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

Bluechip Technologies LimitedLagos, Nigeria Networking and Tech Support
Full Time
BlueChip Technologies is a leading business application firm focused exclusively on assisting organizations in planning, designing, implementing and operating business application solutions and strategies that are central to creating and maintaining a competitive business advantage.

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. 

Method of Application

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