This interview process is designed to assess candidates for the Lead Software Engineer position at Persistent Systems. It evaluates technical expertise, problem-solving abilities, leadership potential, and cultural fit.
Rounds·4
Timeline·~14d
Experience·5 - 10 yrs
Comp band·US$140000 - US$180000
Interview time·210 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 04 phases
01 / 04Phase 01 of 04
Weeks 1-2: Data Structures & Algorithms (LeetCode Medium/Hard)
Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice implementing these in your preferred language and analyze their time and space complexity. Solve LeetCode problems tagged 'Medium' and 'Hard'.
Phase 02 of 04
Weeks 3-4: System Design Fundamentals
Weeks 3-4: Deep dive into system design. Study concepts like scalability, availability, reliability, databases (SQL vs. NoSQL), caching, load balancing, message queues, and microservices architecture. Practice designing common systems like Twitter feed, URL shortener, or a distributed cache.
Phase 03 of 04
Week 5: Software Engineering Best Practices
Week 5: Review software engineering best practices, including SOLID principles, design patterns (e.g., Factory, Singleton, Observer), testing strategies (unit, integration, end-to-end), and CI/CD concepts. Understand how to write clean, maintainable, and testable code.
Phase 04 of 04
Week 6: Behavioral & Leadership Preparation
Week 6: Prepare for behavioral and leadership questions. Reflect on your past experiences and identify examples that demonstrate leadership, problem-solving, teamwork, and conflict resolution. Practice articulating these using the STAR method. Research Persistent Systems' values and culture.
Questions
Locations
Fig · Regions — 02 locations
01 / 02Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
Data Structures And Algorithms Interview · 60 min · Senior Software Engineer / Technical Lead
This round focuses on assessing your fundamental programming skills and problem-solving abilities. You will be presented with coding challenges that require you to implement algorithms and data structures. The interviewer will evaluate your approach, code quality, and ability to explain your thought process and complexity analysis.
What they look for
Evaluation
Sample questions
Given an array of integers, find the contiguous subarray with the largest sum.
Implement a function to reverse a linked list.
Find the k-th smallest element in a binary search tree.
Prep for this round
Common rejection reasons
Architecture & Scalability · 60 min · Senior Architect / Principal Engineer
This round evaluates your ability to design complex software systems. You will be given an open-ended problem and asked to design a solution, considering aspects like scalability, reliability, and performance. You'll need to discuss trade-offs, choose appropriate technologies, and justify your design decisions.
What they look for
Evaluation
Sample questions
Design a URL shortening service like bit.ly.
Design a system to handle real-time stock price updates.
Design a distributed cache system.
Prep for this round
Common rejection reasons
Behavioral & Leadership Interview · 45 min · Engineering Manager / Director
This round focuses on your leadership capabilities, team management skills, and overall fit within the company culture. You'll be asked behavioral questions about your past experiences leading teams, mentoring engineers, handling conflicts, and making difficult decisions. The interviewer will assess your communication style and how you collaborate.
What they look for
Evaluation
Sample questions
Tell me about a time you had to lead a team through a difficult project. What was your approach?
How do you handle underperforming team members?
Describe a situation where you had to influence a technical decision. What was the outcome?
Prep for this round
Common rejection reasons
Executive/Strategic Interview · 45 min · Director of Engineering / VP of Engineering
This final round is with senior leadership and focuses on your strategic thinking, business acumen, and ability to align technical initiatives with the company's overall goals. You'll discuss your vision for the team, your approach to technical strategy, and how you contribute to product success at a higher level.
What they look for
Evaluation
Sample questions
What is your vision for a Lead Software Engineer in our organization?
How would you prioritize technical initiatives to align with business goals?
Describe a time you had to make a significant technical trade-off that impacted the product roadmap.
Prep for this round
Common rejection reasons
DSA
Frequently reported on persistent systems loops
Other guides
