Goldman Sachs | Analyst | 1.5 YOE | Hyd/Blr | Feb 2025

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goldman sachs
analysthyderabad/bangalore1.5 yearsOffer
March 1, 202528 reads

Summary

I interviewed for an Analyst position at Goldman Sachs, navigating through several technical and behavioral rounds, including online assessments, coding challenges, system design, and a hiring manager discussion, ultimately receiving an offer.

Full Experience

I have 1.5 years of experience as a backend Java developer at an Indian fintech company and applied for this role through a referral.

Round 1 - Online Assessment

I don't recall the exact questions, but there was one easy and one medium-level problem which I successfully solved. Shortly after, the recruiter contacted me to gather information about my current CTC and notice period, indicating my profile was being forwarded. A few days later, I received an email to schedule a Coderpad round.

Round 2 - Coderpad

I was presented with two coding problems: String Compression and Trapping Rain Water. For the first problem, I explained my approach and immediately started implementing it. For the second, I discussed both the extra space and constant space approaches before implementing the latter. I executed my code against several test cases, including additional ones provided by the interviewer, which required me to handle some corner cases for the first problem. The very next day, the recruiter called to schedule a Superday.

Superday

My Superday consisted of three 1-hour interviews, each with a 30-minute break.

Round 3 - Data Structures

Two interviewers were present. Each asked one question: Group Anagrams and Count Good Nodes in Binary Tree. For the first problem, the expectation was to provide an optimized working solution that passed test cases. For the second, we performed a dry run with some test cases. The first interviewer also interspersed questions about APIs and databases, such as how to fetch 1GB of data using REST APIs.

Round 4 - Software Engineering Practices

This round involved questions on Java Interfaces and the Spring framework. I also spent about 45 minutes on a Low-Level Design (LLD) for a Payment Gateway Service.

Round 5 - Software Design and Architecture

I was asked to design an LRU Cache and convert a number like 1234 into words (e.g., 'one thousand two hundred and thirty-four').

Round 6 - Technical Round

This round covered Java concepts like the difference between String == and equals(), String immutability, and how to make a class immutable. There was also a SQL query problem which I solved using GROUP BY and HAVING clauses. Finally, I had to design the backend of an employee details form, explaining Spring Boot features (controller, service, repository classes) and the APIs.

Round 7 - Hiring Manager

This was a quick 20-25 minute call where the HM asked about my reasons for leaving my current company after 1.5 years and my interest in Goldman Sachs. He described the team and tech stack. The call concluded positively, with him expressing his desire to have me join the team as soon as possible. The HR verbally confirmed my selection, and I am currently awaiting the official offer letter.

Interview Questions (14)

Q1
String Compression
Data Structures & AlgorithmsMedium

Given an array of characters chars, compress it using the following algorithm: Begin with an empty string s. For each group of repeating characters in chars, append the character followed by the count of its repetitions to s. If the count is 1, don't append it. After compressing, chars should be modified in-place to contain the first k characters of s, where k is the new length. Return k.

Q2
Trapping Rain Water
Data Structures & AlgorithmsHard

Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap after raining.

Q3
Group Anagrams
Data Structures & AlgorithmsMedium

Given an array of strings strs, group the anagrams together. You can return the answer in any order. An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once.

Q4
Count Good Nodes in Binary Tree
Data Structures & AlgorithmsMedium

Given a binary tree root, a node X in the tree is 'good' if in the path from the root to X (inclusive), there are no nodes with a value greater than X. Return the number of 'good' nodes in the binary tree.

Q5
Fetch Large Data via REST APIs
System Design

Explain how to efficiently fetch a large dataset (e.g., 1GB) using REST APIs, considering potential issues like memory, network latency, and response times.

Q6
Design a Payment Gateway Service (LLD)
System Design

Provide a Low-Level Design (LLD) for a Payment Gateway Service, detailing components, APIs, database schema, and interactions.

Q7
Design LRU Cache
Data Structures & AlgorithmsHard

Design and implement a Least Recently Used (LRU) cache. The cache should support get and put operations with O(1) time complexity.

Q8
Convert Number to Words
Data Structures & AlgorithmsMedium

Implement a function that converts a given integer (e.g., 1234) into its English word representation (e.g., 'one thousand two hundred and thirty-four').

Q9
String == vs. equals() in Java
OtherEasy

Explain the difference between == operator and the equals() method when comparing String objects in Java, including their use cases and underlying mechanisms.

Q10
Explain String Immutability in Java
OtherEasy

Explain what String immutability means in Java, why Strings are designed to be immutable, and its implications.

Q11
How to Make a Class Immutable in Java
OtherMedium

Detail the steps and best practices required to create an immutable class in Java, including final fields, no setter methods, deep copies, etc.

Q12
Design Employee Details Form Backend (Spring Boot)
System DesignMedium

Design the backend for an employee details form using Spring Boot. This involves implementing controller, service, and repository classes, and explaining the REST APIs for CRUD operations.

Q13
Why Leaving Current Company?
Behavioral

Explain your reasons for seeking a new opportunity and leaving your current company after 1.5 years.

Q14
Why Goldman Sachs?
Behavioral

Discuss your motivations and interest in joining Goldman Sachs specifically.

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