Senior Developer for E-Commerce SaaS MVP

Job ID: 40202380

Budget: $5,000 – $10,000 USD

Project Title: Senior Architect for Multi-Tenant SaaS (Laravel/Node) - 8 Week MVP
The Gist: I am building a B2B SaaS (white-label e-commerce), and I need a senior developer to help me ship the MVP. I’m the Project Lead, not a recruiter. I have a clear spec, a strict "No WordPress" rule, and a decent budget for the right MVP scope.

Budget: Open to proposals ($5k - $8k range). We value quality architecture over the lowest bid. Please quote based on using a SaaS Boilerplate to save time.

The Problem: We have local retail clients using an ERP called "Billz." They need online stores. We need to build a central SaaS platform where we can spin up a shop for them instantly.

The Hard Part: Syncing inventory from Billz via JSON-RPC 2.0. The Constraint: This must be a Multi-Tenant architecture (One codebase, many databases/tenants).

What I need from you: I am not looking for someone to code a login screen from scratch. I want you to use a SaaS Starter Kit (like Laravel Spark, Filament, SaaS Pegasus, etc.) so we can focus on the unique features.

The Stack:

Backend: You tell me. (I prefer Laravel or Node.js).

Database: PostgreSQL or MySQL.

Frontend: React, Vue, or Blade (if using Livewire).

Three deal-breakers (Please read):

No CMS: If you suggest WordPress/WooCommerce, this isn't for you.

Queues are mandatory: The ERP sync is heavy. I need someone who knows how to offload this to background workers (Redis/SQS) so the UI doesn't freeze.

Timeline: We have ~8 weeks to get a working MVP live.

How to apply: Please don't send a generic copy-paste cover letter. Just answer these two questions at the top:

Which SaaS boilerplate/starter kit would you use to speed this up?

How would you handle the JSON-RPC rate limits if 10 tenants try to sync at once?