I applied online. The process took 2 days. I interviewed at Oracle (Prague) in Nov 2020
Interview
They have 2 rounds. First round is with a friendly manager who will ask very simple and basic questions and quick coding task. On second round, they will gather the other managers to interview to ask questions and evaluate.
On second round, they will ask theory and some simple white board coding tasks.
Unfortunately, I wasted my time with Oracle because despite the fact that I answered almost all of their questions correctly and solved 2 coding tasks successfully out of 3, I got rejected.
One thing worth mentioning, Oracle Prague is more like a local company because almost all of their employees are locals or Czechs. Therefore, it is very highly likely that I got rejected because of my nationality. To add insult to the injury, I asked them for a feedback to know my weakness area and they sent to me an email saying that I have poor knowledge in all areas despite the fact that I've been a Dev for 3+ years and worked with international companies. This is a very unexpected behavior from a prestigious company like Oracle to have such management even if it's in Europe.
Overall, the problem with this company is not the coding questions or theory questions but they have attitude problems.
Since as a Dev, I understand the pain other Devs go through on every job search, I'm sharing this review to save other Devs' time.
If you are a Czech, then they might hire you because they act/behave like a Czech company, not like American company that hires people from all over the world and respects diversity.
Interview questions [2]
Question 1
Coding task: Determine if the String is an anagram.
Se divide en varias etapas, lo primero evalúan tu ingles, ya que es requisito para trabajar ahí, normalmente es solo una entrevista en ingles con preguntas sencillas, como cuál es tu actual trabajo, por qué quieres trabajar en Oracle, y normalmente es alguien de RH, después si pasas esa etapa viene la entrevista técnica en la que te preguntarán conceptos básicos, por ejemplo si es para java te preguntarán sobre herencia, polimorfismo, era entrevista puede ser en español o en ingles dependiendo si es alguien de aquí de México tu manager o si es del extranjero y posteriormente te pondrán problemas de algoritmos que tendrás que programar en el tiempo de la entrevista
1 technical phone screen covering basic networking and data structures, followed by a 4-round onsite loop focused heavily on Oracle Cloud Infrastructure (OCI) scale challenges. The rounds were split between low-level system execution, multi-tenant cloud architecture, and standard relational/non-relational database trade-offs. The interviewers kept drilling into network virtualization, hypervisors, and storage layers.
To prep, I needed to brush up on high-throughput cloud networking patterns and storage engine internals. I utilized Apex Interviewer to simulate full cloud infrastructure design problems.
Interview questions [1]
Question 1
Design a highly secure, multi-tenant virtual cloud network block storage migration system that allows live volume transfers between physical data centers without dropping active I/O operations.
Mostly coding question focused, and some talking about personal experience and terms. Some technical design, you could have chosen any language to complete the coding questions. Questions were simple technical concepts that person came up with at the moment.
Interview questions [1]
Question 1
Something like searching in logs using maps and filter/find data
