TECHNICAL SKILLS:

Computer Environment: UNIX, HP - UX 11.11,11.23, 11.31, Redhat Linux AS, RHEL3, RHEL4, RHEL5, RHEL6, RHEL7, SUSE Linux Enterprise Server 9,10, 11, Gentoo Linux, Fedora Linux, CentOS 5, CentOS 6, CentOS 7, Sun Solaris 8,9,10, IBM AIX, LVM, Kernel Tuning, TCP/IP, LAN/WAN, VPN, IEEE 802.1Q(VLAN Tagging), Frame Relay, Multicast, Routers, SAN Storage technology, Cisco Catalyst Switches, Cisco MDS 9509 and 9513, Brocade, Wireless Networking, SMTP, SNMP, SAM, SMITTY, NFS, NTP, DNS, SSH, SFTP, SCP, HTTP, HTTPS, FTP, TFTP, CVS, Iptables, Squid Proxy, HP Integrity Itanium Server, HP 9000/Sun Sparc/Intel x86 hardware 32/64 bit, Dell PowerEdge and HP Proliant Servers, HP P-Class and C-Class Blade Servers, IBM Blade Center, IBM P-Series Servers, Egenera BladeFrames, EMC Clariion CX3,CX4 Storage Arrays, 3PAR Storage, IBM HMC, IBM DS8700 Storage Arrays, SVC(IBM San Volume Controller), IBM XIV, DAT/SLR Tape Storage, HP LTO Autoloaders and Libraries, IBM Tivoli Total Storage Productivity Center (TPC), VERITAS NetBackup, VERITAS Volume Manager, VMware VSphere, VMware ESX, VMware Workstation, XEN, KVM, RAID (hardware/software), HP Mirror UX, Terminal Servers, Cyclades, Avocent, Apache, Tomcat, IIS 5.0/6.0, RPM, Kickstart, Ignite-UX, Webtrend, Awstats, Webalizer, Webmin, WebSphere, Nagios, BMC Patrol, BMC Service Reporting, BMC Remedy, Puppet, Nagios, Cacti, RRDTools, DRBD, CA Unicenter NSM, CA Service Desk, Remedy, Samba, Client/Server Architecture, VNC, Sendmail, High Availability, IBM GPFS(General Parallel File System), Open Source Clustering Technology, OpenMosix, Borne/Korn Shell scripting, HTML, UNIX Printing, Cups Printing, DB2 UDB v7/v8/v9, DB2 Connect, Oracle9-11, Postgresql, Mysql, C/C++, Mac OS, VMware Fusion, Hadoop, Elastic search, Ansible, Docker, RunDeck.

PROFESSIONAL EXPERIENCE:

Confidential(Chicago, IL)

Sr Systems/DevOps Engineer

Responsibilities:

• RHEL5-7 on VMware, Terraform, AWS EC2/S3, MS Azure Cloud, on PREM and bare metal.
• Hybrid Cloud.
• Write and test Ansible Playbooks as needed to perform ad hoc and scheduled Configuration Management tasks. Playbook versioning via GIT.
• First to use Ansible and Pysphere to deploy Linux Virtual machines in VMware for CI/CD pipeline project which allows self-service Virtual machine deployments.
• Member of project team that implemented Self Service Automated server provisioning system (Hybrid Cloud). Ticketing system to Rundeck, Ansible vSphere guest module, Pysphere, VMware.
• Create OS templates in VCenter/VMware that are golden Images to be deployed via Automated server provisioning system.
• First to run Docker containers on premise at Hyatt for POC with Architecture team.
• Created images, processes and procedures that took Hyatt from a single Development Docker container in AWS to 700+ containers running on premise in less than 2 years.
• Architected and implemented a Linux LDAP solution with Active Directory utilizing
• LDAP group level access. All Linux servers now authenticate via LDAP/AD which was part of a larger PCI project that allowed Hyatt to our PCI ROC.
• Provision Amazon EC2/S3 and MS Azure VMs as needed in our Cloud space.
• Deploy and refresh Server Infrastructure as required.
• Deploy Oracle RAC Cluster/Nodes for Data Base team.
• Deployed both Hyatt bare metal Non-Production and Production Hadoop Clusters.
• Deployed robust bare metal Non-Production and Production Kafka environment for Hyatt Architecture and Platform Engineering teams.
• Troubleshoot and resolve performance issues.
• Work closely with Hyatt Cyber Security team to help identify and remediate potential security vulnerabilities on Premise and in private Cloud.
• OS Patching as required.
• Work assigned Tickets and create appropriate documentation for change management.

Confidential(Chicago, IL)

Systems Engineer

Responsibilities:

• Linux Centos5, Centos6, Centos7 on VMware.
• Configuration Management via Puppet.
• Deploy and refresh Server Infrastructure as required.
• Deploy and Configure Hadoop and Elasticsearch Cluster.
• New XMPP Cluster deployments.
• Troubleshoot and resolve performance issues.
• Work assigned Tickets and create appropriate Changes to present to Change

Confidential (Tampa, FL)

Sr. Linux Systems Engineer

Responsibilities:

• Responsible for RedHat Linux RHEL5, RHEL6, RHEL7 on VMware and Zlinux in an 800 Server Enterprise environment.
• Configuration Management with Puppet.
• Work assigned Tickets and create appropriate Changes to present to Change Management.
• Troubleshoot and provide root cause analysis across Multi-Tiered Application and Architecture
• Participate in on call rotation to support production and dev business requirements.
• Cyberark Security appliance Administration

Confidential (Hoffman Estates, IL)

Lead Linux Systems Engineer

Responsibilities:

• Support Confidential XEN and KVM Cloud Environment containing Production, Development and QA virtual hosts in a Linux Multi Distribution, Multi Database and Multi-tier Application environment with 6000 + Virtual Machines and 2000 + Virtual Desktops.
• Support Linux on both VMware and Physical server hosted environment.
• Perform SOX Controls and audits as needed to satisfy compliance requirements for internal and external auditors.
• Implemented and maintain Cacti RRDtool Graphing server in the Sears Cloud to track capacity and trending of both hosts and guest servers.
• Responsible for large-scale Puppet implementation and maintenance. Puppet manifests creation, testing and implementation. Implement configuration management across the Linux Enterprise.
• Create and maintain all RedHat Linux and Centos Linux install builds/images, which are deployed in the Sears private XEN and KVM Cloud.
• Responsible for x86 and Sun Sparc hardware and vendor management.
• Mentor new team members.
• Troubleshoot and provide root cause analysis across Multi-tiered Application and Architecture.
• Work with on site, remote and offshore Applications and Data Base Administrator teams for problem resolution and RCA.
• Perform Kernel tuning and performance tuning to provide highly available Production, Quality Assurance and Development environments.
• Responsible for OS patching, service pack updates on Enterprise RedHat, Centos and Suse Linux for PCI and SOX compliance.
• Responsible for User and group management in an LDAP Infrastructure.
• Participate in team 24x7 on-call rotation.
• Sears CIO winner.

Confidential (Naperville, IL)

Principal Linux Engineer

Responsibilities:

• Engineer and support RedHat Linux In a VMware environment.
• Deployed XEN virtualization client-side monitoring solution.
• Performed User and group management in an LDAP Infrastructure.
• Participate in team 24x7 on-call rotation.
• Server vulnerability patching.
• Design and build RedHat Linux servers for Oracle Databases.
• Storage Engineering and Provisioning to Linux environment
• Managed backup and recovery solution using Legato.

Confidential (Bensenville, IL)

Infrastructure Engineer

Responsibilities:

• Storage Administrator, responsible for managing U.S. Cellular® 1.6 Petabyte SAN environment - across three enterprise data centers.
• Storage and capacity planning for U.S. Cellular® storage infrastructure.
• Coordinate upgrades and patching for storage infrastructure, including EMC Clariion and IBM DS8300 storage.
• Manage several TPC (Tivoli Storage Productivity Center Servers) used for capacity planning and trending for storage arrays and host. Also responsible for TPC Data
• Perform TPC upgrades and DB2 migrations.
• Install fiber cable runs, perform switch configurations to provision SAN disk to Unix, Linux and Windows servers (physical and virtual).
• Configure SAN disk using native LVM or VERITAS Volume manager on Unix and Linux host.
• Deploy and administer both physical and VMware virtual Linux systems and instances.
• Handle off hours notification and alerts for infrastructure monitoring of both SAN Storage and Unix and Linux Servers.
• Initiated and implemented RedHat Linux Kickstart server to allow unattended server installs.
• Perform kernel tuning as required.
• Responsible for OS patching, service pack updates on Enterprise RedHat Linux, Suse Linux, AIX and HPUX UNIX servers.
• Troubleshooting application and server performance problems in US Cellular Development and Production server and Storage environments.
• Perform weekly duties required to meet SOX compliance standards.
• Manage and configure array tools such as Navisphere, Unisphere, Naviseccli. Provision disk as well with these tools.
• Responsible for the Glasshouse Portal used for storage capacity planning and reporting.
• Manage project implementations and deliverables of up to 1.5 million dollars in hardware and software cost.
• Implementation and configuration of multi node SVC clusters (IBM San Volume Controller) in three data centers.
• Provision server storage from SVC. Thin and Space efficient LUNS.

Confidential (West Chicago/Champaign, IL)

Senior Systems Administrator/Engineer

Responsibilities:

• Plan and configure Network connectivity needs for server environments as well as implement security and compliance policy.
• Tested and performed R & D on vendor equipment as required.
• Provisioning, deployment and administration of both physical and VMware virtual Linux systems.
• Implemented and administered Open Source monitoring solutions such as Nagios, MRTG, ntop and Cacti.
• Handled off hours notification and alerts for infrastructure monitoring.
• Worked with applications programmers and engineers to troubleshoot performance-related issues.
• Recompiled custom Linux Kernels, perform Kernel tuning and maintenance as required.
• Researched, managed and carried out system maintenance and upgrades.
• Performed system patch and software analysis, installs and configuration.
• Responsibilities for user and group administration as well as LDAP and Active Directory duties.

Confidential (Chicago, IL)

Open Systems Engineer

Responsibilities:

• Responsible for Confidential UNIX and Linux Server Environments.
• Manage and perform change control and administration on application servers, web servers, LDAP servers and database servers in company’s mission critical production, staging and development environments.
• Coordinate with building Engineering staff data center electrical and cooling requirements needed for Infrastructure growth.
• Work with Network Engineering to plan and configure Network connectivity needs for server environments.
• Manage and administer Open Systems SAN Environment holding 700 terabytes of mission critical data on 3Par Storage arrays.
• Coordinate vendor upgrades and installs for enterprise SAN and server hardware.
• Responsible for Fiber cabling and zoning to add hosts to SAN Fabric and provisioning of LUNS to satisfy server file system and disk requirements.
• Responsible for deployment and configuration of multi-blade server frames containing diskless compute nodes, which boot from SAN.
• Sarbanes Oxley, ITIL, PCI
• Researched, managed and carried out system maintenance, hardware replacements and upgrades. Performed system patch and software analysis, installs and configuration.
• Create Linux Golden Image builds that are used to deploy diskless Linux blade servers throughout high performance computing environment.
• Perform Linux and UNIX Kernel tuning for web, database and application servers.
• Configure SAN storage and file systems across compute nodes in IBM GPFS (General Parallel File System) Clustered File Systems.
• Work with Information Security Department to harden OS and secure new vulnerabilities in applications and vendor software.
• Work with business units through out the Enterprise to develop plans to Engineer, deploy and support environments for new business needs.

Confidential (Chicago, IL)

UNIX/Linux Systems Administrator

Responsibilities:

• Responsible for Confidential ’s Sun UNIX and Redhat/Suse Linux trading application servers and development server environments.
• Maintained Environment of mission critical Servers running both vendor and proprietary trading applications.
• Maintained and engineered data feed servers that provide financial data needed for market trading.
• Researched, tested and implemented new technologies needed for company infrastructure.
• Responsible for issues of Security/Compliance/Auditing.
• Implemented and maintained company network firewall, intrusion detection system and internet proxy servers.
• Responsible for implementation, maintaining and monitoring web usage/filtering and chat traffic sniffing servers.
• Maintained multiple internal web sites and portals used for code repositories, documentation, network traffic monitoring and server resource usage, etc.
• Responsible for corporate domain name services, email, web mail, messaging.
• Researched, managed and carried out system maintenance, hardware replacements and upgrades. Performed system patch and software analysis, installs and configuration.
• Managed user accounts and groups for corporate UNIX and Linux users.
• Managed and support corporate UNIX and Linux Development servers.
• Responsible for OS installs, system configuration and upgrades.
• Off hours support for Sun Solaris and Linux Systems, infrastructure servers.
• Managed Corporate and Apache Web servers.
• Responsible for capacity planning, system back-ups and disaster recovery.
• Handled service relationships with Confidential - Confidential, Dell and other vendors.
• Developed, tested and documented operations procedures including; installation, maintenance; restart and recovery.
• Performed ongoing revision and testing of established procedures.
• Certified new servers, hardware and software for Confidential ’s Sun UNIX and Suse/Redhat Linux Systems.
• Worked with QA staff to ensure that test plans are complete and results are accurate.
• 24x7 last level support problem escalation.
• Developed Business Continuity Plans and Procedures
• Created new system/server builds and disaster recovery processes for servers.

Confidential (Oakbrook, IL)

UNIX/Linux Systems Administrator

Responsibilities:

• Maintained Ace Hardware Corporations Unix and Linux Development Environments.
• Conducted research & development, upgrades and new technology implementationsin Point of Sale application used by Ace Hardware retailers.
• Configured VPN tunnels to provide connectivity to store systems.
• Created Ignite and Kickstart System installs for HP-UX and Linux servers.
• Supported team of applications programmers that functioned in both UNIX and Linux environments.
• Created user interfaces for applications programmers. Network security audits of Corporate and Store UNIX and Linux networks.
• Responsible for 1300+ UNIX and Linux systems.
• Evaluated and selected equipment to be used for store migration to Linux-based system. Configured, tested and scripted all new peripherals to work with store POS application.
• Oversaw Linux project to migrate in-store POS Application servers from HP-UX to Linux. Designed single store LAN and multi-store chain WAN through DSL/frame relay architecture.
• Developed system updates, which are downloaded to keep system patched and code updated.