Ask HN: What specializations can you get a job in with entry level experience?

Examples of specializations:

- Management

- Web

- Mobile

- Security

- Systems

- Embedded

- ML / AI

Let's say "entry level experience" = a degree in Computer Science, just to have a relative standard. Many first jobs for devs are in web/mobile, but what about others?

Further, if you have experience in the specialization(s) you're mentioning, what qualified you for that job (number of years in dev, specific qualifications, etc.)?