Online Marketing to Promote Jobs and Marketing Strategy Refresh

I run a business where our primary offering is promote jobs and opportunities that companies post on our page. Promotion is usually done through LinkedIn, Twitter, Facebook, Instagram and a monthly newsletter. I would like a complete refresh of the strategy we use to promote the roles to increase the traffic and performance of the ads/views. I would also like a general marketing strategy refresh to build an online community to strengthen our brand.

The business is a non-profit organisation with the mission to encourage ethnic minorities into STEM subjects.
Here are our socials, please review and provide a brief comment on your opinion, prior to responding to the ad. You will be able to see how we promote the jobs and our general posting frequency and content:
https://bbstem.co.uk/
https://jobs.bbstem.co.uk/
https://www.linkedin.com/company/bb-stem
https://www.facebook.com/BBSTEMS/
https://twitter.com/BB_STEM
https://www.instagram.com/bbstem/

This project has the opportunity to be a one-off engagement or a recurring engagement should you show this is an area of the business you can lead (like a 3rd party)