Looking for work while you are still employed
Mostly a question of discretion and logistics, with a few points where carelessness has real consequences.
Use personal equipment, a personal email address and personal time. Employer systems are generally monitored lawfully, and a search conducted on them is both discoverable and, in many workplaces, a policy breach in itself.
On professional networks, settings exist to limit who sees profile activity, and turning off update notifications before revising a profile avoids announcing the search. Recruiters can still find the profile; colleagues are simply not notified.
Interviews scheduled early, late or during leave avoid an unexplained pattern of absence. Asking an employer to keep an application confidential is normal and generally respected, but it has to be requested explicitly.
References are the point where a search becomes visible. Offering former colleagues rather than a current manager is standard, and most employers understand why a current manager is only approached after an offer.
Still have a question?
Describe what you are trying to work out and a member of the team will answer, or direct you to the office that makes the decision.