Recently, I helped a trainee to go through a written test+electrical interview for Epic System, and overall I found that the process has a strong sense of routine, especially for OA, which is easy to get stuck in time if you don't brush up the questions in advance. Therefore, I would like to organize this student experience into a complete sharing, including the OA modules of the demolition, sample questions and problem solving, electric interview high frequency questions and answer ideas, to prepare for the Epic students a reference.
Epic Online Assessment Question Distribution
Epic's OA has four parts in total, the order is not fixed, you can freely choose which one to do first, but you must finish it after entering, and the whole process will be recorded + audio + open camera. Draft paper is allowed.
- 2min Fill in the blanks: Mixed logic + math questions, two minutes each, very intense.
- Math: The original question bank or variants, partly like a brain teaser.
- logical choice fill in the blanks: Almost exactly the same as the OA self test, in the same order.
- Programming: Four questions in total, rewritten question bank with long text descriptions to test familiarity; no test case.
OA | Epic Online Assessment Questions
👉 2min Fill-in-the-Blank
Q1.
If A is older than B, B is older than C, and C is older than D, who is the youngest?
Solution.
Obvious ordering A > B > C > D, so the youngest is D.
Q2.
A train travels 60 miles in 1.5 hours. What is the average speed?
Solution.
60 ÷ 1.5 = 40 miles/hour.
👉 Math Section
Q1.
A box contains 5 red, 4 blue, and 3 green balls. If one ball is chosen at random, what is the probability that it is not red?
Solution.
Non-red = 4 + 3 = 7, total = 12 → Probability = 7/12.
Q2.
If it takes 5 machines 5 minutes to make 5 items, how long will it take 100 machines to make 100 items?
Solution.
One machine makes 1 item in 5 min.
So 100 machines make 100 items also in 5 minutes.
👉 Logic Multiple-Choice
Q1.
All squares are rectangles. Some rectangles are circles. Which of the following must be true?
A. All circles are squares
B. Some squares are circles
C. Some rectangles are squares
Solution.
All squares are rectangles, so option C is correct.
Q2.
If the first two statements are true, is the last statement true?
- All doctors are professionals.
- Some professionals are teachers.
- Therefore, some doctors are teachers.
Solution.
The conclusion does not follow logically → False.
👉 Programming Section
Q1. Simulate 9-key typing (T9 predictive text)
- You are given a mapping of digits (2-9) to letters, like on a phone keypad.
- Input is a string of digits, output all possible letter combinations.
Solution Idea.
Backtracking / DFS to generate combinations.
Time complexity: O(3^n) where n = length of digit string.
Q2. Longest Consecutive Sequence
- Given an unsorted array of integers, return the length of the longest consecutive sequence.
- Example.
[100, 4, 200, 1, 3, 2] → 4(sequence is[1,2,3,4]).
Solution Idea.
Use a hash set for O(1) lookup. For each number, expand left and right if possible, track max length.
Time complexity: O(n).
Q3. Balanced Brackets
- Input: string with characters
()[]{} - Output: true if brackets are balanced, false otherwise.
Solution Idea.
Stack-based solution: push opening bracket, pop when matching closing appears.
Time complexity: O(n).
Q4. Matrix Rotation
- Given an N×N matrix, rotate it 90 degrees clockwise in-place.
Solution Idea.
- Transpose the matrix
- Reverse each row
Time complexity: O(n²).
electric surface
Epic's e-interview is a behavioral interview with a relatively relaxed atmosphere, but the points of investigation are very clear: your motivation, communication skills, and long-term development direction. The interview lasted about 30-40 minutes and the main questions focused on the following categories:
1. Why Epic
The point is to show that you identify with the company's mission.Epic's business is to be a healthcare information system, and keywords can be centered around impact on healthcare, improving patient outcomes, large-scale system reliability.
It was mentioned in the participant feedback that the answers were more convincing if they knew about Epic's programs (e.g., MyChart, EpicCare) ahead of time.
Sample Answer Ideas:
"I want to work at Epic because it has a unique impact on the healthcare industry. The systems you build are used by millions of patients and doctors every day. I want to be part of a team where my code can directly improve people's lives."
2. Why this position
Answers should emphasize the match between skills and job requirements rather than generalizations. For example, for the SDE position, you can emphasize problem solving, scalability, software reliability.
Participant feedback said that the interviewer would press for details, such as in which specific project you demonstrated these competencies.
3. Career Goal
Epic values long-term stability, and they want you to grow with the company, not jump ship.
Answer by saying that you want to be technical expert Or team leader, while maintaining ties with the healthcare industry.
4. Project + Challenge
This is the easiest part to expand on, and be sure to use STAR (Situation, Task, Action, Result) to organize it.
Participants' feedback mentioned that it would be most effective if the challenge part of the project could be combined with the dual difficulties of "communication + technology". For example, ambiguous requirements, poor data quality, and team communication barriers.
Sample Answer Ideas:
Situation:: "In my last project, I worked on a patient data visualization tool."
Task:: "The challenge was that the dataset was incomplete and inconsistent."
Action:: "I collaborated with the data team to define cleaning rules, built validation scripts, and set up automated error detection. "
Result:: "We reduced missing data issues by 40% and the tool was adopted by multiple departments."
No more fighting alone, peace of mind in a high-pressure process
The first time many students encounter Epic's OA, they will feel a bit panicked: many questions, time is tight, there is no test case, coupled with the pressure of the whole recording camera, it is easy to make mistakes because of nervousness. The electric interview seems simple, but in fact the interviewer will keep asking for details, if you are not fully prepared, it is easy to be asked to the shell.
we programhelp The team has accompanied many students through the Epic process and provided remote and seamless interview assistance:
The OA part can help you clear your mind at critical moments and avoid wasting precious minutes by real-time voice reminders.
We will mock in advance, provide feedback on common BQs, and even help you capture the details to make your answers more realistic and natural.
A participant gave feedback:
"Without your voice assists, I would have been absolutely stuck halfway through the third programming question. Also, the electric interview mock is very critical, and I've practiced the points that I'm going to be asked during the real interview in advance."
You really don't need to go it alone when preparing for a fast-paced, exam-packed process like the Epic.
