SEO for a new Job portal. Need to increase domain authority and increase google ranking.

We are a new job portal trying to increase our google ranking. Can you help us with that?

our website is: https://www.theremoter.net/
Keywords are: remote jobs, workfromhome jobs etc

Our comptetitors are: nodesk.co
Weworkremotely.com
Remote.co
Remoteok.com
Flexjobs.com