Rafael
Architect - Network Engineer - Instructor
  • Stephens City,
  • Virginia,
  • United States
Member Since: 2012/01/10
Industry: Engineering
Tech Certifications:
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An 18 Year Army Veteran Rafael Caballero is currently an Architect - Network Engineer at Maximus Federal and carries multiple certifications

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Points this month666
Total points226,688
Questions: 7
Solutions: 181
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Professional Background
Architect - Network Engineer
MAXIMUS IT
November 2018 – Present
Manassas, VA
Responsible for overseeing a TIER 3 FedRAMP data center, while providing the network and architectural design and support of the MAXIMUS IT Federal private cloud infrastructure and its customer base.
      Responsibilities include providing strategic planning, technical expertise, and recommendations to various agencies for migration and integration to the MAXIMUS IT Federal Cloud environment. Assists in the development of architectural strategy, including technology standardization and modernization of the enterprise, data center, and its disaster recovery network infrastructures
      Provides technical support, guidance and leadership for ensuring data center remains compliant with FedRAMP security requirements.  Includes technical hardware and software upgrades of existing MAXIMUS IT Federal Cloud infrastructure to resolved security findings and vulnerability assessments.
      Configures, tests, installs and administers network equipment including, Cisco Routers, ACEs, ASAs,  Switches, Nexus product line including UCS, as well as F5 Load Balancers, and Sonic Wall firewalls.
      As the primary network engineer supports and maintains the Debt Management & Collection System (DMCS) infrastructure as well as the Human Capital Management (HCM) network. Assist in all network maintenance activities in addition to the disaster recovery implementation and planning efforts.
      Responsible for updating and maintaining all network documentation and all portions of the data center equipment and rack diagrams and while assisting in the operation and maintenance (O&M) of hardware resources in the data center.
      Responsible for updating and maintaining Visio network documentation and all portions of the DMCS contract deliverables as it relates to Visio network designs.
      While working with internal MAXIMUS IT Federal Cloud Windows Team, assisted in the installation configuration and deployment of Orion's SolarWinds NCM to monitor all Network devices. Currently, working on deploying the IPAM tool set from the Orion Network Management suite.
Adjunct Faculty Instructor
Lord Fairfax Community College
October 2018 – Present
Middletown, VA
Part-Time Adjunct Faculty instructor teaching CompTIA Network+ and Information Technology Infrastructure Library (ITIL) for the Lord Fairfax Community College Office of Workforce Solutions.
      Designed and currently building out the Workforce Solutions computer student lab for use in the CompTIA A+, Network+ and Security+, workforce training program.
      Other duties include communication with the program manager and other adjunct faculty staff members to determine dates, times, and curriculum development.
Sr. Principal Network Engineer
General Dynamics IT
October 2015 – November 2018
Manassas, VA
Responsible for overseeing a TIER 3 FedRAMP data center, while providing the network and architectural design and support of the GDIT private cloud infrastructure and its customer base.
      Responsibilities include providing strategic planning, technical expertise, and recommendations to various agencies for migration and integration to the GDIT Cloud environment. Assists in the development of architectural strategy, including technology standardization and modernization of the enterprise, data center, and its disaster recovery network infrastructures
      Provides technical support, guidance and leadership for ensuring data center remains compliant with FedRAMP security requirements.  Includes technical hardware and software upgrades of existing GDIT Cloud infrastructure to resolved security findings and vulnerability assessments.
      Configures, tests, installs and administers network equipment including, Cisco Routers, ACEs, ASAs,  Switches, Nexus product line including UCS, as well as F5 Load Balancers, and Sonic Wall firewalls.
      As the primary network engineer supports and maintains the Debt Management & Collection System (DMCS) infrastructure as well as the Human Capital Management (HCM) network. Assist in all network maintenance activities in addition to the disaster recovery implementation and planning efforts.
      Responsible for updating and maintaining all network documentation and all portions of the data center equipment and rack diagrams and while assisting in the operation and maintenance (O&M) of hardware resources in the data center.
      While working with internal GDIT Cloud team, assisted in the design, staging, deployment and installation of the network equipment and infrastructure in support of the US Census Bureau 2020 Questionnaire Assistance (CQA) program.  
Sr. Principal Network Engineer
General Dynamics IT
December 2011 – September 2015
Warrenton, VA
Responsible for providing the network engineering and architectural support of a multi-million dollar Cisco Nexus Enterprise-Class Network supporting a Federal Government's Health Care Program (HCQIS).  
      Responsibilities include proactively supporting the HCQIS enterprise class network infrastructure to maintain network reliability through problem resolution and escalation within the Data Center and all remote end sites throughout the US and its territories.
      Configures, tests, installs and administers network equipment including, Cisco APs, Routers, CSS's, ACEs, ASAs, and Switches including Nexus product line, as well as Juniper NS, SSG and SRX firewalls.
      Utilizing various network tools, (such as, Orion, Fluke, Anue, Wireshark), analyzes network traffic to identify performance and resource utilization issues while researching and evaluating new technologies to enhance network performance for high availability & network resiliency. Currently, administers the Anue.
      Co-Engineered the development, network integration and deployment of the Cisco Unified Computing System (UCS) environment that is currently supporting both the Virtual Desktop Integration (VDI) and Hadoop Big Data Framework solution.
      Co-Engineered the development, and deployment of Tripwire Enterprise Security solution. Currently administers Tripwire as part of the Network Team's configuration policy management and baseline.
      Serves as a member of the Data Center Committee and primary engineer for forecasting network capacity for new projects; legacy infrastructure migration; as well as integration of new technologies and upgrades to existing environments. Provides technical support and leadership for new inbound projects and enhancements including designing, implementing, and deployment support. Collaborates with peers in analyzing requirements to confirm that solutions meet or exceed customers’ expectations.
      Responsible for updating and maintaining Visio network documentation and all portions of the HCQIS contract deliverables as it relates to Visio network designs.
Sr. Network Engineer (Technical Team Lead)
HP Enterprise Services (F/K/A Electronic Data Systems, EDS)
May 2004 – October 2011
Herndon, VA
Provided and oversaw the 24x7 network infrastructure, engineering support and day-to-day operational and
network security support to the U.S. Army's Human Resource Systems (AHRS) environment.
      Responsibilities included proactively monitoring and troubleshooting the AHRS LAN and WAN environments; architecting, installing, and administering various vendor switches, Cisco routers, Cisco and F5 Load balancers, Juniper and Cisco firewalls; a Windows 2003, 2008 Active Directory Forest, with more than 14,000 Web-based users; and SAN storage and Backup and Disaster Recovery (BDR) solutions over TCP/IP networks.
      Architected, and led the implementation, migration and move of the AHRS COOP site to a new location in excess of 700 miles away.
      Co-Architected, implemented, migrated and documented several portions of the AHRS LAN and WAN, including the Active Directory Forest including Exchange with more than 100 servers and 25 client workstations. This included security boundaries and NIDs, HIDs, SSL certificates & CAC authentication.  
      Interacted with the Army point of contact to build requirements for Army personnel systems.
      Performed analysis and validation of network performance and evaluated enhancements.
      Assisted in the development, administration and implementation of security procedures for computer networks used to obtain Army accreditation to process classified information.
      Implemented vendor-supplied authentication, auditing, and other security-relevant features; maintained a compliant CM program; reported, investigated and conducted remediation for computer security incidents.
Network Migrations Technical Team Lead
Electronic Data Systems, EDS
October 2002 – March 2003
Herndon, VA
Provided direct technical management, and leadership to the newly developed Tennessee Network Migrations
team, consisting of eight direct and 10 indirect reports, including field engineers, migration program managers
and provisioning engineers.
      Provided technical guidance and leadership in the initial statewide migration of 1500 end sites onto the present IP Convergence MPLS WAN Backbone.
      Proactively monitored and support the Statewide TNII enterprise network infrastructure to maintain network reliability through problem resolution and escalation.
      Worked with TELCO's, LEC's and other carriers to order and test provisioned circuits while resolving command circuit availability issues for customer end sites.
      Created and documented various initial support processes, which included testing and acceptance procedures.
      Participated in managing projects introduced by engineering team assuring full implementation and documentation standards are adhered to.
      Developed and coded technical scripts to streamline and automate support team functions.
Network Engineer
Spherion sub-contracted to EDS Temp to Perm
April 2001 – October 2002
Herndon, VA
Provided 24x7 Cisco WAN resolution support and Change Management (CM) for an MPLS statewide IP/ATM WAN core backbone consisting of 6 NAPs, 13 POPs, and more than 150 end sites.
      Proactively monitored and supported the Statewide enterprise network infrastructure to maintain network reliability through problem resolution and escalation for the state of Tennessee.
      Analyzed, and used network engineer skills to configuring, maintain and repair network infrastructure.
      Troubleshot and resolved complex 2nd level network related problems, coordinate resources where necessary and serve as escalation point to 1st level operational teams.
      Resolved customer access issues in the areas of implementation, configuration, maintenance, trouble isolation, IOS upgrades, and circuit fault resolution ranging from ISDNs to OC3s.
IT Director, Network Operations
Oblynx
June 2000 – March 2001
Fairfax, VA
Direct Information Technology within Network Operations while providing planned and implemented additions, deletions and major modifications to the supporting infrastructure company-wide in coordination with Engineering, R&D, and corporate leadership. Developed and implemented a centralized, integrated, global 24x7 NOC for the company’s global clients.
      Supervised 16 direct reports while monitoring 32 countries supporting over 200,000 global users.
      Established Quality Assurance, Documentation, and Help Desk departments that enhanced productivity
      Created Change Configuration Board (CCB) to capture and document procedures to define software releases cycles and network upgrades to increase global customer support.
      Recommended and implemented deployment of canned network devices for overseas customers that dramatically, reduced network installation times thus shortening the billing cycle for finance department.
Sr. Communications Engineer
CNSI
September 1999 – June 2000
Phoenix, AZ
Provided 24 x 7 third level Cisco router and switch support for all areas of LAN and WAN in supported of
The Bureau of Census during the National Census 2000 Project.  Maintained network topology standards and
network security standards based on Customer's predefined policies and procedures.
      Proactively monitored and supported the network infrastructure to maintain network reliability through problem resolution and escalation for two Data Centers.
      Responsible for engineering solutions based on current standard infrastructure and the maintenance of structured cabling plant using standard network analyzers.
      Assisted with the maintenance and setting of network topology standards and network security standards from higher echelon.
      Led the development baseline efforts of configurations for Cisco switches and routers.
      Dramatically, reduced network installation times thus shortening the billing cycle for finance department.
Information Technology Chief
US Army
February 1982 – September 1999
Worldwide ending in Arizona
Principle Non Commissioned Officer in charge of one of the U.S. Army’s global working Data Center
supporting over 300,000 plus customers, in a 24 x 7 environment.
      Indirectly supervised 165 personnel with 45 direct reports while overseeing reconfigurations, software upgrades, and assistance to customers on all network issues, traffic monitoring, re-routing, and studies.
      Supervised, planned, coordinated and directed the employment, operation, management, and unit level maintenance of multi-functional/multi-user information processing systems in mobile and fixed facilities.
      Conducted briefings on the status, relationship, and interface of information processing systems within assigned area of interest to command concerning all aspects of information processing system operations.
      Developed and enforced policy and procedures for facility operations and management. Enforced information security (INFOSEC), operations security (OPSEC), and physical security per regulations and policies.
      Supervised development of the information systems plans (ISP), information management plan (IMP), and information management master plan (IMMP) while reviewing, consolidates, and forwards final written input for the continuity of operations plan (COOP) for various units.
      As a program developer, created training material for use in training soldiers in various military schools.
As an Instructor trained soldiers in various technical military schools including primary, basic and advanced leadership training.
Sr. Network Engineer / NOC Operations Manager
Electronic Data Systems, EDS
Herndon, VA
Managed the day to day operations of a 24x7 Network Operations Center (NOC) supporting a Tennessee statewide Cisco based MPLS IP/ATM wide-area network (WAN) consisting of five Network Access Points (NAPs), 13 Points of Presence (POPs), and more than 1,300 nodes.
      Acted as the single point-of-contact for joint business partners both internal and external on all issues concerning the NOC while supervising 30 engineers.
      Managed the NOC portion control of the conversion of over 1300+ sites to the TNII network backbone
      Created and maintained the day-to-day processes and procedures used in the group.  Deployed and documented changes in accordance with problem and change management process.
      Lead the development and maintained an Intranet Certified ISO 9001:2000 website for use by NOC engineers in obtaining real time access to information.
      Served as the Configuration Change Officer (CCO), to oversee the development, and enhancement of the network and a member of the Remedy Configuration Control Board
      Reviewed trouble tickets weekly to ensure accuracy, and edit summary write ups of the tickets for presentation to the State of Tennessee (customer) for SLA accuracy.
      Ensured that IP network issues were resolved within the timeframe of severity level agreements.
Ensured that NOC communication to customers, regarding resolution and root cause resulting from the outage or service interruption.
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Education
Georgia Military College
AAS
Science
1995 – 1998
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Full Biography

Rafael Caballero has 30 years of industry experience as a highly creative goal-oriented professional with solid management and technical skills and experience. He demonstrates strong analytical ability and problem-solving skills in automation, staff management, and production. He is highly organized, with the ability to multitask and meet deadlines and a compelling work ethic that commits to excellence in all projects. He is a team player, holding industry certifications with exemplary communication, presentation, and customer service skills while working with analysts, network managers, budgeting offices, training departments, and senior managers to accomplish objectives.

For 30 plus years, previously held a Top Secret, SSBI DoD Clearance that was last used in 2011. Currently holds several Active Public Trust Clearances for various Commonwealths and US Government Departments.

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Languages
Spanish
Native or Bilingual Proficiency

Level Progress

Current: Level 10
Rafael needs 15,312 points to level up.
LVL 11
  • Overall
    10
  • Cisco
    4
  • Networking
    4
  • Routers
    4
  • Switches / Hubs
    4
  • Network Architecture
    3
  • Network Management
    3
  • Networking Hardware-Other
    3
  • Network Security
    3
  • Network Analysis
    3
  • Hardware Firewalls
    2
  • Network Operations
    2
  • Hardware
    2
  • VPN
    2
  • Windows Server 2008
    2
  • Wireless Networking
    2
  • Windows Networking
    2
  • Internet Protocol Security
    2
  • Windows 7
    2
  • Server Hardware
    1
  • Broadband
    1
  • Vulnerabilities
    1
  • Security
    1
  • Dell
    1
  • Wireless Hardware
    1
  • Windows 8
    1
  • Software Firewalls
    1
  • Laptops Notebooks
    1
  • Software
    1
  • Miscellaneous
    1
  • Active Directory
    1
  • Storage
    1
  • Email Software
    1
  • Encryption
    1
  • Storage Hardware
    1
  • VMware
    1
  • Desktops
    1
  • Windows OS
    1
  • DNS
    1
  • Server Software
    1
  • Microsoft Server OS
    1
  • Web Browsers
    1
  • Word Processors
    1
  • Linux
    1
  • Linux Distributions
    1
  • TCP/IP
    1
  • Internet Protocols
    1
  • File Sharing Software
    1
  • Internet / Email Software
    1
  • Remote Access
    1
  • ATEN Technology
    1
  • Anti-Spyware
    1
  • AntiSpam
    1
  • Disaster Recovery
    1
  • Embedded Hardware
    1
  • Exchange
    1
  • Microsoft Hardware
    1
  • Outlook
    1
  • Peripherals
    1
  • Project Management
    1
  • SSH / Telnet Software
    1
  • Storage Software
    1
  • Tax / Financial Software
    1
  • Voice Over IP
    1
  • Western Digital
    1