Darrin Coffey


Romeoville, IL 60446 USA





·         Over 20 Years’ Experience in the Information Technology field.

·         Over 15 years’ Experience in design, engineering, configuring, installing, supporting, troubleshooting and administration of complex WAN/LAN environments.

·         Well experienced in Management level support, interacting with vendors and customers to resolve LAN/WAN technical problems and other issues.

·         Experienced in planning and implementation of Disaster Recovery for critical applications and systems, also working with Sarbanes-Oxley compliance and auditing.

·         Proven leadership experience with project management methodologies, implementing projects from creation to execution to finalization and follow up.




·         Engineering center LAN/WAN Design and Install. (Multiple times and sites)

o   Eight Floors, 150 plus PC’s on each floor, access VLANs on Port.

o   Server room setup connectivity for file, print and Mail servers.

o   Full power and environment assessment.

o   Full Cisco wireless controller setup and install with multiple Access points.

o   Cisco 6509 with 20gig uplinks (Port-Channeled) to Cisco 3750 stacks (8).

o   Cisco VoIP on each desktop with Auto QoS and voice VLANs on each port.

o   Cisco enterprise routers with Security features for IPSEC GRE Tunnels and AES-128 encryption.

o   WAN T3 Circuit order, setup and install, LAN/WAN routing using EIGRP for routing.

·         Company purchase LAN/WAN merge using Internet VPN and MPLS (Design and Install)

·         10 site merge into existing Internet meshed VPN network

·         Setup and cut-over new sites to New MPLS network (WAN) bring new MPLS network into production with Internet VPN network.

·         ASA firewall installs and administration with multiple VPN tunnels and VPN user access.

·         Using EIGRP to BGP for transport routing.

·         Dual “Entry-Point” setup into MPLS network for DR and internet access.

·         Site assessment and business plan to upgrade/install.

·         Ordering and install of Internet (T1, T3 or Ethernet) and/or MPLS circuit.

·         Order, configure and install Cisco routers and firewalls, bring online with corporate network.

·         Cisco switches setup and install for LAN, subnet and VLAN planning and install.

·         All site application testing and user experience testing.






• Full network monitoring and trouble solutions

• All LAN/WAN installs and projects

• All LAN/WAN maintenance contracts

• All LAN/WAN configuration backups and retention.

• LAN/WAN design and standards

• Wireless design and installs (Corporate and internet systems)

• New Team member career path, training and yearly reviews

• Project status reporting

• Yearly Team budget review




·         10/2013 – Present           Littelfuse, Inc.                                   Chicago, IL

Senior Network Engineer                            

Responsibilities include; new site and acquisition LAN/WAN setup and design. Firewall and IPS security setup and support. Operational support and network monitoring setup and design.


·         4/2013 – 9/2013                TEK Systems                                       Schaumburg, IL

Senior Network Engineer                            

Project with Littelfuse Inc. on a 6 month to hire. Responsible for LAN/WAN implementations/Projects and support.


·         12/2011 – 3/2013              Integrated Data Storage                               Chicago, IL

Post Sales Engineer        

Cisco subject expert. Sales assist, Design and Implement Network Solutions, fixes and best practices.


·         7/2003 – 11/2011              Chicago Bridge & Iron                     Bolingbrook, IL

Network Manager          

Final design, installation and support on all LAN/WAN technologies including routers, switches, and VoIP. Designing and implementing all network connectivity, from design to project execution. Lead Project Manager on all new facility Network implementation, multiple network integrations and designs, 24hour support with a crew of six plus, supports international and US locations, also Responsible for Backup and Storage networks and Designs.


·         11/2002 - 6/2003               eMac Digital LLC                                Oak Brook, IL

Senior Network Engineer            

Top level support for entire Company, supporting routers, switches, servers and Active Directory with Exchange. Full network design with VoIP and Cisco QoS.


·         2/1997 - 10/2002               AT&T Broadband                              Oak Brook, IL

Senior Network Engineer (Technologist III)         

Full network support, Desktops, servers, routers and switches. Started as a contractor with Tek Systems and was asked to come on full time, taking over all server and LAN design and support.





Network infrastructure products/topology/media: Wireless Networking Cisco and 3COM, All series of Cisco routers and switches (Including Nexus), Net Flow, Full Cisco VoIP and QoS design and monitoring, Cisco firewall, ASA 5500's and VPN 3000 Concentrator, also 3COM/Cabletron Hubs and Switches, Solar winds engineering and Orion monitoring/support platforms, Basic knowledge of Check Point firewall, Nagios and WhatsUp Gold Monitoring.


Protocols & Services: TCP/IP, VLANS, VTP Domains, VPN Tunneling (GRE, IPsec), EIGRP, OSPF and BGP, leased lines and MPLS, Frame Relay, T1 and fiber based WANs, DHCP, NetBIOS, WINS, DNS, SNMP, and SMTP, IEEE802.11 standards, Wake on LAN configurations.


Server Implementations/ Applications: Microsoft Server, Microsoft IIS, Directory Servers, Windows Active Directory, NetWare File/Print/Application Servers, Windows Terminal Servers, Full Citrix solutions, Windows NT Application servers, Fast Lane Migratory for AD and Exchange, Microsoft Exchange Server, Aelita Domain Migration Wizard. Net App Network Design.


Other Applications/Tools: Net Backup, Backup Exec, Remedy, Dameware, Sniffer Pro, HP Open View, Microsoft Outlook, Microsoft Office suites, SMS, Microsoft Project, Microsoft Project Central/Team Services, NetIQ, CA-Unicenter AM/SD/Unicenter, Microsoft SQL Server, Oracle.


Operating Systems: Microsoft Windows 7, 8 and 10, Vista, XP, 2000 and all previous versions, OS/2, Novell NetWare v4.11 and Netware 3.12, Basic knowledge of Red Hat Linux, Solaris 8, Unix operating systems. Basic knowledge of BASIC, C/C++, Perl, Pascal, HTML, Crystal Reports, Java, KIX, VB 6.0




·         8/1984 Lincoln Land Community College               US-Springfield, IL

o   Associates of Applied Science Degree Courses

·         3/1995  NRI Schools                                                        US-Illinois-Naperville

o   C/C++ programming certification

·         7/1996  Arotech Education (Tek Systems)             US-Illinois-Oak Brook

o   A+ Certification, MCP Certification NT 4.0 Server

·         4/2012  Global Knowledge                                           US-Illinois-Schaumburg

o   CCNP Security


o  ASA Firewall


o  Securing Routers

o  IPS

·         4/2012                                                                   US-Home Study

o   CCNA Certification