Vercel / Next.js Specialist Needed — Firewall and Deployment Troubleshooting

We need a consultant with demonstrated experience resolving Vercel Firewall/WAF and Next.js deployment problems to help stabilize our live commercial real estate CRM. Our application uses Next.js 15, Vercel Pro, and Supabase/PostgreSQL, with multi-tenant permissions and Row Level Security. Restrictive firewall rules introduced during a multi-tenant transition complicated Preview deployments, authentication, middleware, and API access. Although the firewall has since been simplified, we need to restore a reliable GitHub-to-Vercel deployment process, verify our existing staging configuration, and make Production releases and rollbacks predictable. Required experience Personally diagnosing and resolving Vercel Firewall/WAF and Deployment Protection issues. Troubleshooting Next.js middleware, authentication, routing, and production builds. Configuring GitHub-to-Vercel automatic deployments, Preview environments, and environment variables. Working with Supabase, PostgreSQL RLS, and multi-tenant applications. General full-stack experience alone is insufficient. We will select based on specific, comparable work you have personally completed and a technical discussion about your experience. How the engagement will work We recognize that you cannot diagnose our system or responsibly estimate the entire repair before reviewing it. We are not requesting a total-project estimate upfront. Instead, we will authorize work in short, paid stages. For example, the first stage may be a few agreed hours to inspect the configuration and available evidence, then report back with: - What you found and what remains uncertain. - Potential causes and solutions. - Your recommended next step and the hours needed for that step. Each stage will have an agreed hour limit and report-back deadline. Further investigation or implementation requires approval before additional hours are incurred. The first review need not produce a complete diagnosis, but it should provide useful findings and a clear basis for deciding what comes next. We are willing to pay a higher hourly rate for directly relevant expertise, sound judgment, and efficient troubleshooting. We expect that experience to shorten the path to a solution. Necessary investigation of our application is paid work; acquiring foundational knowledge of the required platforms is outside the scope. Hours billed must reflect actual project work and be supported by verifiable time records and meaningful task descriptions. Please include in your proposal - Two comparable problems you personally resolved, explaining your role, the root cause, and the solution. - Your hourly rate and earliest availability. - Your approach to a short initial review and willingness to work through approved stages with regular checkpoints. You will work directly with our internal technical lead. This is a focused assessment and remediation engagement, not a CRM rebuild or routine feature-development role. We want to begin as soon as possible.