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Senior Oracle Database Administrator (Mongo DB, Cassandra DB) at Bluechip Technologies Limited

Bluechip Technologies LimitedLagos, Nigeria Data and Artificial Intelligence
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.
  • 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.

What We Offer

  • Competitive and performance-driven salary package.
  • Comprehensive health, dental, and vision insurance.
  • Pension and retirement savings plan with company contributions.
  • Continuous learning and development opportunities.
  • A collaborative, innovative, and inclusive work environment.
  • Flexible working arrangements and modern office facilities.

Method of Application

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