SoFi interview questions

Design payment authorization, holds, and daily batch settlement

Design a payment system that processes transactions through an external payment service for approval/denial, holds approved amounts, and batches all transactions daily for…

Companies: SoFi, Adyen, Agoda, Amazon +5

Last reported Mar 2026

Design a Test Automation Infrastructure for a Multi-Tenant Queue Processing System

Design a scalable test automation infrastructure for a multi-tenant platform that processes inputs from a single queue (supporting pre-MR, MR, and pipeline ingress types) and…

Companies: SoFi

Last reported Mar 2026

How do you build trust?

Companies: SoFi, Amazon

Last reported Mar 2026

Tell me about a time you had to navigate ambiguity or uncertainty in a project or role

Companies: SoFi, Bloomberg, Confluent, eBay +5

Last reported Mar 2026

Design Dropbox or Google Drive

Large file transfers with small metadata transactions: resumable uploads, offline conflicts, reliable change feeds, and shared subtrees whose permissions change as files move.

Companies: SoFi, Amazon, Apple, Autodesk +17

access-control · change-data-capture · conflict-resolution · data-versioning

Last reported Mar 2026

LRU Cache

Implement an LRUCache that supports O(1) average-time get(key) returning the value or -1 and put(key, value) which inserts or updates a key and, if capacity…

Companies: SoFi, Adobe, Amazon, Anthropic +29

Data Structure Design · Design · Doubly-Linked List · Hash Table

Last reported Mar 2026

Tell me about a project where the requirements were not clear or kept changing. How did you adapt and maintain productivity?

Companies: SoFi, Amazon, Apple, Bloomberg +11

Last reported Mar 2026

Implement a Family Tree

Given a Person class and a FamilyTree class, implement the getAncestors method on Person and the areRelated and commonAncestors methods on FamilyTree.

Companies: SoFi, Microsoft

Last reported Feb 2026

Word Ladder

Find the length of the shortest transformation sequence from beginWord to endWord where each step changes exactly one letter and every intermediate word must be…

Companies: SoFi, Amazon, Apple, Fan +5

Bidirectional Search · Breadth-First Search · Hash Table · String

Last reported Jul 2025

Can you share an example where you resolved a significant conflict between different teams or departments in your organization?

Companies: SoFi, Amazon, Anthropic, Google +6

Last reported Jun 2025

Design Recommender System

Design a recommendation system that analyzes user preferences and behavior to suggest relevant content, products, or services with personalized rankings and filtering capabilities.

Companies: SoFi, Disney, Goldman Sachs, LinkedIn +1

Last reported Jun 2025

Give me an example of a tough or critical piece of feedback you received.

Companies: SoFi, Airbnb, Amazon, Anthropic +14

Last reported Jun 2025

Peak Index in a Mountain Array

Given an array that strictly increases then strictly decreases (a mountain array), find the index of the peak (maximum) element in O(log n) time by…

Companies: SoFi

Last reported Jun 2025

Top K Frequent Elements

Given an integer array and k, return the k most frequent elements — the core challenge is to count element frequencies and extract the top-k…

Companies: SoFi, Amazon, Bloomberg, Google +9

Array · Bucket Sort · Counting · Divide and Conquer

Last reported Jun 2025

What project are you most proud of?

Companies: SoFi, Adyen, Amazon, Anthropic +37

Last reported Jun 2025

Design a Pod Connectivity Tracking System

Design a distributed system with a client and server that tracks and monitors the connectivity status of all pods, allowing users to query and observe…

Companies: SoFi

Last reported May 2025

Design a fintech homepage ranker

Companies: SoFi

Plain-Language Explanation of How AI Works for an Older, Non-Technical Listener

Companies: SoFi

Communication & Stakeholders