Principal Database Performance Engineer

Principal Database Performance Engineer

About the Team

Join Oracle's cutting-edge Data Platform team, where innovation meets scale. We build and support high-performance, enterprise-grade database solutions that power mission-critical applications for customers across the globe. Our team partners closely with Engineering, Product Management, Customer Success, and Support to solve complex database performance challenges while ensuring exceptional scalability, reliability, and availability. We thrive in a collaborative, fast-paced environment focused on delivering world-class database performance for enterprise workloads.

Role Overview

As a Principal Site Reliability Developer, you will play a critical role in improving the performance, scalability, and reliability of Oracle Database environments supporting enterprise-scale applications. This role is primarily focused on Performance Engineering, where you will analyse complex production workloads, investigate database performance issues, optimize SQL execution, and drive proactive performance improvements across large-scale Oracle environments. You will work closely with engineering teams to diagnose performance bottlenecks across SQL, PL/SQL, database architecture, and application interactions. While experience with PL/SQL development is essential, it is primarily required to optimize existing database logic and improve application performance rather than build new database applications.

Who Will Be an Ideal Fit

You are an experienced Oracle Database Performance Engineer with a passion for solving complex performance problems at scale. You have deep expertise in Oracle database internals, SQL optimization, execution plan analysis, and production performance diagnostics. You enjoy investigating challenging database issues, identifying root causes, and implementing scalable performance improvements. You possess strong analytical skills, excellent troubleshooting abilities, and a customer-first mindset.

Why You Should Accept This Role:
 

Work on Oracle Database technologies including Oracle 19c, 21c, and 23ai

Solve complex database performance challenges for enterprise customers

Influence performance improvements across mission-critical production systems

Collaborate with world-class Engineering, Product, and Customer Success teams

Gain exposure to distributed databases, large-scale workloads, and cloud-native architectures

Continuous learning opportunities in Oracle Database technologies and Performance Engineering
 

Must-Have Skills:

Strong SQL tuning and performance optimization skills (AWR/ASH, ADDM, SQL Monitor, SQL Trace, TKPROF, Performance Diagnostics, Root Cause Analysis, Explain Plans, Optimizer Hints)

Experience with partitioning, Indexing, materialized views, and analytical functions
Deep understanding of Oracle Optimizer and Cost-Based Optimization 

Hands-on experience with PL/SQL development and Oracle database internals

Expertise in Oracle versions 19c, 21c, and 23ai

Proficiency in programming languages such as C, C++, Java, or Python

Experience with relational and NoSQL databases (e.g., MongoDB, Cassandra)

Knowledge of distributed databases, sharding, and massively parallel processing systems

Experience with high availability, backup/recovery, and disaster recovery strategies

Strong troubleshooting and debugging skills across database and application layers

Ability to manage multiple priorities in a fast-paced environment

Nice-to-Have Skills:
 

Experience with internet-scale applications

Familiarity with Oracle Globally Distributed Database

Experience working with Oracle Cloud Infrastructure (OCI)

Exposure to DevOps practices and tools such as Terraform

Experience writing and publishing technical white papers