FDE Interview Preparation
Start Here
Know what each round is testing, then use the handbook to prepare only what you need.
Coding
Use Python or TypeScript comfortably. For problem-solving difficulty, NeetCode 75 is enough for most FDE interviews.
Technical Deep Dive
Prepare two projects you can explain end to end: architecture, decisions, trade-offs, failures, debugging, and measurable results.
System Design
Practice clarifying requirements, mapping data flow, designing integrations, and handling security, reliability, scale, and rollout.
Commercial and Case
Start with the customer problem. Define value, constraints, scope, risks, success metrics, and the smallest useful delivery plan.
Behavioral and Founder
Prepare specific stories about ownership, ambiguity, customer pressure, conflict, failure, learning, and why you want to work as an FDE.
Not sure where to begin?
Start with the general plan, or ask Octopy to build one around your upcoming interview.