Web Application & Website Utilizing API

I'm in immediate need of a prolific developer to create a web application as well as a website that critically use API. Lack of specificity doesn't mean lack of quality; I am looking for a developer who can craft a robust, flexible platform capable of future growth and adaptability.

Key Features:
- User-friendly interface
- Contemporary visual appeal
- Secure User registration and login system
- Comprehensive search functionality
- Seamless Integration with external APIs

Time Expectation:
As this section was skipped, I'd favor developers who can provide a quick turnaround time without compromising on quality.

Ideal Skills/Experience:
- Proficiency in web application and Website development
- Coding expertise with APIs
- Understanding of user experience principles
- Strong portfolio displaying past relevant projects.