Salesforce Interview Questions
Practice 50 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.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
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...
Remove duplicates and find constrained longest subsequence
You are given two independent coding tasks. Task 1: Remove duplicates from a linked list Given the head of a singly linked list (not necessarily sorte...
Design a TikTok-like short video platform
Design a TikTok-like short-video product. Core user stories 1. Users upload short videos (e.g., 10–60 seconds). 2. Users watch an infinite For You fee...
Solve sliding window, heap, DP, in-place tasks
You are given several LeetCode-style coding tasks. Implement each with the stated time/space goals and handle edge cases. 1) Sliding Window: longest s...
Design a configurable monthly API rate limiter
Design a rate-limiting system for an expensive API. Requirements - Each user (or API key) has a monthly quota (e.g., 10,000 calls/month). - Users can ...
Minimum Sum of Weekly Maximum Costs
Minimum Sum of Weekly Maximum Costs You are scheduling a marketing campaign rollout. You are given an integer array costs, where costs[i] is the cost ...
Solve array duplicate flags and binary swaps
Problem 1: Flag duplicates on the left and right You are given an integer array nums of length n. For each index i, determine: 1. Left-duplicate: whet...
Flatten a nested JSON object
Problem You are given a JSON-like value representing an object that may contain: - Objects / dictionaries (string keys) - Arrays / lists - Primitive v...
Design a scalable coffee ordering notification system
Design an online coffee ordering system. Core flow - Customers browse menus for nearby coffee stores, place orders, and pay. - Coffee stores receive o...
Minimize operations to reduce integer to zero
You are given a non-negative integer n. In one operation: - If n is even, you may replace n with n / 2. - If n is odd, you may replace n with either n...
Find longest subsequence of x that is a substring of y
Given two strings x and y, compute the maximum length of a string s such that: - s is a subsequence of x (can delete zero or more characters from x wi...
Design a pipeline orchestration system on Kubernetes
Design a pipeline/workflow orchestration system (similar to a DAG-based scheduler) that runs workloads on Kubernetes. Functional requirements - Users ...
Choose DynamoDB vs MySQL for a backend
In a backend system, you must choose a primary database for a core service. Explain when you would choose a key-value/NoSQL store (e.g., DynamoDB-like...
Design an async job system and cache layer
Design two systems. You can assume a large-scale production environment; focus on clear APIs, data models, scaling, reliability, and trade-offs. Part ...
Implement common data-structure and JS tasks
You are given several independent coding tasks that appeared across an OA and frontend-focused interviews. Implement each as specified. 1) Time-based ...
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 ...
Design an analytics dashboard for an AI chat app
Scenario Design an analytics dashboard for a ChatGPT-like AI chat product. The dashboard is used by Product/Engineering/Support to monitor product hea...
Design a 911 emergency calling service
System Design Prompt Design a 911 emergency calling service (or emergency call routing platform) that allows users to place emergency calls from mobil...
Design a Chat Analytics Backend
Design the backend of an internal analytics system for a conversational AI product similar to ChatGPT. The goal is to power an analytical metrics dash...
Remove duplicates from a singly linked list
You are given the head of a singly linked list of integers. Modify the list in place so that it contains only the first occurrence of each value (i.e....