Database Administrator (Oracle, MongoDB, Cassandra, MySQL) at Bluechip Technologies Limited

Job Description

• As part of our growth strategy, we are seeking an experienced and versatile Database Administrator (DBA) with expertise across Oracle, MongoDB, Cassandra, and MySQL to join our dynamic team. 

Role Overview 

• We are looking for a results-driven and detail-oriented Database Administrator to oversee the installation, configuration, performance, and security of our enterprise-grade databases.
• The ideal candidate will bring extensive experience in relational and non-relational database technologies and a solid track record of implementing, maintaining, and optimizing critical data systems in high-availability environments. 

Key Responsibilities
Oracle Database Administration:

• Install, configure, and maintain Oracle 10g/11g/12c/19c in single-instance and clustered environments. 
• Manage Real Application Clusters (RAC), Data Guard, Log Shipping, and Cloning. 
• Execute backup and recovery procedures using RMAN. 
• Monitor and optimize database performance; troubleshoot bottlenecks. 
• Apply security patches, upgrades, and manage database migrations. 
• Ensure compliance with Oracle licensing and security standards. 

MongoDB & MySQL Administration:

• Deploy, configure, and support MongoDB and MySQL databases in production and staging environments. 
• Implement replication, sharding, clustering, and indexing strategies. 
• Optimize performance using profiling tools and query tuning techniques. 
• Design NoSQL schema models in MongoDB for scalable applications. 
• Perform backup and restore using MongoDB Ops Manager and MySQL tools. 

Cassandra Administration (Optional but Preferred):

• Install and maintain Cassandra clusters. 
• Manage high-volume writes and reads, ensuring horizontal scalability. 
• Configure replication, consistency levels, and monitor cluster health. 

General DBA Functions:

• Develop and implement robust backup, restore, and disaster recovery strategies. 
• Conduct routine health checks and failover drills. 
• Handle P1/P2 incident escalations and change management processes. 
• Collaborate with development and infrastructure teams for data modeling and integration. 
• Ensure accurate documentation of configurations and processes. 

Qualifications & Requirements 

• Bachelor’s Degree in Computer Science, Information Technology, or related discipline. 
• Minimum of 7 years hands-on experience managing Oracle, MongoDB, Cassandra, and MySQL databases. 
• Strong expertise in: 
• Oracle RAC, RMAN, and performance tuning. 
• MongoDB and MySQL replication, clustering, and schema design. 
• NoSQL performance optimization and disaster recovery planning. 
• Proficiency in SQL, PL/SQL, and NoSQL query languages. 
• Experience with cloud platforms (AWS, Azure, GCP) is highly desirable. 
• Certifications such as: 
  • Oracle Certified Professional (OCP) 
  • MongoDB Certified DBA 
  • MySQL Certified DBA; are a strong plus. 
• Excellent analytical, troubleshooting, and documentation skills. 
• Strong communication and teamwork abilities.