Linux Developer

SUMMARY:
Our client in the Telecoms sector is seeking a Linux Developer on a contract duration of 6 to 12 months.

POSITION INFO:

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.