
Independent Telecommunications Professional, VoIP Expert
Ukraine

Independent Telecommunications Professional, VoIP Expert
Ukraine
My current duties concern SIP VoIP networks which are based on fast-developing technologies. That is why I spend a lot of my time keeping my knowledge in the areas at a high level.
I'm also interested in performance analysis of complex computer systems, FreeBSD OS, networks based on Cisco equipment and network monitoring systems.
As an open source adherent I support some open source projects. For my daily routines I developed several tools to debug and troubleshoot SIP protocol (RFC 3261 and related). FreeBSD is my desktop OS, however Microsoft OSes are also in use (I do not like religious wars).
Speak Ukrainian (native), English and Russian.
KISS principle is my credo (Wikipedia://KISS_principle).
Plans for the future: MBA IT Management program.
IT Infrastructure Management
Project Management
VoIP Solutions Expertise
Details:
Perl, Bourne Shell scripting
FreeBSD, Linux, Cisco IOS
Networking, Internetworking, OSPF, BGP
EMail, MySQL and WEB servers
VoIP, SIP, PortaSwitch, PortaSIP soft-switch, PortaBilling
Complex networks and servers monitoring
(Self-Employed; Myself Only; Telecommunications industry)
September 2007 — Present (1 year)
Consulting services in VoIP mainly.
(Non-Profit; 201-500 employees; Computer Software industry)
May 2006 — Present (2 years 4 months)
I maintain some ports from the FreeBSD Ports Collection - http://portsmon.freebsd.org/portsconcordanceformaintainer.py?maintainer=tut@nhamon.com.ua
(Privately Held; 51-200 employees; Information Technology and Services industry)
January 2005 — August 2007 (2 years 8 months)
Primary responsibilities:
* system architecture development;
* prepare technical specifications;
* perform interoperability tests.
Interact with:
* system architects - write and discuss technical specifications for new features;
* software engineers - coordinate developers from different departments to implement the new features;
* QA engineers - help with the new features testing;
* sales - pre-sales customer support;
* support engineers - process escalated technical issues, training in the SIP VoIP technology;
* customers - assist with high priority critical issues, advice on VoIP solutions;
* hardware vendors and VoIP providers - perform compatibility and interoperability tests.
Key achievements:
* software upgrade procedures were formalized and simplified to reduce services downtime;
* "RFC 3261 and PortaSIP" training course was developed for the company's staff
* monitoring system for PortaSwitch servers was developed.
(Government Agency; 1001-5000 employees; Judiciary industry)
June 2003 — November 2005 (2 years 6 months)
Primary responsibilities:
* maintain core network infrastructure (IP and Frame Relay).
Key achievements:
* network monitoring system was deployed;
* transparent QOS over the company network was implemented.
(Privately Held; 51-200 employees; Information Technology and Services industry)
November 2003 — December 2004 (1 year 2 months)
Primary responsibilities:
* provide technical support (in English) of the company’s products and related systems through electronic mail, phone communications, remote access and physical presence;
* respond to letters, telephone calls and other messages in a diligent manner;
* troubleshoot system malfunctions;
* investigate and analyze the root of problems.
(Privately Held; 11-50 employees; Telecommunications industry)
2000 — May 2003 (3 years)
Primary responsibilities:
* maintain core network infrastructure (IP and Frame Relay);
* plan the network expansion;
* keep the network documentation.
Key achievements:
* network monitoring system was deployed;
* WEB based system for IP address assignments was implemented and deployed.
Computer Science, Computer and Information Sciences, Computer Systems Networking and Telecommunication, Statistics, 1995 — 2001
Graduated with honors. Diploma titled “Automatic accounting system of IP traffic in distributed network”.
skydiving, skiing, biking, mountain hiking
UAFUG, developers.org.ua, SIP-implementors, UANOG, NANOG, Cisco-NSP
3rd place in the Ukrainian National Programmers Competition among students, 1999, Kharkiv, Ukraine