Database Administrator
Optiva Open At a glance
Mid-level Data Architecture & Governance role at Optiva. Dhaka · full-time.
Pay not stated Data Architecture & Governance salary
dataroles summary, based on the employer's posting.
What you'll do
- Install, update and operate MariaDB, PostgreSQL and Cassandra databases, keeping capacity and performance in view
- Set up backups, recovery plans, replication and failover, then run disaster recovery exercises
- Track database health and availability, investigate slow queries and outages, and identify incident root causes
- Manage access controls, encryption, auditing and security updates across database environments
- Automate recurring administration with scripts, maintain operating guides, and help developers improve schemas and queries
What you bring
- Hands-on work with MariaDB or MySQL, PostgreSQL and Apache Cassandra
- Practical knowledge of replication, clustering, backup and recovery, plus database tuning and query optimization
- Linux and shell scripting experience, with familiarity using database monitoring tools
- Understanding of ACID and BASE, OLTP and distributed systems, and relational and NoSQL data modeling
Who this fits
This mid-level role suits a database administrator who can support production systems and work with developers on schema and query improvements. You’ll provide on-call support for production database environments.
From the employer
It's fun to work in a company where people truly BELIEVE in what they're doing!
We're committed to bringing passion and customer focus to the business.
Job Summary
We are seeking an experienced Database Administrator (DBA) to manage, maintain, and optimize MariaDB, PostgreSQL, and Cassandra database platforms. The ideal candidate will ensure high availability, performance, security, and scalability of databases supporting mission-critical applications.
Key Responsibilities
Database Administration:
Install, configure, upgrade, and maintain MariaDB, PostgreSQL, and Apache Cassandra databases
Perform database capacity planning, performance tuning, and optimization
Monitor database health, replication, clustering, and availability
Backup, Recovery & High Availability:
Design and manage backup and recovery strategies (logical & physical backups)
Implement and manage replication, clustering, and failover solutions
Perform disaster recovery planning and regular DR drills
Security & Compliance:
Manage database security: users, roles, privileges, encryption, and auditing
Apply security patches and upgrades in compliance with company policies
Ensure compliance with data protection and regulatory standards
Performance & Troubleshooting:
Diagnose and resolve database performance issues and outages
Analyze slow queries, locks, and resource bottlenecks
Provide root cause analysis (RCA) for incidents
Automation:
Automate routine DBA tasks using scripts (Shell, Python, etc.)
Support containerized and cloud-based database deployments (if applicable)
Documentation & Support:
Maintain database documentation, SOPs, and operational runbooks
Provide on-call support for production database environments
Assist developers with schema design, indexing, and query optimization
Required Skills & Qualifications:
Technical Skills:
Strong hands-on experience with MariaDB / MySQL, PostgreSQL, and Apache Cassandra
Expertise in:
Replication & clustering (Galera, PostgreSQL streaming replication, Cassandra clusters)
Backup & recovery tools (mysqldump, pg_dump, pg_basebackup, nodetool, etc.)
Performance tuning and query optimization
Experience with Linux systems and shell scripting
Knowledge of monitoring tools (Prometheus, Grafana, Zabbix, Nagios, etc.)
Database Concepts:
ACID vs BASE principles
OLTP and distributed database architectures
Data modeling for relational and NoSQL databases
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