The interview process included three technical interviews and one HR discussion. Overall, it went smoothly, with questions that were reasonable and not too difficult, allowing me to demonstrate my skills comfortably.

Design a Timer Manager / Scheduler. Design and implement a timer management system that allows clients to schedule tasks to run after a given delay. The system should support:

• Adding a new timer with a callback function and execution deadline.
• Executing callbacks when their deadlines are reached.
• Cancelling scheduled timers before they are executed.
• Efficiently handling a large number of timers.