Dear Sir.
I am a Senior Full Stack Developer who is specialized in React.js, Redux, Node.js.
Working as a developer in ITA Lab company, I already have 6 years of experience in these fields,
I have designed and developed over 50 websites for different industries and clients.
Reading your description, I feel that I am good fit of your project and I can finish your job perfectly with high quality.
I can development frontend and backend both of your project.
As you mentioned speed improvement, if the project is built with React, speed will be solved, I think.
I will make your project beautiful, clear and solid using material UI and I am going to use Saga Middlewear.
I promise I will keep the deadline, fixing bugs and delivering a qualified code so that you will be satisfied with my working and let you keep long term relationship with me.
I can work full time on your timezone and start working right now.
I am looking forward to hearing from you to discuss more.
Best regards