New to HR in a Small Engineering Firm: What Job Title Fits My Role Best?

I am working in Structural consultants (preparing Construction plans) (Blueprint). We are 13 employees in the company. I am the only HR in that, and others are civil engineers. I am a fresher. Which HR designation suits me? I am working on payroll, recruitment, database management, etc.

As you are a fresher, you can consider the role of HR Executive as your designation.

Hello. I am a fresher in my company working as an HR Executive, and I want to introduce and implement a performance appraisal system in the company for the first time. Could you please advise on the best method and format to use?