Hi, I'mO'Brien Taiwo
I build fullstack products — NestJS and Go backends, React and Next.js frontends, and the occasional AI layer on top.
About Me
I'm a fullstack developer with experience building web applications and blockchain solutions across web2 and web3. I specialize in both frontend and backend development, creating end-to-end solutions with modern technologies.
My journey in tech spans traditional web development and decentralized applications. I've worked with various projects to create intuitive, performant, and accessible digital experiences, from conventional web apps to smart contract integrations.
When I'm not coding, you can find me watching movies, series, and anime, or listening to music. My tech discoveries often happen when debugging— nothing drives you to explore new solutions quite like code that won't work 😂.
My Skills
Featured Projects
Featured Projects
Proposly
Full-stack proposal management platform for freelancers. AI-powered proposal generation and inline editing with Claude, Stripe + Paystack subscriptions, Puppeteer PDF export with auto-generated T&Cs, and shareable client links.
Image Processing Service
Async image processing service using Bull queues and Redis. Handles uploads, resizing, compression, and thumbnail generation with S3-compatible storage (Minio).
Distributed Notification System
Microservices architecture for handling notifications. Built with Node.js, NestJS, Python (FastAPI), and RabbitMQ for message queuing across services.
Other Projects
Aave V3 DeFi Integration
Hardhat project demonstrating interaction with Aave V3 protocol. Includes lending, borrowing, and repayment functionality with mainnet forking for testing.
Habit Tracker API
RESTful API for habit tracking mobile app. Features user authentication, habit CRUD operations, and daily completion tracking with JWT security.
Holiday AI Agent
Intelligent AI assistant providing holiday information for 230+ countries. Built with Mastra framework and integrated with Telex.im via A2A protocol.
Work Experience
Frontend Developer
Contributing to development team building ERP solutions for maritime operations. Creating responsive, mobile-first user interfaces and collaborating on complex data management features for operational efficiency.
Backend Developer
Building scalable backend systems and RESTful APIs. Working with databases, authentication systems, and server-side logic while collaborating with frontend developers to deliver complete full-stack solutions.
Frontend Developer
Contributing to development team building ERP solutions for maritime operations. Creating responsive, mobile-first user interfaces and collaborating on complex data management features for operational efficiency.
Frontend Developer
Developed a comprehensive library administration platform from the ground up. Collaborated with backend developer and UI/UX designer to deliver modern, intuitive dashboard interfaces with responsive data visualization.
Frontend Developer
Developed and maintained frontend web applications ensuring high-quality user experiences. Collaborated directly with CTO and development team to deliver projects on schedule while implementing best practices.
Frontend Developer Intern
Completed weekly frontend development projects with tight deadlines. Collaborated with cross-functional teams including backend developers and designers, gaining hands-on experience with modern web development workflows.
SIWES Intern
Supported ICT staff in daily technical operations and digital administration. Gained practical exposure to web technologies, programming fundamentals, and professional teamwork in an ICT setting.
Recent Writing
eas-preflight: Catching Expo Bundle Size Regressions Before They Ship
I built a free GitHub Action that diffs your Expo app's JS bundle size on every PR. Here's how it works, and three real bugs that only showed up once I stopped testing against my own machine.
Building Proposly: AI Proposals, Dual Payments, and PDF Generation
How I built a full-stack proposal management platform for freelancers — Claude for AI generation and inline editing, Stripe + Paystack for subscriptions, and a Puppeteer-based PDF pipeline with auto-generated terms.
Building an AI News Summarizer in Go with Gemini
How I built BriefMe — a Go API that scrapes any URL, pulls articles from NewsAPI, summarizes them with Gemini 2.5 Flash, and supports follow-up questions with conversational context.