Swiggy Java Interview Questions 2026
Published July 22, 2026 · Updated July 22, 2026
5 real Java interview questions asked at Swiggy. Upvoted by engineers who cleared the loop. Covers Technical rounds.
5 questions
124 engineers asked
236 upvotes
Company: Swiggy
Technology: Java
All Java Questions Asked at Swiggy
Swiggy
Medium
Technical round
JavaPython
Given a list of delivery time windows for N restaurants, find the maximum number of restaurants whose windows overlap at any point in time.
Explain the sweep-line approach, time complexity, and how this maps to capacity planning for Swiggy's logistics team.
↑ 78 upvotes · 29 engineers asked this · SDE1
Swiggy
Medium
Technical round
RedisJavaPython
Implement a rate limiter for Swiggy's API gateway using the token bucket algorithm. Handle 1000 requests/second per user. Code the solution and explain how you'd deploy it across multiple API servers with Redis.
↑ 49 upvotes · 30 engineers asked this · SDE1
Swiggy
Medium
Technical round
JavaPython
Given delivery time estimates for N restaurants, find the restaurant with the minimum average delivery time across all its orders. Handle ties and explain your data structure choices.
↑ 41 upvotes · 24 engineers asked this · SDE1
Swiggy
Medium
Technical round
PostgreSQLRedisJava
Design the data model for Swiggy's menu system. A restaurant has categories, items, add-ons, variants, and availability windows (breakfast/lunch/dinner). How do you model this in PostgreSQL and handle real-time menu updates?
↑ 48 upvotes · 28 engineers asked this · SDE2
Swiggy
Medium
Technical round
2-5 yearsJava
You need a collection that maintains insertion order AND gives O(1) lookup by key. Which Java collection would you use, and why not a plain HashMap?
↑ 20 upvotes · 13 engineers asked this · SDE2
Practice these questions with AI feedback
Get instant grading on your answers, identify your weak areas, and generate a personalised 14-day study plan — all free.
Build my study plan →
More Swiggy Questions
Java Questions at Other Companies
Browse by company
Frequently asked questions
Given a list of delivery time windows for N restaurants, find the maximum number of restaurants whose windows overlap at any point in time.
Given a list of delivery time windows for N restaurants, find the maximum number of restaurants whose windows overlap at any point in time.
Explain the sweep-line approach, time complexity, and how this maps to capacity planning for Swiggy's logistics team.
Implement a rate limiter for Swiggy's API gateway using the token bucket algorithm. Handle 1000 requests/second per user. Code the solution and explain how you'd deploy it across multiple API servers with Redis.
Implement a rate limiter for Swiggy's API gateway using the token bucket algorithm. Handle 1000 requests/second per user. Code the solution and explain how you'd deploy it across multiple API servers with Redis.
Given delivery time estimates for N restaurants, find the restaurant with the minimum average delivery time across all its orders. Handle ties and explain your data structure choices.
Given delivery time estimates for N restaurants, find the restaurant with the minimum average delivery time across all its orders. Handle ties and explain your data structure choices.
Design the data model for Swiggy's menu system. A restaurant has categories, items, add-ons, variants, and availability windows (breakfast/lunch/dinner). How do you model this in PostgreSQL and handle real-time menu updates?
Design the data model for Swiggy's menu system. A restaurant has categories, items, add-ons, variants, and availability windows (breakfast/lunch/dinner). How do you model this in PostgreSQL and handle real-time menu updates?
You need a collection that maintains insertion order AND gives O(1) lookup by key. Which Java collection would you use, and why not a plain HashMap?
You need a collection that maintains insertion order AND gives O(1) lookup by key. Which Java collection would you use, and why not a plain HashMap?