Senior Database Administrator (SQL Server & Azure Data Platform)

Join Mizuho as a Senior Database Administrator (SQL Server & Azure Data Platform)!

We are seeking a highly skilled Senior SQL Server DBA with deep expertise in Microsoft SQL Server and Azure data platform technologies. The ideal candidate will also have solid exposure to PostgreSQL. This role is responsible for the design, administration, automation, security, performance, and resiliency of mission-critical database platforms supporting enterprise business applications.

The ideal candidate combines traditional DBA expertise with modern cloud, automation, observability, and infrastructure-as-code capabilities. This individual will serve as a senior escalation point for database operations while driving platform modernization, operational excellence, cloud adoption, and continuous improvement initiatives.

The successful candidate will have a strong ownership mindset, exceptional troubleshooting skills, and the ability to collaborate effectively across application, infrastructure, security, and cloud engineering teams.

Key Responsibilities Database Administration & Operations

• Administer and support Microsoft SQL Server environments from SQL Server 2016 through SQL Server 2025, and Azure-resident database platforms.
• Provide L3 operational support and serve as a senior escalation resource for complex database incidents and service requests.
• Ensure database platform availability, reliability, performance, and recoverability for business-critical systems.
• Manage database lifecycle activities including installation, configuration, patching, upgrades, migrations, and decommissioning.
• Participate in a 24x7 on-call rotation supporting production database environments.

High Availability, Disaster Recovery & Resiliency

• Design, implement, and support high availability and disaster recovery solutions.

• Administer technologies including:

• SQL Server Availability Groups
• Log Shipping
• Transactional Replication
• Failover Cluster Instances

• Azure-based DR architectures

• Validate and regularly test recovery procedures to ensure compliance with business RTO and RPO objectives.
• Manage enterprise backup, recovery, and retention strategies.

Azure Database Platform

• Architect, deploy, and support database solutions across:

• Azure SQL Database
• Azure SQL Managed Instance
• SQL Server on Azure Virtual Machines

• Azure Storage and backup services

• Assess existing workloads and develop migration strategies for cloud adoption and modernization.
• Implement and optimize Azure-native capabilities, including monitoring, security, Azure Elastic Jobs, Azure Automation Runbooks, and Cloud Shell automation.
• Partner with cloud engineering teams to ensure database platforms align with enterprise Azure standards and landing zone requirements.
• Plan, architect, and execute seamless database migrations from on-premises environments to Azure Cloud, as well as reverse migrations from Azure Cloud to on-premises environments.
• Perform performance and cost engineering to optimize cloud resource utilization across Azure SQL tiers.

Performance Engineering & Optimization

• Troubleshoot and resolve complex database and application performance issues.
• Partner with development teams to optimize schema design, indexing strategies, stored procedures, ETL processes, and application queries.
• Establish proactive performance monitoring and capacity planning practices.

Automation & Platform Engineering

• Automate operational processes using:

• PowerShell
• dbatools.io
• Azure Automation

• Git-based source control workflows

• Develop repeatable solutions that reduce manual effort and improve operational consistency.
• Support Infrastructure-as-Code and configuration management initiatives where applicable.
• Drive continuous improvement through scripting, self-service capabilities, and operational automation.

Monitoring, Observability & Capacity Management

• Proactively monitor database health, availability, capacity, and performance using enterprise monitoring platforms.

• Support and optimize tools such as:

• OpsRamp
• SQL Sentry
• Azure Monitor

• Log Analytics

• Identify trends and risks before they impact service delivery.
• Lead storage growth forecasting and capacity planning efforts.

Security, Compliance & Governance

• Implement database security best practices and regulatory controls.
• Partner with Information Security teams to address vulnerabilities, hard…