It is possible to get airline pilot jobs relatively quickly but this depends on whether you have the right qualifications flight experience and type ratings that airlines look for and it usually takes some time to build these up. According to Pilot CET if you hold a Commercial Pilot License (CPL) you are eligible for entry-level roles such as pilot trainee co pilot (also known as first officer) charter pilot cargo pilot or flight instructor provided you complete the required type ratings or additional ratings like instructor or instrument ratings. For example a CPL holder who has accumulated around 200 hours can begin as a pilot trainee and with a type rating for a specific aircraft like the A320 or B737 they can work as a co pilot under supervision. So if you already have a CPL the appropriate ratings, and enough flight hours, you may be able to secure entry into the aviation industry fairly promptly.
However if you’ve only achieved a Student Pilot License (SPL) or a Private Pilot License (PPL) these do not qualify you for paid aviation jobs and you’ll need to obtain at least a CPL to move forward. Getting airline jobs immediately also depends on market demand and how soon you can obtain necessary ratings. While it's certainly achievable to begin airline related roles early in your career, it’s not always instant and depends on your preparation, available positions, and your readiness to complete all required certifications and hours.
In short while getting airline pilot jobs quickly is possible when you have all the essential qualifications (CPL type ratings required hours) it typically involves diligent training and readiness rather than being immediate.