I interviewed at Open Technology Services (Athens, Athens, Attica)
Interview
I recently went through the interview process for a Java Developer position. The process started with a pre-interview assessment focused on core Java concepts and problem-solving. After passing that stage, I was invited to an on-site interview which included live coding exercises and technical discussions around Java, APIs, and general software engineering practices.
The interviewers were professional and the process itself was organized. Communication during the recruitment stages was generally clear.
The company later offered me a 6-month contract with a net salary of around €900/month. While I appreciated receiving an offer and the opportunity to continue in the process, I personally felt that the compensation did not fully match the expectations and technical requirements of the role. In the end, I was not selected to move forward after the final evaluation.
Interview questions [1]
Question 1
They asked follow-up questions about optimization, readability, and how I would improve the implementation of the assessment in a real production environment.
I applied online. The process took 1 week. I interviewed at Open Technology Services in Sept 2025
Interview
It consisted of 1 personality test, 1 technical online test and a project implementation of an application all within 3 days period. The next part was an on-site interview at the offices with 1 hr and a project manager. I presented myself, my project and we discussed about my previous work. There were also technical questions about Java.
Interview questions [1]
Question 1
What is the difference between a composite object and inherited
What is the Left Join
What is a Singleton
equals vs ==
I interviewed at Open Technology Services (Thessaloníki, Western Macedonia)
Interview
The whole process was extremely organized and really fair. The HR employees where friendly and incredibly consistent with timelines and answering on time. Overall a very professional experience. Lastly, the experiential lab in the recruiting process was something new and really fun