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Senior Backend Engineer Interview Questions

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2,041 senior backend engineer interview questions shared by candidates

Tech team interview breakdown: Section 1: 30 minutes • Introduction: Intro to Form3 and payments. • Code review: Candidate will screen share their code in an IDE of their choice. Review of the code submission, focusing on code tests, design, general code quality and any specific feedback from the code review. Section 2: 30 minutes • Networking: Discussion of network computing covering TCP/IP, HTTP and security. • Remote working: Discussion of past experiences of remote working, challenges, and benefits. • Additional questions (time permitting): Discuss cloud computing, infrastructure as code, distributed systems. Section 3: 30 minutes • Debugging exercise: Candidate will be asked to take part in a simulation and try and debug a problem with the Form3 platform encountered during an on-call shift. • CI / CD: Candidate will be asked to describe how they would build a CI/CD pipe line for their take home test submission. • Candidate questions: Candidate is given time to ask any questions they might have. • CV: General questions from their CV. • Pair programming (time permitting): Quick discussion on how pair programming works at Form3.
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Senior Backend Software Engineer

Interviewed at Form3

3.5★
Jan 12, 2022

Tech team interview breakdown: Section 1: 30 minutes • Introduction: Intro to Form3 and payments. • Code review: Candidate will screen share their code in an IDE of their choice. Review of the code submission, focusing on code tests, design, general code quality and any specific feedback from the code review. Section 2: 30 minutes • Networking: Discussion of network computing covering TCP/IP, HTTP and security. • Remote working: Discussion of past experiences of remote working, challenges, and benefits. • Additional questions (time permitting): Discuss cloud computing, infrastructure as code, distributed systems. Section 3: 30 minutes • Debugging exercise: Candidate will be asked to take part in a simulation and try and debug a problem with the Form3 platform encountered during an on-call shift. • CI / CD: Candidate will be asked to describe how they would build a CI/CD pipe line for their take home test submission. • Candidate questions: Candidate is given time to ask any questions they might have. • CV: General questions from their CV. • Pair programming (time permitting): Quick discussion on how pair programming works at Form3.

Could you tell us what’s pushing you to leave your current company? What are you really after in your next career move? How far are you in the process of searching for your next role? Are you ready to make your next move or are you just thinking about it? (Some context about your current situation and your expectations would help us a lot).
avatar

Senior Backend Engineer

Interviewed at Fonoa

4.4★
Feb 11, 2022

Could you tell us what’s pushing you to leave your current company? What are you really after in your next career move? How far are you in the process of searching for your next role? Are you ready to make your next move or are you just thinking about it? (Some context about your current situation and your expectations would help us a lot).

Could you tell us about a time in which you had to solve a complex problem with a simple solution? Describe the context, the situation you were in, the steps you took to deal with it and the outcome. It would be helpful if you can explain this in a way in which non-technical people can follow and understand it.
avatar

Senior Backend Engineer

Interviewed at Fonoa

4.4★
Feb 11, 2022

Could you tell us about a time in which you had to solve a complex problem with a simple solution? Describe the context, the situation you were in, the steps you took to deal with it and the outcome. It would be helpful if you can explain this in a way in which non-technical people can follow and understand it.

A coding challenge question was nice. I received a SpringBoot application with maven project. It also had integration tests. The question was to create 3 Rest endpoints with straight forward logic. The challenging part is not to implement the requirements but to implement it in a codility environment. Codility is the worst platform to implement a modular application, it works for small algorithmic problems. Despite I was able to run full problem in my IDE (Which they also recommend), I was not able to detect why it failed to compile and run on the codility. It is difficult to implement, copy to codility and make it run on codility within 2 hrs.
avatar

Senior Backend Engineer

Interviewed at Scalable Capital

3.7★
Apr 28, 2025

A coding challenge question was nice. I received a SpringBoot application with maven project. It also had integration tests. The question was to create 3 Rest endpoints with straight forward logic. The challenging part is not to implement the requirements but to implement it in a codility environment. Codility is the worst platform to implement a modular application, it works for small algorithmic problems. Despite I was able to run full problem in my IDE (Which they also recommend), I was not able to detect why it failed to compile and run on the codility. It is difficult to implement, copy to codility and make it run on codility within 2 hrs.

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