Flutter/Go Developer for Pre-Launch Marketplace App

Job ID: 40504616

Budget: €2 – €6 EUR

**Title:**
Flutter / Go Developer Needed for Pre-Launch Marketplace App – Stripe Connect Experience Important

**Description:**
Hi,

We are looking for a reliable developer to help maintain, debug, and improve our pre-launch marketplace / live shopping app.

The project is already developed, but we need someone who can understand the existing codebase, fix bugs when necessary, improve current features, and support us as we prepare for launch.

Ideally, we would like to find someone who can become our main technical support person for the project and be available daily for communication, quick checks, improvements, and urgent debugging when needed.

**Current stack:**

* Flutter mobile app
* Go backend
* Supabase database
* Kotlin for the Android floating widget / overlay feature
* Client web checkout flow built with Go-rendered templates, HTML, CSS, JavaScript, and Stripe.js
* HTMX / Alpine.js may also be used in some parts of the web checkout

**Important experience:**
We especially need someone who understands marketplace payment flows, ideally with Stripe Connect or similar systems.

Experience with the following is important:

* Stripe Connect
* Connected accounts
* KYC / onboarding flows
* Marketplace checkout logic
* Platform fees / commissions
* PaymentIntent flow
* Payment status handling
* Split payment logic or marketplace fund distribution

**What we need:**

* Maintain the existing project
* Fix bugs when they appear
* Improve existing features
* Help with Stripe Connect / marketplace payment logic
* Support the client checkout flow
* Review and understand the current backend and database logic
* Be available daily for communication and support when needed
* Communicate clearly and regularly
* Be comfortable working on an early-stage startup product before launch

**Budget:**
We are pre-launch and working with a small starting budget, roughly around $100–$150/month depending on workload and availability. We are looking for someone who can be involved on a regular basis to help maintain, improve, and support the project as we move toward launch. Budget can increase later if the collaboration works well and the project grows.

**Ideal profile:**

* Strong Flutter experience
* Experience with Go backend
* Comfortable with Supabase
* Experience with Stripe Connect or marketplace payments
* Basic Kotlin / Android native knowledge is a plus
* Comfortable with HTML, CSS, JavaScript, and Stripe.js
* Familiarity with HTMX / Alpine.js is a plus
* Able to work independently
* Honest, responsive, and reliable
* Interested in joining an early-stage product before launch

Please apply only if you are comfortable with the starting budget, the early-stage nature of the project, and being available daily for communication or urgent support when needed.

When applying, please briefly tell us about your relevant experience, your availability, and whether you are comfortable with the starting budget.

Thank you.