SUMMARY:

• Extensive experience managing medium to large scale production environments.

TECHNICAL SKILLS:

Operating Systems: Red Hat Linux, Solaris.

Software: AWS (EC2, EB), Docker, Veritas Cluster Server, Red Hat Cluster Server, Red Hat Satellite Server, LDAP, Puppet, Ansible, Python, Perl, Shell (Bash), sed, awk, LVM, Linux Kickstart, VMWare ESX Server, Apache Web Server, RRDTool, rpmbuild, NFS, NIS, Legato Networker, RAID technologies, Sendmail, SSH, Solaris Jumpstart, TCP/IP, Security and Internet.

Hardware: HP ProLiant servers, IBM servers, Sun servers and workstations.

PROFESSIONAL EXPERIENCE:

Confidential, New York, NY

Senior Systems Engineer

Responsibilities:

• Manage company’s infrastructure of Linux servers.
• Manage clients’ infrastructure of about a hundred AWS EC2 instances running Docker containers.
• Write Python, Perl, and Bash scripts to automate software configuration in context of continuous delivery.
• Manage Puppet infrastructure to ensure consistent servers configurations.

Confidential, New York, NY

Senior Systems Engineer

Responsibilities:

• Managed all aspects of company's infrastructure of several hundred Linux servers across multiple international locations.
• Wrote Bash, Python, and Perl scripts to automate a variety of tasks such as user account management, performance and inventory data collection, patch automation, software configuration, and others.
• Provided software management, OS and application installs, LDAP - based user management in multiple domains.
• Was primarily responsible for OS patch cycle management and security issues.
• Managed Red Hat Spacewalk server and kickstart infrastructure.

Senior Systems Engineer, AVP

Responsibilities:

• Managed company's infrastructure of several hundred Linux servers.
• Worked on automating storage migration using shell and Perl scripts.
• Worked on standardizing storage resources across several hundred system clusters.
• Developed automated Veritas Cluster and Red Hat Cluster creation and resource allocation.
• Wrote various system management and monitoring scripts using Python, Bash, and Perl.

Confidential, New York, NY

Consultant, Senior Systems Engineer

Responsibilities:

• Was responsible for maintaining AWS (EC2) portion of company’s infrastructure.
• Managed company's infrastructure of around two hundred Linux servers.
• Was responsible for new software installations, management, development and documentation of standards, best practices, and run books: Skybot Scheduler, RabbitMQ, Citrusleaf DB, etc.
• Worked on system automation using Puppet, shell, and Perl scripts.

Confidential, New York, NY

Consultant, Senior Systems Engineer

Responsibilities:

• Transitioned company's infrastructure of thirty Linux servers to hosting service and third-party management.
• Cleaned up and simplified procedures for software releases.
• Clarified, consolidated, and partially eliminated legacy scripts which accumulated over the years.

Confidential, New York, NY

Senior UNIX Systems Engineer, AVP

Responsibilities:

• Responsible for installation, configuration, and maintenance of the company’s farm of around 100 HP DL-class servers running Red Hat Enterprise Linux, from the ground up. Company had no Linux servers prior to this effort.
• Developed standards and best practices for building Linux server environments.
• Created the automated Linux OS installation environment based on Kickstart and PXE technologies, including package selection, post-install OS configuration, and automatic installation of third-party software (HP PSP, Legato client software, etc.)
• Installed, maintained, and used Red Hat Satellite Server for installation and patching of RHEL servers. Supported a number of Red Hat Linux desktop users.
• Developed the framework for automatically configuring applications in the company’s Disaster Recovery site.
• Converted much of the company’s operation from Solaris 8 to Red Hat Linux.
• Solely responsible for installation, day-to-day maintenance and configuration changes, upgrades, and writing all supporting scripts for the company’s
• Java-based FIX interface to clients (Appia/CRouter).
• Supported JBoss-based Tradescope application, used to control all FIXrouter engines.
• Installed and maintained an infrastructure of VMWare ESX servers, transitioned Linux servers from physical onto the virtual platform.
• Designed and maintained software for multi-host, multi-process automation and monitoring, complex log file analysis, as well as for performance monitoring and graphing using shell (bash), Perl, RRDTool, and Apache Web Server.

Confidential, New York, NY

Consultant, UNIX Systems Engineer

Responsibilities:

• Built and deployed a secure access solution based on OpenSSH and TCPD.
• Provided 24x7 support for company’s Solaris-based farm of 30 servers.
• Worked on server hardening based upon VISA CISP security guidelines.
• Identified potential security vulnerabilities and recommend and deploy fixes.
• Built and installed Solaris packages, installed OS patches.
• Provided employee on using security tools.

Confidential, Middletown, NJ

Consultant, Senior Systems Engineer

Responsibilities:

• Provided high-level engineering of Solaris-based solutions for the Worldnet & Broadband Development Division of AT&T Labs.
• Identified, and eliminated security vulnerabilities of clients’ systems.
• Developed a comprehensive framework of scripts to automatically identify known issues, deploy relevant patches, verify results, and generate reports.
• Evaluated different software and hardware options to identify optimal solutions within specified budget guidelines.
• Engineered and deployed solutions for new installations, as well as for upgrades of existing systems for AT&T’s clients.
• Coordinated OS and Applications’ upgrades across over 500 servers.
• Helped design ways to stress-test hardware, which was to be proposed for implementing new services to AT&T’s clients.

Confidential, New York, NY

Consultant, Senior UNIX Systems Administrator

Responsibilities:

• Provided high-level UNIX consulting on a contract and support basis.
• Was responsible for 24x7 support of company's infrastructure of Linux Red Hat 7.3, 8.0, and 9.0, Windows, and OpenBSD 3.1 servers and workstations, as well as Web processes such as Email management, DNS, NIS, and NFS administration, Apache Web Server configuration and maintenance, and CGI programming.
• Provided installation and support of SunONE family of servers including Application, Web, Directory, Identity, and other servers. Designed tools and procedures to automate and enhance functionality of system software and improve productivity of company’s clients.
• Designed tools to measure systems’ performance, automate system installation, upgrades, patching, and nightly batch processing.
• Provided software and hardware products evaluation, purchasing recommendations, support, and vendor relations for company’s clients.
• Was responsible for security implementation and systems' maintenance.

Confidential, New York, NY

Senior UNIX Systems Administrator

Responsibilities:

• Solely supported company's infrastructure of Solaris 7 and Solaris 8 servers, including DNS management, and NIS and NFS hierarchy design and implementation.
• Installed, configured, and supported Sybase database servers (Sybase v. 12.0); performed migration and consolidation of multiple Sybase servers.
• Installed, configured, and supported Solstice DiskSuite and hardware RAID using Sun's A-1000 and EMC Clarion Disk Arrays.
• Installed and configured Cisco routers and switches.
• Upgraded internal network from 10BaseT hub-based to 100BaseT switch-based.
• Wrote Shell and Perl scripts for systems’ performance measurement and monitoring.
• Proactively insured systems’ compliance with latest industry standards. This included regular auditing of patch level revisions, as well as monitoring vendors’ and independent web sites for relevant announcements (bug fixes, new security threats, etc.)
• Designed, written and implemented a backup system and a custom Jumpstart server.
• Provided 24x7 comprehensive (levels 1 through 3) support of the mission-critical applications, as well as day-to-day technical and developer support.

Confidential, New York, NY

Senior UNIX Systems Administrator

Responsibilities:

• Supported distributed infrastructure of servers running Solaris 2.6 and Veritas Volume Manager.
• Set up and configured Internet connectivity for the company: installed Cisco routers and switches; built firewalls (CheckPoint and Gauntlet), Email gateways, HTTP and other proxy services; configured Sendmail, Apache Web Server, and DNS.
• Configured and supported Legato Networker backups system.
• Set up company and clients' networks and hosts monitoring using Sun Domain Manager.
• Wrote software management and performance monitoring scripts using Shell and Perl.
• Proactively insured systems’ compliance with latest industry standards (patch level currency, protection from latest security threats, Y2K-related upgrades other bug fixes).
• Resolved all failures in production environment including problem diagnosis