How hard is the Moderna Co-Op - Maintenance Excellence interview?

The Moderna Co-Op - Maintenance Excellence interview is rated Medium difficulty. The Moderna Co-Op - Maintenance Excellence interview typically consists of a recruiter screen followed by 1–2 technical rounds. Expect Machine Learning and Python questions.

What questions are asked in the Moderna Co-Op - Maintenance Excellence interview?

Common topics include Machine Learning, Python, Statistics, Algorithms. Describe a challenging Machine Learning problem you solved.

Describe a challenging project you worked on and how you overcame obstacles

Situation: For my internship portfolio, I decided to build a real-time chat application using technologies I'd never used before — Node.js, Socket.io, and MongoDB. Task: I had 3 weeks to complete it while managing coursework. Action: I broke the project into milestones, researched documentation, and reached out to a senior student for guidance. Result: I completed the application successfully, which helped me land my internship.

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Moderna Co-Op - Maintenance Excellence

Norwood, MA·80 interview reviews·Medium difficulty

76% positive55% applied onlinePosted today

Difficulty

2.6/ 5

Experience

Positive76%

Neutral12%

Negative12%

Interview Source

Applied online55%

Recruiter24%

Referral8%

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Co-Op - Maintenance Excellence Interview Reviews

Co-Op - Maintenance Excellence Candidate

Feb 2, 2026 · San Francisco, CA

✗ No offerNeutralDifficult

Straightforward — just 2 medium leetcode-tagged problems in 45 minutes. Very fast paced though so be aware of time. A few follow-up questions for the interviewer at the end. No behavioral questions.

Interview QuestionEasy

“Merge Two Sorted Lists - Merge two sorted linked lists into one sorted list”

Linked Lists

Co-Op - Maintenance Excellence Candidate

Sep 22, 2025 · New York, NY

✓ OfferNegativeAverage

Applied online and heard back in about a week. The technical interview was 45 minutes with two coding problems. Focus on time complexity and edge cases. The behavioral portion was brief but important.

Interview QuestionMedium

“LRU Cache - Design a data structure for Least Recently Used cache”

Design

Co-Op - Maintenance Excellence Candidate

Feb 1, 2025 · San Francisco, CA

✗ No offerNeutralAverage

Had a recruiter screen first, then a technical round focused on system design and coding. The interviewer was very professional and walked through the problem step by step. Good overall experience.

Interview QuestionMedium

“Give an example of when you had to make a difficult trade-off decision”

Decision MakingBehavioral

Co-Op - Maintenance Excellence Candidate

Mar 10, 2025 · San Francisco, CA

✓ OfferNeutralEasy

Just one round with 2 LC hards in 45 min. It wasn't too bad at all — if you've done a lot of LC you're gonna be fine. Make sure to check off your approach with the interviewer before you begin implementing.

Interview QuestionEasy

“Valid Parentheses - Determine if the input string has valid bracket pairs”

Stack

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About This Role

Focus Areas

Machine LearningPythonStatistics

Key Skills

Machine LearningPythonStatisticsAlgorithms

Details

CompanyModerna

LocationNorwood, MA

Postedtoday

TierEnterprise

Frequently Asked Questions

How hard is it to get hired as a Co-Op - Maintenance Excellence at Moderna?

The interview difficulty is rated 2.6/5 by candidates. 76% report a positive experience. Focus on Machine Learning, Python, Statistics to improve your chances.

How long does the Moderna Co-Op - Maintenance Excellence hiring process take?

The process typically takes 2–6 weeks from application to final decision, depending on the hiring cycle and team availability.

What is the interview process like?

Most candidates go through a recruiter screen, followed by technical coding rounds, and a final interview loop. 55% of candidates applied online.

What questions are asked in a Moderna Co-Op - Maintenance Excellence interview?

Common topics include data structures & algorithms (arrays, trees, graphs), system design, and behavioral questions using the STAR method. Practice with our AI mock interviewer to prepare.