Full-Stack Developer AI SaaS For Platform Fixes

We have an existing AI SaaS platform and need a developer to fix several issues before we add more features. Users can create projects and generate content, but some generation requests get stuck without a useful error message. We’ve also found cases where account permissions behave inconsistently, and the dashboard becomes slow as a customer adds more projects. The platform uses Next.js, Node.js, PostgreSQL, and an AI API. We need someone who can understand the current codebase, trace the causes of these issues, and make reliable fixes without rebuilding the platform. Please tell us how you would investigate the stuck generation requests, which issue you would tackle first, and share one relevant application you’ve worked on. We’re looking for someone who can take ownership of the work and communicate clearly as they go.