Senior Java Software Engineer (Oracle)

About the role

Dev.Pro, a US-based software development company working with independent contractors worldwide, invites a Senior Java Software Engineer with strong Oracle expertise to join a large-scale platform modernization initiative. The project consolidates multiple platforms around Oracle, designs the database schema for a new application and supports a future MySQL-to-Oracle migration. The role combines hands-on Java backend development with advanced database engineering and collaboration with cross-functional teams.

Key responsibilities

• Design, develop and maintain scalable Java backend applications.
• Design the Oracle database storage schema for a new application.
• Support the planning and execution of a future MySQL-to-Oracle migration.
• Develop and optimize SQL queries to improve database performance.
• Troubleshoot complex application and database issues in production.
• Support production database operations and implement changes with minimal downtime.
• Write and maintain unit tests with JUnit and Mockito.
• Collaborate with cross-functional teams on technical design and implementation, and create technical documentation.

Required profile

• 5+ years of experience building, debugging and optimizing scalable Java backend applications.
• Hands-on Oracle development in production, with knowledge of indexing, query optimization, partitioning, replication and transaction behavior.
• Production database operations experience (backup/restore, high availability, disaster recovery, failover).
• Ability to work independently, take ownership and communicate well with Scrum teams; upper-intermediate English.

Required skills

• Java 8-17, object-oriented design, design patterns, multithreading and concurrency.
• Advanced SQL and performance troubleshooting.
• Unit testing with JUnit and Mockito.
• Cloud platforms (preferably GCP) and Kubernetes or similar orchestration tools.
• Linux/Unix and scripting in Bash, Python or similar.
• Desirable: Oracle DBA experience, Oracle version upgrades or migrations, Oracle certification, Groovy, Gradle and CI/CD pipelines.

Application process: submit a CV in English, then an introductory call with a recruiter, followed by an interview and signing of the contract.