When you write a LinkedIn summary, keep it basic.  In a nutshell, what are you known for? What is your value proposition? What's your identity? And how does your work and skills help other people?

Keep it rolling with specific details, like: – Your title and company – BRIEFLY what you do at the job – Again, how your job helps people – Specialties or areas of expertise if you need to describe your role a bit further

In the final step, put a stamp on your LinkedIn summary. By now the reader knows who you are and what you do. Now, finish out with a strong “closer” sentence.  Similar to your opening line, what's your mission as a working professional? What are you passionate 

about? And how does your passion help other people?