Prepfully logo
  • Browse Coaches
  • Login
BetaTry Out Our New AI Mock Interviewer – Your Smartest Way to Ace Any Interview!Try Our AI Mock Interviewer
Try Now
NewRegister as a coach and get a $100 bonus on your first completed session if you're on the Prepfully Request for Coaches list.Coach $100 Bonus
Read More
LimitedSummer Deal: Heavy discounts on all Prepfully sessions.Summer Deal: Discounts
Book Now

Your AI Wingman for your next interview

The most comprehensive bank Interview Answer Review tooling available online.

Cutting-edge AI technology meets personalized feedback. Improve your interview answers with insightful guidance provided by a model trained against more than a million human-labelled interview answers.
  • Company rubrics
  • Role-level optimisations
  • Trained on 1mil+ answers
Behavioral
2 years ago
Where did you face a challenge in a previous duty where you had a great deal of responsibility?
Backend EngineerProduct ManagerSoftware EngineerTechnical Program Manager

CodeSignal

MyGlamm

HubSpot

+7

In my role leading the launch of that new customer onboarding system, the pressure was really on. We had that tight three-month window and a lean team to build something that would be the first impression for all our new users. One specific hurdle we faced was integrating our legacy customer database with this brand-new system. The data structures were quite different, and initially, the data migration process was proving to be much slower and more error-prone than anticipated. This threatened to push our launch date.

To tackle this head-on, I didn't just delegate. I dove into the technical details with the lead engineer. We mapped out the data fields meticulously, identified the key transformation rules needed, and actually prototyped a more efficient data migration script using Python. This allowed us to automate a significant portion of the process that was previously manual.

Furthermore, to ensure we were building the right thing quickly, we implemented very short feedback loops. We'd build a small piece of the onboarding flow, get immediate feedback from a small group of internal users, and iterate based on their input. For example, early on, users found a particular step in the registration process confusing. Based on their feedback, we completely redesigned that screen within a couple of days, leading to a much smoother experience.

By getting into the technical weeds to optimize the data migration and by relentlessly focusing on user feedback through rapid iterations, we not only overcame the risk of a delayed launch but also delivered an onboarding experience that was significantly more user-friendly than initially envisioned. It was incredibly rewarding to see new customers move through the system so smoothly right from day one. That success really underscored the power of combining technical problem-solving with a user-centric approach

Get answer reviewed by AI
2 years ago
Behavioral
2 years ago
How did you handle a task where you had a deadline and couldn't meet it?
Backend EngineerTechnical Program ManagerSoftware EngineerML Engineering Manager

CodeSignal

Decathlon

NVIDIA

In the Meraki integration project, the supply chain process required significant optimization of the entire flow. To achieve this, most of the shipping-related process needed to be modified. However, the team lacked sufficient time to complete the work because the planned use of an adapter did not work, requiring me to redesign the flow.

With limited time remaining before system integration testing (SIT), the cross-functional teams and other tracks were ready to test their code, and management was unwilling to postpone SIT and Cycle 1 testing. Since there was an additional round of SIT and Cycle 2 testing planned, I decided to proceed with the changes that the team had already completed. We migrated the completed code to the test instance and communicated that only Phase 1 of the changes would be released initially, while the remaining changes would be delivered during Cycle 2 testing.

I ensured the Phase 1 delivery was designed to avoid impacting the end-to-end flow, allowing the other teams to proceed with testing their portions of the code. This approach ensured that other teams' deadlines were not affected. I also informed the cross-functional teams that the OTM and GTM changes were completed, and the remaining shipping-related code optimization would be delivered before Cycle 2 testing, along with the next round of SIT.

By taking this approach, I ensured that complete testing was not impacted and that the project stayed on track.

Get answer reviewed by AI
2 years ago
Behavioral
2 years ago
Please share an experience where you had to manage a conflict.
Backend EngineerTechnical Program ManagerSoftware EngineerProduct Manager

CodeSignal

Jabil Circuit Logo

Jabil Circuit

Zola Logo

Zola

+3

I’m my current role, during a core-team meeting I noticed conflicts between 2 team members, the MM and the EE. They were debating about why to include one component in the official BOM and discarding another one.

To understand their perspectives, I spoke with them separately in a friendly environment. The MM was frustrated because the EE didn’t provide any data or argument to discard the component that the MM suggested. This component had the same performance, was pin to pin compatible, and cheaper. On the other hand the EE explained he had bad experiences in the past with the component suggested by the MM and he refused to validate and qualify it to do not waste his time.

So… After being clear about the situation, I brought them together for a discussion and I emphasize to focus on the issue, not in personal discrepancies. Do, during the meeting, I encouraged both to consider the Project requirements, customers need and I worked with them brainstorming session.

Then, they agreed to meet with other stakeholders to get their inputs about these 2 components, they commit on a validation plan including both components. The one suggested by the EE as POR and the one suggested by the MM as alternate. They also agree to allocate 60% of the mass production volume to the EE component and 40% to the component suggested by the MM.

From my side, to ensure progress, I scheduled follow-up meetings with them to monitor their collaboration and for sure, I offered my support. Finally, both components are currently part of the product official BOM and these 2 guys improved their working relationship and communication.

Get answer reviewed by AI
2 years ago
Behavioral
2 years ago
Would you mind sharing with me a time when you failed badly and what you learned from that experience?
Backend EngineerProduct ManagerTechnical Program ManagerSoftware Engineer

CodeSignal

JoyTunes Logo

JoyTunes

N26 Logo

N26

+13

In my early days as Program Manager, I managed a project for one of our main customers. This project consisted in a touch screen device to control a Large format printer for HP. The project had a very tight schedule and I promised to deliver the first EVT units in a certain date.

T: As PM, it was my responsibility to coordinate a cross-functional team to deliver the program on time, within budget, and in line with the scope agreed with our customer.

A: When I started to dive deep into the project and analyze the technical details, I realized that meeting the original delivery timeline was not feasible. So, I immediately met the core team to develop a new and realistic schedule to mitigate the issue. To ensure better alignment, I implemented daily opening and closing meetings with the team to monitor activities and prevent task duplication between cross-functional teams. Two key factors contributed to the milestone delay: a delay in component deliveries and one mistake on my part—I didn’t include in my schedule the LT for one of the Reliability tests required by Engineering before the Ok2ship milestone.

R: I highlighted the issue to my manager and shared with him the root cause of the problem and the new plan. Then, we reached the customer together to explain the situation and kept working together on the new committed schedule.

This experience taught me valuable lessons. Now, I always build buffer time into my project schedules and work more closely with core team members to anticipate potential risks. However, the most important lesson I learned was the value of honesty and proactive communication—raising concerns early is crucial to success.

Get answer reviewed by AI
2 years ago
Behavioral
2 years ago
Describe an occasion when you took ownership
Backend EngineerTechnical Program ManagerSoftware EngineerProduct Manager

CodeSignal

ApplyBoard Logo

ApplyBoard

Naspers Logo

Naspers

+11

At my current job one of our biggest customer raised the  issue they were facing in our notification service. The issue was they were not receiving any notifications from our system on their new infrastructure. Their production infra was working fine.

I reviewed their configuration and everything was looking fine at the same time we hadn't done any changes to on our end which could cause this issue. Since their contract was up for renewal the issue, we needed quick resolution. I setup a live debugging session with customer to understand the issue in detail and their new infrastructure. After the first call it was clear that the issue was happening during https handshake or at network layer. To keep the momentum going I setup recurring call with with them and assured them that we are treating this as a high priority. On the next call I involved our security expert and SRE team for further debugging. However the issue not futher progress was made, at this point I insisted SRE team that we contact Azure support to understand if there is any issue at the tcp layer. Azure team looked at the turned on debug logs and found that our network was default MTU (maximum transmission unit) was higher than customers network MTU and customer network was dropping packets.

Finally I worked with SRE team to lower our MTU to match the customer configuration and ran tests. After the config change issue was resolved, our customer confirmed that they could see the notifications. This was really difficult issue I had ran across but I worked with various teams to get to the bottom of it and delivered results to customers satisfaction.

Get answer reviewed by AI
2 years ago
Behavioral
2 years ago
In what ways are your experiences aligned with CodeSignal's values.
Backend Engineer

CodeSignal

Get answer reviewed by AI
2 years ago
Behavioral
2 years ago
If you could make CodeSignal better - what would you change?
Backend Engineer

CodeSignal

Get answer reviewed by AI
2 years ago
Behavioral
2 years ago
I'd like to know more about a community you are passionate about. If you could contribute, what would you do?
Backend EngineerProduct ManagerTechnical Program ManagerSoftware Engineer

CodeSignal

eBay Logo

eBay

GlobalBees Logo

GlobalBees

I am pretty passionate about Reddit. In a world where media is biased and polarized, Reddit threads gives me a sense of how local communities view the world. It helps me get grounded in reality of what different cadres of people are thinking by browsing different communities. Reddit is very engaging, as in, you can comment and instantly receive feedback. While there is a lot of "internet hate" and "misinformation" in Reddit communities and threads as well, looking at a wider spectrum of communities within Reddit, especially the differing ones, helps you form a less polarized and biased opinion. I prefer contributing by asking open-ended questions and if I have an opinion, posting it respectfully as a question. I also respond to scientific minded questions that I have qualifications to answer. By selectively responding and answering questions with some due diligence, I keep the communities I am a part of thriving and truth-based.

Get answer reviewed by AI
2 years ago
Behavioral
2 years ago
Tell me about your background in a high-level manner. What is your most relevant experience for CodeSignal
Backend Engineer

CodeSignal

Get answer reviewed by AI
2 years ago
Behavioral
2 years ago
Within 1 minute, explain your work experience
Backend EngineerProgram ManagerFrontend EngineerFull Stack Software Engineer

CodeSignal

Epic Games Logo

Epic Games

New Relic Logo

New Relic

+17

בתקופת התיכון התנדבתי בבית ספר לחינוך מיוחד בשם "אל-נור". בחרתי להתנדב שם בעקבות חוויה אישית עם קרוב משפחה, שלימדה אותי עד כמה חשוב להעניק תשומת לב ותמיכה מתאימה לתלמידים עם צרכים מיוחדים. בנוסף, זהו בית ספר קטן עם צוות מצומצם, כך שראיתי בכך הזדמנות לקחת חלק משמעותי ולהשפיע. הגעתי להתנדבות פעם בשבוע, עזרתי לתלמידים באופן אישי, העברתי תכנים לימודיים דרך משחקים בקבוצות יחד עם המורים, וסייעתי בארגון וסידור הכיתה אחרי שהתלמידים הלכו לישון. לפני שהתחלתי, חששתי שלא אצליח להתחבר לתלמידים או להיות מספיק מעורב. בנוסף, לכל תלמיד היו צרכים שונים, ולכן היה עליי ללמוד מהמורים כיצד לגשת לכל אחד – אם הוא על הספקטרום האוטיסטי, עם תסמונת דאון, או עם צרכים מיוחדים אחרים. בהתחלה צפיתי במורים, התייעצתי איתם ולמדתי איך הם ניגשים לכל תלמיד לפי צרכיו, וזה נתן לי ביטחון להתחיל לפתח קשרים בעצמי לשמחתי, עם הזמן גיליתי שרובם קיבלו אותי בשמחה, למדתי לקרוא סימנים לא מילוליים, להבין מה גורם להם להרגיש בנוח, ולהתאים את הגישה שלי כך שירגישו נתמכים ומובנים. נהניתי מהאינטראקציה איתם, וזכיתי בתחושת סיפוק עמוקה

Get answer reviewed by AI
2 years ago

Try Free AI Interview

Question of the week

We'll send you a weekly question to practice for:

Showing 31 to 40 of 66 results

Previous23456Next

*All interview questions are submitted by recent CodeSignal Backend Engineer candidates, labelled and categorized by Prepfully, and then published after being verified by Backend Engineers at CodeSignal.

  • Twitter Data Engineer Interview Guide
  • Google Data Engineer Interview Guide
  • Meta Data Engineer Interview Guide
  • Walmart Data Engineer Interview Guide
  • Amazon Data Engineer Interview Guide
  • Apple Data Scientist Interview Guide
  • Company
  • FAQs
  • Contact Us
  • Become An Expert
  • Services
  • Practice Interviews
  • Interview Guides
  • Interview Questions
  • Watch Recorded Interviews
  • Gift sessions
  • AI Interview
  • Social
  • Twitter
  • Facebook
  • LinkedIn
  • YouTube
  • Legal
  • Terms & Conditions
  • Privacy Policy
  • Illustrations by Storyset

© 2025 Prepfully. All rights reserved.

Prepfully logo

Please log in to view more questions.

Not a member yet? Sign up for free.