Hello there,
As an experienced Software Engineer, I've spent over a decade refining my skills in both JavaScript and PHP, two of the primary languages you'll need for this project. From what I gather, your project requires immediate attention to UI fixes as well as some backend changes, and I assure you that my proficiency in React, React Native and PHP frameworks like Laravel can handle these tasks with ease. Whether it's rectifying bugs or making any necessary changes, I'm confident in providing efficient and effective solutions.
Furthermore, your strict deadline is completely understandable, and I guarantee you full dedication throughout the next 8-10 hours - not just putting in the time but delivering tangible results. My adaptability with different databases such as MySQL and PostgreSQL also comes in handy when working on diverse projects, as do my server and deployment management skills with AWS and AZURE.
In conclusion, what you're looking for is someone who can jump right into the project without delay, use their time resourcefully using a time tracker tool and produce quality work. I'm not just available "now," but I’m also passionate about taking on challenges head-on and delivering beyond expectations. Don't hesitate to give your project the advantage of my extensive skill set and experience! Encouraged by our potential collaboration, let's get started straight away - together we'll iron out those bugs fast!