Systems Administrator (SysAdmin) Cover Letter Examples & Writing Guide

Dear Hiring Manager, I am writing to express my strong interest in the Senior Systems Administrator position at Microsoft. With 8 years of experience managing enterprise Windows environments and Microsoft Certified: Windows Server Hybrid Administrator certification, I am excited to contribute to the company that creates the technology I work with daily. In my current role as Lead Systems Administrator at JPMorgan Chase, I have successfully: • Managed 5,000+ Windows servers across on-premise and Azure cloud environments • Implemented Active Directory infrastructure supporting 50,000+ users globally • Automated server provisioning and configuration using PowerShell and Azure Automation • Reduced system downtime by 70% through proactive monitoring and patch management • Built disaster recovery solutions with backup and restore procedures • Led Windows Server migration from 2012 R2 to 2019/2022 with zero business disruption Microsoft's vision of empowering every person and organization and commitment to enterprise technology excellence inspire me. I am particularly excited about working on hybrid cloud infrastructure solutions. I would welcome the opportunity to discuss how my Windows systems administration expertise can contribute to Microsoft's mission. Sincerely, Robert Johnson

Dear Hiring Team, I am excited to apply for the Linux Systems Administrator position at Red Hat. With 7 years of experience managing enterprise Linux infrastructure and Red Hat Certified Engineer (RHCE) certification, I am eager to contribute to the leader in open-source enterprise solutions. At IBM, I have managed Linux systems including: • Administered 2,000+ Red Hat Enterprise Linux servers supporting mission-critical applications • Built automated configuration management using Ansible for consistent server deployments • Implemented centralized logging and monitoring using ELK stack and Prometheus/Grafana • Designed high availability clusters using Pacemaker and Corosync • Performed system performance tuning achieving 40% improvement in application response times • Built infrastructure-as-code pipelines using Terraform and GitLab CI/CD Red Hat's commitment to open-source innovation and enterprise Linux leadership inspire me. I am particularly excited about working with OpenShift and hybrid cloud platforms. I look forward to discussing how my Linux expertise can contribute to Red Hat's customer success. Best regards, Sarah Martinez

Dear Hiring Manager, I am thrilled to apply for the Cloud Systems Administrator position at AWS. With 6 years of experience managing cloud infrastructure and AWS Certified SysOps Administrator certification, I am excited to help operate the world's most comprehensive cloud platform. In my role as Senior Cloud SysAdmin at Netflix, I have: • Managed AWS infrastructure including EC2, S3, RDS, and Lambda across multiple regions • Implemented infrastructure monitoring and alerting using CloudWatch and SNS • Automated operational tasks using AWS Systems Manager and Lambda functions • Built cost optimization strategies reducing cloud spend by 35% through rightsizing and Reserved Instances • Implemented security best practices including IAM policies, security groups, and encryption • Performed system backups, snapshots, and disaster recovery testing AWS's customer obsession and leadership in cloud computing inspire me. I am particularly excited about working on AWS infrastructure operations at scale. I would welcome the opportunity to discuss how my cloud systems administration expertise can contribute to AWS's mission. Sincerely, Michael Chen

Dear Hiring Team, I am writing to apply for the Systems Administrator position on Google's Corporate IT team. With 6 years of experience supporting enterprise IT infrastructure and expertise in Google Workspace administration, I am eager to help empower Google employees with reliable technology. At Salesforce, I have delivered IT systems including: • Managed Google Workspace for 10,000+ users including Gmail, Drive, and Calendar • Administered macOS and Chrome OS devices using Jamf Pro and Google Admin Console • Implemented SSO and identity management using Okta and Google Cloud Identity • Built IT service desk automation reducing ticket resolution time by 50% • Performed network infrastructure management including switches, wireless, and VPNs • Provided Tier 2/3 technical support for hardware, software, and network issues Google's innovation in technology and commitment to empowering employees inspire me. I am particularly excited about supporting Google's hybrid work environment. I look forward to discussing how my corporate IT expertise can support Google's employee experience. Best regards, Jennifer Park

Dear Hiring Manager, I am excited to apply for the Database Systems Administrator position at Oracle. With 7 years of experience managing database infrastructure and Oracle Database Administrator certification, I am eager to contribute to the leader in database technology. At Bank of America, I have managed database systems including: • Administered Oracle Database 12c/19c environments supporting critical financial applications • Implemented high availability using Oracle RAC and Data Guard for disaster recovery • Performed database performance tuning and optimization reducing query times by 60% • Automated database backups and recovery procedures using RMAN • Managed database security including user access, encryption, and auditing • Built monitoring and alerting systems for proactive database health management Oracle's legacy of database innovation and commitment to enterprise data management inspire me. I am particularly excited about working with Oracle Autonomous Database and cloud infrastructure. I would welcome the opportunity to discuss how my database systems expertise can contribute to Oracle's success. Sincerely, David Rodriguez

Dear Hiring Team, I am writing to express my interest in the Virtualization Systems Administrator position at VMware. With 6 years of experience managing virtualized infrastructure and VMware Certified Professional (VCP) certification, I am excited to contribute to the leader in virtualization technology. At Cisco, I have built virtualization infrastructure including: • Managed VMware vSphere environments with 1,000+ virtual machines across multiple clusters • Implemented vSAN for hyper-converged infrastructure reducing storage costs by 40% • Built automated VM provisioning using vRealize Automation and Ansible • Designed disaster recovery solutions using VMware Site Recovery Manager • Performed capacity planning and resource optimization for VM environments • Migrated physical servers to virtual machines (P2V) with minimal downtime VMware's innovation in virtualization and cloud infrastructure inspire me. I am particularly excited about working with VMware Cloud on AWS and modern application platforms. I look forward to discussing how my virtualization expertise can support VMware's mission. Best regards, Lisa Williams

Dear Hiring Manager, I am excited to apply for the Entry-Level Systems Administrator position at Dell Technologies. As a recent graduate with a B.S. in Information Technology from University of Texas and CompTIA Server+ certification, I am eager to start my IT career at a technology leader. During my internship at HP Enterprise and lab projects, I have: • Administered Windows Server environments including Active Directory, DNS, and DHCP • Configured user accounts, group policies, and security permissions in Active Directory • Performed server hardware installation, configuration, and troubleshooting • Implemented automated backups using Windows Server Backup and Veeam • Monitored system performance and created reports using PowerShell scripts • Provided technical support for server and network infrastructure issues My academic coursework included operating systems, networking, cybersecurity, and database management. I am passionate about learning new technologies and solving complex IT problems. Dell Technologies' commitment to innovation and enterprise solutions inspires me. I am particularly excited about learning from experienced systems administrators and obtaining advanced certifications. I would welcome the opportunity to discuss how my technical skills and enthusiasm can contribute to Dell's IT infrastructure team. Sincerely, Alex Thompson