Secure Twilio Node.js & AWS Lambda Integration

I'm seeking a savvy developer who can integrate Twilio with node.js and AWS Lambda for my project, with an enhanced emphasis on restricting SMS fraud.

Key functionalities:

- Sending SMS notifications
- Making phone calls
- Receiving SMS messages

SMS fraud countermeasures must include:

- Phone number verification via API integration with a verification service
- Content filtering, ensuring invalid or harmful content is restricted
- Implementing rate limiting to control the frequency of specific actions

The ideal candidates should have significant experience with Twilio and node.js, familiarity with AWS Lambda, and a strong understanding of SMS fraud prevention methods. Hands-on experience with API verification services will be a valuable asset. Anticipation of potential security holes and the implementation of effective prevention measures is crucial in this project. It's important that the delivered work should not only fulfill its functional requirements but also be robust and secure.