I have four industrial business websites about to roll out—each designed and ready for code—but I still need the technical backbone. You’ll tackle them one at a time, with the first site required to launch no later than 31 December. What I expect you to deliver on every build: • Securely connect all on-page forms to a fresh MySQL database, sanitising inputs and storing data in well-structured tables. • Wire up GA4 through Google Tag Manager, set event triggers for every form submission and key click, and pair that data with Meta Pixel so marketing can retarget confidently. • Drop in invisible reCAPTCHA v3 to keep spam at bay and fine-tune performance until Lighthouse consistently reports 90 or better across desktop and mobile. The stack is fixed: Next.js (App Router) plus MySQL on the backend. Design, content and hosting are already handled; I only need the code that makes everything tick. A few ground rules: I work exclusively with individual freelancers, so agencies need not apply. “Hi” messages get filtered out—save us both time by sending a concise portfolio of relevant Next.js work and a single figure covering all four sites, broken down per site if you prefer. If your portfolio shows rock-solid form handling, analytics integrations and fast, accessible builds, I’ll share the design files for Site #1 so you can confirm scope and schedule.