With my solid grasp of JavaScript and considerable experience in backend development, I am confident in tackling the task of modifying NextCloud to suit your requirements. My knowledge extends to HTML and MySQL which will be crucial in this project. Having worked extensively with several backend frameworks such as Laravel, NodeJS/ExpressJs, NestJs/KnexJs, I am well-versed in customizing software applications to meet specific needs. Rest assured, providing customized settings for each user based on their permission levels can be easily achieved.
In terms of manual control over user preferences as mentioned in your project description, my expertise can streamline the process and allow easy enablement or disablement of different settings on a per-user basis without compromising system fluidity. Aside from this, my proficiency extends into many other areas such as Graphic Design, eCommerce development among others; these broad skills are advantageous when executing change requests on major platforms like NextCloud.
Delivering quality work within a reasonable time frame is a priority for me. Your satisfaction is guaranteed, and if by some improbable chance you're not satisfied, I offer 100% moneyback guarantee. Why look any further? Let's bring your vision to life with personalized solutions that uphold security and maintain usability by choosing me for the job. I'm eager to get started.