Meta OA Questions 2020: What Candidates Actually Saw
Last updated: May 2026
23+ Meta online assessment questions reported by candidates who took the OA in 2020. Sourced from 1Point3Acres, LeetCode, Blind, Glassdoor, and Reddit. Data grows as new reports are added.
Meta OA Format in 2020
The Meta online assessment has followed a consistent format across multiple hiring cycles. Based on 2020 reports in the database, candidates typically see 2 to 3 algorithmic coding problems delivered through a proctored online platform (most commonly HackerRank). Some roles include additional behavioral or work-simulation components after the coding section.
Time limits reported by candidates range from 70 to 110 minutes for the full assessment. The coding problems are auto-graded, so edge case handling and runtime efficiency both matter. Partial credit is available on some platforms if your solution passes a subset of test cases.
Real Meta OA Questions from 2020
Facebook | OA Final | Coding | 2020 | has duplicates
check for duplicates inside a subarray of length k \thas_duplicates([1, 2, 3, 2, 4],3)==True \thas_duplicates([1, 2, 3, 4, 2],3)==False Ok to implement o(n^2) then improve to o(n)
6+ months of hard work and finally offer from Facebook
Just got an offer from Facebook in the mid July; however the journey was not an easy one. Before getting the offer from Facebook, I got painful rejections from tons...
Facebook| Phone screen| All even number, add string
45-50 mins of Online Interview - Coderpad. First 5 mins: Introduction 40Min: Coding Round Last 5 Mins: Asking any questions First interview: https://leetcode.com/problems/binary-tree-level-order-traversal-ii/ I coded in 7-8 min but couldn\'t give correct time complexity. The...
Facebook | Phone | Find if all numbers appear an even number of times & Right Side View
Location: Boston Had an initial conversaton with an engineer from Facebook. We struggled for 15 min to get the coderPad fixed and finally we did it on google doc. Interviewer asked me...
Facebook | Phone | Merge 2 Sorted Lists & Max Path Sum
Location: London Position: E4/E5 at Facebook My Background: SDE in Amazon for ~3 years. Total experience ~ 5 years. Facebook recruiter reached out to me via linkedin for E4/E5 SWE in April 2020. I requested...
Facebook | Software Developer - Infrastructure | London | Phone Screening [Reject]
Total Experience: 10+ Years Current Domain: Embedded (OS libraries) Current Location: India Tool used for virtual Interview: BlueJean, coderPad. Interview Date: Last week of August 2020 Interview Time slot: 45 minutes Phone Screening Round Questions: 1....
Facebook | SSE | London | Oct 2020 [Reject]
Status: Experienced 6 years Position: SSE in a service based company. Location: India Date: October, 2020 Interview Process : \t1. Very short discussion with recruiter about my current role and experience and QnA( 1 word...
Facebook | iOS Engineer | Phone Interview
It was supposed to be a 45 mins call but went on for about 50-55 minutes The interviewer divided the interview into 3 parts (kind of) Part 1 (iOS theoretical questions) What parameters...
Facebook | Phone | Valid Palindrome & Sorted Iterator
45-50 mins of Online Interview - Coderpad. First 5 mins: Introduction 40Min: Coding Round Last 5 Mins: Asking any questions The interview consist of 2 problems 1. https://leetcode.com/problems/valid-palindrome/ 2. Sorted Iterator Given N sorted array...
Sentence Generator | Facebook | Online OA | 2019
This question was asked by Facebook Implement a function generate_template(...) The goal is to create a random word, phrase or full sentence from a given template data source Template Data [{ "group_id": 154, ...
Facebook | OA | Binary Tree vertical order traversal and basic calculator
https://leetcode.com/problems/basic-calculator/ https://leetcode.com/problems/binary-tree-vertical-order-traversal/
Facebook | Menlo Park | Production Engineer Intern | Nov 2019 | OA+Phone Screening [Rejected]
A recruiter reached out to me and asked me some basic info (Citizenship,Location, Etc.). Then the interview process started. Round 1 20-25 multiple choice questions on Linux fundamentals such as what does...
Facebook | E5 | Phone Screen | Jul 2020
Hiring Position Details Position: E5 SWE Location: Menlo Park Interview Process 45 minute interview conducted over BlueJeans and CoderPad. 1. Introduction (5 minutes) 2. Easy LC problem (10 minutes) \ta. Provided a quick and dirty solution (Suboptimal...
OCI (Senior SwE) | Facebook (E5) | Amazon (SDE2) - Reject | Reject | Reject
Status: 6 Yrs Exp, MS from Top 30 schools Position: Senior SwE at OCI Location: Seattle, CA Date: January 2020 Leetcode questions(100) - Mostly easy Phone Interview Passed (Easy Leetcode) Onsite Failed (Most frequent leetcode questions...
Facebook | E5 | Onsite | Aug 2020 [Offer]
Hiring Position Details Position: E5 SWE Location: Menlo Park Interview Process Four 45-minute interviews conducted over BlueJeans, CoderPad, and Google Drawings. The following is not listed in any particular order (i.e not chronological). Coding...
Facebook E5 | Menlo Park | Reject
Hiring Position Details Position: E5 SWE Location: Menlo Park Interview Process Four 45-minute interviews conducted over BlueJeans, CoderPad, and Google Drawings. The following is not listed in any particular order (i.e not chronological). Coding round...
Facebook | E6 | Menlo Park | Aug 2020 [Reject]
Hi Leetcode Community, just went through a round with Facebook and I\'d like to share my experience. Overall it was a very well ran interview process. I personally haven\'t interview...
Facebook | SE5 | NYC | Nov 2020 | Offer
YOE: 9.5 Position: Software engineer Due to a signed NDA I cannot talk about questions, but will tell you about my interview experience and preparation. Facebook recruiter contacted me via LinkedIn first. We...
Facebook | Phone | Binary Tree Right Side View & Merge Sorted Arrays
Position: E6 generalist, SFBA got these two questions: https://leetcode.com/problems/binary-tree-right-side-view/ https://leetcode.com/problems/merge-sorted-array/ (where each array have zeroes added at the end, e.g. 12345000, the sizes can be different; do it in-place) the interview...
Facebook | E5 SWE | NY, USA | Summer 2020 [Offer]
E5 in New York. I won\'t share all specific questions because NDA. No CS degree but I do have a bachelor\'s and 7-8 years of professional dev experience as well. After...
Topic Breakdown (2020 OA)
Topics reported by candidates who took the Meta OA in 2020:
Difficulty Breakdown (2020 OA)
10
easy
2
hard
Difficulty labels are reported by candidates or inferred from LeetCode ratings.
How to Prepare for the Meta OA
The Meta OA is a timed, auto-graded coding test. Preparation is different from interview prep: you need to optimize for both correctness and speed, since partial credit requires passing test cases, not just showing reasoning.
- Practice timed sessions. Set a timer for 35 to 45 minutes per problem and simulate the real constraint.
- Focus on the topic clusters that appear most in Meta OA reports: dynamic programming, graphs, arrays, and strings make up the majority of reported problems.
- Read the problem constraints carefully before writing code. The constraints often reveal the expected time complexity and algorithm type.
- Use the LeakCode database to review 2020 OA questions from actual candidates. Pattern recognition across multiple sightings is a stronger prep signal than any single mock problem.
- If the OA includes a work simulation section, practice under realistic conditions. This section tests judgment and values alignment, not coding ability.
FAQ
What does the Meta OA look like in 2020?
Based on 2020 candidate reports, the Meta OA typically includes 2 to 3 coding problems and runs 70 to 110 minutes. Topics lean toward dynamic programming, graphs, arrays, and strings. Some roles include a work simulation section after the coding component.
How long is the Meta OA?
Most candidates report 70 to 90 minutes for the coding component. Roles with additional work simulation sections extend the total time to 110 to 150 minutes. Check your invitation email for the exact time allocation for your specific role.
What platform does Meta use for the OA?
Meta uses HackerRank or its own proprietary platform depending on the role and hiring cycle. Your invitation will specify the platform. Both platforms support multiple languages including Python, Java, C++, and JavaScript.
Are these real Meta OA questions?
Yes. All questions in the LeakCode database come from candidate reports on 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode. They are not AI-generated. Each question links to its source where available.
Other Meta OA Years
Related: Meta OA Hub · Meta All Questions · All OA Questions · Data Sources