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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Below is a screenshot of my portfolio site. I made a mockup in Adobe XD and then built it with React.js and Typescript. The code for my portfolio can be viewed on my Github Portfolio Repository.
For developers specifically, you will want to have some public projects that you have worked on to showcase what you can do. If hiring managers are unable to see the code you write, it is that much harder for them to want to hire you. You should include a few projects that aren't just copied from a tutorial. These should be projects unique to you, and based on something that you find interesting. You may also want to spend some time creating a unique and valuable readme for your profile, this can be done by naming a repository the same as your GitHub username and creating a file named README.md. Shown below is an image of my readme, it is nothing too special but it does its job.