Senior Manager of IT Infrastructure

SECURITY INDUSTRY SPECIALISTS INC•Austin, TX

2d•$150,000 - $150,000•Onsite

About The Position

The Senior Manager of IT Infrastructure leads the strategy, security, and continuous improvement of SIS's cloud-first IT infrastructure across the Americas. This leader owns the company's Cloud, Systems Administration, Networking, and Help Desk functions and is accountable for advancing SIS's Zero-Trust strategy, in which all access is verified, identity is the perimeter, and the environment is centrally managed, monitored, and documented. SIS operates a predominantly Apple environment (approximately 90% macOS) supporting a 24/7 Global Security Operations Center, so the ideal candidate pairs senior leadership ability with hands-on depth in modern cloud, identity, endpoint, and network platforms. Working within an ITIL-based operational framework, the Senior Manager of IT Infrastructure sets technical direction, develops the team, guides IT policy and purchasing decisions, and partners with leadership to deliver a reliable, secure, and scalable platform. This role reports directly to the Director of Technology. This position leads a multi-site team that includes a Help Desk Manager, Help Desk Staff, Systems Administrator, Network Administrators, and the newly created Senior Cloud Administrator roles across Culver City, Austin, Seattle, San Jose, New York, and LATAM.

Requirements

Bachelor's degree in Information Technology, Computer Science, or a related field; equivalent combination of education and professional experience will be considered
12+ years of progressive IT experience, with at least 5 years in a people-leadership role overseeing technology operations teams
Demonstrated experience leading cloud-first IT infrastructure in a predominantly Apple/macOS environment (approximately 90% Mac) with some Windows
Deep experience deploying and administering enterprise SaaS and cloud platforms (such as Google Workspace, Box, AWS, and Azure)
Proven experience with modern identity and access management, including Active Directory/Entra ID and a modern IdP (Okta, Ping, JumpCloud, or similar), with Single Sign-On, MFA, and automated lifecycle provisioning
Strong working knowledge of endpoint management and security tooling, such as JAMF, Windows MDM, SentinelOne, and vulnerability management platforms
Hands-on experience modernizing network environments, including firewalls, switching, wireless, and SD-WAN; experience with cloud-managed, single-pane platforms such as Cisco Meraki is a strong plus
Firm grasp of Zero-Trust networking concepts and implementations, including certificate-based Wi-Fi, least-privilege access, and centralized logging
Experience implementing or operating a SIEM and supporting security operations and incident response
Working knowledge of ITIL operational processes (incident, problem, change, and configuration management) and the ability to lead within a structured operations environment
Solid understanding of networking fundamentals including DNS, DHCP, TCP/IP, VPN, and firewall administration
Proven track record with endpoint protection, patch management, vulnerability remediation, and disaster recovery, business continuity, and backup strategies
Previous experience operating within high-availability environments with 24/7 uptime requirements
Excellent troubleshooting, documentation, and communication skills, with the ability to deliver a high level of customer service
Must be a dependable team player with business maturity and enthusiasm, able to work both independently and collaboratively

Nice To Haves

Industry certifications preferred (e.g., AWS Solutions Architect, Okta Certified Administrator, Jamf Certified Tech, Microsoft, or similar)
Experience with network monitoring and management platforms (such as Auvik or similar) is a plus
Experience with automation tooling and platforms (such as Make, n8n, or Zapier) is a plus
Enterprise experience deploying and governing AI tools is a plus

Responsibilities

Lead and develop the Cloud, Systems, Networking, and Help Desk teams across North and South America, ensuring cohesive, efficient operations aligned with business needs and the technology roadmap
Set and execute the strategic roadmap for IT policy, infrastructure modernization, security, and purchasing, advancing the company's cloud-first, Zero-Trust strategy in which all access is verified
Own the identity and access management strategy, directing the migration to a centralized Identity and Access Management platform (for example, Okta, Ping, or JumpCloud) that delivers Single Sign-On, multi-factor authentication, risk-based authorization, and automated joiner/mover/leaver lifecycle provisioning sourced from the authoritative HR system
Provide expert oversight and technical direction for enterprise cloud and SaaS platforms, including Google Workspace, Box, AWS, and Microsoft Azure, ensuring availability, performance, security, and data governance
Direct endpoint and security management across a predominantly Mac environment (approximately 90% macOS, balance Windows), including JAMF for Apple device management, Windows MDM, and SentinelOne, ensuring devices are encrypted, current, properly configured, monitored, and generating actionable alerts
Lead the modernization of the network environment toward a single-vendor, single-pane-of-glass architecture (for example, Cisco Meraki) designed for high availability, including resilient firewalls, N+1 switching, wireless, certificate-based Wi-Fi, and built-in SD-WAN
Establish centralized logging and integrate a Security Information and Event Management (SIEM) solution to correlate signals across identity, endpoint, cloud, and network, reducing time to detect and respond and supporting incident response
Mature the ITIL-aligned operational framework—incident, problem, change, and configuration management—and drive the development of documented policies, procedures, and runbooks
Own and drive best-in-class disaster recovery, business continuity, data protection, and backup strategies that support SIS's 24/7 enterprise
Partner closely with Security Operations Center (Fusion Center) leadership to deliver a unified physical and information security strategy aligned with customer needs, business objectives, and industry best practices
Drive lifecycle management and remediation initiatives across endpoints, infrastructure, and cloud services, including device encryption, OS currency, patching, and decommissioning of end-of-life hardware and software
Maintain accurate documentation of the environment and support audit and compliance objectives such as ISO 27001 and SOC 2
Collaborate with cross-functional teams and senior leadership to plan and execute major infrastructure projects, upgrades, and migrations with minimal disruption to internal and external customers
Act as the principal liaison for vendor negotiations on license renewals and hardware refreshes, optimizing expenditures across enterprise platforms and hardware
Mentor, train, and develop IT personnel, setting clear performance goals, objectives, and growth plans
Provide weekly, monthly, quarterly, annual, and ad hoc reporting on systems and team KPIs and other metrics to technology leadership and key stakeholders
Communicate complex technical information clearly to both operational security staff and senior executive leadership
Manage the departmental budget for infrastructure and operational expenditures
Perform other related duties as required