Salesforce Interview Questions
Practice 60 real Salesforce interview questions for 2026. Covers all top categories — Coding & Algorithms, System Design, Software Engineering Fundamentals, Behavioral & Leadership, and ML System Design — across Software Engineer, Machine Learning Engineer, and Backend Engineer roles. Real questions from actual interviews with detailed solutions. This collection is built for focused interview preparation: expect coding-heavy OA problems and live coding, a strong system-design component, and behavioral rounds tied to ownership and collaboration. For Software Engineers (44 questions) the recurring technical themes are clear: two online-assessment coding problems plus common data-structure and JavaScript implementation tasks, LFU/LRU cache design, interval/scheduling puzzles (maximize events attended), backend tradeoffs like DynamoDB vs MySQL and configurable monthly API rate limiting, scalable notification and short-video (TikTok-like) platform designs, Kubernetes pipeline orchestration, and behavioral prompts on ownership, conflict, and failure recovery. Machine Learning Engineer questions emphasize collaborative spreadsheet backends, ML and LLM fundamentals, and concurrent site crawling. Backend Engineer questions focus on low-level control and analytics systems such as Elevator Control System and Chat Analytics backends. Use timed OA practice, system-design sketches, and STAR-based stories for interview preparation.
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Delete One Character Type to Minimize Unique Segments
Problem Implement min_unique_segments_after_deletion(s) for a nonempty lowercase English string. Choose exactly one character value that appears in s ...
Maximal Square and Longest Increasing Subsequence
Problem Implement analyze(matrix, nums) and return [max_square_area, lis_length]. Part A: Maximal Square matrix is a rectangular grid containing only ...
Present and Defend Recent Research on AI Agents
Prepare and defend a research presentation about one recent project, then connect its lessons to AI-agent systems. Use your own work; do not invent re...
Design a Synchronized Watch Party System (LLD)
Design a Watch Party system that lets a host create a virtual room and have multiple users join — via a unique Room ID — to watch the same video conte...
Design a Venue Rental and Booking System (HLD)
Design a venue / facility rental system that lets organizers — schools, clubs, and event organizers — discover and rent out physical venues. Venues ar...
Discuss Transferable Experience for a New Mobile Product Team
Discuss Transferable Experience for a New Mobile Product Team In a manager conversation for a new native mobile product team, you are asked about your...
Design a coffee ordering system
System Design: Coffee Ordering System Design a system for a coffee shop (and later a chain of stores) that lets customers order drinks for pickup or i...
Solve Two OA Coding Problems
The online assessment included two coding problems: 1. In-place character run compression - You are given an array of characters. - Compress con...
Choose DynamoDB vs MySQL for a backend
This question evaluates a candidate's ability to reason about data modeling, access patterns, query complexity, consistency and transactional requirem...
Explain ML and LLM fundamentals
You are interviewing for an AI Engineer role. Explain the following concepts and how they affect real systems: 1. What is F1 score, and when is it mor...
Implement common data-structure and JS tasks
This multi-part prompt evaluates core competencies in data structures and algorithms (time-based key-value design, duplicate removal in sorted linked ...
Answer ownership, conflict, and failure recovery questions
You are in a 45-minute hiring manager (behavioral) interview. Prepare structured answers to: 1. Ownership: Describe a project where you showed the mos...
How do you perform a thorough code review?
You are given several Python backend files to review (treat this as an “OA in code-review format”). The code performs database operations such as SQL ...
Find a Valid Task Execution Order with Dependencies
You are building the task scheduler for a CI/build system. There are n build tasks labeled from 0 to n - 1. Some tasks cannot start until certain othe...
Build a concurrent site crawler
Implement a small crawler in Python for a single target website. Requirements: - Input: a start URL, a maximum crawl depth, and an output CSV path. - ...
Design a Concurrent Car Reservation Service
Design a Concurrent Car Reservation Service Prompt Design a car reservation service. A customer searches for an available car for a location and time ...
Describe a memorable bug and persuasion story
Behavioral Questions Q1: Most memorable bug Tell me about the most memorable/impactful bug you encountered in your work experience. - What was the use...
Design a Multi-Vendor Integration Platform
Design a Multi-Vendor Integration Platform Prompt Design a platform that connects a product to many third-party vendors such as email and team-messagi...
Design a scalable coffee ordering notification system
This question evaluates a candidate's ability to design scalable, real-time distributed systems with emphasis on order lifecycle management, reliable ...
Design an Elevator Control System
Design an object-oriented elevator control system for a building with multiple floors and multiple elevators. The system should support: - Hall reques...