Senior Systems Administrator

Senior Systems AdministratorWe are seeking an experienced Senior Systems Administrator to support and modernize enterprise infrastructure across both on-premises and cloud environments. This role is responsible for maintaining the reliability, security, scalability, and performance of critical IT systems while helping drive cloud adoption and infrastructure modernization initiatives.The ideal candidate will bring strong expertise in systems administration, virtualization, networking, storage, Active Directory, and firewall management, along with hands-on experience supporting cloud platforms such as AWS, Azure, or Google Cloud Platform (GCP). This is an excellent opportunity for a self-motivated IT professional who enjoys working across diverse technologies in a hybrid infrastructure environment.Key ResponsibilitiesAdminister, maintain, and troubleshoot Windows and Linux server environments.Manage enterprise networking infrastructure and ensure optimal performance, reliability, and security.Configure and maintain firewall policies and security controls.Monitor system health, availability, and performance across on-premises and cloud environments.Perform operating system upgrades, patch management, and infrastructure maintenance.Support and manage VMware virtualized environments.Administer hybrid cloud infrastructure across AWS, Azure, GCP, or similar cloud platforms.Design, deploy, and maintain cloud-based infrastructure, networking, security, and monitoring solutions.Develop automation solutions and Infrastructure as Code (IaC) deployments to improve operational efficiency.Conduct system audits and ensure compliance with security and operational standards.Troubleshoot and resolve infrastructure issues while providing high-quality technical support.Maintain documentation including system configurations, architecture diagrams, operational procedures, and project updates.Manage Active Directory, domain controllers, DNS, DHCP, and Group Policy Objects (GPOs).Support enterprise storage technologies and backup solutions.Coordinate with vendors and third-party service providers.Participate in infrastructure upgrades, migrations, and cloud transformation projects.Collaborate with technical teams and stakeholders to deliver infrastructure solutions and support business objectives.