Over the past few years, after closely mentoring a large number of Amazon Online Assessments through Programhelp, we’ve noticed a very clear—but often overlooked—pattern: most candidates who get eliminated are not those who “can’t code,” but those who fundamentally misunderstand what Amazon OA is actually filtering for. This article won’t repeat the usual “problem-grinding checklist” you see everywhere online. Instead, based on real candidate OA feedback and our long-term accumulated data, we break down Amazon OA from multiple angles—process, question types, and hidden elimination points—to make it truly clear. If you’re preparing for an Amazon OA for SDE / New Grad / Intern roles, this is one article you should read all the way through.
Amazon OA Overall Process Overview (Applicable to SDE / New Grad)
Using Amazon SDE / New Grad roles from the past year as an example, most Online Assessments include the following modules (the order may vary slightly):
Online Coding Assessment
- Typically 2 algorithm / coding questions
- The platform is mostly HackerRank.
- The duration ranges from 70 to 90 minutes
Work Style Assessment (Behavioral / Personality Assessment)
- Strongly aligned with Amazon Leadership Principles.
- There is no “standard answer,” but the pitfalls are very clear.
Amazon OA Real Questions & Experiences
Coding
Problem solving ideas
1. Use a CTE to preprocess the data, compute each department’s total salary with window functions, and rank employees in descending order by salary.
2. Filter the top-ranked employee (rank = 1), calculate their salary as a proportion of the department’s total salary, and determine whether optimization is needed based on the specified criteria.
MySQL Challenge
Problem solving ideas
1. Split the flat array into groups of three elements, sum up the ratings, and compute the average as (total_score × 10 // number_of_reviews), then truncate it to one decimal place.
2. Extract the month from the dates to count the number of reviews, identify the month with the highest count, and map it to the corresponding month name.
3. Clean punctuation from the review text, convert it to lowercase, extract words, filter out stop words, then count word frequencies and return the most frequent word.
Leave the OA level to someone who is more familiar with the rules.
For OA from major manufacturers such as Amazon, Meta, Google, and Goldman Sachs, we provide Remote invisible OA assistance service, covering common inspection modules such as algorithms, SQL, Debug, and system questions. The entire process adopts a low-interference remote connection method. There is no need to cut the screen, install plug-ins, or trigger the platform risk control mechanism, ensuring the security of the account and test environment to the greatest extent.
All assistance is completed one-on-one by engineers with real experience in interviews and actual operations at major manufacturers. It is strictly implemented in accordance with OA time limits and scoring logic, with a focus on ensuring that the pass rate of hidden test cases and code quality are up to standard. We focus more on "whether we can advance to the next round" rather than just "finishing the question."
Applicable to mainstream OA platforms such as HackerRank, CodeSignal, Codility, and Niuke.com.
There is no charge for failed test cases, and the process is clear and traceable.
