As an architect in the web development space for over 14 years, I've honed a range of skills that make me a strong contender for your React-based Equation Catalog Website project. My core focus centers on producing quality work within reasonable timeframes, and this aligns perfectly with your need for a comprehensive yet efficient platform. My expertise covers graphics, logos, APIs & web services and more.
Having built complex websites using React.js, I'm well-versed with components, hooks, and modern JavaScript (ES6+). Furthermore, MUI and Microservices Architecture are familiar territories for me; enabling me to provide a responsive MUI-based UI that's complemented by scalable back-end microservices to handle your large equation database seamlessly.
If chosen for this project, you'll be gaining the versatility required to deliver all the key features you desire: advanced search functionalities (keyword or categories), equation playlists, user-friendly equation creation and addition interfaces, user management systems including premium options utilizing payment gateways like Stripe or Paypal, etc. Also centralizing on my mission of client satisfaction, I'll emphasize quick communication and ensure timely deliverables.