Real-time Data Processing Setup with Kafka

I'm in need of an expert to set up a Kafka cluster for my web applications, to primarily aid in real-time data processing.

Requirements:
- Set up Kafka cluster from scratch
- Configure cluster for optimal performance in real-time data processing
- Integrate Kafka with web application data sources
- Ensure the setup is secure and reliable

Ideal Skills and Experience:
- Proven experience in setting up and configuring Kafka for real-time data processing
- Proficiency in working with web application data sources
- Strong understanding of Kafka's architecture and best practices
- Ability to ensure secure and reliable setup