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Important Core Subject Concepts for Campus Placements

Apart from coding and aptitude, most companies evaluate your understanding of Computer Science fundamentals during campus placements. Interviewers usually expect candidates to explain concepts clearly, compare different approaches, and apply theoretical knowledge to practical scenarios. Below are the most important subjects and topics you should prepare. 1. Operating Systems (OS) Operating Systems is one of the most frequently asked subjects in interviews. P

~ Ajit Goyal

⏱️9 hr ago

Latency in System Design: The Complete Beginner to Advanced Guide

Building a scalable application is not just about supporting millions of users. It is also about delivering a fast and responsive user experience while processing a large number of requests efficiently. Two of the most important performance metrics used to evaluate any software system are Latency and Throughput . Whether you are designing a REST API, a distributed database, a microservice architecture or a real-time gaming platform, understanding these two concepts i

~ Amit Goyal

⏱️10 hr ago

Adobe MTS-2 Interview Experience | DSA, System Design, DevOps & Hiring Manager Round

I recently interviewed for the Member of Technical Staff 2 (MTS-2) role at Adobe . The hiring process took around 3–4 weeks and consisted of three technical rounds . The interviews covered a broad range of topics, including data structures and algorithms, system design, operating systems, databases, object-oriented programming, DevOps and project discussions. Unlike interviews that focus solely on coding, Adobe evaluated both problem-solving ability and conceptu

~ Gagan Bansal

⏱️13 hr ago

ServiceNow Associate Systems Engineer Interview Experience | DSA, Computer Networks & Operating Systems

Field Details Company ServiceNow Role Associate Systems Engineer Experience Level Student / Fresher Interview Mode Remote Interview Rounds 3 Difficulty Level Medium Result Selected Interview Timeline 1 - 2 Weeks Interview Process The recruitment process consisted of three interview rounds that assessed core computer science fundamentals, data structures and algorithms, project experience and behavioral skills. Unlike interviews that focus exclusively on cod

~ Raj Mehta

⏱️14 hr ago

Swiggy SDE (Backend Engineer) Interview Experience | Java, System Design, Automation Frameworks & SQL

Field Details Company Swiggy Role Software Development Engineer (Backend Engineer) Interview Mode Remote Interview Rounds 5 Difficulty Level Hard Result Selected Interview Timeline 2–3 Weeks Interview Process The recruitment process consisted of five technical and behavioral rounds. Although the role was for a Backend Engineer, the interview focused heavily on Java fundamentals, automation engineering, system design, SQL optimization and designing scalable

~ Ajeet Pawar

⏱️14 hr ago

Visa Software Engineer 1 (SDE-1) Interview Experience | CodeSignal OA + Graph-Based Technical Rounds

I recently interviewed for the Software Engineer 1 (SDE-1) position at Visa . The entire hiring process took around 2–3 weeks and consisted of four rounds , including an Online Assessment, two technical interviews focused on graph algorithms and a hiring manager discussion. What stood out about Visa's interview process was that the technical interviews emphasized problem modeling and graph reasoning rather than asking standard LeetCode questions. Interviewers were

~ Aniket Joshi

⏱️14 July 2026

Horizontal Scaling (Scale Out) in System Design: Complete Guide

Horizontal Scaling, also known as Scale Out , is the process of increasing a system's capacity by adding more servers or application instances instead of upgrading a single machine. Incoming requests are distributed across multiple servers, allowing them to work together to process a larger number of requests simultaneously. Unlike vertical scaling, which is limited by the hardware capacity of a single server, horizontal scaling enables applications to continue gro

~ lizzy grant

⏱️10 July 2026

Vertical Scaling (Scale Up) in System Design : Everything You Need to Know

Vertical Scaling, also known as Scale Up , is the process of increasing the computing capacity of an existing server by upgrading its hardware resources, such as CPU, RAM, storage or network bandwidth. Instead of adding more servers to the infrastructure, the application continues to run on the same machine, but that machine becomes significantly more powerful. Vertical scaling is usually the first scalability strategy adopted by startups and small to medium-sized app

~ lizzy grant

⏱️10 July 2026

Scalability in System Design: The Complete Beginner to Advanced Guide

Modern software applications are built to grow. A startup may launch with only a few hundred users, but as its user base expands, the system must be capable of serving millions of users, processing billions of requests and managing petabytes of data. If the underlying architecture cannot scale efficiently, users may encounter slow response times, frequent outages or even complete service failures. This is why scalability is one of the most fundamental concepts in system

~ lizzy grant

⏱️10 July 2026

Ways to Achieve Scalability

Modern software applications rarely serve the same number of users throughout their lifetime. A startup may begin with a few hundred users, but as its popularity grows, it may need to support millions of users, billions of requests and petabytes of data. If the system cannot handle this growth efficiently, users may experience slow response times, downtime or even complete service failures. This is why scalability is considered one of the most important principles in sys

~ Rahul Verma

⏱️10 July 2026

Design Patterns Interview Questions with Answers Part 2

If you're new to design patterns or haven't gone through the basics yet, we highly recommend reading Part 1: Design Patterns Interview Questions and Answers first. It covers the core concepts, SOLID principles and the most commonly asked interview questions that provide the foundation for this advanced section. Once you're comfortable with the fundamentals, continue with Part 2 to explore more advanced interview scenarios, real-world applications, pattern compari

~ Nitin Kohli

⏱️08 July 2026

Design Patterns Interview Questions with Answers

Design patterns are reusable, well-tested solutions to commonly occurring software design problems. Instead of reinventing the solution every time, developers can apply established Design Patterns to build applications that are easier to understand, maintain, extend and scaleDesign patterns are not complete implementations or frameworks . They are design blueprints that describe how classes and objects should interact to solve recurring design challenges in s

~ Nitin Kohli

⏱️08 July 2026

Swiggy Data Scientist 1 Interview Experience | Python, SQL, Machine Learning & Product Design | Selected

Company: Swiggy Role: Data Scientist 1 (Instamart) Experience Level: Early Career (Fresher) Interview Mode: Remote Interview Rounds: 4 Difficulty Level: Hard Result: Selected Interview Timeline: 2–3 Weeks The recruitment process consisted of four rounds, each designed to evaluate a different aspect of a data scientist's skill set. Unlike a typical software engineering interview where coding dominates every round, Swiggy's process balanced programming, statis

~ Himanshu Goyal

⏱️07 July 2026

Infosys Specialist Programmer Interview Experience (2 Rounds) | OA + Technical Interview | Selected

Company: Infosys Role: Specialist Programmer Interview Mode: Online Assessment + On-site Interview Difficulty Level: Medium to Hard Result: Selected Interview Timeline: Within 1 Week The recruitment process consisted of two rounds : Online Assessment (Coding Round) Technical Interview Overall, the interview process was well structured and primarily focused on Data Structures & Algorithms (DSA), Object-Oriented Programming (OOP), problem-solving skil

~ Raj Mehta

⏱️06 July 2026

ServiceNow Software Engineer Intern Interview Experience (2 Rounds)

Company: ServiceNow Role: Software Engineer Intern Experience Level: Fresher Interview Mode: Remote Difficulty Level: Medium Interview Timeline: 1–2 Weeks Result: Rejected Total Rounds: 2 Round 1 (Online Assessment) Duration: 60 Minutes Difficulty: Medium The first round consisted of three coding problems. The first problem was based on Arrays and was relatively straightforward. The second problem focused on Trees , covering standard tree concepts and traversa

~ Kuldeep Rajput

⏱️06 July 2026

If You Join 10 Tables in an SQL Query, How Would You Optimize Performance?

Joining 10 tables in a single SQL query is a classic this might work… until it doesn’t situation. It can be perfectly valid in a well-designed schema, but it can also turn into a performance bottleneck if the optimizer is forced into large intermediate result sets, missing indexes or inefficient join ordering. Start with the Execution Plan, Not the Query The first and most important step is to inspect the query execution plan using tools like EXPLAIN or EXPLAIN ANALYZE . This s

~ Elias Sterling

⏱️24 June 2026

Stop Using useEffect for Data Fetching: The Modern Way React Pros Build Faster Apps

For years, React developers have relied on useEffect to fetch data inside components. It became a default pattern, almost a habit, rather than a design choice. But modern React architecture is shifting away from this approach. With tools like React Router loaders, data fetching is no longer something that happens inside UI components. it happens before the UI renders. This shift is not just syntactic improvement. It changes how applications are structured, how data flow

~ Bishal Baira

⏱️24 June 2026

Postman Software Development Engineer - II (Full Stack) Interview Experience

Company: Postman Role: Software Development Engineer - II (Full Stack) Interview Mode: Remote Difficulty Level: Hard Application Method: Job Portal Interview Timeline: 2–3 Weeks Total Rounds: 4 Result: Rejected I recently interviewed with Postman for a Software Development Engineer - II (Full Stack) position. The entire interview process lasted around two to three weeks and consisted of four technical rounds, each focusing on a different aspect of full-stack softw

~ Ekta chaudhary

⏱️18 June 2026

PolicyBazaar Software Development Engineer (SDE) Interview Experience | DSA, Core CS & System Design

Company: PolicyBazaar Role: Software Development Engineer (SDE) Interview Mode: Remote Difficulty Level: Medium Total Rounds: 3 Interview Timeline: 2–3 Weeks Application Method: Email Result: Rejected Recently, I interviewed with PolicyBazaar for a Software Development Engineer (SDE) role. The overall interview process was well-structured and primarily focused on evaluating problem-solving skills, computer science fundamentals and system design knowled

~ Neeta Chakravorty

⏱️17 June 2026

Blinkit (Eternal) SDE-1 Interview Experience (June 2026) – Offer Received

Company: Blinkit (Eternal) Role: Software Development Engineer I (SDE-1) Location: Gurgaon Experience: 1 Year Education: B.Tech from Tier-1 College Interview Mode: Remote Interview Rounds: 3 Result: Selected Compensation Offered: 30 LPA (25 LPA Fixed + 5 LPA Joining Bonus) At the time of applying, I had around one year of experience working at a large multinational company. Although the company offered stability, I felt that the learning opportunities and technical

~ Sanuj Tiwari

⏱️15 June 2026

DSA Patterns for Coding Interviews: Complete LeetCode Roadmap (Beginner to Advanced)

Preparing for coding interviews can feel overwhelming because there are thousands of problems available on LeetCode. Many candidates spend months solving random questions but still struggle when faced with a new problem during an interview. The reason is simple: successful interview preparation is not about memorizing solutions. it is about recognizing patterns. Most coding interview questions asked by companies such as Google, Amazon, Meta, Microsoft, Uber, Air

~ Bishal Baira

⏱️13 June 2026

JPMorgan SDE-2 Interview Experience - 3 Rounds | Java, Code Review & System Design

Field Details Company JPMorgan Chase Role Software Development Engineer II (SDE-2) Experience Level Experienced Professional Interview Mode Remote Interview Rounds 3 Coding Problems Asked 0 Direct DSA Questions Difficulty Level Medium Interview Timeline 2–3 Weeks Final Result Rejected Unlike many product-company interviews that focus heavily on Data Structures and Algorithms, this interview process emphasized practical software engineering skills. The dis

~ Devansh Patel

⏱️13 June 2026

Qualcomm C++ Engineer Interview Experience

Company: Qualcomm Role: Engineer (C++) Interview Mode: Hybrid (Remote + On-site) Total Rounds: 3 Difficulty Level: Hard Interview Timeline: 2–3 Weeks Result: Rejected Coding Problems: 2 (core + follow-up variations) I recently interviewed with Qualcomm for a C++ Engineer role. The overall process was challenging and well-structured, with a strong focus on data structures, operating systems and C++ fundamentals along with behavioral depth in later rounds. Unlike t

~ Aniket Joshi

⏱️09 June 2026

Spinny SDE-1 Interview Experience (Selected)

Company: Spinny Role: SDE-1 / Associate Software Engineer Interview Mode: Remote Total Rounds: 4 Difficulty Level: Medium Timeline: 1–2 Weeks Result: Selected Recently, I interviewed with Spinny for an SDE-1 role. The process consisted of four rounds covering coding, low-level design, project discussions, Java fundamentals and SQL. The overall experience was structured and focused on evaluating both problem-solving ability and practical software engineering s

~ Kunal Dixit

⏱️09 June 2026

Meta(Facebook) Software Engineer Round 1 Interview Experience

Company: Meta Role: Software Engineer Interview Mode: Remote Interview Duration: 60 Minutes Coding Problems: 2 Difficulty Level: Medium I recently interviewed for a Software Engineer position at Meta(Facebook). The process consisted of a single technical interview round conducted remotely. The interview lasted approximately one hour and focused entirely on coding and problem-solving. The overall experience was professional and well-structured. The intervie

~ Shashwat Tiwari

⏱️09 June 2026

Maximum Productivity After Employee Rearrangement | Dynamic Programming Assignment Problem

You are given an array A of length N, where: A[i] represents the productivity score of the employee initially sitting at seat i (1-indexed). Before the workday begins, the manager can perform exactly one global rearrangement of all employees. Every employee must be assigned to a unique seat. If an employee originally sitting at position x is moved to position y, that employee contributes: A [ x ] × ∣x − y∣ to the team's total productivity score. Your task is to determine the maxi

~ HackFury

⏱️08 June 2026

The Ultimate Guide to 16 Coding Interview Patterns Every Software Engineer Must Master

If you ask experienced software engineers how they solve coding interview problems so quickly and consistently, most of them will give a surprisingly simple answer: They do not memorize hundreds of individual solutions. Instead, they learn to recognize patterns. One of the biggest misconceptions among interview candidates is that success comes from solving thousands of random problems and remembering every solution. In reality, top performers focus on understandi

~ Raj Verma

⏱️06 June 2026

Kotak Mahindra Bank SDE-1 Round 3 Interview Experience – LLD Round (Notification Service Design)

One of the most interesting rounds in my Kotak interview process was the Low-Level Design round. Unlike traditional DSA interviews, this round focused on designing a real-world system and evaluating how I structure classes, APIs, business logic and extensibility. The interviewer asked me to design and implement a Notification Service that could send notifications through multiple channels such as Email, WhatsApp and SMS. At first glance the problem looked simple, bu

~ Kunal Dixit

⏱️04 June 2026

Rippling SDE-2 Interview Experience (4+ Years Experience) | Offer Received | Coding, LLD & System Design

Company: Rippling Role: SDE-2 / Software Engineer Experience: 4+ Years Interview Mode: Remote Rounds: 5 Result: Offer Received Over the years, I have gone through interviews at several product companies and one thing I have noticed is that many interview processes follow a predictable pattern: a coding round, a system design round and a behavioral discussion. My interview experience with Rippling felt different. The questions were not designed to test whether I had mem

~ Shashwat Tiwari

⏱️03 June 2026

Amazon SDE Intern Interview Experience~ 2 Rounds, 4 Coding Problems | Selected

Interview Overview Role: SDE Intern Company: Amazon Experience Level: Fresher Interview Date: October 2025 Result: Selected Rounds: 2 Interview Rounds + Online Assessment Total Coding Problems: 4 Mode: Campus Placement Interview Preparation Journey My preparation journey was focused less on shortcuts and more on building strong fundamentals consistently over time. Instead of chasing only interview-specific tricks, I spent most of my preparation understanding

~ Raj Mehta

⏱️29 May 2026