Dima L.
Crypto Exchange | SaaS | Marketplace | Full stack developer | Node.js
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.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $7k
Billed in all: $208,714$209k
$2.3k in the last 6 months
Across 20 contracts
Earnings, last 30 days
Skill rankings: Top 6% in Solidity
Ranked by MRR among everyone on Upwork with the skill.
- #18Crypto Wallet136 freelancers · 🇺🇦 #1Top 13%🇺🇦#1 of 8
- #27Blockchain Architecture305 freelancers · 🇺🇦 #3Top 9%🇺🇦#3 of 15
- #51Solidity849 freelancers · 🇺🇦 #2Top 6%🇺🇦#2 of 39
- #69Blockchain, NFT & Cryptocurrency745 freelancers · 🇺🇦 #5Top 9%🇺🇦#5 of 36
- #123Engineering & Architecture922 freelancers · 🇺🇦 #1Top 13%🇺🇦#1 of 22
- #152Cryptocurrency1,788 freelancers · 🇺🇦 #4Top 9%🇺🇦#4 of 60
- #364App Development2,592 freelancers · 🇺🇦 #45Top 14%🇺🇦#45 of 201
- #456iOS3,908 freelancers · 🇺🇦 #64Top 12%🇺🇦#64 of 321