Dmitri Astaltsev Email & Phone Number

Sydney, Australia

- Responsible for maintaining core infrastructure and providing high-level system administration, network administration and database administration support for Squiz client systems and services.- Interpret functional specifications and assist technical solutions discovery.- Write/maintain automatic deployment and/or configuration scripts (puppet.

Herndon, VA

• Designing, building and supporting company-wide IT infrastructure (Web servers, Wiki, management servers, workstations, firewalls, SVN, VoIP, BlackBerry Enterprise Server, backup, email, eGroupware, VPNs etc.);
• Overseeing and implementing corporate security policies, including network, physical and application security policies;
• Developing, deploying and maintaining corporate InZero Gateways security policies;
• Responsible for production, QA and development environments for the InZero Management servers, InZero Systems corporate website, email and firewall;
• Migrating to a corporate VoIP telephone system; planning and managing of the company's telephone system;
• Playing a key role in designing, planning, and testing of new hardware and software products developed by InZero Systems;

Herndon, VA

• Designing architecture of several new projects and re-evaluating existing to improve stability, security, apply HA & DR standards etc;
• Capacity planning;
• Working with dev teams on creating security policies (users, roles, groups) for all applications deployed on the platform;
• Single point of contact for several 3rd party vendors and external consumers;
• Leading project of transferring 2nd tier of support from operations to service desk;
• Project planning and implementing of moving servers out from closing datacenter;

Herndon, VA

• Building and managing 5 environments (RHEL 4-5, BEA Weblogic 9.2, ALSB 2.6,Tomcat). Up to 110 servers;
• 24x7 on-call production support: new releases, troubleshooting, RCA, patch deployments;
• Playing a key role in designing new architecture for HA & DR;
• Performance testing and capacity planning for all environments (proxy, application and DB tiers);
• Automating deployment process using bash, WLST, Perl;
• Working with BEA/Oracle on open cases (from reporting a bug to installing a patch);

• Building and managing up to 7 environments consisting of BEA Weblogic 8-9, ALSB 2.6, Apache Tomcat and 3rd party Rating & Billing system
• Managing SSL certificates
• Configuring, maintaining Nagios monitoring system. Contributing to open source project Fruity for easier configuration of Nagios
• Building, configuring and supporting VMWare virtual servers (Linux & Windows)
• Created a front end (HTML, Perl, JavaScript, CSS) for automated deploy script for Weblogic 8.1and 9.2 to make deployment process to different environments ~4x times faster
• Adding functionality to open-source OTRS ticketing system

Joined project with AOL LLC

• (Joint project with Target Labs Inc)
• Linux administrating, Web hosting, network administrating (Enterprise Linux, Linux Red Hat, Mandrake)
• VoIP gateways installation and configuration; VoIP gatekeepers installation, configuration and support
• H323 proxy (OpenH323 Gatekeeper) configuring and support
• VoIP applications Installation & support)
• Designing and developing software packages (CGI programming, Web interfaces to access PostgreSQL, LDAP and Oracle databases: SQL, Perl DBI, PHP, HTML, XML, JavaScript)

• Network & UNIX administration, Web hosting (FreeBSD, Linux, Apache)
• Managed a group of technical personnel, responsible for the operation of LAN, customer paging services, office's phone station and phone lines configuration, troubleshooting and maintenance
• Designed and developed software for paging services: CGI programming, TCP/IP apps, Web interface to access databases, Internet pager gateway
• Radio equipment servicing (transceivers, amplifiers, receivers, antennas, feeders etc)
• Radio Ethernet equipment installation & support
• Special hardware installing, tuning and support (paging terminal, multiplexers etc)

Rostov Region, Russian Federation

• Corporate clients' maintenance: LAN designing and building, intranet to Internet routing, LAN security;
• LAN administrating and troubleshooting (12 workstations), network hard- and software managing, telephony, office equipment servicing;
• Company Web site designing & maintenance;
• CGI programming using Perl CGI and shell scripts;
• Installed & administered CISCO routers 26xx/25xx series;
• Network & UNIX administrating;