Senior Infrastructure Engineer

Job Summary

The Senior Infrastructure Engineer is responsible for designing implementing and supporting a resilient secure and scalable enterprise infrastructure environment. This role provides advanced technical leadership across onpremises and cloud platforms including compute storage networking identity and VDI services while ensuring high availability and operational excellence.

The position requires solid hands-on experience with cloud hypervisor storage security automation and virtual desktop Infrastructure including Citrix environments to support application and desktop delivery needs. The Senior Infrastructure Engineer collaborates closely with architecture security and operational teams to troubleshoot complex issues lead infrastructure initiatives and continuously seeks to improve system performance reliability and compliance.

This role also contributes to infrastructure standards documentation disaster recovery planning and mentorship while serving as an escalation point for critical incidents and complex technical challenges.

Job Responsibilities

• Design build and maintain highly available infrastructure across compute storage virtualization and core services.
• Lead or contribute to infrastructure roadmaps including technology refresh capacity planning lifecycle and cyber security management.
• Serve as a senior escalation point for time sensitive incidents and recurring problems; drive root-cause analysis (RCA) and corrective actions.
• Support virtualization platforms (e.g. VMware vSphere HyperV Nutanix AHV) including clusters resource pools templates and HA/DRS concepts
• Administer and engineer Microsoft core services including Active Directory DNS DHCP Group Policy and certificate services (PKI)
• Harden and maintain server OS baselines (Windows Server/Linux) including security configurations service accounts and privileged access models
• Partner with network teams to ensure proper connectivity segmentation routing firewall rules and load-balancing requirements for infrastructure services.
• Support troubleshooting of cross-domain issues (DNS MTU TLS/certificates proxy behavior latency) impacting application delivery and user experience
• Operate and troubleshoot Citrix reliably assist with upgrades/expansions and collaborate with specialists/architects when needed.
• Provide administration and support for Citrix environments such as Virtual Apps and Desktops (onprem or Citrix Cloud) including:
• Monitoring health usage and session performance.
• Supporting day-to-day operational tasks (catalogs/delivery groups user assignments policies). Including logon delays profile issues printer mapping session disconnects application launch failures HDX / performance problems.
• Logon delays profile issues printer mapping session disconnects application launch failures HDX / performance problems.
• Implement infrastructure hardening practices (CIS-style NIST ISO 27001 controls where applicable) vulnerability remediation and secure configuration baselines.
• Maintain accurate documentation - diagrams inventories CMDB updates service maps dependencies and operational runbooks.
• Lead and deliver infrastructure project workstreams end-to-end: discovery design build test cutover and transition to operations.
• Experience with enterprise backup and recovery platforms (e.g. Commvault Veeam Zerto or similar including CR & DR testing)
• Demonstrated experience working within formal change management and operational governance processes.
• Mentor and coach; provide technical guidance and peer review for designs scripts and operational procedures.
• Promote best practices and operational discipline (post-incident reviews problem management continuous improvement)
• Participate in cloud migration initiatives landing zone and other hybrid infrastructure landscape enhancements
• Works in a safe manner collaborating as a team member to achieve all outcomes.
• Demonstrate Behaviours that exhibit our organizational Values: Integrity Courage Teamwork and Innovation.
• Ensure personal adherence with all compliance programs including the Global Business Ethics and Compliance Program Global Quality policies and procedures Safety and Environment policies and HR policies.
• All other relevant duties as assigned.

Job Requirements

• Education

• Bachelors degree in Computer Science Information Technology Engineering or equivalent practical experience

• Certifications (Desired Not Mandatory):
  • Microsoft certifications (e.g. Azure Administrator Windows Server Identity)
  • VMware Hyper-V or Nutanix certifications
  • Citrix certifications (CCA CCP)
  • Linux certifications
  • ITIL Foundation or equivalent service management knowledge
• Knowledge Skills and Abilities
  • Lead complex technical initiatives end-to-end such as modernization cyber security and portfolio simplification
  • Provide hands-on experience administering supporting and migrating Citrix Virtual Apps and Desktops with NetScaler integration in an onprem and / or Citrix Cloud architecture.
  • Manage day-to-day Citrix operations (user access session issues application delivery).
  • Troubleshoot common Citrix-related issues such as logon delays profile problems printing issues session stability and application launch failures.
  • Support cloud hybrid infrastructure including:Landing Zone optimizationsInfrastructure as Code repositories and pipelines for Microsoft Azure (preferred) or AWS / GCPIaaS virtual machines storage networking and identity integrations.
  • Migrating and managing workloads that span onpremise and cloud environments
  • Administer Active Directory platform not exclusive to including domain controllers GPO ADFS PKI access control and management
  • Manage virtualization platforms - VMWare Hyper-V and Nutanix
  • Exhibit proficiency in the Cisco UCS Pure (Everpure) storage EMC NAS / SAN stack
  • Act as a senior escalation point for complex infrastructure incidents.
  • Troubleshoot across all infrastructure layers with expert capabilities.
  • Remediate outstanding security vulnerabilities and enhance the patch management processes.
  • Assist in the resolution of high priority issues and service requests
  • Perform annual DR & CR testing outlining RPO/RTO requirements defining recovery sequencing and dependency mapping
  • Contribute to the formal change management and operational governance processes.
  • Work in a collaborative manner across cross-functional teams
  • Demonstrate a strong analytical and problem-solving mindset.
  • Be well-organized proactive and show the ability to manage competing priorities.
  • Demonstrate ownership and accountability of outcomes
• Experience
  • 15 years of Senior Infrastructure experience
  • 10 years of progressive experience in infrastructure engineering or systems administration roles within multi-tier infrastructure enterprise environments
  • 7 years of leading complex projects and teams particularly targeted towards modernization and security efforts
  • Nice to have - pharma / manufacturing background as well as knowledge of regulatory compliance and industrialized OT (operational technology) environments
  • Background in mergers acquisitions and divestitures infrastructure playbook activities