Is It Necessary to mention domain in resume?

It better to include your domain of experties. However, technology stacks, skills and experiences matter most for software developer position.

Yes, it is better to include the domain you have worked on, mention the technology you have learned and the skillsets you have. Based on which it will be easy for the organization to select the candidate. If you don't mention maybe there is a chance that they will not be interested in you.

I think it's important to mention a couple of words about the company you have worked in. Not only domain but also why the company you've worked with might be better than others. But at the end of the day if you're not applying to the position in some rare domain in 95% cases you'll be judged by technological competence

What is Domain in resume?

it always better to mention Domain in rseume