Secure Portfolio Website Development

I'm looking for an experienced web developer to create a secure portfolio website for my company. The site should include the following sections:

- About Us
- Project Showcase
- Contact Information
- Payment Gateway

The website must be protected with a robust security system, including at least one of the following: Firewall, Data Encryption, or Intrusion Detection.

Ideal Skills and Experience:
- Web development expertise, particularly in portfolio sites
- Experience in implementing security measures such as firewalls, data encryption, or intrusion detection
- Familiarity with integrating payment gateways

Please provide samples of previous work and outline your approach to securing the site.