I recently got a job as an IT Administrator in a power generation company. Although, I had worked for almost four years in an IT Support role in another company prior to getting this new job.
I have a B.sc in Computer Engineering, CCNA and MCSA, which are still valid and active.

I need an advice on the types of professional exams to write to keep me relevant in the IT industry.

I'm thinking of writing my CCNP very soon. Since my CCNA will be expiring late next year(i.e late 2019).

My long-term goal is to become a cyber security expert. What path should I take in achieving this? I don't want to remain in this IT Support/ Administrator position for long.