What topics are tested in Flipkart SDE-1 interviews?

Flipkart SDE-1 interviews test: OOP, SOLID Principles, Design Patterns, Code Quality, Trees, Graphs, Sliding Window, Strings.

Does Flipkart SDE-1 have a system design round?

No, Flipkart SDE-1 does not include a system design round. The focus is on DSA and coding.

Flipkart

Q: How many rounds are there in Flipkart SDE-1 interviews?

Flipkart SDE-1 typically has 4 rounds. Flipkart SDE-1 interviews open with a 90-minute machine coding round followed by a separate 30-minute code review call — an unusual two-stage format. You write working, demo-able code for problems like parking lot or Splitwise, then defend your design live to a second evaluator. Two DSA rounds follow (trees, graphs, DP), and a hiring manager close. No system design at this level. Progress to the next round does not depend on clearing the previous one — Flipkart evaluates holistically across all rounds.

E-commerce · Bengaluru, India

Flipkart is India's largest e-commerce marketplace, processing millions of orders daily across fashion, electronics, and grocery.

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Rounds: 4 rounds
Focus: Machine Coding + DSA
System Design: No
Timeline: 2–3 weeks to offer

Role:

Rounds 1–2 are fully visible · Round 3+ unlocked with a free account

Machine Coding Round

Round 1 of 4LLD / OOD

90 min

OOPSOLID PrinciplesDesign PatternsCode Quality

Flipkart's most distinctive round — 90 minutes to build a working, runnable system, followed by a separate 30-minute code review call with a second evaluator who reads your code cold. The code review is a live oral defence: they will ask why you chose a particular class structure, what breaks if a new requirement is added, and whether your exception handling is production-grade. A partially working solution with clean OOP design consistently beats complete-but-spaghetti code. This ordering — machine coding before DSA — is unusual among Indian product companies and signals how seriously Flipkart weights design quality.

Medium

What to expect

e.g., 'Design a Parking Lot system' — ParkingLot, ParkingFloor, ParkingSpot, Vehicle hierarchy with a pluggable fee Strategy; evaluator will ask 'add motorbike support without touching ParkingSpot'
e.g., 'Build a Splitwise clone' — Group, Expense, Settlement with equal/percentage/exact split modes; expect 'now add a debt-simplification algorithm'
e.g., 'Design Snake & Ladder game engine' — Board, Dice, Player, GameEngine with configurable snakes/ladders and pluggable dice strategy
Code review trap: evaluator will ask you to extend a core class — candidates who hardcoded business rules inside constructors fail here even if the code ran correctly
You must demo a runnable CLI — printing output to stdout counts; no GUI required, but a crash during demo is an immediate flag

Practice on KnowEase.AI

LLD Practice →

Tip: Spend the first 10–15 minutes sketching classes on paper or in comments — Flipkart's code review call rewards candidates who can explain design intent, not just working output. The second evaluator has not seen your problem statement; they read your code cold. Variable names like 'x' and 'temp' will cost you.

Coding Round 1

Round 2 of 4DSA / Coding

60 min

TreesGraphsSliding WindowStringsBFS/DFS

1–2 DSA problems on trees, strings, or arrays. Flipkart SDE-1 interviewers push for optimization — they expect you to start with brute force, get it working, then improve. 'Length of maximum substring without repeating characters' and graph-based equation validation (if a/c=10, can you determine r/a?) are the kind of problems that appear. Write test cases yourself without being asked — it signals production awareness, which Flipkart explicitly evaluates.

Medium

What to expect

e.g., 'Length of maximum substring without repeating characters' — sliding window, O(n); be ready to handle Unicode, not just ASCII
e.g., 'Division equation validation' — build a weighted graph from known ratios, BFS/DFS to check if a query path exists; many candidates get the graph construction wrong
e.g., 'Find distance between two nodes in a Binary Tree' — LCA + depth calculation; follow-up: 'what if it's an N-ary tree?'
Failure mode: jumping straight to the optimal solution without explaining the brute force — Flipkart interviewers want to see your thinking, not just the answer
Write at least 3 test cases unprompted: null input, single-element, edge boundary — candidates who skip this are flagged even if the code is correct

Practice on KnowEase.AI

DSA Practice — Trees BFS →DSA Practice — Trees DFS →

Coding Round 2

Round 3 of 4DSA / Coding

60 min

1D DP2D DPTree HashingRecursion to Iteration

One harder problem — DP or advanced tree/graph. Flipkart SDE-1 interviewers are known for asking you to optimize a working brute-force before accepting the solution. 'Partition Equal Subset Sum' (1D DP), 'Unique Paths II' with obstacle grid, and tree problems like 'identify common subtrees' (requiring optimization from O(n²) to O(n) via hashing) have all appeared in 2023-2024 SDE-1 interviews. The interviewer specifically checks if you can go from recursive → memoization → bottom-up without prompting.

What to expect

e.g., 'Partition Equal Subset Sum' — 1D DP, space-optimized; follow-up: 'what if each element can be used k times?'
e.g., 'Unique Paths II with obstacles' — 2D DP; interviewer will ask about the obstacle-in-corner edge case
e.g., 'Identify common subtrees in a Binary Tree' — brute force O(n²) expected first, then optimize to O(n) using subtree serialization + HashMap
Follow-up: 'How would this perform on a tree with 10M nodes? What breaks?' — answer must address stack overflow and iterative DFS
Code review at the end: 'Where would this code fail in a production pipeline?' — candidates who say 'nowhere' are rejected

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Hiring Manager

Round 4 of 4Behavioral / HM

45 min

BehavioralCS FundamentalsCustomer ThinkingProblem Ownership

Behavioral and culture fit against Flipkart's five values: Audacity, Bias-for-Action, Customer First, Integrity, and Inclusion. At SDE-1, the bar is ownership and initiative — they want to see you've shipped something real and thought about its user impact. CS fundamentals (processes vs. threads, deadlock, SQL vs. NoSQL) still appear here alongside behavioral questions. Candidates who memorize the company's values but can't connect them to specific situations get screened out.

What to expect

Tell me about the hardest bug you debugged — walk through the investigation step by step, not just the fix
CS fundamentals: 'What's the difference between a process and a thread? Give an example where you'd choose one over the other' — abstract answers fail here
'Why Flipkart specifically — what about our e-commerce scale problems interests you?' — Flipkart interviewers can tell when you've substituted their name into a generic answer
Failure mode: giving textbook definitions for deadlock, CAP theorem, or SQL vs. NoSQL — they want a real example from your projects where you made that choice

Full details unlocked with a free account

Questions — coming soon.

Company Guide — coming soon.

About Flipkart SDE-1 Interviews

Flipkart SDE-1 interviews open with a 90-minute machine coding round followed by a separate 30-minute code review call — an unusual two-stage format. You write working, demo-able code for problems like parking lot or Splitwise, then defend your design live to a second evaluator. Two DSA rounds follow (trees, graphs, DP), and a hiring manager close. No system design at this level. Progress to the next round does not depend on clearing the previous one — Flipkart evaluates holistically across all rounds.

See interview loops for other companies:

Microsoft Amazon Uber Razorpay Walmart Coupang Rippling Rubrik Target

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