Infrastructure Manager - Linux Subject Matter Expert (34285)

The Manager will serve as a Linux Subject Matter Expert (SME), responsible for monitoring, maintaining, troubleshooting, and supporting high-performance computing (HPC) nodes that are critical to our client’s day-to-day operations. The role focuses on ensuring a secure, optimized, and highly available HPC environment, while delivering deep technical expertise and guidance to users and internal teams.

Candidates must be able to work onsite at least 4 days per week.

Key Responsibilities

• Act as the primary technical expert for Linux-based HPC clusters – ensuring performance, capacity, and availability targets are met.
• Identify, diagnose, and resolve complex second-level issues for hardware, software, network, VPN, and Linux environments; escalate as needed with full documentation.
• Manage daily operations of Linux-based HPC environments, including patching, upgrades, security hardening, and configuration of Ubuntu and RedHat systems.
• Support job submission and workload management using Slurm or OpenHPC, and assist end users in optimizing compute workloads.
• Migrate existing nodes to Linux, ensuring minimal downtime and performance impact.
• Implement and manage cluster patching/automation tools such as Foreman (or similar) to streamline operations.
• Install and configure servers, storage, hypervisors (KVM), and other HPC infrastructure components.
• Automate administrative tasks to improve operational efficiency.
• Execute firewall access requests, monitor security alerts, and assist in incident response.
• Provide second-level support and mentorship to junior technical staff, ensuring knowledge transfer and consistent process execution.
• Develop, maintain, and publish technical documentation, KB articles, and end-user guides for new systems or upgrades.
• Participate in on-call rotations, emergency incident response, and occasional after-hours maintenance windows.
  
  

Education & Experience

• Diploma or Degree in Computer Science, Information Technology, or related field.
• Minimum 2+ years in IT (with a related University Degree) or 7+ years in IT (with a three-year College Diploma).
• Enterprise-level Linux expertise (Ubuntu and/or RedHat) is essential.
• Certifications (e.g., MCSE, CISSP) are strong assets.
  
  

Specialized Skills

• Proven track record as a Linux SME in installation, tuning, and operational support.
• In-depth experience with HPC clusters and job scheduling tools such as Slurm, LSF, or GridEngine.
• Strong knowledge of KVM or similar hypervisors.
• Working understanding of network systems, protocols, and standards including Active Directory integration.
• Identity management experience (Microsoft Identity Manager, Azure AD Connect).
• Solid scripting skills (Bash required; additional scripting languages are an asset).
• Experience applying advanced troubleshooting to resolve performance, configuration, or security issues.
• Excellent problem-solving, organizational, and documentation skills.
• Ability to communicate clearly with both technical and non-technical stakeholders.
• Bilingualism (English/French) is an asset.
• Microsoft Windows knowledge is an asset.
  
  

Decision Making & Supervision

• Operate with minimal supervision while making decisions based on analysis, troubleshooting, and established procedures.
• Coordinate with helpdesk, networking, platform, and security teams to ensure alignment of upgrades, patches, and operations.
  
  

Working Conditions

• Comfortable office environment with periodic physical tasks (e.g., installing hardware).
• Requires appropriate security clearance.
• Must be willing to provide occasional off-hours support and participate in on-call rotation.
  
  

Published Job Description

• Published Job Description
  
  

The HPC Administrator will serve as a Linux Subject Matter Expert (SME), responsible for monitoring, maintaining, troubleshooting, and supporting high-performance computing (HPC) nodes that are critical to our client’s day-to-day operations. The role focuses on ensuring a secure, optimized, and highly available HPC environment, while delivering deep technical expertise and guidance to users and internal teams. Candidates must be able to work onsite at least 4 days per week.

Key Responsibilities

• Act as the primary technical expert for Linux-based HPC clusters – ensuring performance, capacity, and availability targets are met.
• Identify, diagnose, and resolve complex second-level issues for hardware, software, network, VPN, and Linux environments; escalate as needed with full documentation.
• Manage daily operations of Linux-based HPC environments, including patching, upgrades, security hardening, and configuration of Ubuntu and RedHat systems.
• Support job submission and workload management using Slurm or OpenHPC, and assist end users in optimizing compute workloads.
• Migrate existing nodes to Linux, ensuring minimal downtime and performance impact.
• Implement and manage cluster patching/automation tools such as Foreman (or similar) to streamline operations.
• Install and configure servers, storage, hypervisors (KVM), and other HPC infrastructure components.
• Automate administrative tasks to improve operational efficiency.
• Execute firewall access requests, monitor security alerts, and assist in incident response.
• Provide second-level support and mentorship to junior technical staff, ensuring knowledge transfer and consistent process execution.
• Develop, maintain, and publish technical documentation, KB articles, and end-user guides for new systems or upgrades.
• Participate in on-call rotations, emergency incident response, and occasional after-hours maintenance windows.
  

Education & Experience

• Diploma or Degree in Computer Science, Information Technology, or related field.
• Minimum 2+ years in IT (with a related University Degree) or 7+ years in IT (with a three-year College Diploma).
• Enterprise-level Linux expertise (Ubuntu and/or RedHat) is essential.
• Certifications (e.g., MCSE, CISSP) are strong assets.
  

Specialized Skills

• Proven track record as a Linux SME in installation, tuning, and operational support.
• In-depth experience with HPC clusters and job scheduling tools such as Slurm, LSF, or GridEngine.
• Strong knowledge of KVM or similar hypervisors.
• Working understanding of network systems, protocols, and standards including Active Directory integration.
• Identity management experience (Microsoft Identity Manager, Azure AD Connect).
• Solid scripting skills (Bash required; additional scripting languages are an asset).
• Experience applying advanced troubleshooting to resolve performance, configuration, or security issues.
• Excellent problem-solving, organizational, and documentation skills.
• Ability to communicate clearly with both technical and non-technical stakeholders.
• Bilingualism (English/French) is an asset.
• Microsoft Windows knowledge is an asset.
  

Decision Making & Supervision

• Operate with minimal supervision while making decisions based on analysis, troubleshooting, and established procedures.
• Coordinate with helpdesk, networking, platform, and security teams to ensure alignment of upgrades, patches, and operations.
  

Working Conditions

• Comfortable office environment with periodic physical tasks (e.g., installing hardware).
• Requires appropriate security clearance.
• Must be willing to provide occasional off-hours support and participate in on-call rotation.

, : Matheo Theodossiou