Overview
Salesforce interviews for SWE roles emphasize both algorithmic skill and system‐design mindset. Below are high-frequency questions and strategies for OA, VO, and onsite rounds.
Interview Rounds
- OA: 2 algorithm problems (HackerRank, Medium level)
- VO: Coding plus system design discussion
- Onsite: 4–5 rounds covering coding, design, and cultural fit
Key Questions & Approaches
1. LRU Cache
Design an LRUCache with get and put in O(1) time.
class LRUCache:
def __init__(self, capacity: int):
pass
def get(self, key: int) -> int:
pass
def put(self, key: int, value: int) -> None:
pass
Key: Hash map + doubly linked list; discuss eviction policy.
2. Multi-Tenant CRM Permission System
Design data access for Salesforce’s multi-tenant architecture:
- Client isolation
- Role-based or attribute-based permissions
- Hierarchical inheritance
Focus: Data model, RBAC/ABAC, metadata-driven design.
3. Minimum Time Difference
Given time points (“HH:MM”), find the minimum difference in minutes.
Example: Input ["23:59","00:00"] → Output 1.
Approach: Convert to minutes, sort, handle wrap-around.
Candidate Insights
- USC Master’s Graduate: Emphasized field-level security and RBAC in VO, which impressed interviewers.
- Amazon Engineer: Used STAR method in behavioral rounds—focused on lessons learned.
- Programhelp Student: 1:1 coaching on permission models helped land an offer in two weeks.
Next Steps with Programhelp
Programhelp offers end-to-end support—OA coding assistance, VO technical guidance, and system design coaching—led by alumni from top universities. Learn more and get started.
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