Design Secure Token Authorization and Large-File Transfer
Last updated: August 8, 2026
Quick Overview
Design a secure token authorization system that facilitates the transfer of large files between users while ensuring data integrity and security.
J.P. Morgan
August 8, 20261
0
13 solved
Design a secure token authorization system that facilitates the transfer of large files between users while ensuring data integrity and security.
This question is typically asked during the onsite interview round for software engineering candidates at J.P. Morgan. The interviewer is looking to evaluate the candidate's ability to design secure systems, understand authorization protocols, and handle large data transfers efficiently. This question tests both technical knowledge and the candidate's capability to think critically about security and performance in system design.
What the Interviewer Expects
- Identify key requirements for secure token authorization and large-file transfer.
- Propose a high-level architecture that outlines system components.
- Discuss security measures such as encryption and token expiration.
- Explain how to handle large file uploads and downloads efficiently.
- Address potential trade-offs and scaling considerations.
Key Topics to Cover
How to Approach This
- Start by clarifying functional and non-functional requirements with the interviewer.
- Estimate the scale: QPS, storage, bandwidth. This drives your design decisions.
- Draw a high-level architecture first, then deep dive into 1-2 critical components.
- Discuss trade-offs explicitly (e.g., consistency vs availability, SQL vs NoSQL).
- Address failure scenarios, monitoring, and how the system handles 10x traffic spikes.
Possible Follow-up Questions
- How would you implement token expiration and renewal?
- What encryption methods would you use for file transfers?
- Can you discuss potential bottlenecks in your design?
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Practice System Design ProblemsSample Answer
Requirements
To design a secure token authorization system for large-file transfers, we first need to establish the key requirements. These include:
- Security: The system must ensure that only authorized use...
High-Level Design
The high-level architecture consists of the following components:
- User Interface: A web or mobile interface for users to upload and download files.
- API Gateway: Manages requests and routes...
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