Senior Next.js Developer: Fix Custom CMS, SSR/SEO & Add Modules for Luxury Hotel

We are a premium boutique luxury hotel brand (Lov'Inn Kazdağları). Our website is built on Next.js with a custom CMS. The design is strong, but the build is unfinished and underperforming. We need a senior developer to fix and extend it, on a milestone basis — starting with a small paid trial task. NOTE: We have (or can obtain) full source code, repository and hosting access. Please confirm you are comfortable working on an existing Next.js + custom CMS codebase. MILESTONE 1 (TRIAL): - Suite pages currently show "content not found" — fix the CMS-to-frontend data rendering so suites display dynamically. - Most primary buttons link to "#" — fix all CTAs and connect the booking system. NEXT MILESTONES: - Proper SSR/SSG so all content is crawlable; pass Google's 2026 Core Web Vitals. - Unique, keyword-rich titles & meta descriptions, editable from the panel. - Schema.org LodgingBusiness/Hotel structured data for rich results. - Remove duplicated DOM content blocks; add TR/EN hreflang. - Dynamic grid/section manager editable from the dashboard. - New section: "AETHER Kazdağları · By Lov'Inn" (fine-dining brand page). - New sub-brand section: "Lov'Inn Vadi" (upcoming property). - Elegant, panel-editable mobile hamburger menu. - GTM (GTM-KKZBBB9P) + Meta Pixel continuity across all modules. - Dynamic XML sitemap + clean robots.txt, ready for Google Search Console. Individual senior