Job descriptionLinux administrator
Location : Minneapolis, MN
FTE
Roles & Responsibilities
Linux System Administrator
We are seeking an experienced Linux System Administrator to manage, maintain, and optimize our Linux-based infrastructure. The ideal candidate will ensure the reliability, security, and performance of our server environments while supporting development teams and business operations with robust, scalable systems.
Key Responsibilities
System Administration & Management
• Install, configure, and maintain Linux servers across multiple distributions (RHEL, CentOS, Ubuntu, Debian, SUSE)
• Manage physical, virtual Linux environments (VMware)
• Perform system updates, patches, and security hardening following best practices
• Configure and manage system services, daemons, and startup processes (systemd, init.d)
• Implement and maintain user account management, access controls, and sudo policies
• Monitor system performance, resource utilization, and capacity planning
• Manage disk storage, LVM, filesystems, and partition schemes
• Configure and optimize kernel parameters and system tuning Server Infrastructure & Deployment
• Deploy and provision new Linux servers using automation tools and kickstart/preseed configurations
• Manage server lifecycle from provisioning to decommissioning
• Implement load balancing and failover mechanisms
• Manage virtual machine environments and hypervisors
• Optimize server performance through tuning and resource allocation
Networking & Connectivity
• Configure network interfaces, routing, VLANs, and bonding/teaming
• Manage firewalls using iptables, firewalld, or nftables
• Configure DNS, DHCP, and network services
• Implement VPN solutions (OpenVPN, IPsec, WireGuard)
• Troubleshoot network connectivity and performance issues
• Configure SELinux/AppArmor security policies
• Manage SSL/TLS certificates and key management
Storage & Backup Management
• Configure and manage local and network storage (NFS, CIFS/Samba, iSCSI)
• Implement RAID configurations and disk redundancy
• Manage logical volume management (LVM) and filesystem optimization
• Design and implement backup and recovery strategies
• Configure and maintain backup solutions (rsync, Bacula, Amanda, Veeam, Commvault)
• Perform regular backup testing and disaster recovery drills
• Manage data retention policies and archival strategies
Security & Compliance
• Implement security best practices and hardening standards (CIS benchmarks, STIG)
• Configure and manage authentication systems (LDAP, Active Directory integration, Kerberos)
• Implement SSH key management and secure remote access
• Configure intrusion detection/prevention systems (IDS/IPS)
• Perform regular security audits and vulnerability assessments
• Manage security patches and emergency updates
• Implement file integrity monitoring (AIDE, Tripwire)
• Configure audit logging and centralized log management
• Ensure compliance with security policies and regulatory requirements (PCI-DSS, HIPAA, SOC 2)
Monitoring & Performance Tuning
• Implement comprehensive monitoring using tools like Datadog
• Configure alerting for critical system events and thresholds
• Monitor system logs using centralized logging solutions (ELK Stack, Splunk, rsyslog)
• Analyze system performance metrics (CPU, memory, disk I/O, network)
• Optimize system performance through kernel tuning and resource management
• Troubleshoot performance bottlenecks and resource contention
• Implement capacity planning based on growth trends
Automation & Scripting
• Develop shell scripts (Bash, Python, Perl) for automation and task scheduling
• Develop monitoring scripts and health check utilities
• Automate backup and recovery procedures
Web & Application Server Management