Need help installing smart home devices and automation system

I'm looking for someone experienced in home automation to help install and set up several smart devices in my house. This includes smart lights, thermostats, and security cameras. I want everything to be connected and controlled via a single app. Ideally, the person should be familiar with popular smart home platforms and able to troubleshoot any connectivity issues. The house is a two-story with a modern layout, and I want the installation done efficiently and neatly.