HPCC Linux System Administrator

Dmitry Lapenkov HPCC / Linux System Administrator

**** ******* ****** *** ** Fort Lee, NJ 07024 347-***-**** *********@*****.***

LinkedIn profile: http://www.linkedin.com/in/dlapenkov

SUMMARY

16 years of extensive hands-on Linux system administration experience

10+ years of Linux production support including 4 years of 24x7 support for HPCC genomics big data pipelines covering around 300TB

Excellent Linux system administration skills, fluent in Red Hat / CentOS and Debian Linux, strong knowledge of HPCC cluster management software (SGE/UGE, Slurm), extensive experience with LAMP platform

Extensive experience with building, installation, configuration and management of physical and virtual Linux systems and applications

Excellent MySQL and MariaDB database administration skills, solid experience with PostgreSQL

Fluent in Perl and UNIX shell scripting (bash, sh), proficient in C programming

Hard-working, result-oriented team player with can-do attitude and excellent learning abilities

Able to work productively and independently

SKILLS

Operating Systems: Debian Linux, Red Hat / CentOS, Ubuntu, UNIX, MS Windows

Languages: Perl, bash, sh, C

Web Technologies: Apache httpd, Apache tomcat, Nginx

Databases: MySQL / MariaDB, PostgreSQL

Cloud Computing Technology: AWS EC2, S3

Storage: Hitachi, Terascala, Dell

Container Technology: Docker

Software: SGE/UGE, Slurm, VMware, Proxmox VE, Zimbra, postfix, OpenLDAP, ansible, SAMBA, Zentyal, Endian Firewall, Lucid, Redmine, Nagios, various GNU tools

Networking: TCP/IP, NFS, DNS, LDAP, FTP, HTTP, SSH, SAMBA/CIFS

EMPLOYMENT

03/17 – present HPCC Linux System Administrator, Bioinformatics at GenPath Diagnostics, BioReference Laboratories Inc – Elmwood Park, NJ

Supported production pipelines of a large biomedical laboratory providing 24x7 Linux system and application support under strict HIPAA privacy / data security rules

Managed production HPCC Linux clusters using SGE/UGE and Slurm on a daily basis, managed multiple NAS and DAS storage, performed and managed regular backups and archives of production data

Using corporate ticketing system, Confluence and Jira, collaborated with genomics scientists and wet lab technicians as well as with IT and Network teams helping them with day-to-day HPCC cluster operations and issues, Linux-to-Windows interconnection, and with resolving Linux system and network issues

Performed daily system administration for large production Linux environment including hardware and software management, user management, automation, OpenLDAP management, configuration management, application software installation, configuration and management, system security management, NAS and local storage management, file backups and restore, disaster recovery planning, system audit, log management, datacenter operations (iDRAC, IPMI), documentation

Supported development, staging and QA Linux environments for Bioinformatics department including configuration and management (using ansible) of docker system services and MySQL databases

Monitored availability and performance of Linux systems and services, optimized performance by tuning Linux kernel parameters

Installed, configured and managed customized monitoring system for production Linux environment

Built, Installed, configured and managed numerous Linux physical and virtual servers in VMware ESXi and Proxmox virtual environment

Installed and managed software applications for analyzing sequencing data including Illumina TSO500 and ArcherDX. Worked closely with application team to support various Big Data tools

Developed a number of Perl and shell scripts, modified existing Python scripts, debugged legacy code in mixed Linux / Windows environment, developed simple web apps for system administration purposes, consulted developers and business users on various Linux issues

10/16 – 01/17 Linux System Administrator / Security Analyst (consultant) at The Joint Industry Board of the Electrical Industry – Queens, NY

Supported production and development Linux / Ruby on Rails / PostgreSQL environment.

Installed and set up a few physical and virtual (VMware ESXi) Linux servers, new internal DNS (bind) servers, PostgreSQL backup server.

Set up Nagios XI, naglite dashboard for Nagios XI, Monitorix monitoring tool.

Migrated a few physical Linux servers to VMware Virtual Environment

09/15 – 07/16 DevOps / Linux System Administrator (consultant) at Wasabi Rabbit – New York, NY

Maintained corporate IT infrastructure of a small company, performed daily system administration for mixed Linux and Mac OS environment.

Maintained and monitored Linux production environment providing 24x7 on-call operation support. Maintained Ubuntu Linux servers in the multiple Rackspace data centers running Apache and Nginx Web servers, MySQL databases, PHP and Ruby on Rails. Secured and hardened production environment.

Deployed and maintained Debian-based Proxmox VE for development environment, set up and maintained network backup for Proxmox VE. Developed and deployed customized monitoring for production and development environments.

Performed MySQL database administration for development, staging and production environments including database replication, database backup and restore, dump / reload, archiving, user administration

In order to improve the stability and performance of company’s internal network, installed and set up new internet gateway, new network switches and VPN appliances. Set up internal DNS, DHCP, time servers, LDAP server and online LDAP Account Manager, Openfire XMPP / Jabber server, VPN servers, web servers, MySQL database server, network backup server, osTicket ticketing system, internal Wiki server, server room climate monitor.

05/09 – 08/15 Linux System Administrator at Globalworks Group LLC – New York, NY

Maintained corporate IT infrastructure of a mid-size advertising agency, performed daily system administration for mixed Linux, Mac OS and Windows environment. Performed MySQL database administration for development and production environments including replication, backup and restore, dump / reload, archiving, user administration. Migrated several mid-size MySQL databases to MariaDB. Maintained Ubuntu Linux servers in Amazon AWS environment.

Maintained and monitored Linux production environment providing 24x7 on-call operation support. Secured and hardened the production environment. Maintained monitoring and backup of production systems.

Deployed and maintained Proxmox Virtual Environment. Migrated physical Linux and Windows servers to Proxmox VE. Migrated system and network services from Windows platform to Linux.

Supported corporate mail server (Zimbra Collaboration Suite). Upgraded ZCS V5 to version 6 and 7.

Redesigned corporate local area network, installed and set up new network switches, firewalls and VPN appliances. Built, installed and set up numerous physical and virtual Linux servers.

Installed and set up Nagios monitoring system, configured and managed new network backup system

Wrote a number of Perl and shell scripts. Documented existing IT infrastructure and projects in Twiki

EDUCATION

1986 B.S. in Electrical Engineering, Moscow Institute of Aircraft Technology, Moscow, Russia

REFERENCES: Available upon request

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