Senior Database Administrator | Enterprise Environment

Hrvisory Pty; Pretoria; On-site; ZAR 900,000 - 1,400,000; Full time

Job summary

Hrvisory Pty seeks a Senior Database Administrator to lead enterprise SQL Server environments, optimise performance and implement HA/DR strategies. The role involves managing replication, cloud integration, security governance and runbook-driven operations.

You will mentor junior DBAs, tackle critical incidents, and drive automation using PowerShell, Bash or Python across large estates.

Qualifications

• 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

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

Skills

SQL Server

HA/DR

Performance tuning

Automation scripting

Cloud platforms

Security/compliance

Mentorship

Education

Degree in Information Technology or Computer Science

Tools

PowerShell

Bash

Python

ClickHouse

FoundationDB

LGTM Stack (Loki Grafana Tempo Mimir)

Rybbit

Valkey

Job description

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