
RICARDO A. CALHOUN
- Systems Engineer
- San Jose, CA
- Member Since Mar 15, 2023
Ricardo a. Calhoun
Technical Profile:
An established System Engineering SME and Team Lead with a demonstrated background leading world- class organizations in enterprise-wide application migrations, infrastructure implementations and change management processes based on business requirements. My professional technical experience spans 19 years with Wintel and Linux environments in various industries including Automotive and Materials Manufacturing, Food and Beverage Production, Aerospace Research, Entertainment Production, Law and Legal Services, and Financial Products and Services.
Through this experience I’ve developed excellent verbal and written communication skills that have been very instrumental in building productive and functional relationships between executive-level business management and technical personnel. Also, my successful collaboration and implementation strategies between application development and infrastructure teams in defining technical expectations have contributed to the sustainability of organizations such as Wells Fargo, Raytheon, NASA, IBM, The Walt Disney Companies, Dole Food Company, The Capital Group Companies, Buchalter Nemer, ACT Litigation Services, Washington Mutual/Chase, H&R Block, Countrywide Home Loans/BofA, Lender Processing Services, Computer Science Corporation, Dell, Fidelity National Financial, Cargill, Apex Systems, CDI, Artech Information Systems, HCL, and more.
Key Achievements:
· Provided extraordinary technical project leadership services for IBM, HCL, and the Walt Disney Companies for multiple SAN migration and high availability infrastructure projects.
· IBM – Successfully deployed multiple virtual machine images for Oracle 11gR2 and HP ServiceGuard clustering
· Disney – Developed strategic conversion plan and technical processes for EMC SAN migration to IBM XIV Vmax for Linux/Unix and Windows platforms. The SAN conversion was a multi-million dollar technology investment. – Awarded “ABOVE AND BEYOND” recognition for outstanding performance and lasting contribution by Enterprise Infrastructure Services of Disney Worldwide Services.
· Disney – Revised best practice documentation for change preparation and incident engagement to enable support teams to meet SLA targets on a consistent basis.
· Raytheon/NASA JPL – Architected and implemented infrastructure, application and database systems for the SDSIO division of JPL. Project scope: upgrade/replacement of networking components, server hardware/software, vendor negotiations for procurement, and datacenter design and construction. This also involved Sonicwall firewall implementation design and engineering including penetration testing using Nessus and Nmap.
· Capital Group Companies – Technical Lead for SHARK Project: Evaluation and determination of most adaptable investment technologies based on dramatic changes in market conditions.
· NASA Dryden Research Center - Developed hardware decommission procedure to eliminate classified data leakage scenarios and speed up redeployment of salvaged components.
· Dole Food Company - Cisco, Sonic and Checkpoint firewall/VPN design and engineering using ACID/SNORT for NIPS redundancy for Dole Global Headquarters, Dole Fresh Flowers, and Castle and Cooke during IT resource consolidation for Lights-Out Datacenter project.
Professional Experience:
Wells Fargo – Wholesale Division – Capital Finance Group (through ISG) – Santa Monica, California 09/16 - Present
Systems Engineer for Enterprise Infrastructure Team
(Contractor)
Support Methods: Change, Incident, Project, and Procedure Support for Over 750 Windows Physical and Virtual systems.
Support Methods: Change and Procedure Support Remotely for Over 3000 Windows/Linux Servers.
Walt Disney Companies (through HCL) - Burbank, California (Remote) 04/08 – 9/16
Senior Windows Clustering SME / Technical Lead
Support Methods: Change and Procedure Support Remotely for Over 3000 Windows/Linux Servers.
Support Methods: Outage and Proactive Support Remotely for Over 3000 Windows/Linux Servers and Project Management for SAN allocations and migrations.
· Veritas Cluster Server Build and Troubleshooting Expert for Unix/Linux and Windows OS Platforms
· Storage Migration Expert for IBM, EMC, and Dell Compellent Storage Hosts.
· Set up of Cisco routers and switches, IP over Sonet (SDH). General ISP management using VitalQIP (IP Management tool), DNS management, RIPE, maintenance of SLA’s.
· Implementation of VitalQIP to manage subnets, DNS, and VLAN mappings for various design items.
· Project management for $10 million EMC to IBM XIV Vmax SAN fabric conversion for HP-AIX, SUN Solaris, Linux, and Windows environments. Developed plan for preparation and execution of conversions with an emphasis on zero impact.
· Patch management for Linux and Windows Server environment using BigFix.
· Windows/Linux design and Engineering of iNews 3.0 Servers, FTS, Comparators, and Receivers for ABC TV operations.
· Aspera Clustered Server design for Studio Operations.
· Project management and design of Veritas Cluster Server for Redhat 5.x platform. This included custom application design for clustering and simulated failure testing to ensure fault tolerance.
· Project management for Linux and Windows environments. Various migrations, compliance initiatives, vulnerability and high availability projects.
· Project Manager for Citrix Presentation Server 4.5 to Xenapp Server (5.0) migration.
ACT Litigation Services - Valencia, California 09/07 – 12/08
Web Hosting Engineer
Support Methods: Remote and Onsite Support on 24/7 Schedule for 150 Management and Account Executives, 300 In-house Review Attorneys, and 250 Customers.
· Web hosting support for eDiscovery application delivery. Responsibilities included build, optimization, and maintenance of Oracle 10g databases. Engineering and maintenance of database, web, and image servers.
· Citrix Presentation Server 4.5 Engineering for Global Review Team application publications and server load balancing.
NASA (through Raytheon) - Pasadena, California 05/07 – 03/08
JPL’s Scientific Data Systems Implementation and Operations Division
Senior Systems Engineer
Support Methods: Onsite Support for 250 Web Developers and Application Development PMO’s
· System Engineering for Raytheon-Pasadena Web Development and NASA-JPL SDSIO. Engineering and maintenance Raytheon and NASA networks which were co-located but logically air-gapped due to JPL security requirements. Windows, Linux, VMware and Solaris platforms were supported.
· Set up of a Remote Access Server into the Pasadena Point of Presence for remote monitoring of systems using CISCO 3640 ISDN and POTS (MICA card). Cisco 2600. Some 6500 Catalyst and MFSC experience. VPN set up (PPTP).
· Sonic firewall design and Engineering including penetration testing using Nessus and Nmap.
· Responsible for design and techniques to link some 35 station systems with 300 pieces of computer equipment using TCP/IP LANs and WANs using TCP/IP. Setting up Network Time protocol (NTP)
· Project management for various deployments, migrations, and implementations.
· Architected and implemented new infrastructure, database, and web servers. Datacenter design and construction.
· Managed Group Policies for servers and workstations. Expertise with AD snap-ins such as Group Policy Editor, RSoP, GPMonitor, etc.
· Project Management VMWare ESX3.0 and 4.0 Migration for production and test environments.
Dole Global Headquarters - Westlake Village, California 04/05 – 05/07
Windows Systems Engineer
Support Methods: Onsite support for 350 Corporate Executives and End-user, Remote Systems Engineering for 4000 End-users Globally
· Troubleshooting and maintenance of Cisco PIX Firewall, Cisco content switch, Cisco 7100,7206,3600,2610,2500 routers, Exposure to Cisco 8500 and Madge ATM switches. Cisco 800 ISDN routers. 2980 series switch. Lucent M770, P882 and P330. Involved in security policy discussions with Price Waterhouse. Consultancy on network improvements in particular security.
· Redesign of head office network (Router consolidation). 802.1Q VLAN Trunking protocol. ISDN PRI/BRI dialer setups. E3 and E35 serial WAN interfaces. Cisco works. PC-Duo. Familiar with Cisco 8540 ATM switches. HP Openview en Cisco Works. Cisco PIX firewall. Cisco, Sonic and Checkpoint firewall/VPN design and Engineering using ACID/SNORT for NIPS redundancy for Dole Global Headquarters, Dole Fresh Flowers, and Castle and Cooke during IT resource consolidation for Lights-Out Datacenter project.
· Assigned to plan and implement Group Policies for PCI and SOX Global Computer Controls for compliance
· Managed multiple projects for sister companies Castle & Cooke and Four Seasons Westlake
· Project Manager for Windows NT4 to AD and Windows XP using MS Project, Quest Tools, and Altiris workstation image deployment
· Engineer for corporate domains. Escalation point for Helpdesk and Desk-side support incidents.
· Systems Engineer for Company-Wide Blackberry Messaging Servers for Domino Email Systems
· Project management for various corporate information technology initiatives.
· Systems Engineer for Citrix Presentation Server 4.0 and Web Reflections 3.0
Countrywide Home Loans - Lancaster and Simi Valley California 01/04 – 02/05
Senior Support Specialist
Support Methods: Onsite Support for 2500 Call Center End-users
· Supported and maintained all servers and desktops for the Lancaster Customer Call Center
· Supported and maintained all servers and desktops for the Simi Valley campuses.
· System Engineer for Windows 2000 AD Domain Controllers and Global Catalog Servers
· Project Management of technology delivery projects for Treasury Bank operations in Simi Valley
Washington Mutual - Northridge, California 01/04 – 02/04
Information Technology Delivery Consultant
Support Methods: Server Assessment of 5000 Physical Server in the Northridge Campus
· Inventory and assessment of business purposes for all technology assets in the Northridge datacenters. Preparation and determination of applicable SLA’s for Siemens technology delivery partnership with Washington Mutual.
H&R Block - Palmdale, California 12/03 – 01/04
Server Migration Consultant
Support Methods: e-File Tax Server Migration Support for 25 local offices
Buchalter, Nemer, Fields & Younger LLC (through Bowne Business Solutions) - LA, California 06/03 – 12/04
Migration and Implementation Consultant
Support Methods: Project Management Windows 2K AD Migration, Exchange Server migration for 700 End-user across three company offices.
The Capital Group Companies - Los Angeles, California 11/02 – 06/03
Investment Technology Support Specialist
Support Methods: Onsite Investment Technology and Server Support for 400 End-users
NASA-Dryden Flight Research Center - Edwards AFB, California 09/00 – 11/02
Technology Catalog and Deployment Manager
Support Methods: Technology Procurement and Project Management for over 900 End-users involved with Aerospace and Aviation technology development.
· Managed a team of six members for technology deployment/decommissions.
· Provided technology support for multiple aerospace research departments.
· Project Manager for Desktop Windows NT4 to Windows 2000 AD migration using Quest, MS Project, and Eudora.
General Motors Global Headquarters (through IBM) - Detroit, Michigan 06/00 to 07/02
Project Consultant
Support Methods: Systems Support for 300 End-users support ONSTAR technology
· Managed various network and desktop hardware/software upgrades for GM Global HQ systems.
Textron Automotive - Troy, Michigan 03/98 – 07/00
Satellite Support Analyst
Support Methods: Systems Engineer and Desktop Support for 4 company sites totaling 500 End-users
· Server engineering and desktop support for 4 remote company sites (satellites).
Cadillac Plastic - Troy, Michigan 07/96 – 03/98
Systems Analyst
Support Methods: Systems Analyst for Custom Oracle driven applications and general technical support for 400 corporation and sales operations end-users
· Helpdesk Support for 74 sales branches in the U.S.
· Desk-side for Corporate Headquarters in Troy, Michigan.
Education, Training and Affiliations:
Engineering and Computer Science Major 2-years completed 1996-1998
Advanced Windows Server 2012 Administration 2016
Advanced Powershell for Windows Management 2016
Ethical Hacking
Powershell for Unix and Windows Environments
Android Application Development