Hello, there. Hope you are doing well.
I have read your job description very carefully and I see you want to make the website with React+Node/Express+Mysql.
As a senior full-stack web developer, I mastered the above techies and so I am sure I can do your project perfectly for you.
I assure you I will do my best to work with you on your project to present the best possible outcome for you. I will also do my best to correct any area of work where quality comes into question, I want to have pride in my service to your company and the final product provided.
I look forward to working with you.
Thanks & Regards