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

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.

We are recruiting to fill the position below:

Job Title: Senior Oracle Database Administrator (Mongo DB, Cassandra DB)

Location: Lagos

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.

Application Closing Date
Not Specified.

How to Apply
Interested and qualified candidates should send their CV to: careers@bluechiptech.biz using “Database Administrator (Oracle, MySQL)” as the subject of the email.