Johannesburg: Linux Developer

Requirement Specification Maintain stable, secure, and high-performing Linux platforms that support [apps/services]. Deliver automation and engineering improvements, including Infrastructure as Code (IaC), CI/CD, and scripting, to reduce manual effort and minimise incidents. Strengthen the compliance posture through effective patching, hardening, and logging aligned with [standards]. Provide development and operational support for Linux-based services, platforms, and supporting tools. Linux Engineering Build, configure, and administer Linux servers across development, test, and production environments. Manage the full operating system lifecycle, including provisioning, patching, upgrades, kernel tuning, and repository management. Administer storage and file systems, including LVM, multipath, RAID, NFS/SMB, mounts, and quotas. Manage identity and access controls, including LDAP/AD integration, sudo policies, PAM, and SSH hardening. Configure and troubleshoot networking components such as bonding, VLANs, routing, and firewall rules using iptables or nftables. Provide L3 Linux administration with OpenShift monitoring capability aligned to operational and audit requirements. Linux Administration (RHEL): build, patch, upgrade, troubleshoot OpenShift Monitoring agent setup, alert tuning, incident integration Automation and Development Develop and maintain scripts and tooling using Bash, Python, Ansible, system units, cron, Terraform and APIs. Using Satellite server to implement automation. Support CI/CD integration by building pipeline tasks for deployment, configuration validation, and improved operational efficiency. Enable container-based workloads through Docker or Podman, provide basic Kubernetes support where required, and apply image hardening practices. Security and Compliance Apply CIS/STIG hardening baselines where appropriate. Manage vulnerability remediation, EDR integration, auditing, and log forwarding through tools such as syslog, journal, or rsyslog. Support certificate management, key rotation, and the secure handling of secrets through Vault or equivalent key management solutions. Operations and Reliability Maintain monitoring and alerting capabilities using tools. Provide L2/L3 incident and problem support, including triage, root-cause analysis, and corrective actions. Support DR and BCP readiness through backup integration, high availability, restore testing, and maintenance of operational runbooks.