Akinsunmi Tunde
Full-Stack Engineer: Blockchain & Mobile Dev
Built a cross-platform mobile app with React Native and TypeScript for a fintech client - wallet balances, transaction history, and push notifications. Integrated REST APIs, biometric login, and published to test distribution for beta users.
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Designed and audited Solidity smart contracts for a Bitcoin-native lending protocol on Stacks. Wrote secure, gas-efficient functions in Solidity and Clarity (SIP-033), ran security checks for reentrancy and overflow risks, and built the React/TypeScript dApp frontend so users interact with the protocol safely. Experience spans DeFi, ERC standards, and smart contract auditing.
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Built a custom AI knowledge base chatbot trained on a company's internal documents and FAQs. Used RAG (retrieval-augmented generation) so answers stay accurate and never made up. Reduced repetitive support tickets by ~70% and gave the team a self-service help system that works 24/7 in plain language.
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Built a WhatsApp AI Reply Agent for small businesses that answers customer messages instantly, 24/7, and captures leads automatically. Set up the flow with no-code automation (Make.com + WhatsApp Business API) so a shop owner never misses a customer inquiry outside business hours again. The agent runs a custom knowledge base, handles FAQs, books follow-ups, and forwards hot leads to the owner in real time.:
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