Maintain & Enhance Trade-In Platform

I run a fully-operational, custom-coded web platform with companion mobile apps that let people sell their used smartphones online—think Cashify, but tailored to my market. I now want a reliable developer who can take ownership of the codebase, keep everything running smoothly, and drive the next round of improvements.

The immediate focus is twofold. First, refresh the entire user interface so the experience feels modern, fast, and consistent across web and mobile. Second, refine and extend our payment flow: add a new gateway, tighten security, and make payouts friction-free for sellers.

Alongside those upgrades, you’ll handle routine maintenance: fixing bugs, monitoring performance, updating server dependencies, and suggesting optimizations whenever you spot them. The stack is custom, so you’ll start by reviewing the existing architecture, documenting key modules, and proposing a roadmap for incremental releases.

Deliverables I expect over the first phase:
• An audited codebase with a clear maintenance plan
• New UI/UX mock-ups approved and implemented on both platforms
• Fully tested payment integration rolled out to production
• Deployment notes and version-controlled commits for every change

If you have a solid track record managing live products, especially trade-in or e-commerce systems, let’s talk about timelines and how you prefer to structure milestones.