Exact interview questions. Word for word.

OpenAI

Software EngineerIntern

System Design

Design a type system for a toy programming language. The language supports primitives, generics, tuples, and functions with a custom syntax for defining and resolving types.

Solution: yeah we see you in the inspector. full type unification, generic resolution, and class breakdowns are locked. takes like 30 seconds to create an account.

Ramp

Software EngineerIntern

Coding

You are given a CSV file with one user's transactions. Detect all charges that follow a weekly recurring pattern, then output the merchant, amount, and interval.

Solution: inspect element huh... the detection algorithm, interval logic, and output format are all inside. takes like 30 seconds to create an account. just sign up!

Jane Street

Software EngineerNew Grad

System Design

Design a two-player board game on an infinite board. Pieces obey gravity and fall to the lowest available position in a column.

Solution: caught you in the inspector. board representation, gravity logic, and win detection are all written up inside. not gonna help you out here though.

HRT

Software Engineer (C++)Experienced

Coding

Implement a ChecksumWriter that appends bytes to a file and inserts checksums every N bytes. Handle partial writes across multiple calls.

Solution: inspect element respect honestly. full checksumwriter with boundary handling and chunk logic is inside tho. you already know what to do here.