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2004 - VoiceStar (a Marchex Company)
Chief Technology Officer
2001-2004 Consulting
Provided a number of Internet solutions to various companies. Some examples:
- Large advertising company - Provided recommendations on network upgrades to improve capacity and reliability. Assisted with network migration. Implemented BGP, OSPF, and HSRP. Trained staff.
- Consulting company - Designed and built reference implementation of a Traffic Capture and Analysis product for use in national infrastructure protection.
- Suburban Private School - Analyzed network and firewall, provided recommendations for improving security.
1999 - 2001 NetReach Inc.
Chief Technology Officer
NetReach was a provider of Internet solutions focusing on advanced web development,
e-commerce, and mission-critical hosting.
- Managed team of network operations and system administration staff.
- Trained other employees in cisco IOS, UNIX, TCP/IP, routing, and programming.
- Designed and built large regional T1/T3/SMDS/ATM/FR cisco-based network.
- Designed and built numerous large 10/100/1000 ethernet based LANs.
- Designed and deployed OSPF/BGP/HSRP routing across network.
- Designed and deployed 802.1q VLAN technology.
- Built and administrated large number of Sun/Solaris/Linux/UNIX servers.
- Developed and deployed high-availability and redundant web server arrays using cisco routers, switches, and load-balancers.
- Developed and deployed high-availability and redundant email, DNS, and web servers using cisco and Sun based equipment running sendmail, qmail, bind, and apache.
- Wrote perl software to monitor company's networks, servers, and telecommunications facilities.
- Wrote web, SQL, and perl based application for documenting and tracking company's and customer's servers, routers, and telecommunications facilities.
- Wrote numerous programs in C, C++, perl, and SQL to simplify deployment of new services for customers.
- Wrote software to track, allocate, audit, and SWIP IP address blocks.
- Worked to deploy services for customers and troubleshoot problems with networks, servers, and telecommunications facilities.
- Improved security of company and customer networks using servers, routers, switches, and firewalls from various vendors.
- Improved security of company Sun/Solaris/Linux/BSD servers.
- Worked with other departments in company to develop technical solutions to internal and external customer problems.
- Interfaced with telecommunication companies for negotiating, provisioning, and troubleshooting telecommunication facilities.
- ... and documented all of it.
1995-1999 OpNet Inc.
President and Founder
OpNet was one of Philadelphia's first regional Internet Service Providers.
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Hardware -
Sun Sparc & 68k, x86 PC, Cisco routers and switches, Lucent routers & terminal servers
Operating Systems -
UNIX, Solaris, BSD, Linux, Cisco IOS, ComOS
Programming -
perl, C, C++, HTML, SQL, postscript, assembler, lisp, forth
Software -
sendmail, INN, BIND, apache, NFS, NIS, amd
Network Technologies -
T1, T3, ISDN, Frame Relay, ATM, SMDS, PPP, HDLC, DSL, ethernet, 802.11, 802.1q
Protocols -
OSPF, BGP, RIP, TCP/IP, IPv6,
SMTP, NNTP, POP, SNMP, HTTP, NTP, DHCP, RADIUS, DNS
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