The process involved several consecutive steps:

• Received a logic test where the task was to find the next pattern in a series.
• Received a coding challenge to analyze a very large dataset, with data visualization as part of the challenge.
• Interview with the director of the department.
• Interview with the manager of the team.

Subsequently, I traveled to their office in Berlin for further steps:

• Performed the logic test again.
• Behavioral interview with the manager.
• Technical interview with another engineer and the head of another department.
• Technical interview with another head of department.
• Technical interview with the manager of the department.
• Sent my Master's and Bachelor's degrees and transcripts.

After waiting for a week, I received a negative response stating that my university is not recognized in Germany. I am unsure how this conclusion was reached, as my university is indeed listed as a recognized institution. I informed them of this discrepancy but received no response.

Following this, I received another offer and informed them of my need for an urgent response. I suspect they did not appreciate this, as they responded within 5 minutes stating they would not be moving forward with my application.

Having invested over three full days in challenges, interviews, travel, and document preparation, and receiving positive feedback, I had expected them to be more careful and responsive. Overall, my experience with the process was negative due to its length and tiresome nature. Thankfully, I received another offer to move forward with.

Messaging concepts

Big O notation

Designing APIs