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Base44 developer in Belfast

A Base44 developer in Belfast, building for anywhere.

I'm Aatman (AJ) Jain, a 15-year-old developer and Base44 Partner based in Belfast, Northern Ireland. I've shipped 20+ apps for real clients across 8 industries, almost all of it remotely.

Greetings
from Belfast

Belfast, NI
Made in Belfast

Belfast time

Saturday, BST

If you're looking for someone in Northern Ireland who builds on Base44, hello. If you're further away, that's fine too: the work is remote by default.

At a glance

Based in
Belfast, Northern Ireland, UK
Works
Remotely, on UK time
Platform
Base44 (Base44 Partner)
Shipped
20+ apps for clients across 8 industries
Recognition
Best Build (2026) and Sloan NI winner
Email
hello@aatmanjain.com

01

Local, but remote by default

I live and work in Belfast. Almost all of my work is remote, so it doesn't matter much whether you're down the road, elsewhere in the UK or further away. If you're in the UK or Ireland, we share a time zone, so calls happen at sensible times for both of us.

02

What I build

Full-stack apps on Base44: the data, the access rules, the backend and a frontend that looks designed. That includes UI/UX design, full app builds, Stripe, Resend and API integrations, security reviews, SEO and performance, and AI agents and automation.

03

Made in Belfast

Hattle, my World Cup sweepstake app, says "made in belfast" in its footer. I sketched it on paper and shipped it in 8 hours. The Gridiron Guide, which I built with my dad, won Best Build at Base44's Big Game App competition in 2026. And I keep an unofficial archive of every Base44 Office Hours session up to #70.

04

For Northern Ireland businesses and startups

Got an idea for an app, an internal tool that's outgrown its spreadsheet, or a Base44 app that's stuck? I'd like to hear about it. Tell me what it needs to do and who uses it, and I'll tell you honestly whether Base44 is the right fit, and whether I am.

And if you're a Belfast or NI team with room for an intern, I'm looking for an internship.

05

Recognition

Base44 Partner for about a year, with a 5.0 rating from 9 reviews on Base44. Best Build at Base44's Big Game App competition (2026). Sloan NI winner. Plus 11 certificates, from Google UX design to AI app building. All on the recognition page.

Proof

The proof.

apps shipped for clients
20+
industries
8
from 9 reviews on Base44
5.0

What people said

Read every review
  • AJ is one of those people who makes every project better.

    Charles LangBase44 review
  • AJ is one of the youngest and brightest minds around Base44!

    Sam TalaricoBase44 review

Things I built

All my work
  • hattle.app
    The Hattle homepage during the 2026 World Cup: a sticker wall around the HATTLE wordmark, the scribble who'd you get?, a Free forever badge and two buttons.

    Hattle

    Made in Belfast. Shipped in 8 hours.

    Read the case study
  • gridiron-guide-ai.base44.app
    Game Situations in The Gridiron Guide: an overtime scoreboard reading AJ's team (Eagles) 24, Dad's team (Cowboys) 24, a sticky-note tip from AJ and four play options with risk and success odds.

    The Gridiron Guide

    Best Build, 2026. Built with my dad.

    Read the case study
  • unofficial-events.base44.app
    The recap page for Office Hours #68 on Superagents, headed Less chasing. More doing., with a summary card, recording date, host and format. Unofficial, community-made.
    Unofficial, community-made

    Office Hours archive

    Every session up to #70. Unofficial, community-made.

    Read the case study
FAQ

Questions people ask.

Yes. I'm Aatman (AJ) Jain, a developer and Base44 Partner based in Belfast, Northern Ireland. I build full-stack Base44 apps, from design and data to payments and security, and I work remotely with clients.

Building something in Northern Ireland?

Or anywhere else. Tell me about it and I'll tell you straight if I'm the right person for it.