Senior Java Backend Engineer (Oracle & PL/SQL

Java Oracle PL/SQL

Senior Java Backend DeveloperOracle PL/SQL),
Oracle

Oracle PL/SQL

Stored ProcedurePackageFunctionTrigger

SQL Production Environment
MySQLPostgreSQL

SQL Server Oracle PL/SQL
5

Java
3

Oracle
Production Environment

Java

Java SE / Java EE
OOP
MVC
Spring FrameworkSpring Boot / Spring MVC
MyBatis / iBatis
RESTful API
Multi-threading
Oracle
Oracle Database
PL/SQL
Stored Procedure
Package
Function
Trigger
SQL Performance TuningSQL
Query OptimizationSQL
Git

SVN

OceanBase
MongoDB
ClickHouse

AI

CursorClaude CodeGitHub Copilot
System Integration

Java
Oracle

PL/SQLStored ProcedurePackageFunction

Trigger

SQL
RESTful API
MongoDBClickHouse

Senior Java Backend Developer (Oracle PL/SQL)

Position Overview

We are looking for an experienced
Senior Java Backend Developer (Oracle PL/SQL)

to design, develop, and maintain enterprise backend applications, database business logic, and high-performance systems.
This role is primarily focused on Oracle database development.

The successful candidate must have strong hands-on experience in Oracle PL/SQL development, including Stored Procedures, Packages, Functions, Triggers, and SQL performance tuning. You will also be involved in building scalable backend services, optimizing enterprise applications, and supporting large-scale production systems.
Candidates whose primary experience is limited to MySQL, PostgreSQL, or SQL Server without Oracle PL/SQL development experience are unlikely to be suitable for this role.
Must-Have Requirements

Applicants

must meet all

of the following requirements.
Experience

Minimum

5 years of Java Backend Development

experience.
Minimum

3 years of Oracle Database Development

experience.
Experience developing, maintaining, and supporting enterprise applications in a Production Environment.
Experience working on large-scale enterprise systems.
Java Backend Development

Strong proficiency in Java SE / Java EE.
Solid understanding of Object-Oriented Programming (OOP).
Good knowledge of MVC architecture.
Hands-on experience with Spring Framework (Spring Boot / Spring MVC).
Experience with MyBatis / iBatis.
Experience developing RESTful APIs.
Experience with multi-threaded application development.
Oracle Database (Core Requirement)

Hands-on experience with:
Oracle Database
PL/SQL
Stored Procedures
Packages
Functions
Triggers
SQL Performance Tuning
SQL Query Optimization
Other Technical Skills

Experience with Git or SVN version control.
Strong troubleshooting, debugging, and performance optimization skills.
Preferred Qualifications

Candidates with the following experience will have an advantage:
OceanBase database
MongoDB
ClickHouse
Big Data platforms
AI-assisted development tools (e.g. Cursor, Claude Code, GitHub Copilot)
System integration experience
Project management experience
Team leadership experience
Key Responsibilities

Design, develop, test, deploy, and maintain enterprise Java backend applications.
Develop Oracle database business logic using PL/SQL, including Stored Procedures, Packages, Functions, and Triggers.
Analyse, troubleshoot, and resolve application, database, and performance issues.
Optimise SQL queries and database performance to improve system efficiency.
Develop and maintain RESTful APIs and support system integration.
Support large-scale data processing using technologies such as MongoDB and ClickHouse where applicable.
Maintain and optimise production systems to ensure performance, stability, and scalability.
Collaborate with cross-functional teams to deliver high-quality software solutions.
Perform other related technical duties as assigned.
Qualifications

Bachelor's Degree in Computer Science, Information Technology, Software Engineering, or a related discipline.
Strong analytical and problem-solving skills.
Detail-oriented with a strong sense of ownership and accountability.
Able to work independently and collaborate effectively in a team environment.
Language Requirements

Good written and spoken English.
Mandarin is preferred to support communication with Mandarin-speaking clients, users, and business partners.