Concept Plus is seeking a Senior Database Administrator to provide networking, infrastructure, and database support services. The ideal candidate will have a minimum of 10 years of experience as an Oracle DBA and must be able to demonstrate a working knowledge of Oracle databases version 19c and higher. This role requires experience with Oracle multitenant architecture as well as other Oracle add-on components. The candidate should also possess knowledge and experience in administering databases on other DBMS platforms such as MS SQL Server, Postgres, MySQL, and other SQL-based solutions. In this position, the Senior Database Administrator will be responsible for managing various backup and recovery methods, including but not limited to datapump, RMAN, and cloning. The candidate should have experience in recovering databases due to disasters or corruption and should be adept at creating both logical and physical backups, with the knowledge to determine when to use either method. Familiarity with Linux is essential for proper navigation and minimal administration, along with experience in writing Bash scripts to monitor various aspects of all databases. The role also involves troubleshooting Oracle network issues surrounding OCI calls and listener problems, demonstrating concepts such as need to know and least privilege when configuring database access controls. The candidate should have experience with Oracle Advanced Security Option, specifically on Transparent Data Encryption, and possess in-depth knowledge of PKCS certificates, including experience with configuring and implementing certificates in Oracle wallet. Additionally, the candidate will be responsible for applying Oracle security patches and version upgrades to databases and underlying binaries, as well as the installation, configuration, and support of Oracle ORDS and APEX components. Knowledge of APEX API administrator commands for use on production systems and administering Oracle Cloud Infrastructure databases is preferred.