SENIOR DATABASE ADMINISTRATOR | ENTERPRISE ENVIRONMENT
Hrvisory Pty Ltd · Johannesburg
Posted 19 August 2026
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Are you a highly experienced Database Administrator with a strong background in SQL Server, high availability, disaster recovery, replication, and database performance optimisation?
We’re looking for a Senior Database Administrator to play a critical role in maintaining, optimising, and modernising enterprise-scale database platforms.
Duties & Responsibilities
- Design, implement and maintain High Availability (HA) & Disaster Recovery (DR) solutions, including clustering, Availability Groups and replication.
- Develop and manage complex data movement and replication architectures across large database estates.
- Monitor database environments and proactively address performance, stability and reliability issues.
- Perform advanced database performance tuning and query optimisation using execution plans, wait statistics and profiling tools.
- Investigate critical incidents, conduct Root Cause Analysis (RCA) and implement effective remediation.
- Drive database automation using PowerShell, Bash, Python and self-service tooling.
- Support cloud adoption, infrastructure modernisation and optimisation initiatives.
- Ensure database security, compliance and governance, including encryption, auditing and access management.
- Maintain technical documentation, runbooks and operational standards.
- Provide technical mentorship and guidance to junior DBAs.
- Participate in critical incident response and after-hours support when required
Desired Experience & Qualification
- 6+ years' progressive experience in Database Administration within enterprise environments.
- Relevant degree in Information Technology, Computer Science or related discipline.
- Strong expertise in Microsoft SQL Server or similar RDBMS platforms.
- Proven experience with HA, DR and database replication technologies.
- Advanced database performance tuning and query optimisation skills.
- Experience with PowerShell, Bash and/or Python automation and scripting.
- Exposure to modern technologies such as ClickHouse, FoundationDB, LGTM Stack (Loki, Grafana, Tempo, Mimir), Rybbit or Valkey.
- Exposure to cloud platforms and modern infrastructure environments.
- Strong understanding of security, compliance and data governance.
- Excellent problem-solving and critical incident management skills.
- Strong communication skills across technical and business stakeholders.
- A collaborative mindset with a passion for knowledge sharing and continuous improvement