Build Kids Elevated Timber Play Platform

Looking for a carpenter to build and install an elevated timber play platform similar to the attached picture. Approximate size: * 1200 × 2200 mm * Platform height approx. 1500-1400 mm * 4 legs with open space underneath * High safety railing around the platform * Ladder/climbing slats on the right-hand side * Structural plywood platform instead of a mattress/slat base The left side and rear will be against masonry walls and can be securely fixed/anchored to the walls for extra stability. It needs to be strong, safe and suitable for children. Happy for the carpenter to recommend suitable timber sizes, bracing, plywood thickness and fixing methods. Please quote for materials, construction and installation.