bootstrap existing job portal template customization

the frontend uses bootstrap theme template, and it's already has almost all the features, you just need custimize it with some additional features like other websites(I will send you), and backend you can use wordpress or other existing framework, you must be expert with
html
javascript
php
typescript
serverless
PM me with your most efficient skill set, I want it to be most cost efficient, with low budget, since this will only customize the template.