PayPal Interview Questions

10 questions available. Practice with AI-powered feedback.

Other companies

application design
DoorDash
Stripe
PayPal

DoorDash System Design: Global Donations & Campaigns

Prepare for DoorDash design rounds: build a scalable, secure global donation platform for time-bound campaigns with payment integration and real-time tracking.

Software Engineer, Backend EngineerMid Level
coding
PayPal
Amazon
Microsoft

PayPal Coding Question: Count Islands in 2D Grid with DFS

Count islands in a binary grid with num_islands using DFS/BFS. Includes approach, code hints, and time & space analysis to prepare for PayPal coding interviews.

Machine Learning Engineer, Software EngineerEntry Level
cs foundation
PayPal
Stripe
Square

PayPal CS Foundation — Distributed Systems Interview

Prepare for PayPal CS Foundation Distributed Systems: fault tolerance, data integrity, error handling and Java concurrency techniques—practice common follow-ups.

Software Engineer, Backend EngineerEntry Level
ml system design
PayPal
Stripe
Square

PayPal ML System Design: Real-Time Fraud Detection Engine

Prepare for PayPal ML interviews: design a low-latency, scalable real-time fraud detection pipeline. Learn components, latency tactics, scoring, and follow-ups.

Machine Learning Engineer, Data ScientistMid Level
online assessment
PayPal
Amazon
Uber

PayPal Word Search Grid Interview - DFS Backtracking

Practice PayPal's word search assessment: find a target string in a letter grid using DFS and backtracking. Get approach, edge-case tips, and performance notes.

Software Engineer, Backend EngineerEntry Level
coding
Stripe
PayPal
Square

Stripe Coding Interview: Match Payments to Invoices

Deterministic matching of payments to invoices using identifier, exact, then range rules. Tie-breakers and earliest due-date ordering for stable results.

Software Engineer, Backend EngineerEntry Level
backend system design
Stripe
Square
Paypal

Stripe System Design: Scalable Real-Time Logs & Metrics

Design a Stripe-style scalable system for real-time logs and metrics ingestion, processing and storage. Learn system flow, trade-offs, and interview follow-ups.

Software Engineer, Backend EngineerMid Level
behavioral
Stripe
Square
PayPal

Stripe Technical Influence Interview — Software Engineer

Prepare for Stripe's Technical Influence behavioral interview: learn to persuade stakeholders with data, resolve resistance, and craft impact-focused answers.

Software Engineer, Backend EngineerEntry Level
backend system design
PayPal
Venmo
Square

System Design: Hybrid Media Storage for Mobile Apps

Design a hybrid media storage system for mobile apps: combine on-device and cloud object storage, sync, caching, and offline access. Read design approach & follow-ups.

Software Engineer, Backend EngineerMid Level
coding
Visa
Mastercard
PayPal

Visa Coding Interview: Memory Allocator Allocate/Erase

Visa memory allocator: implement allocate [0,k] and erase [1,idx] on a 0/1 array. Key strategies: segment-tree, range updates. Prepare for coding interviews.

Software Engineer, Backend EngineerEntry Level

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