Instacart's Senior Engineer 2 (L6) interview process is designed to assess a candidate's technical depth, problem-solving abilities, system design skills, and leadership potential. The process typically involves multiple rounds, including technical interviews, a system design interview, and a behavioral/leadership interview. The goal is to identify candidates who can not only solve complex technical challenges but also mentor junior engineers and drive technical initiatives.
Rounds·4
Timeline·~14d
Experience·6 - 10 yrs
Comp band·US$170000 - US$220000
Interview time·180 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 04 phases
01 / 04Phase 01 of 04
Weeks 1-2: DSA fundamentals and practice (2-3 problems/day).
Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, trees, graphs, hash maps, heaps, sorting, searching, dynamic programming, and graph traversal algorithms. Practice implementing these and analyzing their time and space complexity. Aim for 2-3 coding problems per day.
Phase 02 of 04
Weeks 3-4: System Design principles and case studies.
Weeks 3-4: Dive into System Design. Study distributed systems concepts, scalability patterns, database design (SQL/NoSQL), caching, load balancing, message queues, and API design. Read system design case studies and practice designing common systems like Twitter feed, URL shortener, etc. Focus on trade-offs.
Phase 03 of 04
Week 5: Behavioral questions (STAR method) and Instacart values.
Week 5: Behavioral and Leadership Preparation. Reflect on past experiences related to teamwork, conflict resolution, leadership, mentorship, and handling failure. Prepare specific examples using the STAR method. Understand Instacart's values and how your experiences align.
Phase 04 of 04
Week 6: Mock interviews and final review.
Week 6: Mock Interviews and Refinement. Conduct mock interviews with peers or mentors covering both technical and behavioral aspects. Focus on improving communication, clarity of thought, and time management. Review areas where you felt weak during practice.
Questions
Locations
Fig · Regions — 03 locations
01 / 03Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
Technical Coding Interview · 45 min · Software Engineer (L5/L6)
This round focuses on your core technical skills. You will be given 1-2 coding problems, typically involving data structures and algorithms. The interviewer will assess your ability to understand the problem, devise an efficient solution, write clean code, and explain your thought process. Expect follow-up questions about edge cases, optimizations, and trade-offs.
What they look for
Evaluation
Sample questions
Given a list of product IDs and their corresponding prices, find the top K most expensive products.
Implement a function to find the lowest common ancestor of two nodes in a binary tree.
Design a data structure that supports insertion, deletion, and getRandom in O(1) time.
Prep for this round
Common rejection reasons
System Design Interview · 60 min · Senior Software Engineer / Engineering Manager
This round evaluates your ability to design large-scale, distributed systems. You'll be presented with an open-ended problem (e.g., design a URL shortener, a social media feed, or an e-commerce platform feature). The interviewer will assess your approach to requirements gathering, high-level design, component breakdown, data modeling, API design, and consideration of scalability, reliability, and performance. You should be prepared to discuss trade-offs and justify your choices.
What they look for
Evaluation
Sample questions
Design a system to handle real-time price updates for millions of products on Instacart.
Design an API for Instacart's order fulfillment system.
How would you design a distributed caching layer for Instacart's product catalog?
Prep for this round
Common rejection reasons
Behavioral & Leadership Interview · 45 min · Engineering Manager / Director
This round focuses on your behavioral and leadership qualities. You'll be asked questions about your past experiences, focusing on how you've handled challenges, worked in teams, led projects, mentored others, and dealt with conflict. The interviewer will use the STAR method (Situation, Task, Action, Result) to probe for specific examples. This is also an opportunity for you to ask questions about the team, culture, and career growth.
What they look for
Evaluation
Sample questions
Tell me about a time you had to lead a project or initiative. What were the challenges and how did you overcome them?
Describe a situation where you had a conflict with a colleague or manager. How did you resolve it?
How do you mentor junior engineers? Provide an example.
Tell me about a time you failed. What did you learn from it?
Prep for this round
Common rejection reasons
Hiring Manager / Fit Interview · 30 min · Hiring Manager / Recruiter
This is often the final round, where the hiring manager or a senior leader assesses your overall fit for the team and the company. They will discuss your career goals, motivations, and how you see yourself contributing to Instacart. This is also your chance to ask in-depth questions about the team's roadmap, culture, and opportunities for growth. The goal is to ensure a mutual fit.
What they look for
Evaluation
Sample questions
What are your long-term career goals, and how does this role at Instacart fit into them?
What interests you most about working on this specific team?
Do you have any questions for me about the team, the role, or Instacart?
Prep for this round
Common rejection reasons
DSA
Frequently reported on Instacart loops
Other guides
