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Senior IT Infrastructure Engineer

Select Energy Services
United Statesfull_timeVerifiedPosted 11 Aug 2026

About the role

SENIOR IT INFRASTRUCTURE ENGINEER

Job Details
Full Time / Part Time: Full Time
FLSA Classification: Exempt
Business Unit: IT
Reports to: Director, IT Infrastructure & Cybersecurity
Travel Requirement: Yes

JOB DESCRIPTION

The Senior IT Infrastructure Engineer is responsible for the design, implementation, operation, and security of the organization's hybrid infrastructure environment, including on-premises data centers, cloud platforms, networking, virtualization, storage, and identity services. This role serves as a senior technical resource responsible for ensuring high availability, scalability, performance, and cybersecurity across all infrastructure systems.

The ideal candidate possesses deep expertise in Microsoft technologies, virtualization, networking, cloud services, cybersecurity best practices, and infrastructure automation. The Senior IT Infrastructure Engineer will collaborate closely with cybersecurity, application, and business teams to deliver secure and resilient technology solutions that support business operations.

The essential job functions include, but are not limited to
• Design, implement, and maintain enterprise infrastructure across on-premises and cloud environments.
• Manage Windows Server, Linux, Active Directory, Office365, Microsoft Entra ID, DNS, DHCP, PKI, Group Policy, and related services.
• Administer virtualization platforms (VMware vSphere).
• Manage SAN, NAS, backup systems, disaster recovery platforms, and storage infrastructure.
• Develop and maintain infrastructure standards, documentation, and operational procedures.
• Ensure infrastructure scalability, performance, and high availability.
• Architect highly available, fault-tolerant, and scalable cloud solutions.
• Design and implement enterprise-scale Azure landing zones and subscription architectures.
• Develop hybrid infrastructure solutions by integrating on-premises data centers with Azure services.
• Design and support Microsoft Azure environments, including: Virtual Networks, Network Security Groups, Azure Resources Groups, Azure Firewall, Azure Site Recovery, Azure Backup, Azure Storage, Azure Virtual Machines, Microsoft Entra ID, Azure Virtual Desktop (AVD), Azure Storage Accounts, Azure Files, Azure NetApp Files, Azure Backup, Azure Site Recovery, Azure Key Vault, Azure Bastion, Azure Load Balancer, Azure Application Gateway, Azure Front Door, Azure DNS, Azure Monitor
• Support hybrid cloud connectivity between on-premises and cloud environments.
• Lead cloud migration, modernization, and optimization initiatives.
• Implement infrastructure security controls aligned with NIST, CIS, and industry best practices.
• Manage: Identity and access management, multi-factor authentication, privileged access controls, certificate management.
• Support vulnerability management, remediation, patch management, and security auditing.
• Partner with Cybersecurity team to investigate security events and support incident response activities.
• Implement security measures across the Azure environment, including Microsoft Defender for Cloud, Network Security Groups (NSGs), and Key Vault.
• Conduct regular security reviews and risk assessments of infrastructure platforms.
• Deploy and maintain infrastructure monitoring solutions.
• Create and support automation solutions using: PowerShell, Python, Azure Automation, Infrastructure-as-Code tools.
• Develop proactive monitoring, alerting, and reporting capabilities.
• Develop and maintain disaster recovery procedures.
• Perform periodic recovery testing.
• Ensure compliance with Recovery Point Objectives (RPO) and Recovery Time Objectives (RTO).
• Serve as a senior escalation point for infrastructure incidents.
• Lead infrastructure projects from planning through implementation.
• Provide mentorship and technical guidance to engineers and administrators.
• Evaluate emerging technologies and recommend strategic improvements.

Other duties
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

Requirements
To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required:
• Bachelor's degree in computer science, Information Technology, or related field (or equivalent experience).
• 8+ years of progressive IT infrastructure experience.
• 5+ years supporting enterprise Microsoft environments including Windows Server, Active Direc

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Company

Select Energy Services

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