Stripe 26 New Grad OA seconds! 60 minutes a question 5 stages, the original logic questions can be so cool!

Just last week, I accompanied a student with a master's degree in the U.S. to complete Stripe 2026 New Grad OA The student is a CS to DS background with solid program experience but limited brush-up. This student is from CS to DS background, with solid project experience but limited brush-up, and his first two OA's were screened due to confusing logic. Later, he learned about our "OA Code Collaboration Program for System Simulation" and decided to entrust us to do the whole process for him.

His core pain point is that he can understand the requirements but cannot organize the code logic efficiently. This type of multi-stage system simulation requires maintaining complex relationships such as server state, connection mapping, object allocation, etc. at the same time, which can lead to variable conflicts if you are not careful. Our technical team completed the whole process from requirement analysis to code submission in 60 minutes by using a real-time shared code editor.

The final result exceeded expectations - the HackerRank platform passed the whole process and all 5 test cases were green lighted. During the whole process, students only need to confirm the logic at key nodes, the rest of the code writing, debugging and optimization are all done by our engineers.

Stripe OA Overview

firms:Stripe
a job: Software Engineer / New Grad 2026
PlatformHackerRank (full recording + camera)
quantity of questions1 question, 5 parts
duration: 60 minutes
difficulty:: Medium-easy (the key is in the logic, not in the algorithm)
language restriction: Optional Python / Java / C++

This scene belongs to the typical system state simulation class of OA.
Not an algorithmic question like LeetCode, but more of a test of your "thought management skills" -- to be able to keep track of multiple states of servers, connections, objects, capacity, etc. at the same time.

Stripe 26 New Grad OA Title Recall Version

Design a Server Load Balancing System

You are given.

numServer: total number of servers
MaxConnection: maximum connections each server can handle
requests[n]:: A list of incoming requests

Each request can be one of.
CONNECT, DISCONNECT, or SHUTDOWN.

Your task is to simulate how servers manage these requests and return a log of all accepted connections.

Part 1

Handle only CONNECT requests.
Each CONNECT request is represented as.

["CONNECT", connectId, userId, objId]

Routing rule.

Choose the server with the smallest current connection count.
If multiple servers have the same number of connections, choose the one with the smaller index (Server 1, Server 2, ...).

Output which server each connection is routed to.

Part 2

Add DISCONNECT requests.

["DISCONNECT", connectId, userId, objId]

Part 3

Add an optimization rule.
If multiple CONNECT requests share the same objId, they should all be routed to the same server (if possible).

Part 4

Add the capacity limit.
Each server can hold at most MaxConnection connections.
If a server is full, skip (reject) the new connection and don't add it to the log.

Part 5

Add the SHUTDOWN operation.

["SHUTDOWN", serverId]

When a server is shut down.

All its current connections should be reassigned to other active servers following the same rules.
If reassignment fails (because all servers are full), drop those connections.
Remove the shutdown server from the active pool.

Common Potholes

Part 3: When the server for the same obj is full, you must find a new server.
Part 5: Remove the obj_to_server mapping after the shutdown, otherwise it will point to the failed server.
Connections that are rejected or dropped are not logged.
After shutdown, you have to re-route the old connection, you can't just ignore it.

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