I applied through an employee referral. The process took 3 weeks. I interviewed at Oracle in Apr 2025
Interview
Stage 1: Initial Screening (HR/Recruiter),
Stage 2: First Technical Interview (Technical Staff Member)
Purpose: To evaluate your fundamental coding abilities, problem-solving skills, and understanding of core Java concepts. This interview will likely include a coding challenge focused on Strings (LeetCode Medium).
Java Core Concepts: The interviewer will likely ask questions to assess your understanding of fundamental Java principles:
Object-Oriented Programming (OOP): Encapsulation, Inheritance, Polymorphism, Abstraction. Be prepared to explain these concepts with examples.
Data Structures and Algorithms: Basic knowledge of common data structures (arrays, linked lists, hash maps, trees) and their time/space complexities. While the coding challenge focuses on strings, they might ask about the underlying data structures used to implement string operations.
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
