Moving from Specialist to Sr. Specialist

I’m currently on maternity leave from my role as a Regulatory Affairs Specialist at a large medical device company. I was recently approached by a former colleague (now a hiring manager) about a Senior Specialist position at a mid-sized med device company.

The opportunity is tempting for a few reasons:

Fully remote (my current role is hybrid).

Higher salary than my current position.

Seems like an opportunity to grow faster in my career.

However, I have some reservations:

I have 4 years of experience in regulatory affairs and an advanced degree, but I worry about whether I’m truly ready for a senior role.

I’ve only worked in large companies—how does the regulatory environment and workload differ in a mid-sized company?

I want to ensure I develop properly rather than advancing too quickly and struggling.

For those who have made the jump from specialist to senior specialist, how did you know you were ready? For those who have worked in both large and mid-sized companies, what were the biggest differences in regulatory affairs responsibilities, expectations, and career growth?

I appreciate any insights you can share!