Senior Backend Engineer Interview Questions

2,786 senior backend engineer interview questions shared by candidates

One key question during the interview was a real-world scenario involving query problem-solving. They presented a practical challenge related to the role and asked how I would approach it, ensuring I had hands-on experience and the ability to think critically under real conditions. It was a great way to assess my problem-solving skills and expertise.
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Senior Backend Engineer

Interviewed at Pelcro

4.8
Mar 12, 2025

One key question during the interview was a real-world scenario involving query problem-solving. They presented a practical challenge related to the role and asked how I would approach it, ensuring I had hands-on experience and the ability to think critically under real conditions. It was a great way to assess my problem-solving skills and expertise.

Preguntas sobre annotations de spring. Patrones de diseño Preguntas de lógica de códigos/soluciones a implementar dado un contexto que te decía en el momento. Cuáles eran los proyectos o como venías trabajando.
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Senior Backend Developer

Interviewed at Making Sense

3.7
Sep 17, 2022

Preguntas sobre annotations de spring. Patrones de diseño Preguntas de lógica de códigos/soluciones a implementar dado un contexto que te decía en el momento. Cuáles eran los proyectos o como venías trabajando.

What are the design patterns I used? Did I do deployments in my earlier experiences? Why this approach to the problem was chosen over another? ( given a scenario) Software testing fundamentals and principles. Github Action and CI/CD pipeline. Kubernetes architecture and deployments. Hexagonal Software Architecture
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Senior Backend Developer

Interviewed at Notch

3.5
Oct 3, 2021

What are the design patterns I used? Did I do deployments in my earlier experiences? Why this approach to the problem was chosen over another? ( given a scenario) Software testing fundamentals and principles. Github Action and CI/CD pipeline. Kubernetes architecture and deployments. Hexagonal Software Architecture

I'll write down some sample behavior questions they provided. Also, they highly recommend to answer them with STAR method. Scope of Influence: Build Trust, Always be Growing, Be Bold, Disagree and Commit - Disagreeing with your peers or Manager - Have you ever not been able to meet a commitment with a customer/teammate? - How do you look for possible roadblocks within a team setting while working on a project? Do you look 2-4 steps ahead while focusing on your current tasks? Deliver Results: Customer Focus, Growth, Ownership, and Bias for Action - Deal with a difficult customer - What type of obstacles have you overcome during a project or when working towards an important goal? - Have you ever failed before? If so, what was the failure? What did you learn? - Have you taken on something outside of your normal day to day responsibilities?
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Senior Backend Engineer

Interviewed at Mapbox

3.5
Dec 10, 2022

I'll write down some sample behavior questions they provided. Also, they highly recommend to answer them with STAR method. Scope of Influence: Build Trust, Always be Growing, Be Bold, Disagree and Commit - Disagreeing with your peers or Manager - Have you ever not been able to meet a commitment with a customer/teammate? - How do you look for possible roadblocks within a team setting while working on a project? Do you look 2-4 steps ahead while focusing on your current tasks? Deliver Results: Customer Focus, Growth, Ownership, and Bias for Action - Deal with a difficult customer - What type of obstacles have you overcome during a project or when working towards an important goal? - Have you ever failed before? If so, what was the failure? What did you learn? - Have you taken on something outside of your normal day to day responsibilities?

Onsite: 1) Find if left half of a binary tree is mirror image of right half. 2) Theres a text string available that represents a sentence but the spaces between words are missing. Given a dictionary of valid words, recreate sentence with spaces in the right place. (standard question from book 'Cracking the coding interview'. 3) System design question about how to design an ad-server. get and put for ad exchange and keeping track of clicks on an ad. 4) Case study. Gave me a scenario where one of their ad servers is down and users are not seeing ads, given server login access how would you debug.
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Senior Backend Engineer

Interviewed at Spotify

4
Sep 7, 2017

Onsite: 1) Find if left half of a binary tree is mirror image of right half. 2) Theres a text string available that represents a sentence but the spaces between words are missing. Given a dictionary of valid words, recreate sentence with spaces in the right place. (standard question from book 'Cracking the coding interview'. 3) System design question about how to design an ad-server. get and put for ad exchange and keeping track of clicks on an ad. 4) Case study. Gave me a scenario where one of their ad servers is down and users are not seeing ads, given server login access how would you debug.

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