How hard is the Coherent Intern - AI and Machine Learning interview?

The Coherent Intern - AI and Machine Learning interview is rated Medium difficulty. The Coherent Intern - AI and Machine Learning 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 Coherent Intern - AI and Machine Learning 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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Coherent Intern - AI and Machine Learning

Tarentum, PA·103 interview reviews·Hard difficulty

61% positive49% applied onlinePosted today

Difficulty

3.9/ 5

Experience

Positive61%

Neutral34%

Negative5%

Interview Source

Applied online49%

Recruiter17%

Referral20%

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Intern - AI and Machine Learning Interview Reviews

103

Intern - AI and Machine Learning Candidate

Nov 26, 2026 · Remote

✓ OfferNeutralEasy

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 QuestionHard

“Design Web Crawler - Design a distributed web crawling system”

System Design

Intern - AI and Machine Learning Candidate

Feb 15, 2026 · Remote

✗ No offerNeutralAverage

CodeSignal online assessment, then one 45-minute interview. Interviewer was friendly and helpful. 2 leetcode questions then 5 minutes for any questions I had. Got my results in a few days.

Interview QuestionMedium

“Design Rate Limiter - Implement an API rate limiting system”

System Design

Intern - AI and Machine Learning Candidate

Mar 26, 2026 · Austin, TX

✗ No offerPositiveAverage

CodeSignal online assessment, then one 45-minute interview. Interviewer was friendly and helpful. 2 leetcode questions then 5 minutes for any questions I had. Got my results in a few days.

Interview QuestionMedium

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

Decision MakingBehavioral

Intern - AI and Machine Learning Candidate

Mar 10, 2025 · Seattle, WA

✗ No offerNegativeAverage

Online assessment was difficult, but the final round technical was just 2 leetcode questions. Studying tagged questions and general leetcode helps a lot. Interviewer was friendly and wanted me to succeed.

Interview QuestionMedium

“Longest Substring Without Repeating Characters - Find the length of the longest substring without repeating characters”

Sliding Window

Intern - AI and Machine Learning Candidate

Feb 10, 2026 · Menlo Park, CA

✓ OfferNegativeAverage

The process was pretty straightforward. It started with an online assessment, followed by a phone screen, and concluded with a final interview round that had two LeetCode medium difficulty problems.

Interview Question

“LeetCode medium — Valid Sudoku / Binary Tree Level Order Traversal”

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About This Role

Focus Areas

Machine LearningPythonStatistics

Key Skills

Machine LearningPythonStatisticsAlgorithms

Details

CompanyCoherent

LocationTarentum, PA

Postedtoday

TierEnterprise

Frequently Asked Questions

How hard is it to get hired as a Intern - AI and Machine Learning at Coherent?

The interview difficulty is rated 3.9/5 by candidates. 61% report a positive experience. Focus on Machine Learning, Python, Statistics to improve your chances.

How long does the Coherent Intern - AI and Machine Learning 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. 49% of candidates applied online.

What questions are asked in a Coherent Intern - AI and Machine Learning 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.