Mengkoung Key

Entrepreneur · Product Builder · Marketing

I build products where design, marketing, AI, and human behavior meet. Turning traditional businesses into modern, scalable experiences.

Hey, Just An Intro

A full-stack product builder based in Barcelona. Obsessed with one idea: good products come from real user problems, solved simply.

Building for Founders

I'm a product person who ships — UX, design, engineering and go-to-market in one head. Great products don't come from more features; they come from understanding the user's real problem and keeping the solution simple.

Let's Work Together

When I take on a project, I don't just build — I consult. We shape product strategy together: what to build, why it matters, and how to keep it simple. Bring a rough sketch, an MVP that needs to scale, or a whole product to launch.

Experience & Education
©2026

Where I've trained.

Cross-disciplinary training across design, business, and technology — from Cambodia to Barcelona to Taipei.

  • Unilinks.co
  • Classora
  • Norea City
  • Unimate
  • Startupack
  • KPMG
  • Chamni's Eye
  • Production House Asia
  • AustCham Thailand
  • Canadia Bank
  • Harbour.Space University
  • UTCC
  • Shih Chien University
  • HdWM Mannheim
  • VŠFS Prague
  • University of Newcastle Australia
Featured Works
©2026

Selected Work.

Five ventures across education, SaaS and community — each designed, engineered and shipped end-to-end.

View all projects
Approach
©2026

How I build.

A three-step process refined across five ventures — from first sketch to shipped product, with no hand-off in between.

Get in touch
01

Discover

Understand the problem, the users and the market. Interviews, competitor teardowns, and one clear thesis to build against.

02

Design

Sketch flows, prototype in Figma, iterate with real users until the shape feels obvious. Design that survives contact with reality.

03

Ship

Full-stack build in Next.js, React and Firebase. Deploy fast, measure, learn, iterate. Done beats perfect — but done well.

Contact now
  • Discover30%
  • Design30%
  • Ship40%
Services
©2026

What I do.

Full-stack from strategy to production — I don't hand off, I build the whole thing.

(01)

Product Strategy

Turning fuzzy ideas into concrete product bets. Positioning, scope, roadmap and the first version worth shipping.

(02)

Product Design

End-to-end UX and UI — flows, wireframes, Figma prototypes, design systems. Fewer meetings, more pixels.

(03)

Full-Stack Engineering

Next.js, React, TypeScript, Firebase, Supabase, Node. From marketing site to production app — one person, one stack.

(04)

Rapid MVP Builds

Kickoff to launched product in weeks. Right-sized architecture, fast iteration, no over-engineering.

(05)

Founder-Level Ownership

Not a contractor — a builder. I sweat the details, ship the awkward parts, and stick around after launch.

(06)

Marketing & Growth

Landing pages that convert, SEO that actually shows up, and product loops built into the app from day one.

Track Record
©2026

By the numbers.

What I've shipped so far — measured, not marketed.

Building products

03+years

Shipping ventures full-stack since 2023 — design, engineering and go-to-market in one head.

Ventures in production

05live

Unilinks, Startupack, Classora, Unimate, Norea City — each designed and shipped end-to-end.

Students placed

120+onboarded

International students matched to universities across Asia and Europe through Unilinks.

How Fast
©2026

Weeks, not months.

Small team, one full-stack builder, no waiting on hand-offs. Ideas ship while momentum is still there.

Time to launch

4wks

From kickoff to a launched MVP. Right-sized, production-ready, live in front of users.

Team size

1person

Design + code + strategy + ops in one head. No hand-offs, no telephone game, no dropped context.

Ventures shipped

5live

End-to-end, in production, in the last three years. Not decks — running products.

Tech Stack
©2026

Built with the best.

The tools I reach for when I want to ship fast without cutting corners.

Design

  • Figma
  • Framer
  • Rive

Frontend

  • Next.js
  • React
  • TypeScript
  • Tailwind

Backend

  • Node
  • Firebase
  • Supabase
  • Postgres

AI & Tooling

  • Claude
  • OpenAI
  • Cursor
  • Vercel
FAQ
©2026

Common questions.

The things people usually ask before we start working together.

Contact
©2026

Let's build
something.

Have an idea, a rough sketch, or a product to launch? I build and consult — helping founders solve real user problems, simply.

Location

Barcelona, Spain

Availability

Open for select projects

Response time

Within 24 hours