Senior Java Developer Interview Experience - Turkey
Process
First, there was a HackerRank test of 3 questions. I solved the first and third questions correctly, but the second answer was missing a small point.
The second round was a technical interview about reviewing the HackerRank answers. I could explain and even improve my solutions on HackerRank, and I passed the technical stage.
The final round was a Leadership and Board interview where one recently promoted team lead and a higher-level executive joined. The team lead was hard to understand, and the executive was not talking much. I did what I could, but it was not a fruitful communication, and I failed at that stage.
Questions
The HackerRank test consisted of 3 questions:
- A binary search tree implementation.
- Writing a moderately complex SQL query.
- Thread synchronization.
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Interview Statistics
The following metrics were computed from 1 interview experience for the Adyen Senior Java Developer role in Turkey.
Success Rate
Adyen's interview process for their Senior Java Developer roles in Turkey is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having very negative feelings for Adyen's Senior Java Developer interview process in Turkey.
Adyen Work Experiences
- 4.0A great place to work, but there are signs of it becoming just another greedy, low-morale, poor-culture bankSoftware Engineer • Current EmployeeAmsterdam, NetherlandsNovember 13, 2025Pros: Initially, an innovative, fast-paced company driven by incredible people. Generally, a great atmosphere to work in. Offers many opportunities to learn and grow.Cons: In the last year or two, the company started really shifting the focus away from the people, the culture, and the greater impact, to pure financial results and investor satisfaction. The little perks that were available for employees, such as nice breakfast snacks, free soda fridges, and in some cases, simple respect, are vanishing. The high leadership became arrogant. A few times, they publicly implied that the employees are somehow "free riding" and that we should be very grateful to them for the amazing conditions they are giving us. In some teams, we're working severely understaffed, but the expectation is to deliver massive results. This has been emphasized in almost every internal event.
- 4.0Good Work Environment OverallSenior Software Engineer • Current EmployeeAmsterdam, North Holland, NetherlandsNovember 7, 2025Pros: Good environment to work for everyone.Cons: Nothing bad here at work.
- 1.0Not as good as it soundsEngineer • Former EmployeeAmsterdam, NetherlandsOctober 31, 2025Pros: Things could possibly change with new management with an international background.Cons: Awful place to work at. The tech stack is a joke. But worst of all, racism is the norm. You're basically treated like a slave if you're not Dutch or European. Run while you can.
