻
🛠️ System Administration & DevOps
As a certified Linux administrator, I have deep experience managing Linux-based environments, ensuring secure, stable, and scalable server operations.
Operating Systems:
• Ubuntu
• CentOS
• Red Hat Enterprise Linux (RHEL)
• Debian
Core System Admin Services:
• Server provisioning and configuration
• Apache, NGINX, and PHP-FPM setup
• Firewall and network configuration
• Shell scripting and automation
• Backup strategies and disaster recovery
Security & Optimization:
• Hardening Linux servers
• SSL/TLS certificate installation (Let’s Encrypt, custom)
• Fail2Ban and intrusion detection setup
• Load balancing and high availability configurations
• Performance tuning for web and database servers
Application Hosting & DevOps:
• Web app deployment (PHP, Python, Node.js)
• Database installation and tuning (MariaDB, MySQL)
• FTP/SFTP and SSH server setup
• Monitoring tools (Nagios, Zabbix, Netdata)
• Version control with Git and GitHub/GitLab
• CI/CD Pipelines setup
⸻
🔗 Integrated Services
I offer end-to-end solutions—from writing application code to deploying and securing it in a production environment.
• Install and configure WordPress, Magento, and other CMSs
• Setup and migrate servers or websites (Namecheap, GoDaddy, DigitalOcean, AWS, etc.)
• Domain and DNS management
• Email server configuration (Postfix, Dovecot)
• SSL setup and renewal automation
• Troubleshooting issues and performance bottlenecks
⸻
🧠 Why Work With Me?
• ✅ Versatility – I can handle both development and infrastructure.
• ✅ Problem Solver – I don’t just patch issues—I fix root causes.
• ✅ Client-Centric – Clear communication, on-time delivery, and post-project support.
• ✅ Security-First Mindset – Security and uptime are always a priority.
• ✅ Reliable & Responsible – You can trust me to own the task from start to finish.
Whether you’re looking to build a robust web application, automate backend processes, or manage your server environment with confidence—I can help bring your vision to life.
⸻
📬 Let’s Talk
I’m available for:
• Long-term collaborations
• One-time troubleshooting tasks
• System audits and security reviews
• Full-stack web app development
• DevOps and server architecture consulting
Send me a message and let’s discuss how I can help with your next project.
$35/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
Start of list.
End of list.
𝗛𝗲𝘆 👋 𝗜’𝗺 𝗗𝗶𝗺𝗮, 𝗮 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝗮𝗻𝗱 𝗦𝗮𝗮𝗦 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝗺𝗼𝗿𝗲 𝘁𝗵𝗮𝗻 𝟭𝟬 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗶𝗻 𝘄𝗲𝗯 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽𝘀, 𝗮𝗻𝗱 𝗯𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀. 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗳𝗮𝘀𝘁, 𝘀𝗲𝗰𝘂𝗿𝗲, 𝗮𝗻𝗱 𝘂𝘀𝗲𝗿-𝗳𝗿𝗶𝗲𝗻𝗱𝗹𝘆 𝗦𝗮𝗮𝗦 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀, 𝗰𝗿𝘆𝗽𝘁𝗼 𝗲𝘅𝗰𝗵𝗮𝗻𝗴𝗲𝘀, 𝐜𝐫𝐲𝐩𝐭𝐨 𝐰𝐚𝐥𝐥𝐞𝐭𝐬 𝗮𝗻𝗱 𝗺𝗮𝗿𝗸𝗲𝘁𝗽𝗹𝗮𝗰𝗲𝘀 𝘁𝗵𝗮𝘁 𝗵𝗲𝗹𝗽 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 𝘀𝗰𝗮𝗹𝗲 𝗮𝗻𝗱 𝘀𝘂𝗰𝗰𝗲𝗲𝗱.
If you need a reliable React developer, Node.js backend developer, or mobile app developer who can take your idea from concept to launch, you’re in the right place.
🔸 100% Job Success 🔸 5.0 Review Rating 🔸 TOP 1% on Upwork 🔸 $600k+ Earned by Agency
🎯 Highlights of My Experience
1) Over 10 years of hands-on experience as a Full-Stack Developer and SaaS developer.
2) Delivered more than 200 projects, including 27 crypto exchange platforms, 35 multi-vendor marketplaces, 14 crypto wallets, and 43 SaaS apps.
3) Strong expertise in React, Node.js, JavaScript, and blockchain development for scalable applications.
4) Deep understanding of cryptocurrency, currency exchange systems, crypto wallets and marketplace ecosystems similar to Amazon.
5) Focused on clean architecture, performance, and clear communication.
⚙️What I Do
I design and develop SaaS platforms, marketplaces, crypto wallets and crypto exchanges that are modern, secure, and easy to manage. As a full-stack developer, I work with React on the frontend and Node.js or Laravel on the backend, connecting everything through strong APIs.
Here’s how I can help you:
1) SaaS development: building analytics dashboards, subscription systems, and cloud-based tools for your business.
2) Crypto exchange development: creating cryptocurrency and currency exchange apps with wallets, real-time trading, and admin dashboards.
3) Marketplace development: developing multi-vendor marketplaces with complex payment flows, order management, and seller portals.
4) Web development: crafting high-performing React and Next.js web apps optimized for speed and SEO.
5) Mobile app development: developing native and cross-platform apps with React Native that integrate seamlessly with your SaaS or crypto backend.
6) Blockchain development: implementing smart contracts, Web3 integrations, and secure wallet features.
7) Crypto wallet development: creating mobile wallet and digital wallet apps similar to Trust Wallet with blockchain integration, security layers, and user-friendly crypto-trader tools.
🧰 Tech Stack
1) Frontend: React, Next.js, Vue.js, Tailwind CSS, JavaScript
2) Backend: Node.js, Nest.js, Express.js, Laravel, PostgreSQL, MongoDB
3) Mobile: React Native, Flutter, Firebase
4) Blockchain: Ethereum, Binance Smart Chain, Solana, Solidity, Web3.js, Ethers.js
5) Cloud & DevOps: AWS, Docker, CI/CD, Google Cloud
Every product I build combines React performance, Node.js reliability, and blockchain security to support scalable crypto exchanges, wallets, and SaaS platforms.
🌟 Why Work With Me
1) 100% Job Success and 5.0★ client rating.
2) Over $100k earned through completed SaaS, marketplace, and crypto projects ( crypto exchanges and crypto wallets ).
3) Transparent communication and full project ownership.
4) I handle both frontend and backend development, including React, Node.js, and API integration.
5) Experienced blockchain developer for crypto exchange UI, mobile wallet, and digital wallet apps.
6) Proven record of building secure blockchain infrastructures trusted by crypto traders and businesses worldwide.
💡 Specializations
1) SaaS developer (dashboards, analytics, automation)
2) Full Stack Developer (React / Node.js / JavaScript)
3) Blockchain developer (smart contracts, wallets, DeFi)
4) Marketplace developer (multi-vendor systems, Amazon-style models)
5) Crypto exchange developer (secure currency exchange platforms)
6) Web developer and React developer (modern UI/UX and API-driven apps)
7) Mobile app developer (React Native, Flutter)
8) Backend developer (Node.js, Nest.js, Laravel)
9) Crypto wallet developer (mobile wallet, digital wallet, Trust Wallet-style apps)
If you’re looking for a Full-Stack Developer who can build your next SaaS, crypto exchange, or crypto wallet app with React, Node.js, and blockchain, let’s connect. I respond quickly and can help you turn your idea into a working product that users will love with my BDM skills.
💬 Message me today, and let’s start building something amazing.
Dima L.
has worked
.
Associated with
Peiko Inc.
$700K+
earned
$32/hr
100%
Job Success
$60K+ earned
Available now
Offers consultations
Start of list.
End of list.
With 10+ years of experience across AI development, cybersecurity, and blockchain, I bring a combination most freelancers can't offer I think like an engineer and a hacker at the same time.
✦ CYBERSECURITY
Certified OSCP | CRTO | eWPTXv2 I've led hundreds of penetration tests and security assessments for startups, enterprises, and regulated financial institutions.
- Web Application & API Penetration Testing (OWASP Top 10, business logic flaws)
- Network Penetration Testing Internal & External
- Active Directory Security Assessments
- Red Team & Assume Breach Engagements
- Cloud Security Assessments
- MITRE ATT&CK–based adversary emulation
- Executive-ready reports, proof-of-concept evidence & free retests included
All testing is manual-first no scanner noise, only real exploitable findings.
✦ AI DEVELOPMENT
I've shipped full-scale AI products handling real users and real workflows. Here's what I build:
- AI video generation platforms custom avatar creation, script-to-video, multilingual dubbing, and export-ready outputs
- AI voice cloning & text-to-speech systems for content creators and media companies
- AI avatar & digital human platforms for marketing, training, and e-learning use cases
- Enterprise AI automation platforms natural language command execution, multi-task AI agents, and cross-department workflow automation
- AI chatbots & virtual assistants integrated with WhatsApp, Telegram, Slack, and web apps
- Custom LLM-powered tools document Q&A, internal knowledge bases, and AI copilots for SaaS products
- RAG (Retrieval-Augmented Generation) pipelines for accurate, context-aware AI responses
- AI content generation tools for social media, marketing copy, and video scripts
- End-to-end AI SaaS products with subscription billing, user dashboards, and API integrations
✦ BLOCKCHAIN & WEB3
- Smart contract development & security audits
- DeFi protocol builds and integrations
- Web3 application development with security-first architecture
- NFT platform development and token contract reviews
✦ WHY THIS COMBINATION MATTERS
When I build your AI product, I'm already thinking about how it gets attacked. When I audit your systems, I understand the modern tech stacks powering them. That dual perspective is rare and it raises the quality bar of everything I deliver.
If you want an AI builder who thinks like an attacker, or a security professional who ships real products — let's talk.