Engineer Certification for a two tier Sandstone Retaining Wall

I'm seeking a qualified engineer to design and certify a sandstone retaining wall. The wall is primarily intended for landscaping terracing and its height falls between 1 to 2 meters.

Key Requirements:
- Certification of the wall's structural integrity
- Design considerations for landscaping support
- Compliance with relevant engineering standards

Ideal Skills:
- Civil or Structural Engineering expertise
- Experience with retaining wall design
- Knowledge of landscape engineering

I need this project completed efficiently and professionally, with all necessary documentation for the wall's certification.