Comprehensive On-Page SEO Overhaul

I want to tighten every on-page SEO screw on https://www.aventusinformatics.com/. The immediate focus is classic but essential work: refreshing keyword usage across the site, rewriting meta titles and descriptions so they compel clicks, and strengthening internal linking so authority flows naturally... (Budget: ₹1500 - ₹12500 INR, Jobs: Content Strategy, Content Writing, Internet Marketing, Keyword Research, Link Building, Marketing, SEO, Website Optimization)