Overview We are seeking anIT Infrastructure & Security Specialistto join our IT Operations team. This role combinescloud infrastructure management, cybersecurity operations, networking, and L1/L2 technical support .The ideal candidate has strong experience managingMicrosoft 365, Azure, AWS infrastructure, networking, and enterprise systems , while also supporting internal users and maintaining secure, reliable IT operations in a fast-growing organization. The role also plays an important part in maintaining Frontier’ssecurity posture , including security tooling, monitoring, and internal security awareness initiatives.Key ResponsibilitiesInfrastructure & Cloud OperationsAdminister and maintainMicrosoft 365 servicesincluding Entra ID (Azure AD), Exchange Online, SharePoint, endpoint management, and security configurations.Support and maintainAzure and AWS cloud infrastructure , including virtual networks, access controls, system monitoring, and connectivity.Manage VPN connectivity, networking infrastructure, firewalls, and virtual networksto ensure secure and reliable connectivity across systems and users.Maintain andsupport SFTP servers and secure file transfer processesused for business integrations.Assist with maintenance, monitoring, and troubleshootingSQL databasessupporting internal applications and integrations.Administer andsupport VoIP and cloud telephony platforms (such as RingCentral) , including user provisioning, call routing, integrations, and troubleshooting.CybersecurityAdminister and monitorMicrosoft Defender and other enterprise security platformsused for endpoint, identity, and email protection.Investigate security alerts, assist with incident response, and support vulnerability remediation and access management practices including MFA enforcement.Help maintain Frontier’s overallsecurity posturethrough monitoring, policy enforcement, and collaboration with leadership on security initiatives.Lead internal security awareness initiatives , including employee security training programs and simulated phishing campaigns.Coordinate with external security vendors to conduct periodic penetration testing and vulnerability assessments, including managing testing scope, scheduling, remediation tracking, and follow-up verification.IT Support & Business SystemsProvide L1–L2 technical supportfor employees across the organization, troubleshooting issues related to Microsoft 365, ERP, networking, and SaaS platforms.Manage user provisioning, permissions, device setup, and access controls across enterprise systems.Collaborate with internal teams to resolve system issues, improve reliability, and document processes and solutions.Required Qualifications5–7+ years of experiencein IT infrastructure, systems administration, or similar roles.Hands-on experience administeringMicrosoft 365 environments , including identity and security management.Experience managingAzure and AWS cloud infrastructure .Strong knowledge of networking, VPNs, firewalls, and virtual networks.Experience supporting IT Helpdesk / L1-L2 support in a business environment.Experience maintaining SFTP servers and secure file transfer processes.Experience with SQL database maintenance, backups, and troubleshooting.Experience supporting ERP systems (preferably Acumatica) and other SaaS business applications.Experience administeringMicrosoft Defender or comparable enterprise security platforms .Nice to HaveExperience with PowerShell or scripting for automationExperience working in e-commerce environmentsExperience supporting or maintaining infrastructure for chatbots, AI tools, or conversational platformsExperience supporting or maintaining data warehouse infrastructure and data pipelines#J-18808-Ljbffr