Clarita
A completed React product shaped around a clear, responsive user experience.
- React
- TypeScript
- Next.js
- Tailwind CSS
I build reliable web products that move ideas forward.
I design and engineer polished, responsive applications with React and TypeScript—from focused product interfaces to full-stack platforms.
- React
- TypeScript
- Next.js
- Tailwind CSS
- JavaScript
- Node.js
- Express
- PostgreSQL
Projects I have built
Selected products shaped through responsive interface design, reusable React systems, and practical engineering decisions.
The Judge
An evidence-first Nigerian legal research workspace with verified authorities and persistent matters.
- React
- TypeScript
- Next.js
- PostgreSQL
VantraClip
An AI-assisted platform for turning long videos into captioned, social-ready clips.
- React
- TypeScript
- Node.js
- Express
About me
I am Tosin Joseph Amupitan, a full-stack product engineer based in Abuja. I design and build modern web products with a strong focus on clarity, responsive behaviour, and dependable implementation.
React and TypeScript are central to most of my work. I use them to create reusable interface systems, model product behaviour clearly, and connect polished frontends to reliable services and data.
My completed product work includes Clarita and The Judge. I am currently building VantraClip, which extends that experience into media processing, background jobs, storage, PostgreSQL, FFmpeg, and external API integrations.
How I approach product work
Start with the outcome
I define what the product needs to achieve, then shape the interface and technical decisions around that goal.Engineer for change
Typed data, reusable React components, and clear boundaries keep products easier to extend and maintain.Keep the interface clear
Responsive layouts, understandable controls, keyboard support, and useful feedback are part of the build, not finishing touches.Deliver with transparency
I communicate scope and status clearly, test the important paths, and keep the work grounded in real product requirements.
In regular use
- React
- TypeScript
- Next.js
- JavaScript
- HTML
- CSS
- Tailwind CSS
- Node.js
- Express
- PostgreSQL
- REST APIs
- FFmpeg
- OpenAI API
- TensorFlow.js
- S3 Storage
- Git
- Vite
- ESLint
- Prettier
- Vitest
- Playwright
- Vercel
- Railway
Currently developing VantraClip while remaining open to thoughtful web product and frontend engineering work.
Products and platforms
Completed product work alongside the platform I am actively building now.
VantraClip
Independent product — Web platform
2026
Building an AI-assisted video clipping platform with React, TypeScript, Node.js, PostgreSQL, FFmpeg, and external integrations.
- Built the workflow for uploads, transcription, highlight selection, captions, reframing, and multi-format exports.
- Developed authentication, background jobs, object storage, and a project-led dashboard architecture.
The Judge
Product engineering — Legal research product
2026
Built an authenticated Nigerian legal research workspace with verified authorities, persistent research history, and private matter management.
- Implemented evidence-ranked answers that cite exact source passages and clearly stop when verified coverage is insufficient.
- Persisted users, matters, research sessions, and citation trails with Neon PostgreSQL and typed server routes.
Clarita
Product engineering — Web product
2026
Delivered a responsive React and TypeScript product with reusable interface patterns and clear end-to-end states.
- Translated the product direction into a polished, responsive interface.
- Built reusable typed components to support consistency and maintainability.
Have a product worth building?
Tell me what you are creating, where you need support, and what a successful outcome looks like.
Use the form or reach me through GitHub or LinkedIn.
- AmupitanTJ
- tosin-joseph-amupitan
Abuja, Nigeria / Remote