I am from India(Non-EU). I have 4+ years of experience in Embedded System domain and Security Testing(Ethical Hacking). I would like to migrate to Ireland. As discussed with some people, it is mandatory to get job offer before applying for work permit. I need few details like below,
1) Can I get job if I am coming via tourist visa and then apply for work permit with visa sponsorship in Ireland?.
2) Is embedded system domain good at Ireland?
3) Is Security Testing good at Ireland?
4) Can I get job offer without travelling to Ireland by anyway like Linkedin network or interview via Skype possible?
It would be grateful if somebody help me. Thanks in Advance.

Regards,
Saravana