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, ansible). - Provide guidance to junior team members.- Assist with technical estimates and tenders.- Propose and implement improvements to Squiz standards and best practices.- Deploy and configure application stack components as per requirements, standards and best practices.- Monitor server health status for Squiz hosted systems, fix any identified issues.- Perform Root Cause Analyses (RCA) of issues, compile incident reports.- Pro-actively assess emerging trends & technologies.- Write and maintain client environment and/or application documentation.

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;• Designing and leading the implementation of corporate backup policies in HQ, company datacenter and remote (Ukraine) offices;• Writing set of tools (Perl, OpenSSL, Parallels) for automated deployment of InZero Management Servers that reduced deployment time from 15-20 minutes to ~45 seconds;• Migrating corporate CRM from outsourced SalesForce to in-house Sugar CRM system;• Maintaining corporate and support CAs, issuing personal and InZero Gateway SSL certificates;• Training new members of InZero support team on the InZero products as well as IT security in general; Tier 3 customer support;• Assisting sales and marketing teams with tools and automated process by integrating corporate website with CRM system (SalesForce and later Sugar CRM), ticketing system, phone system;

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;• Leading HA & DR testing and planning for production;• Training new system and application administrators;

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);• Mentoring junior team members;

•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•Last level support for production issues relating to Weblogic servers and Rating & Billing issues•Installing and administering Oracle 10.x Databases•Managing 100+ Redhat, Solaris and Windows Servers: procurement, imaging, application management & troubleshooting, customer support, OS & network troubleshooting, patching•Mentoring junior team members

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)•Developing scripts for UNIX administration using Perl and UNIX shell•TCP/IP software developing and support (TCP, UDP Sockets)•Perl modules developing•Flash actionscript, XML, XML-socket programming•JavaScript programming•Installation and configuration of Apache web server on Linux (RHEL, FreeBSD, Windows)•PostgreSQL server installation, configuration and support•CVS server administrating•IP software for video streaming support & developing on Linux

•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)•Designed and developed paging repeater hardware-software complex, developed software decoder of POCSAG signal for IBM PC/AT (Turbo Pascal + Assembler)•Designed and developed a software for automatic e-mail headers sent from POP3 account to pager•Designed and developed an application for automatic pager messages roaming through the Internet via e-mail or SNPP

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;• New hardware and software testing