Umer S.

I build blockchain and AI-powered fintech systems, DeFi platforms, crypto wallets, NFT marketplaces, and LLM-driven tools that run in production. 12+ years full-stack. 5+ years in blockchain and AI. I’ve worked on production-grade systems using Talisman, BCB, and Fireblocks handling real transactions, not prototypes. Recent work: -DeFi platforms with gas-optimized smart contracts and live liquidity systems -Custom crypto wallets with MetaMask, WalletConnect, and Fireblocks integration -AI automation tool writes, publishes, and ranks content on Google and LLM models, fully operated -from mobile -Fintech platforms with 40% user engagement lift and 25% cost reduction -LLM integrations and conversational AI systems for SMB workflows What I deliver:  -NFT marketplaces (minting, bidding, royalties, lazy minting)  -DeFi protocols (staking, swaps, AMMs, liquidity pools)  -Crypto wallets and payment systems (ERC-20, ERC-721, ERC-1155)  -Smart contract audits, security reviews, gas optimisation  -LLM and AI integrations on top of Web3 infrastructure  -Full-stack fintech platforms and MVPs  -Token development across Ethereum, Solana, Polygon I work hands-on. I get into the code when it's needed and make architecture calls when it's not. Clients say I'm easy to work with and that I actually know what I'm doing which in this space, matters more than it should. I also support founders on technical strategy and investor calls. I've been in those rooms before and can speak to architecture, security, and scalability in language investors understand. Stack: Stack: Solidity, Rust, Node.js, Python, TypeScript, React, Ethers.js, Web3.js, AWS, OpenAI Send me a message with what you're building. I'll tell you if I'm the right fit and if I'm not, I'll point you to someone who is. 𝐅𝐀𝐐𝐬 𝐐: Are you an agency? 𝐀: No. I don't have my own developers, nor am I affiliated with any development agency. This allows me to hire the 𝐛𝐞𝐬𝐭 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫𝐬 or 𝐚𝐠𝐞𝐧𝐜𝐢𝐞𝐬 for my clients. 𝐐: Can you work as a Developer? 𝐀: Yes. If a client wants to build an 𝐌𝐕𝐏 with minimum resources, I love to 𝐜𝐨𝐝𝐞. Q: How many hours will you spend on my project? 𝐀: As many as needed to deliver the 𝐬𝐜𝐨𝐩𝐞 we agreed on. I meet 𝐝𝐚𝐢𝐥𝐲 with most of the teams I work with. 𝐐: I raised capital. Can you join me on investor calls? A: Of course. I have gone through the 𝐟𝐮𝐧𝐝𝐫𝐚𝐢𝐬𝐢𝐧𝐠 𝐫𝐨𝐥𝐥𝐞𝐫𝐜𝐨𝐚𝐬𝐭𝐞𝐫 more than once. 𝐐: What do you think about technology XYZ? 𝐀: It's the 𝐛𝐞𝐬𝐭 𝐭𝐡𝐢𝐧𝐠 𝐞𝐯𝐞𝐫 but only if the problem it solves is the problem you actually have. 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲: Flexible, 𝐟𝐮𝐥𝐥-𝐭𝐢𝐦𝐞, 𝐩𝐚𝐫𝐭-𝐭𝐢𝐦e, or 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐢𝐧𝐠 based on client needs. 𝐂𝐨𝐬t: Monthly billing or 𝐡𝐨𝐮𝐫𝐥𝐲, tailored to your project.