Senior full-stack developer for multi-vendor marketplace - technical audit + long-term development.

We are building Pmall, a multi-vendor e-commerce marketplace, and we are looking for an experienced Senior Full-Stack Developer to build the platform from the ground up. This will be a completely new build. We are looking for a developer who can take ownership of the technical architecture and develop a scalable, secure, production-ready marketplace. THIS IS NOT a WordPress, Shopify, WooCommerce, or template customization project. Pmall will be a custom marketplace with multiple vendor accounts, customer accounts, product management, order management, commissions, payments, shipping integrations, admin controls, Arabic/RTL support, and additional marketplace-specific workflows. We are looking for someone interested in a long-term relationship who can potentially become the lead developer for the platform as it grows. — Development Future development may include: Marketplace improvements Vendor management systems Commission and payout systems Payment gateway integrations Shipping API integrations Custom-order / RFQ workflows Analytics and reporting Vendor performance tools Customer engagement features Mobile applications B2B marketplace functionality Platform scalability and infrastructure What We Are Looking For You should have strong experience with: Full-stack web development Multi-vendor marketplaces E-commerce platforms REST APIs Database design Payment integrations Admin dashboards Marketplace architecture Production deployment Performance optimization Security best practices Experience with technologies such as React, Next.js, Node.js, Laravel, PostgreSQL, MySQL, AWS or similar modern stacks is preferred. The exact technology stack of the current platform will be shared with shortlisted developers. Very Important Please do NOT send a generic proposal. In your application, please answer the following: Have you personally built or worked on a multi-vendor marketplace? Please send links or screenshots. What marketplace features did you personally develop? Have you worked on an existing codebase created by another developer? How would you approach a technical audit before taking over a project? What are the biggest technical risks you normally look for in a multi-vendor marketplace? Have you implemented commission, vendor payouts or split payments before? Which backend and frontend stack do you recommend for a scalable marketplace and why? Are you comfortable working on a long-term project after the initial audit? Please start your proposal with the word Pmall so we know you have read the full job description. We value clean architecture, clear communication, documentation and long-term maintainability more than simply developing features quickly. We are looking for someone who can potentially become a long-term technical partner for the platform, not just complete one small task.