Principal Oracle Database Engineer - Exadata, RAC, HA/DR & Cloud

Position

Principal Oracle Database Engineer / Principal Consultant

Experience

15-20+ years senior principal-level

Location

Singapore client-facing / onsite as required

Environment

Business-critical banking, telecom, government or regulated enterprise

Core Expertise

Oracle Database, Exadata, RAC, Data Guard, migrations, tuning, security, production support

Role Overview

We are seeking a highly Experienced Principal Oracle Database Engineer to lead engineering, administration, availability, performance, security, and lifecycle management of complex Oracle database estates. The role requires deep hands-on expertise across Oracle Database and the Exadata stack, RAC, Grid Infrastructure, ASM, Data Guard/Active Data Guard, RMAN, GoldenGate, large-scale upgrades and migrations, and critical production operations. The successful candidate will serve as a technical lead and trusted advisor, resolving high-impact incidents, guiding architecture and recovery strategy, and improving operational efficiency through automation.

Key Responsibilities

Oracle Database & Exadata Engineering

. Own and administer enterprise Oracle database environments including standalone, RAC, multitenant CDB/PDB, and engineered-system landscapes.

. Manage Exadata compute nodes and storage cells troubleshoot Smart Scan, Flash Cache, Hybrid Columnar Compression, and infrastructure issues.

. Install, configure, patch, upgrade, and maintain Oracle Database, Grid Infrastructure, ASM/ACFS, Exadata, Exadata Cloud@Customer (ExaCC) and Oracle Database Appliance (ODA), as applicable.

. Support Oracle versions such as11g, 12c, 19c and newer releases including 23ai/26ai where deployed.

High Availability, Disaster Recovery & Backup

. Design, implement, and support Oracle RAC and Grid Infrastructure for availability and scalability.

. Implement and administer DataGuard, Active Data Guard and Data Guard Broker execute planned switchovers and failovers.

. Develop recovery strategies aligned to business RTO/RPO maintain and validate DR runbooks and conduct DR exercises.

. Design and manage RMANbackup/recovery policies, restore validation and point-in-time recovery procedures.

Upgrades, Migration & Replication

. Lead major-version upgrades, cross-platform migrations, data-centre relocations, consolidation and modernization.

. Plan and execute multi-terabyte migrations with controlled downtime, cutover plans, rollback approaches andpost-migration verification.

. Implement and administer Oracle GoldenGate for replication and migration troubleshoot lag, source-target mismatches, and replication errors.

. Use appropriate tools such as RMAN, Data Pump and GoldenGate conduct dependency assessment, sizing, validation and operational handover.

Performance Engineering & Troubleshooting

. Perform end-to-end SQL and database tuning, execution plan analysis, statistics management and investigation of contention, CPU, memory and I/O bottlenecks.

. Use AWR, ADDM, ASH, SQL tracing and Oracle Enterprise Manager (OEM) for diagnostics and optimization.

. Collaborate with application, infrastructure, and storage teams to resolve complex performance issues and improve critical batch or online workloads.

. Conduct capacity planning, workload analysis, database sizing and performance forecasting.

Critical Production Support & Incident Management

. Provide senior-level support for mission-critical environments, including 24×7 on-call coverage and Severity1 response as required.

. Lead incident recovery, triage,root-cause analysis, problem management and presentation of findings toclient/management stakeholders.

. Operate within ITIL-alignedincident, change, release and operational controls meet agreed SLAs and change windows.

. Create and maintain SOPs, runbooks, escalation procedures and technical knowledge documentation.

Security, Compliance & Auditing

. Implement Transparent Data Encryption (TDE), wallet/key management, database auditing and secure configuration controls.

. Harden databases against CIS benchmarks and client security standards coordinate remediation of vulnerabilities and audit findings.

. Configure and support Oracle Audit Vault and Database Firewall (AVDF), including monitoring, policy configuration, and upgrades.

. Work with risk, security, and compliance teams on access control and regulatory obligations.

Automation, Cloud & Technical Leadership

. Automate DBA, provisioning, monitoring, patching and operational tasks using Python, Ansible, SQL andPL/SQL.

. Support OCI database services, Autonomous Database and ExaCC AWS/Azure database service fundamentals are beneficial.

. Provide technical leadership and advisory on architecture, migration strategy, capacity, sizing, security, and operational readiness.

. Mentor engineers, review technical deliverables, lead knowledge-transfer sessions and promote engineering standards.

. Evaluate or support Oracle AI Database capabilities, including AI Vector Search, where relevant.

Required Skills & Experience

. Typically 15-20+ years of Oracle Database administration, engineering, consulting or advanced support experience appropriate to a principal role.

. Deep hands-on Oracle Exadata, RAC, Grid Infrastructure, ASM and multitenant CDB/PDB expertise.

. Strong Data Guard/Active DataGuard, Broker, RMAN backup/recovery and RTO/RPO-oriented DR experience.

. Demonstrated delivery oflarge-scale upgrades and migrations, including multi-terabyte andcross-platform workloads.

. Hands-on Oracle GoldenGate implementation and troubleshooting.

. Advanced SQL/PLSQL and performance tuning with AWR, ADDM, ASH, execution plans and OEM.

. Practical security skills in TDE, wallets, auditing, CIS hardening and/or AVDF.

. Critical production support, Severity 1 incident leadership and structured RCA experience.

. Python and/or Ansible automation Oracle Linux, RHEL or equivalent Unix/Linux administration.

. Strong customer communication, technical documentation, stakeholder advisory and mentoring skills.

Preferred / Advantageous Skills

. OCI, Exadata Cloud@Customer, Autonomous Database or Oracle AI Database exposure.

. OEM Cloud Control administration or upgrade experience.

. Terraform, Docker or Kubernetes exposure.

. Experience with SQL Server, PostgreSQL, or MongoDB in mixed database environments.

. Relevant Oracle certifications across DBA, RAC/Grid, tuning, migration, OCI or AI Database.

. Experience in banking/capitalmarkets, telecommunications, government or similarly regulated critical environments.

. Resident engineer, principal consultant, technical lead or trusted-advisor engagement experience.

Education & Certifications

Bachelor's degree in Computer Science, IT, Engineering, or a related discipline preferred. Relevant postgraduate qualifications and Oracle professional certifications are advantageous. Equivalent depth of enterprise Oracle engineering experience may be considered.

Professional Attributes

. Calm, methodical and decisive during production incidents and critical cutovers.

. Strong ownership, accountability and risk-aware judgement.

. Able to communicate complex technical topics clearly to technical teams, customers and management.

. Collaborative, customer-focusedand capable of leading work across distributed teams.

. Committed to secure operations, knowledge sharing, documentation and continuous improvement.

Candidate Screening Focus

Candidates with demonstrable hands-on Oracle Exadata + RAC + Data Guard/Active Data Guard expertise, large-scale upgrade/migration delivery, advanced performance tuning, database security, and 24×7 critical production support leadership. Profiles focused mainly on routine monitoring or support without engineering, HA/DR, migration, and technical leadership depth may not meet this principal-level requirement.