Software Engineer
I build scalable web apps, mobile experiences, and blockchain-integrated systems that solve real problems.
I'm a full-stack software engineer who works across the entire stack: frontend, backend, blockchain, and mobile. I've built production apps serving thousands of users, shipped AI agents that automate complex workflows, and integrated Web3 features into real-world products.
I focus on clean code, performance, and user experience, building things that work reliably and scale when they need to.
- Frontend & Mobile: React.js, React Router Framework, Next.js, React Native, TypeScript, JavaScript, Tailwind CSS
- Backend: Node.js (Express, Elysia), MongoDB, Redis, RESTful APIs, WebSockets
- Infrastructure: Docker, Vercel, AWS, GitHub Actions
- Blockchain & Web3: Solidity, FunC, Ethers.js, Wagmi, Foundry, Hardhat, Smart contract integration, dApps
- AI & Agents: OpenAI API, Gemini API, Autonomous agents, Multi-agent systems, Web scraping, Automation pipelines
- Header.io – Banner creation tool with drag-and-drop, templates, and sticker kit
- Blockgram – Blockchain-powered Telegram client with in-chat crypto and AI features
- Numpay – Landing page for global money transfers using phone numbers
- Steezchat – Private, encrypted chat for secure communication
- Rapto.dev – Personal portfolio and project lab
- Portfolio: hayrapto.vercel.app
- X (Twitter): x.com/heyrapto
- Email: kalejaiyecaleb@gmail.com
- LinkedIn: linkdln.com/calebkalejaiye
I help teams ship products that scale, stay secure, and deliver real value.