Being a web developer with strong expertise in CSS, HTML, HTML5 and JavaScript, I am confident I can complete this project to your utmost satisfaction. My development skills have been utilized for diverse projects which include extensive CSS and JS work much like what your task demands. For instance, I've integrated responsive designs with smooth hover effects, click toggles, sliding menus and many more functionalities, all within stringent time frames.
I'm intimately familiar with the specific features you've mentioned: a burger menu for mobile view, flex box grid implementation for aligning page details and the intricate JS scaling effect on hovering images. Moreover, I specialize in implementing pleasant hover animations such as fade-ins, which can significantly enhance the user experience on any website.
My past work has involved rigorous project management to deliver within tight deadlines. I understand the urgency of your project's timeline and have created a well-defined workflow to ensure that every feature is implemented effectively in the stipulated 8 hours. Rest assured that employing me will allow you to meet your requirements with skill and efficiency at the forefront. Let's connect and make your vision a reality!