KNX Smart Home System Design

I'm looking for an expert to help with designing and configuring a KNX system for my home.

Key functionalities include:
- Lighting and shading
- Heating and cooling
- Security and surveillance

Control options should be via:
- Mobile app
- Wall-mounted control panels
- Voice commands

Ideal skills and experience:
- Proficiency in KNX system design and configuration
- Experience with smart home integration
- Knowledge of security systems and IoT devices
- Strong background in user interface design for control systems

Please provide detailed proposals including your approach and relevant experience.