Instagram Interview Questions: 8 from Real Interviews
Software engineering candidates at Instagram follow Meta's technical process. It begins with one initial interview, followed by a full loop of four to six interviews that last about 45 minutes each. The loop typically covers coding, design, and behavioral topics, with the exact process varying by role.
Meta says coding rounds test communication, problem-solving, implementation, and verification. It distinguishes systems design from product architecture, a distinction that matters for Instagram roles involving feeds, messaging, creator tools, and user-facing APIs. Meta's full-loop guide
What to Expect: Instagram Interview Process
In the technical screen, you'll solve about two problems in roughly 40 minutes without a compiler. The remaining interviews include design and behavioral sessions. Product roles might focus on API usability and feature architecture, while infrastructure roles might focus on scalability, performance, and distributed systems.
In 2025, Meta started using AI for coding interviews. Check the instructions your recruiter sends for your loop. Regardless of the tool, you're responsible for explaining your code, verifying outputs, and identifying incorrect assumptions.
How to Prepare and Pass Instagram Interviews
Set aside six to eight weeks. Practice arrays, trees, graphs, hashing, recursion, and heaps in a plain editor. Rehearse designs for feeds, messaging, media delivery, moderation, and privacy controls. Prepare behavioral stories about conflict, competing priorities, and cross-functional execution.
Use Lodely to practice Instagram coding, system-design, and behavioral questions in one plan. Time your answers and leave time for verification and interviewer follow-ups.
Instagram Interview Breakdown
Merge Sorted Arrays
function mergeSortedArrays(nums1, m, nums2, n)- You are given two sorted integer arrays nums1 and nums2, and integers m and n.
- Merge nums2 into nums1 as one sorted array and return nums1.
nums1.length == m + nnums2.length == n0 <= m, n <= 200-10^9 <= nums1[i], nums2[i] <= 10^9
nums1 = [1,2,3,0,0,0], m = 3, nums2 = [2,5,6], n = 3
[1,2,2,3,5,6]
nums1 = [1], m = 1, nums2 = [], n = 0
[1]
Type: Array and two-pointer techniques.
The Trick: In-place writes can erase unread values, so choose the write direction carefully.
What It Tests: Indexing, complexity, and verification.
Bipartite Graph
function isBipartite(n, edges)- Given an undirected graph with n nodes (labeled 0 to n-1) and a list of edges, determine whether the graph is bipartite.
- A graph is bipartite if you can partition its nodes into two sets such that every edge connects a node in one set to a node in the other set.
- Use BFS or DFS coloring to solve this.
1 <= n <= 10^40 <= edges.length <= 10^4edges[i].length == 20 <= edges[i][0], edges[i][1] < nNo self-loops or duplicate edges
n = 4, edges = [[0,1],[1,2],[2,3]]
true
n = 3, edges = [[0,1],[1,2],[0,2]]
false
Type: Graph traversal.
The Trick: Disconnected graphs require multiple traversals, and you must detect conflicts during coloring.
What It Tests: BFS or DFS, invariants, and edge cases.
Design Instagram
Type: Product and system design.
The Trick: Narrow the product scope before addressing media storage, feed generation, ranking, and delivery.
What It Tests: Requirements control, scalability, and trade-off judgment.
Five more examples complete the set. Managing Conflict tests behavioral specificity. Validate Binary Search Tree, Squares of Sorted Array, and Implement Trie test tree invariants, two pointers, and prefix data structures, respectively. Design a Chat Service or Feed API tests real-time delivery, fan-out, ordering, and API boundaries.
What Comes After The Interview
Meta reviews and rates interview feedback before offering a role and placing a candidate on a team. Reported 2026 salary is about $181,000 at Meta E3, $302,000 at E4, and $435,000 at E5. Including equity raises reported earnings substantially at higher levels. Meta - Software engineer - United states
Candidate Experiences
One mid-level product engineer described a recruiter chat, an assessment package, a live technical screen, and an onsite about a month later. The onsite included coding, system design, behavioral, and AI-coding interviews. The candidate struggled with an API-focused chess-design question and was rejected, but said the preparation materials were extremely detailed. Practice both distributed architecture and product architecture.
Conclusion
Instagram's coding and design interviews require you to solve problems quickly and base implementation and design decisions on product constraints. Use Lodely to combine the selected questions into full-loop practice.
✉️ Get free faang interview cheat sheet and interview tips weekly
✉️ Get free faang interview cheat sheet and interview tips weekly



