Platforms
- Windows Server
- Linux (Ubuntu, RHEL, CentOS)
- macOS (legacy support)
Timothy Aaron Penner
Senior IT Infrastructure Engineer
Lathrop, CA
Professional Summary
Senior IT Infrastructure Engineer with 25+ years of experience (since 1999) designing, securing, and maintaining enterprise infrastructure across Windows and Linux environments.
Extensive experience with virtualization, SAN storage, firewall and VPN architecture, identity and MFA systems, monitoring platforms, and disaster recovery readiness.
Known for operational stability, disciplined change management, strong documentation, and root-cause analysis in production environments.
Core Skills
Virtualization
- Microsoft Hyper-V (clustered environments, live migration)
- VMware ESXi
- Proxmox
Identity & Security
- Active Directory
- MFA / IAM (Delinea / Centrify)
- Privileged Access Workflows
- Juniper SRX Firewall (NAT, site-to-site VPN, remote access VPN)
- Cisco Switching & Routing
Reliability & Operations
- Monitoring & Alerting Systems
- Incident Response
- Root Cause Analysis
- Patch Management (HCL BigFix)
- Backup & Recovery Systems
- Disaster Recovery Planning
- SAN / Fiber Channel Storage
Automation
- Terraform
- PowerShell
- Shell scripting
Professional Experience
Meta (Facebook) — Gaming Partner (Contract)
November 2019 – Present
- Operate and maintain high-availability real-time streaming production environment.
- Perform live troubleshooting and root-cause analysis.
- Monitor performance and bandwidth utilization to maintain uptime.
- Apply systems engineering principles to ensure reliability.
Penner.io / Independent IT Consulting — Consultant
January 2019 – Present
- Provide infrastructure consulting for Windows and Linux environments.
- Implement infrastructure-as-code using Terraform.
- Manage virtualization, DNS, mail systems, and automation workflows.
- Perform system hardening and performance optimization.
Transportation Insight — System Engineer
March 2022 – March 2023
- Project Lead for enterprise MFA rollout using Delinea/Centrify protecting 800+ servers.
- Onboarded 650+ users to TOTP authentication.
- Supported hybrid infrastructure across VMware, Hyper-V, Azure, AWS.
- Managed enterprise patching using HCL BigFix.
- Participated in on-call production support rotation.
4D, Inc. — Senior Technical Services Engineer
January 2016 – March 2021
- Led IT infrastructure operations and reliability.
- Administered Windows and Linux servers, AD, DNS, Hyper-V.
- Managed Cisco networking infrastructure.
- Administered Juniper firewall and VPN systems.
- Maintained monitoring and alerting systems.
- Provided Tier III escalation support.
- Delivered technical sessions at annual developer conference.
4D, Inc. — Technical Services Engineer
December 2006 – January 2016
- Sole IT infrastructure administrator for U.S. office.
- Consolidated 30+ physical servers into clustered Hyper-V virtual environment.
- Designed and deployed Juniper SRX firewall with NAT and VPN architecture.
- Maintained Fiber Channel SAN storage infrastructure.
- Implemented and validated backup systems including BackupPC and Barracuda appliance.
- Administered Active Directory, DNS, SMTP, Apache, Nginx, HAProxy.
- Designed and administered Asterisk PBX system.
- Supported infrastructure across office and colocation datacenter.
NVIDIA Corporation (Contract) — Desktop Support
November 2006
- Provided enterprise end-user technical support during major company event.
- Performed workstation troubleshooting and hardware deployment.
Independent IT Consulting — Consultant
July 2005 – November 2006
- Provided IT consulting services for small businesses.
- Delivered workstation support, structured cabling, printer configuration, and system maintenance.
- Performed malware remediation and infrastructure troubleshooting.
Ireland San Filippo, LLP (Sensiba LLP) — Network Engineer
March 2000 – July 2005
- Designed and implemented multi-tier Citrix MetaFrame terminal services environment.
- Administered Linux-based servers and core infrastructure systems.
- Managed enterprise backup operations across six Bay Area offices.
- Implemented and maintained Track-IT Enterprise helpdesk system with MS-SQL backend.
- Automated workstation patch deployment using Microsoft SUS server.
- Participated in deployment of Hummingbird Document Management System.
- Administered Altigen PBX and Blackberry Enterprise Server.
- Conducted security audits and infrastructure assessments.
Milestone Technologies, Inc. — De-Install / Re-Install Technician
September 1999 – November 1999
- Supported enterprise office relocation projects.
- De-installed, transported, re-installed, and validated workstation and network equipment.
- Tested connectivity and restored IT services at new locations.
Education
Heald College
Associate’s Degree — Computer Technology
San Jose, CA
Graduated October 2000
Professional Development
Cloud & Hybrid Infrastructure
- Instructor-led Microsoft Azure administration training covering hybrid identity, resource governance, and production workload management.
Virtualization & Secure Access Architecture
- Ongoing applied experience designing virtualization clusters and secure access boundaries.
- Citrix administration training supporting multi-tier terminal services and secure remote access environments.
Automation & Infrastructure as Code
- Continuous applied development of automation workflows, scripting, and infrastructure-as-code practices.
Enterprise Security & Identity
- Formal vendor training supporting enterprise MFA and privileged access management implementations.
- Security platform administration training emphasizing endpoint protection lifecycle and operational hardening.
Enterprise Systems Engineering
- Advanced application-building training supporting Tier III escalation, structured troubleshooting, and systems analysis.
License
FCC Amateur Radio — General Class License
Call Sign: KJ6VTR
Contact
Let’s talk infrastructure.