𝐒𝐞𝐧𝐢𝐨𝐫 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 | 𝐂𝐫𝐲𝐩𝐭𝐨 𝐀𝐝𝐯𝐢𝐬𝐨𝐫 | 𝐀𝐬𝐬𝐢𝐬𝐭 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐭𝐲 | 𝐕𝐨𝐥𝐮𝐦𝐞 𝐁𝐨𝐭 | 𝐓𝐞𝐥𝐞𝐠𝐫𝐚𝐦 𝐁𝐨𝐭
I'm 𝐉𝐨𝐫𝐝𝐚𝐧 𝐑𝐨𝐭𝐡𝐬𝐭𝐞𝐢𝐧. I am a senior 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫. not a middleman, not a reseller, not an agency. I'm a US-based engineer who builds infrastructure — cleanly, professionally, and without unnecessary noise.
Clients come to me when they need technical depth, full ownership, and a partner who understands both execution and long-term architecture. I work quietly, move fast, and think clearly.
Over the last few years, I’ve engineered over 50 blockchain systems — from Solana launchpads and Ethereum bundling platforms to custom liquidity bots, presale protocols, and real-time trading automation.
When I work on something, I don’t decorate it — I make it dependable.
🔹 𝐖𝐡𝐚𝐭 𝐈 𝐕𝐚𝐥𝐮𝐞 𝐢𝐧 𝐄𝐯𝐞𝐫𝐲 𝐏𝐫𝐨𝐣𝐞𝐜𝐭
🔸 𝐏𝐫𝐞𝐝𝐢𝐜𝐭𝐚𝐛𝐢𝐥𝐢𝐭𝐲
Good engineering isn’t dramatic. You should always know where things stand — what's built, what's next, and why.
🔸 𝐑𝐞𝐬𝐩𝐞𝐜𝐭
This is a collaboration. I treat your product with the same care I’d give my own. I don’t disappear, I don’t make excuses, and I don’t deliver anything half-ready.
🔸 𝐃𝐞𝐩𝐭𝐡
I’ve seen what breaks in production. I’ve seen what scales and what rots. I bring that clarity into every decision — from code structure to endpoint design.
🔸 𝐐𝐮𝐢𝐞𝐭 𝐂𝐨𝐧𝐟𝐢𝐝𝐞𝐧𝐜𝐞
I don’t try to look impressive. I focus on making your system stronger — technically, operationally, and practically.
🔹 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 & 𝐒𝐦𝐚𝐫𝐭 𝐂𝐨𝐧𝐭𝐫𝐚𝐜𝐭 𝐒𝐲𝐬𝐭𝐞𝐦𝐬
★ 𝐄𝐭𝐡𝐞𝐫𝐞𝐮𝐦
💨 Smart Contracts: ERC-20, ERC-721, ERC-1155, Solidity, Hardhat, Ethers.js, Web3.js
💨 Flashbots MEV Bundling → eth.bundler.gritsmart.io
💨 Token Launchpads, NFT drops, Staking logic, Presale contracts
💨 Frontend + Backend for Ethereum DeFi & dApps
★ 𝐒𝐨𝐥𝐚𝐧𝐚
💨 Rust + Anchor Framework
💨 Jito Bundling → sol.bundler.gritsmart.io
💨 SPL Token infrastructure
💨 Pump.fun bots, liquidity automation, transaction routing
💨 Memecoin deployment with real-time trading and farming contracts
★ 𝐎𝐭𝐡𝐞𝐫 𝐂𝐡𝐚𝐢𝐧𝐬 & 𝐓𝐨𝐨𝐥𝐬
💨 Tron, XRPL, Sui
💨 Telegram Bots: snipe tools, volume alerts, trade triggers
💨 Wallet Support: Metamask, Phantom, WalletConnect
🔹 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧
★ 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝
▪ React.js, Next.js (with SSR)
▪ TypeScript, TailwindCSS
▪ UI/UX with Framer Motion and animated state logic
★ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝
▪ Node.js, Express
▪ GraphQL + RESTful APIs
▪ Real-time Webhooks, Transaction Indexers, Data Sync Engines
★ 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 & 𝐈𝐧𝐝𝐞𝐱𝐢𝐧𝐠
▪ PostgreSQL, MongoDB, Redis
▪ Elasticsearch + Lucene
▪ Docker, Nginx, GitHub Actions, PM2
▪ Linux VPS Deployment (PowerVPS stack)
★ 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 + 𝐀𝐮𝐭𝐡
▪ JWT, OAuth2, Firebase Auth
▪ Wallet-based token gating
▪ Admin layers with IP, session & rate limit control
🔹 𝐃𝐞𝐞𝐩 𝐒𝐞𝐚𝐫𝐜𝐡 & 𝐈𝐧𝐝𝐞𝐱𝐢𝐧𝐠 𝐖𝐨𝐫𝐤
Most developers don’t go this deep — but I’ve built full Lucene-powered search engines into token ecosystems.
💨 Elasticsearch + Lucene for transaction metadata
💨 Integrated into MongoDB and MySQL
💨 Real-time indexing for performance-critical systems
🔹 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 𝐇𝐨𝐬𝐭𝐢𝐧𝐠 & 𝐎𝐩𝐞𝐫𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐒𝐞𝐭𝐮𝐩
𝐋𝐢𝐧𝐮𝐱 𝐬𝐞𝐫𝐯𝐞𝐫 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧
💨 VPS hosting, domain setup, and DNS routing
💨 Telegram bot deployment with uptime monitoring
💨 Reverse proxy with Nginx for secure routing
𝐔𝐧𝐢𝐭𝐞𝐝 𝐒𝐭𝐚𝐭𝐞𝐬
𝐉𝐨𝐫𝐝𝐚𝐧
