What language was used for the backend and frontend? I'm trying to make a web interface for a small project but I think I love Java too much to learn JS or HTML...
What a pristine example of next level stockholms syndrom! With that attitude it might benefit you more than anything. Theres nothing that gets me to not hire someone than the person saying “Im a {language} developer”
Might be the opposite, for example there are some languages I consider a waste of time and refuse to learn. Mainly languages too close to my current skillset, as I feel there are other languages that can teach me more with the same effort, or languages I consider downright badly-designed.