SENIOR DATABASE ADMINISTRATOR | ENTERPRISE ENVIRONMENT

Hrvisory Pty Ltd · Johannesburg

Posted 19 August 2026

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Introduction

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
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SENIOR DATABASE ADMINISTRATOR | ENTERPRISE ENVIRONMENT at Hrvisory Pty Ltd — Johannesburg · JobAlertsZA