It is possible to work big company without global certificate?

Maybe depend on your dission.

Yes, it is possible.

If an employee is comprehensively competent in the profession, he/she can work at a major organisation without having a global-level certificate, provided the person concerned is genuinely willing to learn and fulfil all the major requirements of his/her job at the big company swiftly.

Yes, it is possible to work for a big company without any global certificates if you possess the skills and experience they are looking for.

Not bad , if candidate gets opportunity to work with any Global company not even having Global crteificate 

Yes, defineitely,. it all depends upon our talent

yes, it is possible to work big company

Oui avec une bonne experience.

Both are acceptable. Context is to earn 

Yes, if you know its chairman

Yes, if the Platform is same, and you have capability to Perform at any place in world.