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.

• 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

• 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.

• 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.

• 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.