Experience

CMT Capital Markets Trading

• United States
• Investment Management
• 1 - 100 Employee

• Sr. Network Engineer

  • Mar 2021 - Present



TD Ameritrade

• United States
• Financial Services
• 700 & Above Employee

• Consultant, TechOps Eng

  • Mar 2019 - Oct 2020



CMT Capital Markets Trading

• United States
• Investment Management
• 1 - 100 Employee

• Sr. Network Engineer

  • Sep 2016 - Mar 2019

  • Migrated metro circuits between datacenters in New Jersey to passive wave DWDM • Redesigned datacenter connectivity to financial exchanges utilizing xCelor XPM switches to reduce latency for market data and orders to the lowest possible round-trip times • Redesigned Layer 2 and Layer 3 connectivity for the global network, eliminated unused routing protocols • Replaced old Cisco ASA 5500 firewalls with new ASA 5500-X devices, migrated all NATs and VPNs to new formats • Optimized multicast flow between datacenters • Installed GPS connections using Spectracom devices in each financial datacenter • Replaced old Cisco 4500M and Arist 7150 switches with Cisco Nexus 3548’s and xCelor XPM3 switches • Installed and configured monitoring and troubleshooting software, Zenoss and Netbrain, to shorten alert and resolution times for outages, configured both systems to perform weekly backups of all network device configurations • Cleaned datacenter cages by removing unused devices, installed cable management and separated fiber and copper cable bundles • Created rack elevation diagrams, patching matrices for devices, and L1/L2/L3 network diagrams for each datacenter • Configured and optimized BGP peering with Exchanges for trading • Wrote Python Scripts to automate network documentation, config backups, and basic troubleshooting tasks. • Linux Trade server configuration and troubleshooting • Designed and built a Linux based system using open-source tools to Authenticate Cisco VPN Anyconnect users using a combination of their Active Directory credentials and Google 2 Factor Authentication • Designed and built an Amazon AWS cloud spread across 5 locations, connected it to our existing legacy network via Direct Connect, and two site to site VPN backups, designed and built the route redistribution between Legacy and AWS network with BGP and Eigrp route redistribution Show less



ABN AMRO Clearing Chicago LLC

• Financial Services
• 1 - 100 Employee

• Sr. Network Engineer

  • Aug 2014 - Aug 2016



ICE Data Services

• United States
• Financial Services
• 700 & Above Employee

• Sr. Network Engineer

  • Oct 2009 - Aug 2014

  • Design, test and implement new network infrastructures for customers in North America, Europe and Asia • Improved the performance and availability of existing networks • Maintain and develop monitoring systems • Performed problem and incident management troubleshooting TCP/IP, multicast, BGP, MPLS and OSPF routing, network address translation and security solutions • Prepare and execute network changes • Create and maintain documentation • Create reports regarding performance and availability • Prepare documentation of new and existing networks using highly Visio diagrams • Worked daily as a member of 7ticks CAB(change advisory board) to verify changes and configurations met approved standards in order to minimize negative impact to network production environments Show less



Penson GHCO

• Network Engineer

  • Nov 2008 - Sep 2009

  • Worked with minimal supervision on a 2-man Network Operations Center team • Maintained a large Cisco Network with locations in 5 countries • Monitored systems using Cacti, Smokeping and Zenoss • Assisted in the design & implementation of a datacenter migration to a larger cage at the 350 E. Cermak Equinix Facility • Worked with Cisco 6500, 4948, 3550 and 2950 L3 series switches, FWSM's, ASA's and 3750 series routers • Worked on a team performing an ISP circuit review resulting in the elimination of 8 lines that were replaced with Point to Point VPN connections • Worked with ISPs (Cogent, Yipes, AT&T, etc.) to maintain, monitor and troubleshoot Circuit issues • Configured multiple Firewall context configurations for new customers, client VPN's and VRF routed networks within our infrastructure providing clients with access to co-located servers Show less



US Datacomm

• Freelance Network Administrator

  • 2005 - 2009



ITG Derivatives

• Network Administrator

  • Mar 2007 - Oct 2008

  • Worked with minimal supervision • Maintained over 100 Cisco devices in a legacy and growing datacenter replacement network. • Monitored systems using Cacti, PRTG, Smokeping, and WhatsUp Gold • Designed & architected a low latency network in a lights-out datacenter & was instrumental in migrating services & clients to the new cage • Rebuilt IOS configuration & network layout of Legacy network to conform to Sarbanes Oxley standards for SOX Compliance Audit • Performed monthly audits of all new & legacy network devices using CIS Router Audit Tool (RAT) • Moved customer’s dedicated circuits and hosted servers from edge devices in Legacy network to new datacenter, configured new VPN accounts, built ACLs for customer access to specific unicast & multicast data, configured NAT translation, and static port mapping on Cisco ASA 5500’s for Web access to financial data Application servers • Worked with ISPs (Cogent, Yipes, AT&T, etc.) to reconfigure dedicated services between Chicago, New York, and New Jersey data centers, performed a circuit & datacenter audit that led to a large consolidation of both into fewer sites, upgraded bandwidth, implemented QOS to optimize FIX engine data flow from markets to business & customer servers • Replaced outdated Cisco PIX devices with ASA 55xx series in new datacenter • Redesigned and configured network’s VTP architecture. Replaced STP with RSTP • Consolidated multiple IP Multicast VLANs into one core IP Multicast VLAN. Implemented PIM & IGMP, streamlined & optimized data path from financial markets to application servers, to customers • Performed ongoing migration from static IP routes in the core & distribution of the network to OSPF. Implemented redistribution from customer’s & market’s routing protocols (BGP, RIP v.2, OSPF) into ITG-D’s internal OSPF network • Designed & built the new datacenter’s Internet module using a multi-homed BGP failover connection across 2 7206VXR’s, and two service providers Show less



Scientel Solutions

• United States
• Information Technology & Services
• 1 - 100 Employee

• Sr. Network Administrator

  • May 2005 - Jan 2007

  Worked with minimal supervision • Designed & implemented Router, Switch, Security & IP configurations for municipal wireless customers such; • Setup and configured local and network printers on user's workstations • Setup and configured Cisco 2900, 3500, 4000 & 6500 series switches, 1700, 2600, 3600, & 7200 series routers • migrated from Cisco PIX 506 to ASA 5510, implemented individual VPN accounts using ESP-AES-MD5-HMAC transform sets • Designed, built, troubleshot & maintained a VOIP phone solution with Call Manager 4.1 using MGCP & SIP, Cisco 7960 phones, 2 3560 Switches, and a 1760 router Gateway • Perform Monitoring & troubleshooting of Customer Wireless network, and wired infrastructure • Maintained desktop security and virus control via updates and patches • Maintained PC/Server and printer communications • Performed Active Directory Adds, deletes, password policy changes, and account permissions settings on Windows 2003 Servers • Implemented, monitored, & maintained a weekly backup solution using Symantec Backup Exec 10d • Configured and troubleshot Microsoft Exchange Server 2003 issues, accounts and settings Show less



AT&T

• United States
• Telecommunications
• 700 & Above Employee

• Network Surveillance Manager

  • Jun 2004 - May 2005

  • Provided fault isolation, proactive maintenance, status of data circuits, monitored customer network equipment • Assisted in the collection of customer requested data • Utilized a broad range of knowledge of Cisco Routers, Catalyst Switches, PIX Firewalls, IDS Sensors, & VPN Concentrators to remotely troubleshoot & diagnose problems • Performed routine Tuning of ID Signatures on Customer's Cisco 4210 IDS • Fixed problems & errors with ISDN, Frame Relay, T1, T3, DS3, ATM, OC-3 (Sonet), & xDSL • Fixed problems & errors with different protocols such as: TCP/IP, UDP, SNMP, BGP, MPLS, & OSPF • Troubleshot SBC & Customer BGP Peering & routing issues. • Utilized BGP Confederations to Aggregate multiple BGP AS's into one AS • Optimized & tuned AS ingress & egress traffic paths utilizing Local-Preference weight & multi exit discriminator attribute • Configured multipath load sharing over MPLS networks • Configured BGP community values to control upstream routing policies • Troubleshooting & Configuration of SBC MPLS Backbone • Used network monitoring tools & ticketing systems such as Naviscore, HP Openview & CiscoWorks • Used Knowledge of VPN, VoIP Gateways, Unified Messaging, Carrier Circuits • Set up & configured Cisco 1760v, 2600, 3600, 7600, Routers, & 2900, 3500, 4500 series Switches • Performed initial troubleshooting & configuration of customer's Call Manager & Unity servers • Performed initial troubleshooting & configuration for customers Voice Routing Protocols & Voice Gateways Show less



COLUMNIT

• Help Desk level III/Network Support

  • Mar 2004 - Jun 2004

  AD Administration, DNS configuration & troubleshooting • Performed Migration of users, resources, & workstations to Win2k/ Active Directory from to Windows NT4 • Created, modified, deleted, disabled user, computer, and group accounts, unlocked & reset domain passwords • Provided 3rd tier support for helpdesk user problems pertaining to user accounts, passwords, drive mappings, software & hardware issues • Assigned, removed, & restricted NTFS permissions • Assisted in the migration of regional file systems from NT4.0 to Active Directory • Performed directory structure & file management on regional file systems • Created backup images of user's computers with Norton Ghost, tested new images, loaded them to new pc's & then distributed them to end-users • Troubleshot Checkpoint Firewall, Wireless Security & connectivity issues • Performed routine Tuning of ID Signatures on Cisco 4210 IDS Show less