Preparing for Stripe-style backend interviews?
This guide gives you 8 real FinTech engineering logic problems designed to teach you how to think and communicate like a Stripe engineer — not just solve LeetCode.

These challenges are modeled after real production workflows in payments, billing, fraud, pricing, currency conversion, and event-driven systems — the exact style used at Stripe, Square, PayPal, and API-first startups.

⭐ Free Sample

If you want to preview the format and problem style first, you can download the free sample here:
👉 https://techinterviewprep.gumroad.com/l/vcvtnIt includes one fully worked Stripe-style scenario with reasoning steps.

What’s Inside (Full Version)

8 Stripe-style engineering challenges

• Real business context + clear problem statements
• Step-by-step reasoning walkthroughs
• Key clarifying questions to ask interviewers
• Edge cases, testing notes, and communication tips
• Performance considerations (only where needed)

Example Topics

• Currency conversion graph logic
• Tier-based pricing engine (fixed vs incremental)
• Fraud rule timeline evaluation
• Settlement & aggregation processing
• Subscription renewal & event flow reasoning
• CSV parsing + validation + matching

Who This Is For

Engineers targeting:

• Stripe / Square / PayPal / FinTech startups
• Backend, platform, and API-driven engineering roles
• Interviews that test real-world product logic rather than pure algorithms

Why This Works

Stripe interviews reward:

• Clear problem scoping & clarifying questions
• Business logic modeling
• Clean reasoning & articulation
• Practical, production-minded solutions

This guide teaches you those exact patterns.