The Principal MTS (Member of Technical Staff) role at Oracle is a senior individual contributor position focused on designing, developing, and implementing complex software solutions. This role requires a deep understanding of software engineering principles, strong problem-solving skills, and the ability to mentor junior engineers. The interview process is rigorous and designed to assess technical depth, architectural thinking, and leadership potential.
Rounds·4
Timeline·~14d
Experience·8 - 15 yrs
Comp band·US$180000 - US$250000
Interview time·195 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 04 phases
01 / 04Phase 01 of 04
Weeks 1-2: DSA fundamentals and practice (LeetCode Medium/Hard).
Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, trees, graphs, hash tables, heaps, sorting, searching, dynamic programming, and graph traversal algorithms. Practice coding problems on platforms like LeetCode (Medium/Hard).
Phase 02 of 04
Weeks 3-4: System Design principles and practice.
Weeks 3-4: Dive into System Design. Study distributed systems principles, microservices architecture, API design, databases (SQL vs. NoSQL), caching, load balancing, message queues, and CAP theorem. Review common system design interview questions and practice designing systems like Twitter feed, URL shortener, etc.
Phase 03 of 04
Week 5: Behavioral and Leadership preparation (STAR method).
Week 5: Focus on Behavioral and Leadership aspects. Prepare STAR method answers for questions related to teamwork, conflict resolution, leadership, handling failure, and mentoring. Reflect on your career experiences and identify key achievements and learnings.
Phase 04 of 04
Week 6: Oracle tech, OCI, mock interviews.
Week 6: Review Oracle-specific technologies and cloud platforms (OCI). Understand Oracle's business and recent developments. Prepare questions for the interviewers. Do mock interviews to simulate the actual interview environment.
Questions
Locations
Fig · Regions — 02 locations
01 / 02Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
Data Structures And Algorithms · 60 min · Senior Software Engineer / MTS
This round focuses on your fundamental computer science knowledge. You will be presented with one or two coding problems that require you to apply data structures and algorithms. The interviewer will assess your ability to understand the problem, devise an efficient solution, write clean code, and analyze its time and space complexity. Expect follow-up questions to explore alternative approaches or optimizations.
What they look for
Evaluation
Sample questions
Given a binary tree, find the lowest common ancestor of two given nodes.
Implement a function to find the k-th largest element in an unsorted array.
Design and implement a data structure that supports insert, delete, search, and getRandom in average O(1) time.
Prep for this round
Common rejection reasons
System Design · 60 min · Senior MTS / Architect
This round assesses your ability to design complex, scalable, and reliable software systems. You'll be given an open-ended problem (e.g., design Twitter, design a URL shortener) and expected to break it down, identify requirements, propose a high-level design, and then dive deeper into specific components. The focus is on your architectural thinking, understanding of distributed systems, and ability to handle scale and availability.
What they look for
Evaluation
Sample questions
Design a system like TinyURL.
Design a news feed system for a social media platform.
How would you design a rate limiter for an API?
Prep for this round
Common rejection reasons
Behavioral & Leadership · 45 min · Hiring Manager / Principal Engineer
This round focuses on your behavioral and leadership qualities. The interviewer will ask questions about your past experiences, focusing on how you've handled challenges, worked in teams, led projects, and mentored others. The goal is to understand your working style, your ability to collaborate, and your potential to contribute to the team and company culture. Prepare to provide specific examples using the STAR method (Situation, Task, Action, Result).
What they look for
Evaluation
Sample questions
Tell me about a time you had to lead a team through a difficult technical challenge.
Describe a situation where you disagreed with a colleague or manager. How did you handle it?
How do you stay updated with new technologies and trends in software engineering?
Tell me about a project you are particularly proud of and your role in it.
Prep for this round
Common rejection reasons
Final/Executive · 30 min · Senior Manager / Director
This is typically the final round, often with a senior leader or hiring manager. The focus is on assessing your overall fit with the company culture, your long-term career goals, and your understanding of Oracle's business. It's also an opportunity for you to ask any remaining questions and get a feel for the broader organizational context. Be prepared to discuss why you want to work at Oracle and what you hope to achieve.
What they look for
Evaluation
Sample questions
Why are you interested in working at Oracle?
Where do you see yourself in 5 years?
What are your thoughts on the current trends in cloud computing and enterprise software?
Prep for this round
Common rejection reasons
DSA
Frequently reported on Oracle loops
Other guides
