Database Administrator - GCCA Remote

TransUnion; Johannesburg; Remote; ZAR 200,000 - 300,000; Full time

Job summary

TransUnion is seeking a skilled Database Administrator to join their engineering team in Johannesburg. The role emphasizes MySQL database administration on AWS, focusing on security, scalability, and high-availability. Ideal candidates bring 3+ years of DBA experience and are well-versed in best practices for database management and optimization.

Qualifications

• 3+ years of hands-on experience as a MySQL DBA.
• Expert knowledge in AWS RDS and database security.
• Experience with scalability strategies for high-traffic systems.

Responsibilities

• Perform day-to-day MySQL database administration on AWS RDS.
• Design and implement high-availability architectures.
• Automate routine tasks using AWS Lambda and Terraform.

Skills

Database architecture

Query optimization

Transaction mechanisms

AWS RDS

Backup / Restore

Scalability designs

Security & Compliance

Monitoring & Automation

Tools

MySQL

AWS Lambda

Terraform

Bash

Python

Job description

Job title : Database Administrator - GCCA Remote

Job Location : Gauteng, Johannesburg Deadline : July 11, 2025 Quick Recommended Links

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We’re looking for a talented and proactive Data Base Administrator Developer to join our growing engineering team.

What You'll Bring :

• 3+ years of hands-on experience as a MySQL DBA, with deep expertise in :
• Database architecture, query optimization, and transaction / locking mechanisms.
• Storage engines (InnoDB, MyISAM) and replication (GTID, binlog).
• Proven experience with AWS RDS, including :
• Configuration of parameter groups, Multi-AZ deployments, and Performance Insights.
• Backup / Restore (snapshots, PITR) and cross-region replication.
• Scalability expertise :
• Designing sharding, partitioning, and read / write splitting for high-traffic systems.
• Familiarity with sharding tools (e.g., Vitess, ShardingSphere) is a plus.
• Security & Compliance :
• Implementing TLS encryption, IAM-based access control, and data masking.
• Monitoring & Automation :

Nice-to-Have :

• Experience with Redis, DynamoDB, or other NoSQL solutions.
• Knowledge of Aurora or data warehousing (Redshift).

Impact You'll Make :

• Perform day-to-day MySQL database administration (deployment, monitoring, backup / restore, performance tuning) on AWS RDS.
• Design and implement high-availability architectures (master-slave replication, failover) and sharding strategies for large-scale datasets.
• Optimize AWS RDS resource allocation (instance types, storage, IOPS) to balance performance and cost efficiency.
• Develop and enforce database security policies (access control, encryption, compliance with GDPR / HIPAA).
• Lead disaster recovery (DR) planning, including RTO / RPO definitions and regular drills.
• Collaborate with developers to review SQL queries, schema designs, and resolve performance bottlenecks.
• Automate routine tasks (backups, scaling) using AWS Lambda, Terraform, or scripting (Bash / Python).
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