Salesforce
Salesforce

Java Backend Developer

Design a Notification Service (Klaviyo-like)

Medium
Round 2 (LLD — Low-Level Design)system_designCandidate Selected

Design and implement a real-world Notification Service similar to Klaviyo, focusing on clean class design and object-oriented principles.

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Salesforce Java Backend Developer Interview Experience

The Salesforce interview process was comprehensive and technically rigorous, consisting of four distinct rounds covering DSA, Low-Level Design, High-Level Design, and a Managerial interview. The coding round featured advanced graph algorithms, heap operations, and dynamic programming challenges, while the design rounds tested deep knowledge of scalable distributed systems and object-oriented patterns. Overall, the interview had a medium-to-hard difficulty level, demanding strong problem-solving capabilities, practical architectural experience, and solid communication skills.

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