Senior Database Administrator
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Job Description
Senior Database Administrator managing SQL Server, PostgreSQL, and DynamoDB databases for Taxwell's digital tax filing platform. Leading operational excellence and performance in high-scale environments.
Responsibilities:
- Own the end-to-end health, performance, availability, and scalability of SQL Server, PostgreSQL, and DynamoDB databases across AWS environments.
- Lead the evolution of Taxwell’s database platform architecture, standards, and operational practices.
- Identify and implement improvements that enhance performance and reliability, especially for seasonal high-volume workloads.
- Perform advanced performance tuning through execution plan analysis, indexing strategies, and optimization techniques.
- Refine and manage backup/restore processes to meet strict RPO/RTO requirements.
- Build and maintain Datadog-based DB observability dashboards and alerts in alignment with SRE.
- Participate in on-call rotations and lead triage of database-related incidents, including contributing to blameless RCAs.
- Partner with SRE, Software Engineering, Data Engineering & Analytics, and Architecture teams to ensure database best practices are integrated into application and data pipelines.
- Review and deploy database change scripts from internal development teams and third-party vendors.
- Provide guidance during architectural reviews, schema design, and performance modeling for new features.
- Develop automation using T-SQL, PowerShell, and Bash to streamline operations, baseline performance, validate system health, and support observability.
- Implement automated integrity checks, failover validation, and performance baselining.
- Contribute to and review database Infrastructure-as-Code (IaC) definitions using CloudFormation and Terraform.
- Support modernization as Taxwell evolves its data platform and migrates legacy systems to more scalable architectures.
- Implement and audit database security controls, encryption, access management, and compliance requirements.
- Ensure adherence to best practices for data integrity, retention, auditing, and access control.
- Serve as the senior-most technical DBA, mentoring junior DBAs and guiding engineers in database best practices.
- Lead cross-team initiatives to improve reliability, scalability, automation, and data quality.
Requirements:
- 8+ years of experience in database administration, engineering, or architecture roles.
- Deep expertise with Microsoft SQL Server (performance tuning, high availability, indexing, query optimization).
- Production experience with PostgreSQL and DynamoDB.
- Strong experience with AWS database services including RDS and SQL Server on EC2.
- Proficiency in T-SQL, PowerShell, and Bash for automation.
- Experience supporting high-scale, mission-critical environments.
- Familiarity with IaC (CloudFormation, Terraform) with ability to review DB IaC changes.
- Experience with Datadog or similar observability platforms.
- Excellent communication and collaboration skills.
- Strong analytical and diagnostic abilities with a data-driven mindset.
- Ability to thrive in fast-paced environments with seasonal workload spikes.
Benefits:
- Health insurance
- 401(k) matching
- Flexible work hours
- Professional development opportunities
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