Summary
Overview
Work History
Education
Skills
Accomplishments
Certification
Languages
Timeline
Generic

Alfredo Guardado

Woodbridge

Summary

Accomplished System Administrator confident in maintaining reliable and secure Type systems. Highly knowledgeable in related equipment, software and best practices. Results-oriented and driven to improve system operation and meet future demand with callable solutions. Highly skilled System Administrator with extensive experience in network engineering, cloud infrastructure, virtualization, and system optimization. Adept at managing enterprise networks, troubleshooting complex issues, and ensuring high availability of IT systems. Proven ability to integrate AWS, Active Directory, and security protocols to enhance system performance and user experience.

Overview

31
31
years of professional experience
1
1
Certification

Work History

Senior Lead Network Engineer

Metrostar
07.2024 - Current
  • Responsible for designing, implementing, managing, and troubleshooting complex network systems
  • Will Oversee and manage the day-to-day operations of the company's network infrastructure, ensuring optimal performance and availability
  • Also Troubleshooting and Support: Provide advanced troubleshooting and problem resolution for network issues, ensuring minimal downtime and impact on business operations
  • Performance Monitoring: Monitor network performance and health using various tools, identifying and addressing potential issues proactively, and documentation: Maintain detailed and up-to-date network documentation, including diagrams, configurations, and procedures
  • Will Work closely with other IT teams, vendors, and stakeholders to ensure seamless integration and operation of network systems
  • Also Provide guidance and mentor-ship to junior network engineers, helping to develop their skills and knowledge
  • With my 15 years of experience in, implementing, and maintaining LAN, WAN Components
  • Adept at optimizing system performance, ensuring data security, and providing top-tier support to end-user

Network Engineer

VSO
01.2022 - 07.2024
  • Net MRI, Red seal, and Forward Network data collectors, collecting data from all NRO assets layer 2 and, layer 3 routers, switches, firewalls
  • Working with IT Security team to ensure the cloud environments aligns with IT Security compliance
  • Develops and maintains cloud infrastructure user access roles
  • Working closely with Tier 1 Cloud Support Techs and the Cloud Services team to remediate issues and fulfill support requirements
  • Experience with Ansible, Power shell automation tool-sets
  • Knowledge and experience working with Amazon Web Services, Microsoft Azure or Google Compute Engine or equivalent cloud platform experience with application/data migration to AWS

Network Engineer

PAE
01.2020 - 01.2022
  • Managed and administered local area networks (LANs) to support daily operations and facilitate communication across departments
  • Configured and maintained network equipment, including switches, routers, and wireless access points, to ensure optimal performance and reliability
  • Monitored network traffic and performance metrics, identifying and addressing potential bottlenecks and security threats
  • Conducted regular backups and implemented disaster recovery procedures to safeguard critical data and ensure business continuity
  • Collaborated with vendors and service providers to procure network hardware, software, and services, negotiating contracts and ensuring cost-effective solutions
  • Provided technical support and training to end-users, troubleshooting network issues and assisting with software and hardware installations
  • Designed, implemented, and maintained LAN/WAN infrastructures to ensure seamless connectivity and optimal performance
  • Configured and managed routers, switches, firewalls, and other network devices to support organizational requirements
  • Conducted network troubleshooting and diagnostics to identify and resolve connectivity issues, ensuring minimal downtime
  • Collaborated with cross-functional teams to plan and execute network expansion projects, including hardware upgrades and capacity planning resolving issues in a timely manner

Network Engineer

Allied Associates International
01.2018 - 01.2020
  • Assist technical support staff and end-users to manage basic and expedited support for all network related issues
  • Work independently while providing system admin support to multiple software development teams
  • Work with Team members to develop to brainstorm and implement Ideas to support other groups within the agency
  • Currently involved in developing and VMware implementation to deploy virtual desktop for Wise dell thin clients
  • Supporting Cisco UCS B-Series Blade and C-Series Rack Servers, the C3260 storage server, and the Cisco Hyper Flex
  • Design, implement and maintain VMware vSphere infrastructure
  • Monitor, troubleshoot and capacity planning of vSphere environment
  • Proactively identify and perform hardware and software upgrades
  • Evaluate new products and recommends updates and upgrades
  • Provide technical guidance to other VMware administrators
  • Manage and maintain the physical hardware and virtual environment / infrastructure of the Energy & Utilities group using Virtual Center Server v6.0 with a mixture of ESXI 6.5 & ESX 6.7 hosts, consisting of six physical hosts with 250 – 300 virtual machines
  • Built the v6.5 VCenter Server and moved / migrated hosts over from the previous v6.0 Virtual Center

Sr. System Admin Tier III Support

Bruin Waves Solutions
01.2012 - 01.2018
  • Manage and maintain Windows Server and Linux environments, ensuring system up-time and security compliance
  • Administer Citrix Virtual Apps and Desktops, optimizing performance for enterprise users across multiple locations
  • Implement and troubleshoot network protocols (BGP, MPLS, OSPF) to improve connectivity and network performance
  • Configure and manage cloud services, including Azure Active Directory, Virtual Machines, and Security Policies
  • Oversee enterprise wireless network infrastructure, ensuring seamless connectivity and minimal downtime
  • Automate system tasks using PowerShell and Python to improve efficiency and reduce manual workloads
  • Conduct security audits and enforce best practices to protect systems from cyber threats
  • Maintain and optimize Windows Server infrastructure, including patch management, role-based access control, and performance tuning

Sr. System Admin

Lockheed Martin
01.2010 - 01.2012
  • Manage and maintain Windows Server and Linux environments, ensuring system uptime and security compliance
  • Administer Citrix Virtual Apps and Desktops, optimizing performance for enterprise users across multiple locations
  • Implement and troubleshoot network protocols (BGP, MPLS, OSPF) to improve connectivity and network performance
  • Configure and manage cloud services, including Azure Active Directory, Virtual Machines, and Security Policies
  • Oversee enterprise wireless network infrastructure, ensuring seamless connectivity and minimal downtime
  • Automate system tasks using PowerShell and Python to improve efficiency and reduce manual workloads
  • Conduct security audits and enforce best practices to protect systems from cyber threats
  • Troubleshooting and diagnostics to identify and resolve connectivity issues, ensuring minimal downtime
  • Collaborated with cross-functional teams to plan and execute network expansion projects, including hardware upgrades and capacity planning
  • Implemented security protocols and measures to safeguard network

System Admin

Navy International Program
01.2007 - 01.2010
  • Supported the Information Assurance implementation for Nippon Accreditation for 2008, and 2009 on all secure, and non-Secure
  • Ran Gold disk, and Retina to see what’s needed to be re-mediated according to stags
  • Reviewed exceptions that did not required any remediation for all Navy IPO servers to run properly
  • Made sure that any remediation and exceptions are well reviewed before making any changes
  • Remediation is done to each server and according to what applications or programs are being run on each server

System Admin/Engineer

SOS International
01.2005 - 01.2007
  • Installed, configured, updated, and maintained Microsoft Windows servers 2000/2003 for SOS International
  • Performed complex hardware deployments, software upgrades, and significant projects
  • Perform Tier II-III problem management, isolation, and resolution
  • Worked with vendors isolate and resolve complex problems
  • Replaced failed components as necessary
  • Worked with Microsoft or other vendors as necessary to resolve systems problems
  • Maintained and upgraded automated scripts for application products to facilitate operational tasks
  • Monitored system capacity (CPU, memory, ports, disk space, etc.) and took appropriate action to report and correct any issues which were included on a weekly report
  • Coordinated with Lead Systems Engineers, Security, Asset Management, Customer Service, and Helpdesk teams as necessary for problem resolution support and project management
  • Supported the planning and migrating from windows 2000 to windows 2003 active directory, and 2010 exchange server
  • Configured and Installed Cisco 3750 catalyst trucking on all switches and implemented VLAN with VMPS on layer 3 switches
  • Configured fire walls for all VPN remote access
  • Ensured that the backup exec completed the daily backup without failure

System Engineer

United States Senate
01.2002 - 01.2005
  • Installed, configured, and maintained windows 2000, 2003 exchange servers, and active directory
  • Ghost utility to speed up deployments and Repair Drivers from a total system crash including upgrades, and installations
  • Involved in the planning on upgrading from windows 2000 to windows 2003 active directory, and exchange server
  • The State Senate had over 200 different domain controllers with over 10,000 users
  • Supported all members of the State Senate with issues ranging from, exchange server for emails, new installation, upgrades, black barriers

Communications

U. S Marine Corps
01.1994 - 01.2002
  • Gained progressive experience providing network support, system planning, product evaluation, and selection
  • Provided comprehensive and cost-effective installation, trouble shooting, and maintenance of voice and data communication systems
  • Implemented TCP/IP, Windows NT 4.0, wins 2000 server
  • Responsible for troubleshooting all connectivity issues, corrected hardware malfunctions, and resolved software, and network problems throughout the Local area Network and Wide area Network
  • Configured and maintained firewalls
  • Implemented and configured Storage Area Network Devices
  • Maximized customer operational performance by resolving IT issues
  • Maintained upgrades and monitored all server and internal infrastructure equipment
  • Established network specifications
  • Maintained network performance on need basis

Education

CCNP Certified -

12.2027

AA Network Management -

MCSA Certified -

01.2030

CompTIA Network -

01.2030

AWS Network engineer -

11.2027

Security plus -

06.2027

CEH – Certified Ethical Hacker -

01.2026

Computer Forensic Certified -

01.2026

Skills

  • Windows Server
  • Linux
  • Ubuntu
  • CentOS
  • RHEL
  • Citrix Virtual Apps & Desktops
  • VMware
  • Hyper-V
  • BGP
  • MPLS
  • OSPF
  • VLANs
  • VPNs
  • Load Balancing
  • Azure
  • AWS
  • Hybrid Cloud Infrastructure
  • Firewalls
  • IDS/IPS
  • Multi-Factor Authentication
  • Group Policy Management
  • PowerShell
  • Bash
  • SolarWinds
  • Splunk
  • Wireshark
  • Routing protocols expertise
  • Network security management
  • Data center networking
  • Network monitoring tools
  • Firewall configuration and management
  • Virtualization technologies
  • Local area network experience
  • Wide area network experience
  • LAN switching technologies
  • Strong troubleshooting skills
  • Network device monitoring
  • Technical troubleshooting
  • Network configuration
  • Hardware installation
  • Remote work support
  • DNS implementation
  • VLAN aggregation
  • Virtual private networks
  • Access control
  • Subnetting expertise
  • MPLS routers
  • User support
  • OSPF routing

Accomplishments

  • Used Microsoft Excel to develop inventory tracking spreadsheets.
  • Supervised team of 15 staff members.
  • Resolved product issue through consumer testing.
  • Documented and resolved Different Network Issues which led to positive result's, as well documented the issues and the fix to have faster result on future issues.

Certification

CCNP, Security Plus, CEH, AWA Advanced Networking, CEHFI

Languages

Spanish
Full Professional
English
Full Professional

Timeline

Senior Lead Network Engineer

Metrostar
07.2024 - Current

Network Engineer

VSO
01.2022 - 07.2024

Network Engineer

PAE
01.2020 - 01.2022

Network Engineer

Allied Associates International
01.2018 - 01.2020

Sr. System Admin Tier III Support

Bruin Waves Solutions
01.2012 - 01.2018

Sr. System Admin

Lockheed Martin
01.2010 - 01.2012

System Admin

Navy International Program
01.2007 - 01.2010

System Admin/Engineer

SOS International
01.2005 - 01.2007

System Engineer

United States Senate
01.2002 - 01.2005

Communications

U. S Marine Corps
01.1994 - 01.2002

AA Network Management -

MCSA Certified -

CompTIA Network -

AWS Network engineer -

Security plus -

CEH – Certified Ethical Hacker -

Computer Forensic Certified -

CCNP Certified -

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Alfredo Guardado