Yi Tam

About Yi Tam

I believe that honesty and humility are essential to personal and professional growth. In the field of information technology, continuous learning is not optional but a prerequisite for success. As advancements in artificial intelligence continue to reshape the industry, I strive to leverage these tools to enhance efficiency and productivity while maintaining critical thinking and avoiding over-reliance. Professional Experience20+ years of working within SCIFs and air-gap environments for IC, DOD, NRO19+ years of System administration and engineering from legacy to secure cloud.15+ years of Virtualization experiences with Hyper-V, VMware, Nutanix, Openstack.15+ years of lifecycle managements following ITIL.15+ years performing vulnerabilities scans and applying STIGS for compliance, acceptance and accreditation15+ years design, build, deploy of servers for Production, Lab, Sandbox, Development15+ years of writing test procedures, SOPs, POAM and documentation15+ years of deploying, patching, hardening and supporting Windows products15+ years of documentation creation, update, validate and presentation. 15+ years of automation with scripts (powershell, bash, ansible, batch)10+ years evaluating technology products against requirement matrix and provide trade off comparison base on cost, features, time and reliability. 10+ years of system optimization for on-prem air-gap environments. 7+ years of deploying, patching, hardening and supporting Redhat servers7+ years packaging, deployment application and patches.(SCCM, MECM, WSUS)5+ years of designing backup solutions to meet RTO, RPO, HA and DR5+ years of supporting Atlassian products (Jira & Confluence)3+ years of Network administration of Cisco switch, routers and firewall.3+ years of system architecture and design 3+ years of Agile and DevOps methodologies 2 years sitting on Change management board1 year of DevSecOps with CI/CD utilizing Ansible and git Department of Defense TS/SCI CI Poly Security Clearance: ACTIVE Certifications: ActiveCompTIA Security + CECommVault Certified ProfessionalNetwork+, A+InactiveVCP-DCV (6.0,5.1,4.1)CCNA(expired)CCNA Security(expired)

Experience

1. System Engineering, Advisor

   Peraton

   Sep 2022 — Present · VA, US

   OverviewServed as a Systems Engineer and Technical Advisor supporting a government secure cloud initiative, integrating multiple Special Access Programs (SAPs). Applied Agile SAFe and DevSecOps methodologies to design, implement, and deliver secure, scalable solutions aligned with mission and compliance requirements.ResponsibilitiesEngineered and deployed enterprise solutions including Active Directory Federation Services (ADFS), PKI digital signature infrastructure, Cameo Teamwork Cloud, and Commvault backup platforms Designed and executed system migrations to support disaster recovery (DR) and high availability (HA) requirements Leveraged Agile SAFe practices to deliver incremental features and enhancements within a secure cloud environment Applied DevSecOps principles to integrate security into the full system development lifecycle Collaborated with vendors to obtain quotes, procurement, and solution alignment with technical requirements Participated in SCRUM ceremonies (daily stand-ups, sprint planning, retrospectives) to support team delivery and transparency Utilized Ansible to automate deployment of RHEL and Windows Server systems for lab validation and production environmentsAccomplishments2023: Designed and deployed Cameo Teamwork Cloud with a Cassandra backend, supporting both lab and production environments 2024: Architected and implemented Commvault backup solutions, ensuring scalability across multiple clients and environments 2025: Remediated STIG findings and updated system documentation to achieve Certification and Accreditation (C&A) compliance 2025: Rebuilt Microsoft Exchange environment, migrated data stores, and produced detailed configuration documentation for both lab and production systems

Education

• Bellevue University

  System and Networking Administration, Computer Science

  2011 — 2014

Skills

• Switches
• Microsoft Exchange
• Network Security
• Sharepoint
• Networking
• Security
• Cisco Ios
• Active Directory
• Windows Server
• Information Security
• Ccna
• Windows Xp
• Information Technology
• Troubleshooting
• Cisco Technologies
• Dns
• Vmware
• System Administration
• Firewalls
• Information Assurance
• Security Clearance
• Virtualization
• Routers
• Servers
• Dhcp
• Tcp/Ip