Scale Engineer

Software Engineer

Software EngineerSDE3Hard

This interview process is designed to assess candidates for the Software Engineer (SDE3) role at Cashfree. It evaluates technical proficiency, problem-solving skills, system design capabilities, and cultural fit.

Rounds·4

Timeline·~7d

Experience·5 - 8 yrs

Comp band·US$180000 - US$250000

Interview time·225 min

Evaluation

What they measure.

  • Technical depth and breadth
  • Problem-solving approach
  • System design and architecture skills
  • Coding proficiency and best practices
  • Communication and collaboration skills
  • Cultural fit and alignment with company values

Preparation

How to prepare.

Tips

  1. Thoroughly review data structures and algorithms, focusing on time and space complexity.
  2. Practice coding problems on platforms like LeetCode, HackerRank, and GeeksforGeeks, targeting medium to hard difficulty.
  3. Study system design principles, common architectural patterns (microservices, event-driven), and distributed systems concepts (CAP theorem, consensus algorithms).
  4. Prepare to discuss your past projects in detail, highlighting your contributions, challenges faced, and solutions implemented.
  5. Understand core concepts of operating systems, databases, and networking.
  6. Be ready for behavioral questions that assess your teamwork, leadership, and problem-solving approach in real-world scenarios.
  7. Research Cashfree's products, services, and company culture to understand how your skills align.

Study plan

Fig · Study plan — 05 phases

01 / 05
01

Phase 01 of 05

Data Structures and Algorithms

Weeks 1-2: DSA fundamentals and practice.

Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, trees, graphs, hash maps, heaps, and sorting/searching algorithms. Practice problems related to each topic, aiming for optimal solutions. Understand time and space complexity analysis.

Questions

Commonly asked.

  • Design a distributed cache system.
  • How would you design a rate limiter?
  • Explain the difference between SQL and NoSQL databases and when to use each.
  • Write a function to find the k-th largest element in an unsorted array.
  • Describe a situation where you had to deal with a production issue. What was your approach?
  • How do you approach code reviews?
  • What are the challenges in building a scalable e-commerce platform?
  • Discuss your experience with asynchronous programming.
  • How do you stay updated with new technologies?
  • Tell me about a time you disagreed with a technical decision. How did you handle it?

Locations

Regional differences.

Fig · Regions — 02 locations

01 / 02

Location

Bangalore

Interview focus

Deep understanding of distributed systems and microservices architecture.Experience with cloud platforms (AWS, Azure, GCP).Proficiency in designing scalable and fault-tolerant systems.Strong problem-solving and debugging skills in complex environments.

Common questions

  • How would you design a URL shortener service?
  • Explain the CAP theorem and its implications.
  • Discuss a challenging bug you encountered and how you resolved it.
  • How do you ensure scalability and reliability in your code?
  • Describe your experience with distributed systems.

Tips

  • Brush up on distributed systems concepts and common design patterns.
  • Be prepared to discuss your experience with specific cloud services.
  • Practice explaining complex technical concepts clearly and concisely.
  • Highlight projects where you significantly improved system performance or scalability.

Rounds

Round-by-round.

Expand a step for evaluation criteria, sample questions, and prep notes.

DSA

Coding questions at Cashfree.

Frequently reported on Cashfree loops

View all at Cashfree

Other guides

More at Cashfree.