Usman K.

Need an experienced Full-Stack Engineer to build your MVP, develop new SaaS features, or clean up an inherited codebase? I am a Full-Stack Developer with a 100% Job Success Score and a Top Rated status. I specialize in building fast, production-ready web applications, secure dashboards, and business software using the React, Node.js, and TypeScript ecosystem. My main focus is production web applications and scalable SaaS tools. Alongside that I work on the blockchain side, smart contracts, wallet integrations and on-chain data, so a product that needs both doesn't have to be split between two developers. Core Full-Stack Capabilities: . Frontend: React.js, Next.js and TypeScript interfaces that hold up across screen sizes. . Backend: REST and GraphQL APIs with Node.js, Express and NestJS. . Databases: PostgreSQL and MongoDB, deployed with Docker and AWS. . Integrations: Stripe and PayPal payments, subscriptions, webhooks, and role-based admin panels. Advanced Web3 / Blockchain Engineering Capabilities: . On-chain smart contract programs using Solidity (EVM) and Rust/Anchor (Solana). . Wallet connections (Metamask, Phantom) and automated on-chain event tracking. . Launchpad work: I built the launchpad for GUESS.MEME — token discovery, a trading screen with buy/sell controls, holder and trade data, chat, admin panel and wallet connection. . Token contracts, tokenization infrastructure, asset distribution and multi-chain dashboards. How I Work With Engineering Teams: I work with teams and independently, write code another developer can pick up. I'm comfortable joining an active sprint, taking over an unfinished codebase from a previous developer, or starting a feature roadmap from scratch. Send me your requirements document or a link to the repo. I'll come back with the scope, the milestones, and where I see the risk.