Mid/Sr System Administrator - Infrastructure, Security

About Seamless.insure: Seamless.insure is an end-to-end SaaS-based insurance management platform designed to empower underwriters and distributors with efficiency, compliance, and superior customer experiences. Our platform is adaptable, innovative, and crafted to address the complexities of the insurance sector. We are seeking a Senior System Administrator – Infrastructure & Security to take a leading role in managing, optimizing, and securing our IT systems and cloud environments. This role combines deep technical knowledge across infrastructure, Microsoft ecosystems, and security operations, with a strong focus on reliability, compliance, and user support. You’ll work closely with cross-functional teams to ensure business continuity and infrastructure excellence.Key Responsibilities: System & Infrastructure Management  Administer, monitor, and maintain enterprise-level infrastructure (servers, networks, endpoints).  Diagnose, troubleshoot, and resolve hardware, software, and connectivity issues.  Design, configure, and maintain Microsoft Office 365 (Microsoft 365 Administrator (Expert), Designs Entra ID, MFA, PIM)  Manage Active Directory (including inter-forest migrations, upgrades, and AD Connect deployments).  Implement automation and configuration management tools to drive operational efficiency.  Plan and execute high-availability and disaster recovery solutions.  Security Operations & Compliance  Collaborate with DevSecOps and TA teams to ensure secure server configurations.  Monitor and manage enterprise Anti-Virus platforms and vulnerability remediation efforts.  Administer and maintain SIEM solutions for log collection, threat detection, and incident correlation.  Enforce security policies, compliance configurations, and data loss prevention (DLP) controls.  Office 365 & Cloud Services Administration  Oversee Microsoft 365 services including:  Microsoft Intune (device management and endpoint compliance)  Microsoft Entra ID (Azure AD) (identity, SSO, access control, MFA, PIM)  Exchange Online, SharePoint Online, Power Automate, and Microsoft Forms  Implement and manage policies related to compliance, email security, and information governance.  Support integration and governance across Microsoft workloads (Entra, Intune, Defender, Purview, Exchange, Teams).  Operational Support & Communication  Provide advanced support for infrastructure-related incidents and service requests.  Collaborate with end-users and IT support teams to deliver effective IT solutions.  Lead root cause analysis, documentation, and follow-up on incidents and outages.  Governance & Documentation  Maintain documentation for infrastructure design, standard operating procedures (SOPs), and change logs.  Support internal/external audits by providing system evidence, logs, and reports.  Contribute to IT policy development and security awareness efforts.