So, you're looking for a gig that will fulfill your requirement about SEO Google Ranking.
Here the things come:
1. Researching about the business category and competitors/customers activity
2. Finding topics, customers searching about on Google
3. Keyword finding techniques using google suggests, random people, answer-question sites, paid amazing sites
4. Analyzing exact match keywords and making amazing and bold keywords.
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✔ On time delivery (within 24 hours)
✔ Unlimited revisions
✔ Full-time support
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✔ Competitors research
✔ DA, PA, Competition level