KHANH M. TRUONG
Monument
Summary
Results oriented UNIX Systems Administrator with M.B.A., Electrical Engineering degrees and 20+ years experience. Strengths include abilities to learn quickly, easily adapt to new requirements and give strict attention to detail. Clear, concise oral and written communication skills.
Overview
26
26
years of professional experience
1
1
Certification
Work History
Senior UNIX Systems Administrator/Senior Devops Engineer
Cobank
Greenwood Village, Colorado
08.2019 - Current
- Provided system administration support for over 500 on-premises and AWS-based UNIX servers, including Solaris, RHEL, and AIX environments.
- Automated monthly UNIX OS patching using Ansible playbooks, ensuring compliance and minimizing manual intervention.
- Performed LEAPP upgrades from RHEL 7 to RHEL 8 for over 300 RHEL servers, including pre-upgrade assessments, remediation, and post-upgrade validation.
- Developed and maintained shell scripts and Ansible playbooks to automate routine system administration tasks.
- Automated server inventory collection using custom shell scripting solutions.
- Built and deployed virtual machines from scratch in VMware environments, including provisioning, OS installation (RHEL and Solaris), storage allocation, network configuration, template creation, cloning, and post-build hardening.
- Managed end-to-end VM lifecycle processes, including capacity planning, provisioning, patching, performance monitoring, Cohesity backup coordination, decommissioning, and documentation.
- Performed physical server deployments in the data center, including racking and stacking hardware, cabling, configuring RAID/storage, installing UNIX operating systems, applying security hardening, and promoting systems into production environments.
- Remediated security vulnerabilities using Kenna and Qualys, ensuring UNIX server compliance with security standards.
- Administered RHEL OpenShift clusters, supporting containerized workloads and platform operations.
- Managed Mimecast email administration, including policies, security configurations, and mail flow troubleshooting.
- Led migration initiatives converting on-premises servers to AWS cloud infrastructure.
- Managed Identity and Access Management (IAM), including user provisioning, access control, and compliance for UNIX environments.
Senior UNIX Systems Administrator
ORACLE/SUN MICROSYSTEMS, INC.
Broomfield, Colorado
08.2000 - 11.2018
- Responsible for deploying and managing all hardware and software infrastructure within enterprise data centers, ensuring high availability and operational efficiency.
- Led extensive cross-functional collaboration with application, network, and security teams to deploy and support developer platforms within Oracle data centers.
- Managed all aspects of systems administration for the Denver and Broomfield data centers, supporting over 4,000 physical servers and 35,000 virtual machines running Solaris, Linux, and Windows.
- Built and managed virtual environments using LDOMs, VMware, and Oracle VM Manager to provision infrastructure for development and QA teams.
- Administered Kubernetes clusters, including deployment, scaling, monitoring, troubleshooting containerized workloads, and managing cluster upgrades and security configurations.
- Developed shell scripts to automate routine administrative tasks, improving operational efficiency and reducing manual workload.
- Led migration initiatives from legacy physical Solaris/Linux systems to LDOM and virtualized infrastructures, improving scalability and resource utilization.
- Performed capacity planning by monitoring system performance and data center resource utilization to forecast growth and determine infrastructure limits.
- Executed UNIX security management, including vulnerability scans, remediation efforts, and compliance enforcement.
- Managed quarterly and weekly patching cycles for hypervisors and operating systems to maintain system stability and security compliance.
- Administered Veritas NetBackup for backup and recovery of critical systems, ensuring data integrity and disaster recovery readiness.
- Contributed to strategic initiatives converting on-premise data center infrastructure to AWS cloud environments.
- Utilized JumpStart and Puppet for automated system provisioning, configuration management, and standardization.
Education
MBA - Information Systems
University of Colorado
Colorado Springs, Colorado01-2003
BS - Electrical Engineering
University of Colorado
Boulder, Colorado01-1996
Skills
- AWS Cloud Practioner certified
- OVM – Oracle Virtual Manager
- Solaris 11 Administration
- Solaris System Performance Management
- Veritas Volume Manager
- ZFS Administration
- NFS Administration
- VMware
- Certified Oracle Solaris System Administrator
- Certified Redhat Linux System Administrator
- Kubernetes
- Splunk
- Terraform
- ServiceNow
Certification
• Certified Oracle Solaris System Administrator
• Certified Redhat Linux System Administrator
Timeline
Senior UNIX Systems Administrator/Senior Devops Engineer
Cobank
08.2019 - Current
Senior UNIX Systems Administrator
ORACLE/SUN MICROSYSTEMS, INC.
08.2000 - 11.2018
BS - Electrical Engineering
University of Colorado
MBA - Information Systems
University of Colorado