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Ziemowit Christopher Pierzycki

Objective: To obtain a position that would utilize my wealth of experience while simultaneously achieving the highest level of employer satisfaction.

EXPERIENCE

Abbott Laboratories
Consultant/Systems Architect (August 2007 - January 2010)

• Part of UNIX Solutions group; providing expertise in Linux and responsible for designing solutions for internal customers.
• Designed HP/UX, Sun Solaris, and Linux servers for internal Abbott customers per discussed requirements.
• Managed older UNIX High Performance Computing (HPC) clusters utilizing Platform Computing LSF software for scheduling and management.
• Deployed and managed new HP XC family Linux high performance computing (HPC) clusters used by scientists for research.
• Designed and deployed Linux virtual server solutions running on VMware vSphere clusters for datacenter consolidation.
• Designed and deployed Oracle Database and Oracle Real Application Cluster (RAC) solutions using HP/UX and Redhat platforms.
• Created necessary infrastructure for maintaining Linux servers in local and remote locations. Created custom utilities for day-to-day operation and management of Linux servers.
• Abided by strict change control documentation and work flow to comply with SAX and FDA mandated requirements.

Electronic Data Systems
Consultant (May 2007 - August 2007)

• Part of United Airlines Operation Command Center (OCC) support team. Provided help to general operations of the OCC staff supporting all plane-related operations.
• Developed management utilities in BASH, KSH, and Perl to help with daily operation of the data center.
• Operated two NIS/NFS/automounter environments with no single point of failure to manage large user base and decrease possible downtime.
• Developed and managed HP Ignite and Kickstart depot for quick deployment of workstations and servers across LAN and WAN.
• Documented OCC systems and applications used by the United Airlines staff for running full airline operations.

GE Information Technology Solutions/Compucom Systems
Senior Consultant (June 2004 - March 2007)

• Part of Centricity PACS development team. Provided essential Linux technical knowledge to the development and management teams.
• Provided help to developers with problems related to Redhat Linux Advanced Server 2.1 and 4.2.
• Back-ported parts of Redhat Linux 7.3 Anaconda installer to Redhat Linux Advanced Server 2.1 to add features and fix installer bugs.
• Developed one-step Redhat Linux Advanced Server installation method to automate installation of Centricity PACS products through customization of Anaconda installer and creation of Kickstart scripts.
• Co-developed PACS configuration wizard UI to automate further deployment of PACS products at the customer site. Worked with on-site engineers to improve the configuration wizard.
• Developed utilities using BASH, KSH, and Perl for general operation management of the cluster and applications.
• Used VMware Player as a platform for product based on PACS to be used as trial software for sales and engineering groups. Used VMware Server and Xen as platforms for upcoming releases of PACS products.
• Worked with vendors such as HP, EMC, and Dell to bring Centricity PACS products to new hardware platforms for mass installation.
• Provided last level of support to on-site PACS installation teams in various parts of the world.

Network Blackbox Inc
Consultant/Systems Designer (November 2005 - April 2006)

• Developed custom embedded platform based on Linux source code to be used with upcoming Network Blackbox product. Provided developer support for Network Blackbox Linux OS platform.
• Used QEMU and VMware Player to create a development platform for remote development teams around the world.
• Acted as a general technology expert and mentor for developer and management teams.

Thomson Reuters
Consultant/Development Engineer (March 2003 - April 2004)

• Joint project between INTEL, Reuters, Redhat, and Hewlett Packard (http://www.redhat.com/about/presscenter/2002/press_hp.html).
• Led team on Linux security. Created global Linux security standards for internal use. Researched Redhat Advanced Server 2.1, 3.0, and SuSE Linux Enterprise 8.0 security for deployment with Reuters products.
• Developed Linux Security Configuration (LiSC) application in Perl and accompanying XML formatted security templates. Worked with development, quality, and support groups to ensure full compatibility between LiSC and Reuters products.
• Documented development process and created complete LiSC manual and Linux security specification.
• Provided help to Intel funded projects such as porting and performance testing of Reuters feed infrastructure.

Asyncnet Inc
Consultant (June 2002 - November 2002)

• Assembled custom enterprise-level servers running Linux and Solaris. Purchased equipment, configured, and installed custom software packages.
• Developed custom testing applications to test wire-to-wire latency and input/output (IO) performance.
• Designed and assembled low-latency servers for propriety trading firms. Researched low-latency computer hardware to improve performance.
• Provided Linux operating system low-latency optimization. This included kernel recompilation, kernel tuning, and application tuning.
• Abided by strict non-disclosure agreement to respect client privacy.

Teleformix LLC
Infrastructure Engineer (March 2001 - June 2002)

• Managed all server, workstation, and network operations within a company with more than 150 internal servers and 600 workstations. Provided 24/7 support for client sites and call centers.
• Administered J2EE application and SQL database clusters based on Sun and HP equipment. Utilized cluster management software and created custom shell and Perl scripts for various administration tasks.
• Developed, deployed, and managed client's company dynamic websites including sales portals, corporate and marketing sites.
• Migration and troubleshooting of Windows 2000 Server and Redhat Linux-based servers for domain-naming resolution, email, contacts, authentication, file sharing, and printing.
• Participated in assessment of client sites; documented technology assets and assisted in creation of project proposal for the client.
• Watched over automatic rollout of software upgrades and patches across the corporate and client networks. Developed upgrade procedures and scripts.
• Monitored network security using various Windows and UNIX based packet tracers/protocol analyzers and intrusion-detection software packages.
• Deployed firewalls, routers, switches, and domain controllers. Did advanced configuration of domain controllers, such as user authentication systems, and applied cryptography to network applications.
• Provided support for JAVA based Teleformix software; worked closely with Engineering and Operations groups to solve system and software problems. This included but was not limited to the debugging of shell, Java, HTML, and Perl programs as well as troubleshooting system configuration.
• Researched, tested, and deployed PKI infrastructure within the company. Deployed such technologies as SSH, VPNs, mod_ssl, and the integration of Certificate Authority into CCAI software.
• Involved in development of OpenCA (Certificate Authority) software. Responsibilities included but were not limited to the debugging and bug tracking of OpenCA software written in Perl and shell script.
• Led team on support and network security. Mentored lower-level administrators on day-to-day activities and provided technical help as necessary.

PEKAO Trading Co
Systems Administrator (August 1999 - March 2001)

• Administered and supported PEKAO money-transfer software for a 500+ user base across Chicago-land area.
• Administration and real-time monitoring of logs, file permissions, file system integrity, passwords, and user activities. Responsible for host security and uptime.
• Worked closely with programmers to rectify software and database-related problems. Debugged and modified C programs.
• Deployed patches on HP/UX-based HP enterprise database servers to verify Y2K compliance. Created a detailed database documenting all the upgrades and patches.
• Streamlined disaster-recovery procedures and processes to make sure that users would have uninterrupted uptime.
• Traveled to client sites to assist in upgrades and troubleshooting of PEKAO money-transfer software.
• Created scripts to automate database maintenance and secure transfers. Developed and utilized an encryption technique to improve the security of money-transfers.
• Worked multiple 80-hour weeks to complete projects before deadline to allow for problem resolution.
• Researched new technologies and solutions for improved security and problem prevention.

Geoplan Inc
Consultant (June 1997 - July 1998)

• Managed a small business network with five servers and nine workstations.
• Traveled to client sites to repair or upgrade computer equipment. This includes printers, desktop and laptop computers.
• Provided training on use of computer equipment and software to the customers and employees.

EDUCATION

William Rainey Harper College (August 1997 - December 1998)
Electronics / Engineering

William Rainey Harper College (August 1999 - June 2002)
Network Technology / E-Commerce Technology

SKILLS

Operating Systems: Microsoft Windows, Linux, FreeBSD, Sun Solaris, SCO UNIX, HP/UX, MAC OS X, and Novell Netware.

System architectures: x86, ARM, MIPS, SuperH, PowerPC, Itanlium, and SPARC.

Applications: Applications: Apache, Bind, Microsoft IIS, OpenCA, OpenSSL, OpenSSH, OpenLDAP, Samba, BigBrother, Intel Server Manager, Crystal reports, Wireshark, Etherape, Network Monitor, IP monitor, Nessus, RAS, VNC, Microsoft Share Point, Microsoft Office, Sun JRE, Sun J2EE, hostSentry, ActiveState ActivePerl, ActiveState Komodo, Bastille, OpenVPN, logSentry, Xen, VMware, portSentry, Checkpoint Firewall, Symantec Raptor Firewall, Symantec ProComm Plus, Symantec Enterprise Security Manager (ESM), Tripwire, Tomcat, Websphere, NIS/NIS+, NFS, Microsoft Exchange, Kismet, Sable/Sablime, IBM Clearcase, Kickstart, RPM, Intel C Compiler, Veritas Backup, Veritas Storage Foundation, Veritas Storage Foundation for Clusters, RMV VisualSAN, Hummingbird Connectivity, Vintela VAS, Windows Terminal Server, Postfix, Sendmail, ScaleMP vSMP, and Platform Computing LSF.

Databases: Microsoft SQL Server, mySQL, DB2, Sybase, Oracle Database Server, and PostgresSQL.

Clusters: Databases, High Performance Computing (HPC), and Grid.

Networking: Network sniffing, routing, traffic normalization, firewalling, virtualization, clustering, virtual private networking (VPN), switching, meshing, network address translation (NAT), and masquerading.

Protocols: PPP, SLIP, 802.11, NetBEUI, IPX/SPX, TCP, UDP, and ATM, POP, IMAP, NNTP, SMTP, DNS, SSH, WINS, DHCP, HTTP, FTP, TFTP, BOOTP, IRC, and XDMCP.

Programming: BASH, KSH, Perl, PHP, TCL, Python, Expect, HTML, CSS, XML, ASPECT, SQL, and a basic knowledge of C/C++, Java and JavaScript.

Management: Proposal writing, purchasing, maintaining vendor relations, project specification writing, networking and building of new client relations, researching of new business opportunities, negotiating pricing structures for products and services with competing vendors.

References available upon request