Goldman Sachs OA 2026 Interview Experience | HackerRank Questions + Solutions + Prep Guide

Hi everyone — I recently completed the Goldman Sachs Online Assessment and wanted to share a detailed breakdown of the experience. As one of the top investment banks on Wall Street, Goldman Sachs has a fairly structured and competitive OA process for tech roles. The assessment focuses on a combination of coding, logical reasoning, and time management under pressure. This post covers the OA format, real question types, detailed solution approaches, and preparation tips to help you get through it more efficiently. OA Overview (2026 Updated) Platform: HackerRank Duration: ~90–120 minutes (varies by role) Questions: 2–3 coding + 2 math/logic questions Languages: Python, Java, C++, JavaScript, etc. Focus: Arrays, strings, simulation, BFS variations, edge cases, time management One key characteristic of the Goldman Sachs OA is the mix of question types. You are expected to quickly switch between coding and logical reasoning, which makes pacing extremely important. Coding difficulty is typica