#. Post on your personal account, repost or "talk about your post" from your startup account --> be a person on LinkedIn belonging to a company, don't be a company.
#. Don't direct your posts to customers, direct it to "the industry", by talking about observations, challenges, etc. --> This will create more initial engagement as you likely have more peers than customers in your network --> more engagement increases visibility of your posts to 2nd/3rd degree connections.
#. Tell stories on the issues you saw, thoughts you had, how you helped a person/team (!) in a company, always add some picture, try to have "open ended" thoughts or ask questions.
#. Comment on other people's posts if they help you shape the image of a knowledgable guy enjoying to help others.
#. Don't talk about how great you are, talk about how/why your company/product/service is great for business problems like xyz. (if needed, let your company account talk about how great you are)
As on all social networks, the algorithm keeps changing. But I found that this behavior will establish and show you as a connected and knowledgeable person, and by proxy the company gets visibility as well.
I was with a company in digital transformation services which got ~30% of its leads from LinkedIn (and equal conversion rates to jobs than other means but at much lower cost), just by coaching its Sales to post stories on how excited they are to help others solve some business problems --> Customers got in touch because they could relate to the problem or considered them knowledgeable on similar topics.
And soon, also you will be part of this modern style of doing business that many of us would love to stop /s