Phương Diệp

Product BuilderOne person, full stack of ownership.
I write the PRD, design the screens, build the prototype, and ship to production.

The title just depends on which part of the job you caught me doing. at Sky Mavis · Axie Infinity & Ronin · Ho Chi Minh City

4+ years building product. 1 year as a Product Builder — the title changed when the tools did.

Sky Mavis — Axie Infinity & Ronin

bAXS Token Integration

Led the product integration of bAXS into the Axie Infinity ecosystem — defined token utility, scoped the user-facing flows, and coordinated delivery across game, blockchain, and product teams.

Live ↗ Article ↗
Sky Mavis · Ronin Chain

Axie Delegation System

Identified idle NFT assets as an untapped problem, designed the lending mechanism, resolved trust & transparency UX challenges, and shipped end-to-end — 22% increase in Axie utilization, 30K+ transactions in month one.

Live ↗ Article ↗
Sky Mavis · 2023

Bounty Board

Conceived, designed, and delivered a reward system from scratch — contributed to app.axie reaching 100K DAU.

Live ↗ Article ↗
Sky Mavis · 2024
Personal Projects — Built on My Own Time

bAXS Token Dashboard

Real-time on-chain analytics tracking token supply, holder distribution, burn/swap composition, and game contract balances for the bAXS ecosystem. Built with Next.js and Ronin Chain APIs.

Live ↗
Next.js · Ronin Chain · Dune Analytics

Steam CS2 Highlight Extractor

Desktop tool that auto-turns Steam's background recordings into highlight clips — reads event timeline data, finds kills and multi-kills, exports trimmed MP4s via ffmpeg. Shipped as a standalone .exe.

GitHub ↗ YouTube ↗
Python · ffmpeg · Open Source

Volt EV Calculator

Chrome extension that adds a live Expected Value widget to every pack page on getvolt.gg — so you can see whether a pack is worth buying before you pull.

Chrome Store ↗
Chrome Extension · JavaScript

Axie Rental Marketplace

A marketplace for renting and listing Axie NFTs — built independently to explore the delegation economy and validate demand outside of the official app.

Live ↗
Next.js · Ronin Chain

How I Build

01

Find a real problem

Most ideas aren't worth building. The only question that matters: is this something people actually need, or just something that sounds good? I spend most of my time here — in communities, in data, in conversations.

02

Prototype fast with AI

Once the problem is real, building is the easy part. With Cursor and Claude, I go from idea to working prototype in hours — not weeks. No waiting on handoffs, no bottlenecks. Just a tight loop between thinking and shipping.

03

Iterate until it fits

The first version is never right. I put it in front of real users, watch where it breaks, and keep tightening until it actually solves the niche — not just a vague version of it.

About

I started as a UX/UI designer — obsessed with pixels, flows, and making things feel right. Then I became a Product Designer, which meant caring about why something was being built, not just how it looked. Then Product Owner, which meant owning the roadmap, the tradeoffs, the stakeholders. Now Product Builder — which means I just build the thing myself.

Each title wasn't a pivot. It was the same curiosity pushing further upstream. I kept wanting more ownership over the outcome, so I kept learning whatever it took to get there.

The last shift happened when AI changed what one person could realistically ship. Suddenly the gap between "I have an idea" and "it's live" collapsed. That's the version of this job I find most interesting right now.

Domain

Web3 & blockchain gaming · NFT utility · Tokenomics · Decentralized governance · Marketplace dynamics · Community-driven product development

Stack

Next.js · React · Figma · Framer · SQL · API integration

AI

Claude · Gemini · Cursor

Education

B.Sc. Computer Science — Vietnamese-German University / Frankfurt UAS · Google UX Design Specialization