Long-term Off-Page SEO/Link Building Collaboration

We are looking for a reliable Off-Page SEO / Link Building Agency or Freelancer for long-term collaboration. We currently manage SEO for 100+ clients and are looking for a partner who can handle monthly off-page activities and quality backlink creation at competitive rates... (Budget: ₹600 - ₹1500 INR, Jobs: Content Marketing, Digital Marketing, Internet Marketing, Link Building, Marketing, SEO, SEO Auditing)