Senior SQL DBA – HA, Replication & Automation (On-Site)

Samaha Consulting; Johannesburg; Sur place; ZAR 900 000 - 1 200 000; Plein temps

Résumé du poste

Samaha Consulting is seeking an experienced SQL Server DBA with PostgreSQL knowledge for Pretoria and Durban. Work from office is mandatory.

With 8–10+ years in enterprise database administration, you will design HA/DR, manage replication, tune performance, automate tasks with scripting, and mentor junior DBAs while supporting cloud modernization.

Qualifications

• 8 to 10+ years of experience in enterprise database administration.
• A relevant degree in Information Technology, Computer Science, or a related discipline.
• Strong expertise in SQL Server or similar relational database management systems.
• Proven experience with high availability, disaster recovery, and replication technologies.
• Advanced skills in database performance tuning and query optimisation.
• Experience with automation and scripting (e.g. PowerShell, Bash, or Python).
• Exposure to modern cloud platforms and infrastructure environments.

Responsabilités

• Design, implement, and maintain high availability and disaster recovery solutions (e.g. clustering, availability groups, replication frameworks).
• 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 performance tuning using execution plans, wait statistics, and profiling tools.
• Investigate incidents, conduct root cause analysis, and implement effective remediation strategies.
• Drive database automation initiatives using scripting and self-service tooling to improve operational efficiency.
• Support infrastructure modernisation projects, including cloud adoption and optimisation initiatives.
• Ensure database security, compliance, and governance through controls such as encryption, auditing, and access management.
• Create and maintain technical documentation, runbooks, and operational standards.
• Provide technical mentorship and guidance to junior database administrators.
• Participate in critical incident response and provide after-hours support when required.

Connaissances

SQL Server

PostgreSQL

HA/DR

Performance tuning

Automation scripting

PowerShell

Python

Bash

Cloud platforms

Formation

Bachelor's degree in Information Technology or Computer Science

Outils

ClickHouse

FoundationDB

LGTM stack (Loki, Grafana, Tempo, Mimir)

Rybbit

Valkey

Description du poste

• Role : SQL Server DBA with Postgres SQL Knowledge /Experience Required

• Location : Pretoria [1 Role] & Durban [1 Role] [ Work from office Mandatory ]

Role Overview

• 8 to 10 + Years experience

• Design, implement, and maintain high availability and disaster recovery solutions (e.g. clustering, availability groups, replication frameworks)

• 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 performance tuning using execution plans, wait statistics, and profiling tools

• Investigate incidents, conduct root cause analysis, and implement effective remediation strategies

• Drive database automation initiatives using scripting and self-service tooling to improve operational efficiency

• Support infrastructure modernisation projects, including cloud adoption and optimisation initiatives

• Ensure database security, compliance, and governance through controls such as encryption, auditing, and access management

• Create and maintain technical documentation, runbooks, and operational standards

• Provide technical mentorship and guidance to junior database administrators

• Participate in critical incident response and provide after-hours support when required

• 6+ years of progressive experience in database administration within enterprise environments

• A relevant degree in Information Technology, Computer Science, or a related discipline

• Strong expertise in SQL Server or similar relational database management systems

• Proven experience with high availability, disaster recovery, and replication technologies

• Advanced skills in database performance tuning and query optimisation

• Experience with automation and scripting (e.g. PowerShell, Bash, or Python) Internal - Intellectual Property

• Experience with technologies such as ClickHouse, FoundationDB, LGTM stack (Loki,Grafana, Tempo, Mimir), Rybbit, or Valkey

• Exposure to cloud platforms and modern infrastructure environments

• Solid understanding of security, compliance, and data governance practices

• Strong problem-solving skills and the ability to manage critical incidents independently

• Excellent communication skills with the ability to work across technical and business stakeholders

• A collaborative team player who values knowledge sharing and continuous improvement

• Play a critical role in maintaining and optimising enterprise-scale database platforms

• Gain exposure to modern cloud technologies, automation frameworks, and large-scale data environments

• Work in a collaborative, high-performance engineering environment

• Contribute to infrastructure modernisation and continuous improvement initiatives

• Be part of a culture that values technical excellence, accountability, and innovation