Onopemipo Mark Agoi

I'm Onopemipo Mark Agoi

Software Developer — building as MarcornDev

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Onopemipo Mark Agoi

About Me

Building software, one detail at a time.

I'm a software developer working across web, mobile and game development, from responsive frontend interfaces to native Android and iOS apps built with Kotlin and Swift, to games built in Unity with C#. I enjoy taking an idea and turning it into something people can actually use, whatever the platform.

I've shipped 10 apps under my own Google Play developer account, including native games and utilities. My focus stays on writing dependable, well-structured code and paying attention to the small things, spacing, hierarchy, motion, performance that separate a finished product from a prototype.

Hire Me

Skills

What I work with

Languages

  • JavaScript
  • Python
  • Java
  • Kotlin
  • Swift
  • C#
  • C++
  • C
  • HTML5
  • CSS3

Platforms & Domains

Web Development

Frontend & backend, responsive and full-stack.

Mobile — iOS & Android

Native apps built with Swift and Kotlin.

Game Development

2D & 3D games and interactive experiences.

Tools & Process

Git & GitHub85%
Responsive / Cross-Platform UI90%
Debugging & Optimization80%

Featured Projects

Selected work

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LATA HOUSE Schools

A modern school website redesign covering admissions, gallery, academics and contact, built with a clean, responsive layout.

  • HTML
  • CSS
  • JavaScript
  • Responsive
  • Admissions
  • Gallery
View Site
👁

Coach Dave

A landing page for a digital product for Coach Dave.

  • HTML
  • CSS
  • JavaScript
  • Responsive
  • React
  • Tailwind
View Site

Tic-Tac-Toe

A native Android game built in Unity, one of 10 apps I shipped under my Google Play developer account. The account has since been sold, so this build is available as a direct download.

  • C#
  • Unity
  • Android
  • Game Dev
APK — Coming Soon

Services

What I offer

Business Websites

Professional sites that give a company credibility online.

School Websites

Admissions, academics and gallery pages built for clarity.

Landing Pages

Focused, conversion-minded pages for products and launches.

Portfolio Websites

Personal and studio sites that showcase work well.

Website Redesign

Modernising an existing site without losing what works.

Responsive Development

Sites that work cleanly across phone, tablet and desktop.

Mobile App Development

Native Android and iOS apps built with Kotlin and Swift.

Game Development

2D and 3D games built with Unity and C#.

Why work with me

  • Clean CodeReadable, maintainable, built to last
  • Responsive DesignLooks right on every screen
  • Attention to DetailThe small things aren't skipped
  • Fast DeliveryClear timelines, no surprises
  • Good CommunicationYou always know where things stand

Contact

Let's build something together.

Have a project in mind, or just want to say hello? I'd like to hear from you.

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