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Senior Database Administrator - 12 months contract

ESOL PTE. LTD.Singaporemycareersfuturepublished 09/09/2026
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Must-have:JavaAWSCloudSecurity

Job Summary

We are looking for an experienced Database Administrator (DBA) with strong hands-on experience in Oracle, MySQL, PostgreSQL, and IBM DB2 databases across both AWS cloud and on-premises/EC2 environments.

The candidate should have strong expertise in Oracle RAC, Data Guard, ASM, AWS RDS/Aurora, DB2 administration, Fix Pack and Java upgrades, ILMT compliance, database performance tuning, backup/recovery, security, patching, and high-availability/DR solutions.

Key Responsibilities

  • Administer and support Oracle, MySQL, PostgreSQL, and IBM DB2 databases.
  • Manage AWS RDS Oracle, RDS/Aurora MySQL, and RDS PostgreSQL environments.
  • Manage DB2 and MySQL databases hosted on AWS EC2.
  • Perform database installation, configuration, upgrades, patching, maintenance, and troubleshooting.
  • Monitor database availability, performance, capacity, and resource utilization.
  • Perform database backup, recovery, restore testing, and disaster recovery activities.
  • Manage database users, roles, privileges, authentication, and security controls.
  • Perform database performance and SQL tuning.
  • Support production deployments, maintenance activities, incidents, and change requests.

Oracle DBA Skills

  • Oracle Database 19c administration.
  • Oracle RAC, Data Guard, and ASM.
  • RMAN backup and recovery.
  • Oracle performance and SQL tuning.
  • Oracle patching, Release Updates (RU), and upgrades.
  • Data Guard switchover/failover and DR activities.
  • RAC and ASM troubleshooting.
  • Oracle security, auditing, users, roles, and privileges.

MySQL Skills

  • MySQL 5.7/8.0 administration.
  • AWS RDS/Aurora MySQL administration.
  • MySQL administration on AWS EC2.
  • Backup and recovery.
  • Replication and high availability.
  • Performance monitoring and SQL tuning.
  • User and privilege management.
  • MySQL patching, upgrades, and vulnerability remediation.
  • Troubleshooting connectivity, locking, replication, and performance issues.

PostgreSQL Skills

  • PostgreSQL administration, preferably versions 17
  • AWS RDS PostgreSQL administration.
  • Backup and recovery using pg_dump/pg_restore and physical backups.
  • Streaming replication and high availability.
  • PostgreSQL performance and SQL tuning.
  • PostgreSQL patching and major-version upgrades.
  • User, role, and privilege management.

IBM DB2 Skills

  • IBM DB2 database administration on AWS EC2/Linux.
  • DB2 installation, configuration, maintenance, and troubleshooting.
  • DB2 Fix Pack upgrades and security patching.
  • DB2 Java/JDK upgrades and compatibility management.
  • DB2 backup, recovery, restore, and DR activities.
  • DB2 HADR and high-availability configuration.
  • Troubleshooting DB2 database and application connectivity issues.
  • Review IBM security advisories and perform vulnerability remediation.

IBM ILMT & License Compliance

  • Manage and support IBM License Metric Tool (ILMT) requirements.
  • Monitor DB2 software inventory and license usage.
  • Maintain IBM licensing and compliance documentation.
  • Support ILMT audits and provide required compliance evidence.
  • Coordinate with infrastructure/licensing teams for IBM software compliance.
  • Ensure DB2 Fix Pack and Java/JDK versions meet organizational security and compliance requirements.

AWS / Cloud Skills

  • Hands-on administration of:
  • Amazon RDS for Oracle
  • Amazon RDS/Aurora MySQL
  • Amazon RDS PostgreSQL
  • MySQL and DB2 on Amazon EC2
  • AWS backup and restore.
  • CloudWatch monitoring and alerting.
  • AWS security and database monitoring.
  • AWS KMS, Secrets Manager, and IAM concepts.
  • Database migration and cloud modernization experience.
  • Understanding of AWS high availability, Multi-AZ, backup, and DR architecture.

Security & Compliance

  • Database vulnerability assessment and remediation.
  • Security patching and database version upgrades.
  • Database auditing and logging.
  • Password and privileged account management.
  • Support security compliance and audit requirements.
  • Review vendor security advisories for Oracle, MySQL, PostgreSQL, DB2, and Java.
  • Maintain evidence for security, backup, patching, and compliance activities