Full Stack Dev: Refactor 400k+ Line Codebase + Lead Routing Infrastructure

We're a two-year-old company doing major revenue in lead generation. We buy media, generate leads, and route and sell them to insurance agents. Ping post, tracking, data management at volume, roughly 350,000 leads a month across multiple websites and servers. We've grown fast and our codebase reflects that. We have a few hundred thousand lines of code that needs organizing. A lot of that is cleanup and refactoring: taking hardcoded logic and making it adjustable, and getting our operations running from a centralized dashboard that also handles tracking. Right now every change needs a developer, and we can't onboard new people easily. That's the bottleneck we want solved. Two milestones 1. Organize the codebase. We need a codebase that a new dev can be onboarded into and understand. 2. Build a control panel. Take what's hardcoded, lead routing, reporting, tracking, and put it behind a centralized dashboard we can adjust ourselves. What comes after We'd prefer this becomes long term. Once these two are done well, the next step is custom integrations and ongoing ops work, and by then you'd know this system better than anyone. We're not promising that up front, but we like keeping people who do good work. Important This is a refactor. We don't want everything rewritten. The system runs live and spends real money daily. It stays running the whole time. Who we want -Strong full stack: PHP, API integrations. -Background in affiliate marketing, lead generation, performance marketing, or moving data around at huge scale. Our platform is fundamentally about moving data around, routing it, tracking it, attributing it. High-volume data systems experience counts too. If you have experience in full stack, moving large amounts of data around, are creative, and US-based, let's talk and see if it's a good fit!