Role Purpose:
The Site Reliability Engineer (SRE) is responsible for ensuring the reliability, performance, scalability, and availability of RSAWEB's platforms, network services, and customer-facing systems. This role blends software engineering, infrastructure automation, and operations to deliver highly reliable services and improve the efficiency of technical teams.
1. Reliability & System Performance
Maintain high availability and performance across platforms, services, and infrastructure.
Define, measure, and improve SLIs/SLOs/SLAs for critical systems.
Troubleshoot system and network reliability issues proactively.
Build automation for deployments, monitoring, configuration, and operational tasks.
Improve CI/CD pipelines and assist engineers with release engineering.
Reduce manual work (toil) by implementing self-service tools and automation workflows.
Deploy, manage, and optimise cloud and on-prem infrastructure (Linux servers, virtualisation, containers).
Work with network teams to ensure resilient integration between systems and ISP network elements.
Manage and scale containerised platforms (Docker, Kubernetes).
Implement and maintain monitoring, alerting, and logging solutions (e.g., Prometheus, Grafana, ELK, Datadog).
Ensure actionable, low-noise alerting and system dashboards.
Use metrics to identify performance bottlenecks and reliability risks.
Participate in incident response, including root cause analysis and corrective actions.
Improve monitoring and automation to prevent repeated issues.
Assist with on-call rotations to support critical services.
Implement security best practices across systems and deployments.
Support vulnerability scanning, patching, and secure configurations.
Ensure compliance with internal and industry standards (ISO, POPIA, etc).
Work closely with Network Engineering, DevOps, Software Development, and NOC teams.
Provide technical guidance in system design, scalability, and reliability improvements.
Improve operational processes through documentation and automation.
Requirements
Diploma or degree in Computer Science, Engineering, Information Technology, or related field.
Relevant certifications (AWS/Azure/GCP, Linux, Kubernetes, Terraform) are beneficial.
3–5+ years in SRE, DevOps, Systems Engineering, or Infrastructure roles.
Experience supporting large-scale, mission-critical environments (preferably ISP or telecom).
Strong background in Linux (CentOS, Ubuntu, Debian) administration.
Experience with container orchestration and Infrastructure as Code.
Technical Skills
Strong scripting skills (Python, Bash, Go preferred).
CI/CD tools: GitHub Actions, GitLab CI, Jenkins, ArgoCD, etc.
IaC: Terraform, Ansible, Pulumi, CloudFormation.
Cloud platforms: AWS / Azure / GCP (or private cloud / OpenStack).
Monitoring: Prometheus, Grafana, Zabbix, ELK, Datadog.
Networking fundamentals: DNS, DHCP, firewalls, load balancing, routing.
Databases: SQL and NoSQL basics.
Knowledge of ISP infrastructure such as BNGs, RADIUS, DNS clusters (advantage).
Benefits
Skills Required
- Diploma or degree in Computer Science, Engineering, Information Technology, or a related field
- 3-5+ years of experience in SRE, DevOps, Systems Engineering, or Infrastructure roles
- Experience supporting large-scale, mission-critical environments
- Strong Linux administration experience, including CentOS, Ubuntu, or Debian
- Experience with container orchestration and Infrastructure as Code
- Strong scripting skills in Python, Bash, or Go
- Experience with CI/CD tools such as GitHub Actions, GitLab CI, Jenkins, or ArgoCD
- Experience with Infrastructure as Code tools such as Terraform, Ansible, Pulumi, or CloudFormation
- Experience with AWS, Azure, GCP, private cloud, or OpenStack
- Experience with monitoring and observability tools such as Prometheus, Grafana, Zabbix, ELK, or Datadog
- Knowledge of networking fundamentals, including DNS, DHCP, firewalls, load balancing, and routing
- Basic SQL and NoSQL database knowledge
- Relevant AWS, Azure, GCP, Linux, Kubernetes, or Terraform certifications
- Experience with ISP infrastructure such as BNGs, RADIUS, and DNS clusters
What We Do
RSAWEB is a South African internet service provider and technology company serving residential and business customers. It delivers fibre and other connectivity services alongside cloud infrastructure, mobile data management, security, IoT, and related digital solutions. The company positions itself as a technology partner, using its network and data-centre infrastructure to help customers increase revenue, manage risk, and control costs.
