Wiseman U.
Junior Full Stack Web3 Engineer
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About
Wiseman U. is a proficient Full Stack Engineer and Smart Contract Developer with three years of experience in creating decentralized and web applications across various industries, including DeFi, NFT marketplaces, e-commerce, and SaaS. He specializes in writing and deploying production smart contracts on platforms like Solana, Flow, Xion, and Lisk, and excels in designing scalable backend APIs while managing frontend delivery from Figma to production. His career includes significant contributions in Web3 startups and mid-size teams, where he seamlessly transitions between full-stack engineering roles and specific technical responsibilities. Notably, he has engineered on-chain solutions such as Rust contracts for SolChess and developed comprehensive booking systems for Femstyles, demonstrating his adeptness in backend, frontend, and API system design. His technical skills encompass Node.js, Python, React.js, and payments integration with Stripe and Paystack, showcasing a robust understanding of both technical and business requirements in software development.
Experience
Smart Contract · Backend · Frontend
SolChess · 2026 — 2026Developed on-chain Rust contracts for a two-player chess game, incorporating staking, prize pools, and trustless dispute resolution. Created game API logic for global spectators and ensured uninterrupted gameplay through WebSocket connections. Integrated the complete frontend with the Solana SDK for on-chain wallet interactions and real-time game states.Backend · Frontend
Femstyles · 2025 — 2026Engineered a holistic booking API system managing appointments, scheduling, Stripe payment integration, and QR code verification for resolving disputes. Developed an admin dashboard for overseeing services, bookings, and customer configurations. Delivered a comprehensive user journey from the landing page and service listings to the payment interface and confirmation.Smart Contract · Backend · Frontend
OTC Marketplace · 2025 — 2025Created Solana smart contracts for secure peer-to-peer token sales and token listing, ensuring on-chain transaction integrity. Designed authentication API and backend services essential for marketplace functionality and private chats. Constructed the complete trading user interface, facilitating token listings, private purchases, and real-time chat for negotiations.Smart Contract · Backend · Frontend
WalP · 2025 — 2025Authored Cadence smart contracts for a payment-link platform that manages on-chain fee routing to the WalPay treasury. Built the backend API necessary for earnings reconciliation while syncing Cadence contract state with the database. Delivered the seller dashboard and integrated branded buyer checkout frontend utilizing the Flow SDK.Backend · Frontend
Nano's Gadget · 2025 — PresentDesigned the system architecture for an e-commerce platform focused on gadgets, including Paystack payment integration. Developed API logic for cart management, user authentication, storefront features, and role-based admin operations. Oversaw the comprehensive frontend delivery encompassing the storefront, cart, order tracking, and admin dashboard.Smart Contract · Backend · Frontend
Voxcard · 2025 — 2025Wrote and deployed smart contracts on the Xion blockchain for a communal savings and spending protocol, implementing group authorization mechanisms. Built the backend API layer in alignment with frontend specifications and integrated with on-chain contract states. Designed and delivered the user interface for real-time interactions with savings pools on Xion.Smart Contract · Backend · Frontend
Lisk Name Server · 2025 — 2025Integrated the Lisk blockchain as the primary source of truth and designed a comprehensive REST API architecture over it. Developed an external SDK along with an API key authentication system to facilitate third-party integrations. Created interactive and animated frontend pages, linking them to the Lisk SDK and backend APIs.Smart Contract · Frontend
NeonBid · 2025 — 2025Designed and implemented Solidity smart contracts for managing NFT auction functionalities, including bidding, ownership transfer, and settlement. Built a complete auction marketplace user interface that integrates with the Lisk blockchain SDK for on-chain bidding.
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