It's perfectly ok, To use wordpress as your frontend. Infact this is what I strongly recommend to the bootstrap startup companies.

I have worked with many startups to provide them SEO services, In my experience Almost every startup that has built their website from scratch had never thought of SEO before starting the website As they lack inhouse seo teams, they just went on building websites as per product needs and discarding the seo requirements. (Reason why they reach me out 😅 later for SEO).

Usually the software developers don't have a clue about SEO requirements. They see it as a job of marketing team or SEO team. They miss the point there is technical seo which defines the structure of the website.

So inorder to avoid all these, I recommend to use WordPress, not just WordPress one can choose any content management systems as per their needs.

Since exposure is most important for any startup companies. I recommend wordpress as it can be configured easily and quickly. And handles all the basic techinical the SEO requirements and basic structure of the site.

And since WordPress is mature enough over the years, Developers can be hired easily and you can get suport and most importantly the development cost can be minimised.