Alexey Toptygin
7820 Grand Estate Dr Apt 2213
Raleigh, NC 27617
+1.443.538.5187
alexeyt(at)freeshell.org

 

Professional Summary:

• BS in Mathematics from the University of Maryland, College Park.
• 7 years of programming, software design and development experience in C.
• 6 years perl programming experience, including XS and Win32-specific code.
• 4 years system administration experience on Linux, MacOS and Windows.
• 4 years network administration experience in IPv4 LANs.
• 2 years network engineering experience in GSM and GPRS networks.
• 2 years system test experience.

Programming Experience:

• In Languages: C, perl, php, python, C++, UNIX shells.
• On Operating Systems: Linux, Solaris, NetBSD, FreeBSD, Win32.
• Experience with all phases of the product lifecyle.
• Experience with Scrum methodology.

System Administration Experience:

• Mail, DNS, Web, FTP, CIFS/Samba and streaming audio servers
• Complex firewalls and IPSEC VPNs
• Administration of remote sites
• Automation tools: Nagios and Puppet

Test Experience:

• Writing and executing test plans.
• Evaluating test tool requirements and building test tools.
• Creating automated tests and automated testing environments.
• Working with test case management tools and ISO 9001 processes.

Telephony Chassis/Systems/Protocols Experience:

• SMS messaging over the SMPP 3.4 protocol.
• Compact PCI (CPCI) + H110 hardware.
• Global System for Mobile Telecommunications (GSM) networks.
• GSM Packet Radio Service (GPRS), including:
  • GPRS Mobility Management.
  • GPRS Network Service over Frame Relay.
  • Signaling System number 7 (SS7) components.
• PLMN/PSTN circuit switched voice and data, including SS7 signaling.
• SIGTRAN protocols including SUA and M3UA.
• TDM physical layers including T1, E1, V.35.

Work Experience:

June 2011 to Present: Bronto Software

• As a member of the Production Software team, responsible for managing code deployments, finding and fixing critical bugs, developing internal tools and continuously monitoring the health of the Bronto SaaS application.

December 2010 to April 2011: American Research Institute

• Developed, tested and maintained ARI's e-learning and Video on Demand applications.

November 2006 to November 2010: Message Systems

• Performed system test planning, execution and automation for Message Systems Momentum and Message Central product lines.
• One of the two designer/implementors of Message Systems integrated SMS functionality (Mobile Momentum).
• Designed, developed, tested and maintained the Message Systems MTA (A.K.A. Ecelerity).
• Designed and implemented new generation configuration subsystem allowing for transactional online configuration changes on a running instance.
• Worked closely with customers in creating customer-specific extensions to product capabilities.
• Participated in DKIM interoperability testing event hosted by ALT-N on behalf of Message Systems.

June 2005 to October 2006: Gemini Security Solutions

• Preformed security reviews of, and wrote security configuration guides for a variety of products.
• Wrote a threadsafe, caching NTLM single-signon (via Samba against ActiveDirectory) authentication plugin for Sun's iPlanet web server.
• Ported a threadsafe, caching PKI authentication plugin from iPlanet to Apache and repaired portions of the underlying PKI library.

April 2003 to June 2005: Tecore Wireless Systems

• Lead developer in the System Test Automation group.
• Point of contact to several upstream software and hardware vendors. Responsibilities include maintenance, troubleshooting and issue tracking for all instances of those vendors' product.
• As one of two system administrators at Tecore, installed, maintained and supported Linux and Windows servers and workstations.
• Technical lead on GPRS integration project at Tecore, as part of System Test group.
• Wrote test plans and preformed feature and regression testing on several products as a member of the System Test group.
• Built and administered multiple Linux firewalls/routers with functionality including NAT, IPSEC, firewalling, traffic shaping and policy routing.
• Wrote a variety of utility scripts and programs in C, perl and UNIX shell for both Windows and Linux platforms.
• Built and administered FreeBSD firewall using ipfw/dummynet for traffic delay simulation. Later, migrated simulator to netfilter/netem on Linux.