I applied via their website, and HR then contacted me via email and sent me a test link from Qualified. I completed the test in Python, and was able to answer all the questions in less than an hour with proper structure and readability.

I emailed the HR who sent me the link about my test completion. The very next day, I received a reply stating that I didn't perform well in the test. I was surprised, thinking, "How is this even possible?" I had answered all the questions correctly, and the structure was good. It seemed impossible.

However, I still considered that I might be missing something. So, I emailed HR back, requesting feedback on what exactly went wrong with my code and why I wasn't selected. She replied, "All I can tell is your code doesn't meet our standards," and that was it.

I insisted again, mentioning my strong coding background and pending offers from several other reputable companies as testimonials to my skills. I pressed her to at least tell me the specific reason why my code was deemed inadequate. I wanted to know if tests failed, if the design or structure was poor, or if I missed a corner case.

However, she stated that Klarna's policy does not allow them to provide feedback.

I started feeling something was fishy about the process. I do not believe they have the level of transparency I would expect from a professional organization. Receiving feedback after a coding test, after insisting multiple times, should be a candidate's right. Furthermore, HR representatives embody a company's image and could have communicated more professionally.

I am not an EU citizen. Perhaps that was the actual reason; who knows! I asked when I could reapply, and she mentioned after 12 months. I simply said thanks and goodbye. I won't be waiting 12 months for Klarna. Lol.

All the best, Team Klarna. However, I would suggest not treating other candidates this way; it doesn't look good, honestly. :)

Evaluate a postfix expression.

Other two were super easy coding questions. I don't even remember them.