Brian Duffy

One-person technical department.

I build interactive software end to end: XR, mobile and PC. I was lead developer on a commercially released VR title, I’m CTO at ElfMoNN, and I design and ship my own products solo.

See the work Start a conversation

Unity since 2016. Contracting since 2022. 44 projects for 9 clients, 5.0 average.

Quest 2 and 3. Steam. Android. iOS. Web.

Currently

building Screen Nook and Plainly, and open to contract work.

Selected work

Games, XR and applications.

All projects
  1. Memoreum Released A sci-fi action horror campaign for standalone VR. I joined as a contractor, was quickly promoted to lead developer, and wrote 77% of the code in the shipped game. Unity, URP, Hurricane VR, Meta XR, Wwise, Addressables
  2. Elfmonn Released An AR storytelling app for young children. I joined as one of several contractors and now own the codebase outright, as its sole developer and CTO. Unity, ARFoundation, AWS CloudFront, RevenueCat, Firebase
  3. Screen Nook On Steam 1 December 2026 A small 3D street that lives at the edge of your screen and follows your day. A solo project, out on Steam for Windows on 1 December 2026. Unity, URP, C#, Win32
  4. Plainly In development A calm daily planner for anyone who finds most planning apps harder work than they should be. Designed and built solo, for the web, Windows and Android. TypeScript, Tauri, Supabase, Cloudflare

What I do

How this works

  • Prototype, or a vertical slice

    something playable, to prove the idea or to pitch it.

  • Full build

    concept through to store release.

  • Ongoing support

    a set number of days each month, on a rolling basis.

  • Consultation and rescue

    performance, architecture, or a project that has stalled.

  • Brian did an amazing job on the initial delivery. Seems like Brian understood exactly what I was looking for and was able to implement it flawlessly. Excited to continue working with Brian in the future!

    Abe Faridi, United States

  • Very good, clean and high-quality service. There was a slight misunderstanding about the project requirements, but the seller went out of his way to deliver top-notch result. Highly recommend

    abbie222, Sweden

  • Brian was very professional and his work absolutely defines his skills. Very open to feedback and delivers top-quality efforts.

    Gaurav Obhan, Canada

  • Patient 8 Games
  • ElfMoNN

Have something you want built?

Most of what I’ve built started as a conversation. Start one.

[email protected]