Senior IT Infrastructure Engineer

Select Water Solutions • Houston, TX

1d • Onsite

About The Position

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.

Requirements

• 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 Directory, Microsoft Entra ID, Microsoft 365, Exchange Online, Teams, SharePoint Online, OneDrive, and related identity, collaboration, security, and compliance services.
• Strong experience with: Windows Server 2019/2022/2025, Active Directory, Microsoft Entra ID, VMware vSphere, Azure Infrastructure Services, Enterprise storage solutions, Backup and recovery platforms.
• Strong experience administering Microsoft 365 services, including Exchange Online, Teams, SharePoint Online, OneDrive, Microsoft Entra ID, licensing, security, compliance, retention, and governance using Microsoft 365 admin centers and PowerShell.
• Strong understanding of user access management principles, RBAC, and least privilege concepts.
• Strong problem-solving and analytical skills to troubleshoot access-related issues and security incidents.
• Experience supporting infrastructure compliance requirements, audit readiness, evidence collection, and control remediation activities in regulated or security-sensitive environments.
• Effective communication and interpersonal skills to work collaboratively with cross-functional teams and end-users.
• Advanced understanding of networking concepts including TCP/IP, DNS, VLANs, VPNs, routing, and firewalls.
• Proficiency with cloud security concepts, governance and technologies.
• Hands-on experience with Azure DevSecOps and ability to integrate security practices into development workflows.
• Strong understanding of cybersecurity principles and infrastructure hardening.
• Experience creating automation using PowerShell or Python.

Responsibilities

• 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.

Benefits

• Medical, dental, vision, coverage in addition to life and disability insurance plans.
• Paid Vacation Days and Paid Holidays.
• Retirement and Savings (401K) Plan with Company match.
• Referral bonus with no cap on amount of referrals.
• Paid Training.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior