# Solo Developing — Fabien Chung, Freelance Full-Stack Developer, Montréal

> Solo Developing is the freelance practice of Fabien Chung, a Montréal full-stack developer with 20+ years of experience: web, mobile and AI automation. Direct, solo, delivered.

Solo Developing · Fabien Chung · Montréal

## From ideas to applications.

I design and build web and mobile applications, from architecture to production.

-   [My recommendations](https://solodeveloping.com/about#recommendations)
-   [GitHub](https://github.com/KooliFab)

### Selected work

01 / Latest project · In production

#### Hiiba

Giving items a second life in the United Arab Emirates.

Co-founder & CTO

Complete platform

Mobile app · Admin panel & analytics · Web app

Flutter · Next.js · Postgres

[Explore the project](https://hiiba.ae/)

![Two neighbours handing over a lamp through Hiiba.](https://solodeveloping.com/images/projects/hiiba-giving.webp)

![Hiiba app: available items, distance filters and categories.](https://solodeveloping.com/images/projects/hiiba-app.webp)

-   Lamp given · Dubai Marina
-   +50 Eco Reward points

02 / PWA · In production

#### ZeLoop Spotter

Spot litter. Map recycling bins.

Flutter Web PWA · VeChain

[Explore the project](https://spotter.zeloop.net/)

![ZeLoop Spotter dashboard: litter spotted, mapped bins and rewards.](https://solodeveloping.com/images/projects/spotter-dashboard.webp)

-   Recycling bin mapped
-   +5 B3TR earned

03 / Web & mobile

#### BarcodeVibe

Compare grocery prices.

iOS and Android mobile app

Flutter · React · Astro

[Explore the project](https://barcodevibe.com/)

![BarcodeVibe app: community feed of spotted grocery prices.](https://solodeveloping.com/images/projects/barcodevibe-feed.webp)

-   $2.00 off spotted at Walmart
-   Shrinkflation alert: −65 g
-   Unit price per 100 g

stack.sh

### What I've shipped

From iOS app to VeChain smart contract — shipped to production.

#### iOS & Android

Since 2012 · 11 apps

-   [ZeLoop](https://zeloop.net/)
-   [LOVT](https://laruchequebec.com/fr/projets/ameliorez-votre-quotidien-investissez-dans-la-jeunesse)
-   [Cogni](https://cognibook.com/)
-   [Hiiba](https://hiiba.ae/)
-   [BarcodeVibe](https://barcodevibe.com/)
-   [Artkiddo](https://artkiddo.bencool.ca/)
-   [Myride901](https://www.myride901.com/)
-   [OpenFleet](https://www.openfleet.com/)
-   [Koolicar](https://www.youtube.com/c/koolicar/videos)
-   [Stepchain](https://play.google.com/store/apps/details?id=com.absolutelydigital.stepchain&hl=en_CA)
-   [RecharjMe](https://recharjme.com/)

#### Websites & platforms

13 sites & apps · React · Next.js · Astro

-   [LOVT](https://laruchequebec.com/fr/projets/ameliorez-votre-quotidien-investissez-dans-la-jeunesse)
-   [Cogni](https://cognibook.web.app/)
-   [Spotter](https://governance.vebetterdao.org/apps/0x5bb2ef79e3b23a39d13b02cea56780627ce65664e1cb037232a615583f6c4d77)
-   [BarcodeVibe](https://barcodevibe.com/)
-   [Artkiddo](https://artkiddo.bencool.ca/)
-   [Onboarding x5](https://pif-onboarding.web.app/)
-   [Hiiba](https://hiiba.ae/)
-   [Exchange](https://exchange.zeloop.net/)
-   [Ben Cool](https://bencool.ca/)

#### Backend & API

6 projects · Node.js · Supabase · PHP · Flask

-   [Reward Engine](https://zeloop.net/)
-   [Hiiba](https://hiiba.ae/)
-   [Exchange](https://exchange.zeloop.net/)
-   [Myride901](https://www.myride901.com/)
-   [Stepchain](https://play.google.com/store/apps/details?id=com.absolutelydigital.stepchain&hl=en_CA)
-   [RecharjMe](https://recharjme.com/)

#### Blockchain

4 chains · Solidity · C++

-   [ZeLoop](https://zeloop.net/)
-   [Reward E.](https://zeloop.net/)
-   [Spotter](https://spotter.zeloop.net/)
-   [Stepchain](https://play.google.com/store/apps/details?id=com.absolutelydigital.stepchain&hl=en_CA)
-   [Pockero](https://www.f6s.com/company/pockeronetwork)

#### Open Source projects

pub.dev · GitHub

-   [pwa\_installer](https://pub.dev/packages/pwa_installer)
-   [Artkiddo](https://github.com/KooliFab/artkiddo)

ai.workflow

### How I build with AI

Agents write a lot of my code. Architecture, contracts and review stay mine.

#### Agentic development

Claude Code, Codex, Gemini and Jules every day. Each repository ships its own agent instructions (AGENTS.md, CLAUDE.md) and MCP servers.

#### Lead / agent contract

I write the execution plan and the contracts. Each agent delivers a bounded batch — files, tests, migrations — and I review it before it is merged.

#### Guardrails first

Tests, typecheck, lint, pgTAP database tests and GitHub Actions CI gate every change. Speed without the quality debt.

#### Project knowledge base

Docs of 5 products synced from their repositories, indexed as a knowledge graph and queried by custom Claude skills.

### INITIATE CONTACT

System ready. Awaiting transmission.

contact\_system.exe

\> CONTACT SYSTEM INITIALIZED...
\> READY TO RECEIVE INPUT...

-   STATUS: READY
-   [EMAIL ME](mailto:hello@solodeveloping.com?subject=Project%20inquiry)

-   [hello@solodeveloping.com](mailto:hello@solodeveloping.com?subject=Project%20inquiry)

-   |
-   RESPONSE\_TIME: < 24h

-   100%

-   On-Time Delivery

-   20+

-   Years Experience

-   15+

-   Apps Shipped

### [FOLLOW ME ON](mailto:hello@solodeveloping.com)

-   [LinkedIn](https://www.linkedin.com/in/%F0%9F%92%BB-fabien-chung-a1793830/)
-   [GitHub](https://github.com/KooliFab)
-   [Pub.dev](https://pub.dev/publishers/solodeveloping.com/packages)
-   [Medium](https://medium.com/@fabien.chung)

Solo Developing is the independent practice of Fabien Chung, a Montréal-based full-stack developer with 20+ years of experience. Mobile apps (Flutter, iOS, Android), web platforms (React, Node.js) and AI automation — designed, built and delivered by the developer you talk to, with no agency in between.

Available for freelance and contract work, remote worldwide or in Montréal, in English and French. Flutter apps since 2018 with 15+ shipped, native iOS since 2012, React 19 and Node.js platforms, Supabase and PostgreSQL backends, and daily agentic development with specs, tests and CI as guardrails. One person, total accountability: ship in days, not months.

© 2026 SOLO DEVELOPING. SYSTEM INTEGRITY 100%.

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- Source: https://solodeveloping.com/
- Version française: https://solodeveloping.com/fr/
- Site guide for AI agents: https://solodeveloping.com/llms.txt