System Engineer (DBA)
Summary
Senior database administrator managing clients' mission-critical Oracle 19c+ and MS SQL Server production environments across hybrid on-premises and cloud (AWS/Azure/OCI) infrastructure. Day-to-day work covers performance tuning, HA/DR design (Data Guard/RAC, AlwaysOn), security compliance, automation with PowerShell/Python/Bash, customer escalation support, and a 24/7 on-call rotation.
Job Summary
We are seeking a Senior Database Administrator (DBA) with deep expertise in Oracle and Microsoft SQL Server to manage and support our clients’ mission-critical, hybrid customer production environments. As a senior member of the team, you will ensure high availability, data integrity, and optimal performance across both cloud infrastructure and on-premises data centers. This role requires an experienced engineer capable of handling complex database architectures, leading technical troubleshooting efforts, and participating in a 24/7 on-call shift rotation to guarantee uninterrupted service for our customers. Less experienced candidate will be considered as Database Administrator (DBA).
Core Responsibilities
Hybrid Infrastructure Management: Architect, configure, and maintain production Oracle (19c+) and Microsoft SQL Server environments across hybrid setups (on-premises and cloud platforms like AWS, Azure, or OCI).
24/7 Production Support: Participate actively in a formal 24/7 on-call rotation/ duty roster to immediately diagnose, troubleshoot, and resolve critical customer database incidents and outages.
Advanced Performance Engineering: Lead complex performance tuning initiatives, analyzing execution plans, optimizing slow-running SQL queries, and configuring system-level parameters for maximum throughput.
High Availability & Disaster Recovery: Design, implement, and rigorously test enterprise-grade HA/DR solutions, including Oracle Data Guard/RAC and SQL Server AlwaysOn Availability Groups, across distributed nodes, etc.
Customer-Facing Support: Interact directly with customer technical teams to provide escalation support, analyze performance bottlenecks, and implement structural database changes.
Advanced Scripting & Automation: Build and maintain scalable automation frameworks using PowerShell, Python, or Bash to manage provisioning, automated patching, and proactive system health alerts.
Security & Compliance Auditing: Enforce strict access control, encryption at rest/in transit, and coordinate regular security patching to satisfy strict enterprise compliance guidelines.
Required Skills & Qualifications
Experience: 5+ years of dedicated database administration experience in enterprise-scale production environments.
Database Mastery: Senior-level proficiency with both Oracle Database and MS SQL Server architectures.
Hybrid & Cloud Competency: Proven track record of managing enterprise database workloads across hybrid setups (connecting physical data centers with public cloud infrastructure).
Expert Programming: Advanced command of Oracle PL/SQL and SQL Server T-SQL for complex database logic, troubleshooting, and architectural design.
Crisis Management: Demonstrated ability to remain calm and systematic under pressure while leading the resolution of high-severity outages during on-call shifts.
OS Administration: Deep familiarity administering databases hosted on both Enterprise Linux (RHEL/OEL) and Windows Server.
Preferred Qualifications
Certifications: Top-tier credentials such as Oracle Certified Master (OCM), AWS Certified Database, or Microsoft Certified: Azure Database Administrator Associate.
Multi-Tenant Experience: Previous experience working within an MSP (Managed Service Provider) or supporting multi-tenant environments with diverse customer SLAs.