Senior Linux & Infrastructure Automation Engineer

About the job

The Senior Linux & Infrastructure Automation Engineer is responsible for engineering, scaling, and maintaining the underlying Valassis DMT platform environment. This individual contributor role focuses heavily on hands-on systems engineering, robust configuration management, and high-availability cloud infrastructure execution across hybrid environments, spanning bare-metal servers, collocations, and cloud architectures. The position requires deep expertise in Linux systems administration, advanced automation using Puppet and Ansible, and experience deploying and operating OpenStack environments.

• Core Responsibilities
• Infrastructure Automation & Configuration Management: Design, develop, and maintain declarative configuration modules using Puppet and Ansible to automate system provisioning, application deployment, and continuous compliance across bare-metal and virtualized nodes.
• Linux Systems Engineering: Administer, tune, and troubleshoot enterprise Linux environments (primarily Ubuntu) for optimal performance, kernel optimization, security hardening, and maximum uptime.
• Cloud & Virtualization Operations: Operate and optimize virtualization and hypervisor layers (including OpenStack, LXD, KVM, and ESXi lifecycles) and drive automated bare-metal server provisioning.
• Storage & Infrastructure Maintenance: Administer and maintain persistent storage infrastructure alongside physical SAN equipment (PureStorage or enterprise S3-compatible targets).
• Technical Execution & Migrations: Actively execute platform refreshes, legacy environment decommissionings, and infrastructure migrations across datacenter footprints.

• Bachelor's degree in Computer Science, Information Technology, or a related engineering discipline, or equivalent professional work experience.
• Minimum of 5–7+ years of progressive hands-on experience in Linux infrastructure engineering, systems administration, and cloud infrastructure automation.

• Required Skills
• Linux Administration - Expert-level, hands-on experience engineering, hardening, and maintaining enterprise Ubuntu/Debian server environments.
• Automation & CM - Proven mastery authoring custom Puppet modules and Ansible playbooks/roles to automate configuration, orchestration, and system management at scale.
• Orchestration & Virtualization - Strong foundational background in bare-metal provisioning concepts and hypervisor/container runtimes (KVM, LXD, ESXi).
• Storage Fundamentals - Solid understanding of enterprise storage architectures, including SAN/NAS devices, block/object storage concepts, and volume management.
• Identity & Security - Working knowledge of cross-platform Active Directory integration, enterprise PKI/certificate enrollment, and domain identity services.

• Preferred Skills (Nice to Have)
• OpenStack Operations: Hands-on experience configuring, troubleshooting, and maintaining production OpenStack deployments (Nova, Neutron, Cinder, Keystone).
• Scale-Out Storage (Ceph): Direct experience configuring, operating, or maintaining Ceph storage clusters.
• Bare-Metal Provisioning Tools (MAAS): Hands-on experience with Canonical MAAS or similar automated bare-metal provisioning platforms.
• MicroCloud & Edge Frameworks: Familiarity with MicroCloud deployment and lightweight cloud infrastructure environments.

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