BRIAN MULLIGAN
Ottawa,KS
Summary
A leader and innovator with 29 years of experience in a variety of technical genres. My goal is to lead by encouraging innovative and forward thinking ideas. Enabling me and my team to provide and create technological solutions that will serve and improve the process and function of my company, and hopefully the lives of others.
Overview
24
24
years of professional experience
1
1
Certification
Work History
Network Specialist
OITS State Of Kansas
2023.09 - Current
- Responsible for the daily operation, administration, and support of OITS Cisco LAN, WAN, and Wireless Network environments. In addition, providing VoIP environment administration and management support.
- Assist in design, implementation, maintenance, and monitoring of the KANWIN Data Center Network environments for OITS and Kansas Executive Branch Agencies.
- Manage and administer core networking support application governing core network functions and authentication processes (Cisco DNA, Splunk, Infoblox, and SolarWinds).
- Responsible for providing support for general request, incident, and break-fix support tickets for all state agencies dependent on core networking support platform and applications.
Senior Windows & Mac Eng. Contractor Iron Systems
Hallmark Distribution Center
2023.05 - 2023.09
- Helping with Windows AD domain controllers administrative functions
- Managing Windows and Linux server application services, managing and administering Window desktops and applications
- Supporting MS Teams IP phones, Cisco IP phones, network printers, & MAC desktop devices, company iphones.
- Providing configuration management, general request, incident, and break-fix ticketing support via Service Now ITIL IT service management platform.
Senior Network Systems Architect/Engineer
T-Mobile
2021.05 - 2022.11
- Responsibilities in both legacy Sprint network and legacy T-Mobile production networks. On the Sprint side, responsible for managing Sprint IT/Enterprise production datacenter firewalls, and providing operational support for datacenter switches, routers, and application platform servers, working general request and break-fix tickets helping to troubleshoot routing and network element connectivity concerns, application platform access issues, VPN tunnel connectivity and configurations, MPLS tunnel connectivity configuration, and policy concerns.
- Sprint responsibilities also included monitoring system events and performing data analytics using tools such as Q-Radar, NetScout, Wireshark, and Splunk. Writing MOPs to augment pre-existing firewall policy configurations, and to augment and/or modify routing on core switches and routers.
- Additional responsibilities included providing platform CMDB support via ServiceNow and/or Jira ITIL ticketing applications, assessing existing network platform configurations, identifying interconnected platform and network element issues, and adding new DNS entries and/or correcting DNS resolution issues for core network elements, systems and application servers.
- T-Mobile network responsibilities included working Jira and/or ServiceNow tickets requesting help to assess core network interconnected platform configuration and/or connectivity concerns. These issues usually impacted interconnected core network elements such as (Checkpoint & Palo Alto firewalls, Cisco Switches & Routers, F5 Load Balancers, and Infoblox DDI/DNS servers).
- Additional responsibilities included working Change Requests tickets to write and/or modify MOPs (Method of Operating Procedure) to make design changes augmenting existing network element configuration, implementing changes firewalls, switches, routers, or DNS servers to resolve connectivity issues impacting core network connectivity and application access. Or just making changes to augment and improve existing connectivity and access to core systems, applications, and servers
Cyber Security Strategy – Senior Engineer
T-Mobile
2020.07 - 2021.05
- As a new team within T-Mobile, we laid the groundwork for how the team would function withing the corporate network organization. Producing sophisticated documentation, and literature for multiple organizations within T-Mobile.
- Responsible for clearly describing network architecture, design strategies, standards, technical specifications, business benefits, opportunities, and threats.
- Provide input into the definition of Digital Architecture standards as they are crafted.
Senior Engineer Corporate Security
Sprint Communications
2019.11 - 2020.07
- Responsible for assessing network firewall design for Palo Alto and Juniper SRX firewalls, the implementation and support of new network design configurations, and the integration of new network elements into Sprint IT/Enterprise production network datacenters, & the operations & management of IT/Enterprise firewalls, linking a variety of platforms, operating systems, network topologies and network protocols for Sprint production datacenter facility platforms.
- Responsible for helping to lead engineer teams to support project initiatives related to network architecture, the evaluation of new hardware, and software products to support implementation and/or integration new platforms, new feature/functions as well as for pre-existing platforms.
- Responsible for determining if new hardware and software configuration modifications, and new platform implementations to be integrated in multiprotocol core and WAN interconnected networking environments running OSPF, EIGRP, BGP/MP-BGP, ISIS etc., meet Sprint corporate security standards, processes, and procedures.
- Responsible for providing technical support in response to break/fix tickets, by analyzing hardware and/or software, performing data analytics utilizing data analytics tools such as (NetScout, Q-Radar, Cacti, and Wireshark) to identify communication and connectivity concerns, to provide root cause of the problems, and developing/implementing hardware and/or software solutions.
Senior Field Service Engineer
HCA Healthcare
2019.06 - 2019.11
- Upgraded wireless access points from Cisco Aironet 1142s to 2802s across 215 HCA MidAmerica Region/Kansas City Metro area hospitals and clinics.
- Upgraded facility Internet (POP) routers from Cisco ASR 1001’s to ASR 1001-x, and customizing Cisco Prime infrastructure adding sites, associated maps, floor diagrams, and dimensions.
- As well as administering SolarWinds and Cisco Works/Prime network management and event monitoring platforms. Along with administering Cisco Secure ACS appliance and application.
Network Operations Supervisor
Sprint Communications
2014.04 - 2018.04
- SME with 20 years’ experience managing datacenter-based development, testing, and certification networks that were designed as scaled-down replicas of Sprint’s production network for client access test, application development, certification of mobile device features, functions, applications, and network service delivery quality assurance.
- Managed 8 network engineers providing customer and technical support for multiple datacenters in (Burlingame, CA, Lenexa, KS, Overland Park, KS, & Reston, VA), interconnected via a multiprotocol WAN network environment running (OSPF, ISIS, BGP/MP-BGP, etc.) across varied circuits such as (OC-3, OC-12, OC-48, & OC-192) SONET connections and, responsibilities included personnel management, development, training, annual evaluations, design, and engineering level personal assignments.
- Responsible for managing an Operations Help Desk using HP Service Manager ITIL ticketing application and service management application to coordinate workflows for basic & advanced design, implementation, and general connectivity request for core testing platforms, network switches, routers, firewalls, wireless access points/routers, DDI (DNS & DHCP) servers, Jump access servers, AAA (Cisco ACS), LDAP (local server services), and Radius (FreeRADIUS) authentication platform servers.
- We were responsible for network security administration by developing attack mitigation processes & procedures, implementing, and maintaining policy-based routing on all border (Internet & intranet) routers, implementing AD Domain username and password authentication on all networking elements (switches, routers, firewalls, & support servers). Managing and implementing configuration on all core switches, routers, wireless routers/access points (Cisco Aironet & Aruba), and firewalls. We upgraded and maintained 4G core SDN & ACI network switches and routers.
- Responsible for network monitoring using SolarWinds to monitor all Ingress and egress interfaces on all network switches, routers, & firewalls to provide performance management metrics regarding interface utilization & identify abnormal data flows.
- Perform data analytics using Netscout and Wireshark by implementing network level taps for core application platforms & network elements to monitor network performance/data flows and to identify abnormal traffic flows.
- Performed mandatory scanning of any newly implemented hardware/application platform utilizing local system scan utilities like (nmap & wireshark) or core networking applications like SolarWinds to perform subnet wide device scans for known rogue applications.
- Managed & configured Cisco ACS TACACS servers to implement AAA authentication on all network switches, routers, & firewalls in conjunction with AD Domain username and password authentication.
- Used a combination of SolarWinds & Cisco Works for network element device configuration management & change control helping to ensure element uptime & stability.
- DNS/DDI application SME with experience using multiple DDI platforms (Nortel Contivity, BT Diamond, & Infoblox). Responsible for network block allocation for certification lab customer platform solutions, designing, and implementing DNS solutions for all lab platforms (customer and network supporting elements).
- Designed and implemented BT Diamond as replacement DDI solution to replace Nortel Contivity DDI solution. Migrating all major Sprint certification lab domains (lab.sprint.com, pcslab.com, & stic.sprintspectrum.com), all DHCP managed subnets (20), and all IPAM managed IP blocks (6 class B) subnets.
- Responsible for creating and updating organizational design documentation, operational processes and procedures, and operational documentation of network infrastructure creating and updating (layer 2 & layer 3) diagrams/maps utilizing MS Visio.
- My final project was to implement Infoblox DDI application platform as a replacement for BT Diamond DDI.
Lab Facilities Support, Operations & IP Core Design Supervisor
Sprint Communications
2006.11 - 2014.04
- Managed/Supervised 31 contract network engineers providing customer and technical network infrastructure, and platform break fix support for 8 datacenters in (Burlingame, CA, Lenexa, KS, Overland Park, KS, & Reston, VA), interconnected via a multiprotocol WAN network environment running (OSPF, ISIS, BGP/MP-BGP, etc.) across varied circuits such as (OC-3, OC-12, OC-48, OC-192) SONET connections and, responsibilities included personnel management, development, training, annual evaluations, design, and engineering level personal assignments.
- Our team was responsible for network security administration by developing attack mitigation processes & procedures, implementing, and maintaining policy-based routing on all core, WAN, and border (Internet & intranet) routers, implementing AD Domain username and password authentication on all networking elements (switches, routers, firewalls, & support servers) supported by Cisco ACS management servers deployed across datacenter locations. Managing and implementing configuration on all core switches, routers, wireless routers/access points (Cisco Aironet & Aruba), and firewalls. In addition, we upgraded and maintained 4G core SDN & ACI network switches and routers.
- Administered lab certification testing and development network routing policy according to company production standards utilizing route-maps, filter-lists, prefix-lists, and ACLs.
- Managed lab certification testing and development WAN network, as well as core backbone simulated provider edge routers to MVNO customer edge backbone routers.
- Managed the implementation of and designed ITIL best practices such as change management, problem management, OLAs, CMDB, knowledge management, and release management creating a service catalogue utilizing HP Service Desk/Manager Help desk management application platform as a network service delivery and support management solution.
- Designed, Managed, and help implement Lights Out Management solution for core network switches, routers, firewalls, DNS servers, and authentication management platform servers using a combination of Cisco 3640s w/NM-32A Async network modules & Cyclades TS3000 terminal servers.
- Managed and helped draft documentation/diagrams (layer2 and 3) of the network infrastructure utilizing Visio, CAD, and other freeware alternatives.
- Managed a team of contractors and helped to implement network redesigned configurations to facilitate Sprint’s initial steps towards establishing next generation 4G LTE lab certification and testing network implanting the beginning stages of SDN/ACI network infrastructure.
- Managed a team of contractors and helped to implement redundant Internet connectivity redesign permitting exterior and interior load-balancing using BGP and OSPF between the lab and Sprintlink service CRS routers.
- Designed and implemented a sparse-mode multicast network deployment across the internal lab certification network to facilitate video conferencing and testing efforts.
- Led project, and helped to design, configure, and implement improved security infrastructure using a combination of Juniper Netscreen, Cisco PIX, and ASA Firewalls across multiple networked environments, needed to facilitate the merging of Sprint and Nextel communications internal certification testing and development networks.
- Assisted in implementation and installation of IDS/IPS modules in ISG 2000 firewalls to enhance and streamline intrusion detection framework.
Support Lead/Sr. Sys Eng. & Sun SME
Sprint Communications
2000.04 - 2006.11
- Supervised and helped draft documentation of the network infrastructure and systems infrastructure for the STIC (Sprint Testing & Integrations Center) lab datacenter environments and networks
- Managed vendor support contracts for Sun, HP, and some windows servers in the certification testing and development lab network.
- MSDN certification testing and development network server POC, joining new devices to the domain for testing and development purposes, testing new Microsoft OS and application releases.
- Effected and helped complete network redesign to facilitate Sprint’s certification testing and development networks initial steps towards establishing next generation network.
- Troubleshot server side to client-side network connectivity issues to provide and end solution and/or design augmentation.
- Designed, configured, and implemented client server network using Sun Solaris Nisplus.
- Administered and maintained organization internal DNS and Intranet servers.
- Responsible for LAN/WAN troubleshooting, enterprise systems design, implementation, administration, and deployment of platform configuration to internal sites mimicking production distribution sites.
- Responsible for rack mounting, cabling, and deployment of servers, communications, and GPS equipment to be deployed at testing sites.
- Designed and implemented Windows Server NTFS sharing services as well UNIX (Solaris, Linux, & HP-UX) server sharing services. Implemented server user account creation processes and procedures regarding established NTFS and Share Permissions for users/folders/printers.
- Designed and created time tracking and project tracking web application interface (TTracker) Java script and Microsoft Visual Basic 5 & 6 using MS-SQL backend database.
- Designed and implemented mobile device testing help desk and ticketing system, using Rational Clear Quest application client coded in MS Visual Basic and Java script using MS-SQL backend database.
- Configured, Implemented, and maintain Clear DDTS defect tracking database for mobile devices developers, and certification testers using My SQL backend database.
Skills
- Network Operations Support management, personnel development, & training/skills development
- Network design, management, organizational, and group development, and process streamlining
- Network architecture, implementation, integration, migration, administration, troubleshooting, & cabling
- Software engineering, development, & administration
- Network Operations customer help desk support, management, development, and process streamlining
- Cisco switch & router Deployment, IOS, IOS-XR, and NX-OS, software upgrades, and migrations
- LAN/WAN implementations & integrations
- Security /Firewall management, administration, and design
- Data analytics and Deep packet inspection
- Unix/Linux server installation, management, and installations
- DDI application implementations, management, & administration
- Wireless controller/wireless access point installations & administration
- Network element, server, and application, monitoring, security & threat analysis
Mission
To serve as a leader by encouraging innovative and forward-thinking ideas, so that my team can create technological solutions that will improve the function of my company, and hopefully the lives of others.
Skill Sets
Palo Alto Routers/Firewalls: PA 5450, PA 7080, Juniper Switches, Routers, Firewalls: MX 240 & 960, ISG 1000 - 2000, Netscreen 500 – 5400, SSG 550 series, SRX 1000, 3600, & 5800, QFX 5100, 5110, 10008, Cisco Switches/Routers/Firewalls: Routers: Cisco 7606, 7609, 7613, ASR 1001-X, 1002, 1006, 9010 series, GSR 12000 series (12406, 12416, & 124810), Catalyst Switches: 4506, 4510R+E, 6504, 6506, 6509/E, 6513 series switches, Nexus Switches: 5548, 5624, 5672UP, 7009, 7010, 7710, 9508, 9516, PIX Firewalls: 500 series, ASA Firewalls: 5505, 5550, Wireless Routers/Access points: Aruba (AP205, 215, & 225) & Cisco Aironet (1142 & 2802), Cisco IOS-XR, IOS, Nexus OS (NX-OS), Juniper Screen-OS, JunOS (MX/T/SRX) Palo Alto pan-OS 7, & 8.1, Windows OS: Server 2000, 2003, 2008R2, 2012R2, Workstation 2000, ME, XP SP2, 7 Enterprise, 7 Ultimate, 8.0, 8.1, 10, Unix Operating Systems: Solaris 9, 10, 11, IBM AIX 5L 5.2, 5.3, 6.1, HP-UX 9.1, 10.2, 11.1, Linux Operating Systems: CentOS 5.0, 5.5, 6.0, 6.9, 7.0, RHEL 2.1 updates 4- 6, Ubuntu 8.04 – 12.10, (just started 14.05 LTS, Protocols - TCP/IP, NetBEUI, IPSEC, GRE, Routing Protocols - OSPFv3, MP-BGP, ISIS, MPLS, LDP, L2TPV3, Application Tools – HP Service Management/Service Desk, Service Now (CMDB) & Ticketing, VMware Workstation Pro/Workstation 15 Player, BT Diamond DDI, Cisco ACS 5.6, Wire Shark, Cacti, Q-radar, NetScout Sniffers, SolarWinds NMS, Splunk Avaya Contivity VPN Concentrator 5000N, Cisco AnyConnect, Algosec, Winmerge, Shell scripting - Bourne, Korn, Bash, & Csh, Programming - Perl, Python, SQL, Jave script, React, and Visual Basic programming
Certification
TRAINING:
I.T. infrastructure library Certified.
- ITIL V3 Certified (Feb 2011)
CCIE Trained (2017)
- CCIE routing and switching
- CCIE Service Provider
- CCIE security.
JNCIS-SEC/ENT Trained (2018 – WIP)
- Juniper Network Certified Internet Specialist- Enterprise Routing and switching.
F5 BIG-IP & DNS (Feb 2022)
- Admin/Configuring DNS v15
CCSA Trained (Jan 2022)
- Check Point Security Administration R80.40
Additional Information
I have managed, implemented, administered, and maintained a vast variety of hardware platform, application platforms, operating systems, etc. See below:
Cisco Switches/Routers/Firewalls:
- Routers: Cisco 7606, 7609, 7613, ASR 1001-X, 1002, 1006, 9010 series, GSR 12000 series (12406, 12416, & 124810)
- Catalyst Switches: 4506, 4510R+E, 6504, 6506, 6509/E, 6513 series switches
- Nexus Switches: 5548, 5624, 5672UP, 7009, 7010, 7710, 9508, 9516
- PIX Firewalls: 500 series
- ASA Firewalls: 5505, 5550
- Wireless Routers/Access points: Aruba (AP205, 215, & 225) & Cisco Aironet (1142 & 2802)
Firewalls:
- Palo Alto - PA 5450 & PA 7080
- Juniper Switches, Routers, Firewalls - · MX 240 & 960, QFX 5100, 5110, 10008, ISG 1000 - 2000, Netscreen 500 – 5400, SSG 550 series, SRX 1000, 3600, & 5800
Server & Network Platform Operating Systems
- Solaris 9, 10, 11, IBM AIX 5L 5.2, 5.3, 6.1, HP-UX 9.1, 10.2, 11.1, Server 2000, 2003, 2008R2, 2012R2, Workstation 2000, ME, XP SP2, 7 Enterprise, 7 Ultimate, 8.0, 8.1, 10
- · Cisco IOS-XR, IOS, Nexus OS (NX-OS), Juniper Screen-OS, JunOS (MX/T/SRX) Palo Alto pan-OS 7, & 8.1
Timeline
Network Specialist
OITS State Of Kansas
2023.09 - Current
Senior Windows & Mac Eng. Contractor Iron Systems
Hallmark Distribution Center
2023.05 - 2023.09
Senior Network Systems Architect/Engineer
T-Mobile
2021.05 - 2022.11
Cyber Security Strategy – Senior Engineer
T-Mobile
2020.07 - 2021.05
Senior Engineer Corporate Security
Sprint Communications
2019.11 - 2020.07
Senior Field Service Engineer
HCA Healthcare
2019.06 - 2019.11
Network Operations Supervisor
Sprint Communications
2014.04 - 2018.04
Lab Facilities Support, Operations & IP Core Design Supervisor
Sprint Communications
2006.11 - 2014.04
Support Lead/Sr. Sys Eng. & Sun SME
Sprint Communications
2000.04 - 2006.11