Senior Systems Administraror

Aspire Software

Key Responsibilities

• Administer Windows Server and Linux VM environments Ubuntu/RHEL, ensuring high availability, performance, and security compliance
• Administer Dell blade server environments and enterprise SAN/NAS storage performance tuning and capacity planning
• Oversee VMware vSphere environment including ESXi hosts, vCenter, and VM lifecycle management
• Maintain high availability configurations and ensure infrastructure resilience for production systems
• Lead regular maintenance windows, patching cycles, and hardware lifecycle planning

SQL Server Administration (Must-Have)

• Manage and maintain SQL Server databases across multiple environments dev, staging, QA, production
• Administer SQL Server Always On Availability Groups and/or Failover Cluster Instances
• Perform database performance tuning, index optimization, and query analysis
• Execute and validate backup, restore, and DR procedures for SQL environments
• Partner with development teams to troubleshoot slow queries and support schema changes
• Manage SQL security, roles, permissions, and auditing best practices

Windows / IIS Administration (Must-Have)

• Manage and maintain IIS web server configurations for .NET applications across multiple servers
• Administer application pools, SSL certificate bindings, and site configurations
• Troubleshoot IIS performance issues, 500-series errors, and application layer problems
• Support Active Directory, DNS, DHCP, Group Policy, and Windows Server services

DevOps & Automation

• Maintain and improve CI/CD pipelines supporting application deployments TeamCity, Octopus Deploy, or similar
• Write and maintain automation scripts to reduce manual operational work PowerShell, Bash, Python
• Manage Docker-based containerized workloads and support container orchestration
• Support Infrastructure as Code practices for environment provisioning and configuration management
• Collaborate with development teams to streamline deployment processes and improve release reliability

Cloud & Hybrid Infrastructure

• Manage cloud-hosted environments on Azure, AWS and GCP VMs, backups, region-specific customer environments
• Administer Veeam Backup for both local NAS and cloud-based backup targets
• Support hybrid connectivity, VPN management, and cross-region performance
• Optimize cloud resource usage and manage costs across environments

Networking & Security

• Manage firewalls, VLANs, routing, and network segmentation in a datacenter environment
• Oversee HAProxy or similar load balancing configurations across web and application tiers
• Enforce security policies, conduct access reviews, and support compliance requirements
• Manage SSL certificate lifecycle across internal and customer-facing services

Monitoring & Incident Response

• Maintain infrastructure and application monitoring using tools such as Zabbix, LogicMonitor, Graylog, or similar
• Lead root cause analysis for production incidents and communicate findings to stakeholders
• Provide on-call support for critical infrastructure issues Document runbooks, incident response procedures, and system configurations

• SQL Server SQL Server 2PHONE_NUMBER, Always On AG or FCI, performance tuning, T-SQL, backup/restore, SSMS
• IIS / Windows IIS 8.5+, .NET application hosting, app pool management, SSL configuration, Windows Server 2016+
• Linux Ubuntu / Red Hat / CentOS server administration, shell scripting, service management
• Experience 3 5+ years in a Senior Sysadmin or Infrastructure Engineer role in a production environment