Senior Unix Engineer

Job description

Tasks

• Core UNIX Engineering & Support:
  • Design, secure creation, setup and maintenance of resilient UNIX environments
  • Responsibility for the OS lifecycle strategy: patching, upgrades, security baselines and hardware refresh planning
  • Maintenance of solutions and performance-optimized business systems
• DevOps, SRE & Automation:
  • Adoption of an SRE mindset: treatment of infrastructure as code, prioritization of availability and observability, automation of toil
  • Automation of provisioning, compliance checks and configuration enforcement
  • Use of GitLab for source code control, peer-approved automation pipelines, change tracking and documentation versioning
  • Contribution to CI/CD workflows for infrastructure-as-code deployments and integration with enterprise tools such as ServiceNow, Jenkins or GitHub Actions
• Security:
  • Ensuring that UNIX systems are hardened and compliant with security frameworks
  • Management of OS-level security policies, including firewall rules, kernel parameters, SELinux policies and secure configurations
  • Integration of systems for identity and privileged access management
  • Support audit, forensics and security event investigations in collaboration with InfoSec teams
  • Regular review and remediation of security vulnerabilities identified by Qualys, Nessus or other scanning tools
  • Contribution to incident response planning, patching SLAs and compliance reporting
  • Design and maintenance of logging, audit trails and syslog/SIEM integrations
  • Authentication, authorization and directory services
  • Integration of UNIX systems with enterprise identity management platforms
• Other:
  • Support for service, UNIX remediation and inventory for performance and availability
  • Participation in on-call rotations, DR tests and RCA for highly critical incidents
• Hybrid cloud & platform modernization:
  • Support for UNIX workloads running on VMware and preparation of platforms for future cloud integration
  • Assistance with cloud readiness assessments, infrastructure modernization efforts and immovable infrastructure adoption
  • Collaboration with cloud, DevOps and cybersecurity teams on secure hybrid operating models
• Documentation & Governance:
  • Maintenance of robust documentation
  • Ensuring that all platforms and automations meet compliance standards
  • Lead or contribute to engineering design reviews, change boards and audit remediation efforts

Requirements

• Required skills and experience:
  • Proven ability to tackle deep technical challenges with high visibility
  • Previous experience and exposure to UNIX engineering with deep expertise in large enterprise environments
  • Strong understanding of centralized authentication/authorization
  • Familiarity with shell scripting (bash, ksh, sh), strong familiarity with Python and Ansible
  • Proven experience with infrastructure-as-code principles, Git-driven configuration management and CI/CD pipelines using GitHub Actions and Ansible/AWX
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