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Coding exam

The coding exam sets three timed problems in the language a job asks for, answered in a full editor with both the camera and the shared screen recording. Below is that screen, working, with a guided walkthrough of every part of it.

Guided walkthrough13 steps · about three minutes

Python exam for Senior Backend Engineer

Question 1: Given a list of integers and a target, return the two numbers that add up to that target. Each input has exactly one answer, and the same element may not be used twice. Return the pair as a list, smaller number first.

Example 1:

Input: nums = [2, 7, 11, 15], target = 9 Output: [2, 7]

Example 2:

Input: nums = [3, 2, 4], target = 6 Output: [2, 4]

Less

0:38:12

main.py

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def two_sum(nums, target):
    seen = {}

    for index, value in enumerate(nums):
        # the number that would complete the pair
        needed = target - value

        if needed in seen:
            return sorted([needed, value])

        seen[value] = index


print(two_sum([2, 7, 11, 15], 9))

Output:

A working replica of the real screen — nothing here is recorded or submitted.
It is built for a desktop screen, so on a narrow window it pans sideways rather than reflowing.

Live coding exams

MeritFinder generates live coding exams in the required languages, with online proctoring and automatic evaluation of the submitted code.

Overview

A candidate can talk convincingly about how they would solve a problem. Working code is harder to fake. MeritFinder puts candidates in front of a real coding task in the languages the role requires, then evaluates the result on more than just whether it passed.

How it works

KYC and proctoring

An optional identity check runs before the exam starts, adding trust without slowing the process down.

Coding challenge

MeritFinder generates a coding challenge in the programming languages required for the role.

Code evaluation

Submitted code is evaluated on test case success, code quality, and time and memory efficiency.

Reporting

Results and performance insights appear automatically on the employer’s dashboard for review.

Why it matters

Candidates are judged on working code, not a description of it on a whiteboard. This is closer to the actual job, and harder to fake than a take home assignment with no proctoring.

What MeritFinder evaluates

Whether the code passes the required test cases
The quality and readability of the code itself
Time and memory efficiency of the solution

Proctoring and anomaly detection

Live proctoring flags unusual activity during the exam, such as copying code from an external source, so employers can trust that the submitted solution reflects the candidate’s own work.

Benefits and time savings

One proctored session replaces a take home assignment and a separate live coding interview, saving time for both the candidate and the hiring team.

Coding exam