OpenCart Security and Bug Fix

I need an experienced OpenCart developer to fix bugs and enhance security on my site.

Key Tasks:
- Fix Bambora payment extension issue: Ensure customer IP address is sent to Bambora API.
- Improve security:
- Protect against SQL injections.
- Enhance firewall rules:
- Blocking specific IP ranges.
- Rate limiting requests.
- Monitoring and alerting for suspicious activity.
- so;lve but with captcha service

Access:
- cPanel console.
- OpenCart admin dashboard.

Ideal Skills:
- Strong OpenCart development experience.
- In-depth knowledge of web security.
- Familiarity with firewall configurations.