Describe a time when you had to learn something quickly to complete a project

Situation: Two weeks before our mobile app demo, our React Native developer had to leave. Task: As the web developer with no mobile experience, I needed to take over the mobile frontend. Action: I spent 2 days on React Native fundamentals, set up daily check-ins with a friend who had experience, and focused on patterns over syntax. Result: We demoed on time with all core features working.

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Coherent Intern Firmware Engineer

Q: Two Sum - Given an array of integers and a target, return indices of the two numbers that add up to target

Practice question for Coherent Intern Firmware Engineer interview focusing on Arrays & Hashing.

Q: Merge Two Sorted Lists - Merge two sorted linked lists into one sorted list

Practice question for Coherent Intern Firmware Engineer interview focusing on Linked Lists.

Q: Binary Tree Vertical Order Traversal - Return vertical order traversal of nodes

Practice question for Coherent Intern Firmware Engineer interview focusing on Trees.

Q: 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.

Remote·182 interview reviews·Hard difficulty

80% positive68% applied onlinePosted 0d [Apply here](https://hcwp.fa.us2.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_1/job/2010917?utm_source=Simplify&ref=Simplify)

Difficulty

3.5/ 5

Experience

Positive80%

Neutral9%

Negative11%

Interview Source

Applied online68%

Recruiter19%

Referral12%

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Intern Firmware Engineer Interview Reviews

182

Intern Firmware Engineer Candidate

Sep 16, 2026 · New York, NY

✓ OfferPositiveEasy

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

“Two Sum - Given an array of integers and a target, return indices of the two numbers that add up to target”

Arrays & HashingPractice this →

Intern Firmware Engineer Candidate

Feb 3, 2026 · Menlo Park, CA

✗ No offerPositiveAverage

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 QuestionEasy

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

Linked ListsPractice this →

Intern Firmware Engineer Candidate

Jan 22, 2026 · Menlo Park, CA

✗ No offerNegativeDifficult

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 QuestionMedium

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

Problem SolvingBehavioralPractice this →

Intern Firmware Engineer Candidate

Dec 20, 2025 · New York, NY

✗ No offerPositiveAverage

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

“Binary Tree Vertical Order Traversal - Return vertical order traversal of nodes”

TreesPractice this →

Intern Firmware Engineer Candidate

Jan 24, 2026 · San Francisco, CA

✗ No offerNeutralEasy

Interview Question

“Word Ladder — BFS/graph traversal”

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About This Role

Focus Areas

Software DevelopmentSystem DesignBehavioral

Key Skills

C/C++Embedded SystemsHardware IntegrationReal-time Systems

Details

CompanyCoherent

LocationRemote

Posted0d [Apply here](https://hcwp.fa.us2.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_1/job/2010917?utm_source=Simplify&ref=Simplify)

TierEnterprise

Frequently Asked Questions

How hard is it to get hired as a Intern Firmware Engineer at Coherent?

The interview difficulty is rated 3.5/5 by candidates. 80% report a positive experience. Focus on Software Development, System Design, Behavioral to improve your chances.

How long does the Coherent Intern Firmware Engineer 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. 68% of candidates applied online.

What questions are asked in a Coherent Intern Firmware Engineer 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.

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