SUMMARY:

• Extensive experience in UNIX Systems Administration, DevOps and application support including trading - specific technology support and project management.
• Publications: Web Site: petervtamas.com/tech; eBooks (on Amazon): Up To Speed with Linux Networking (2017) including modern networking concepts (SDN, NFV, Linux policy routing); UNIX for Applications Support Staff (Linux, Solaris, AIX and MacOSX; 2013, 2016); copies available upon request.
• Solaris, Linux, some AIX, Windows. Wrote monitoring tool in Perl. BASH scripting: startup scripts (prepare data for importing, status reporting, daily start-up and shut down)
• Research and creation of Standard Operating Procedures and configuration management for new software.
• Built a Hadoop environment, working with developers.
• Disaster recovery sites, data center moves, server updates. Proactive analyses lead to improvement in reliability and $1MM/annum savings.
• Worked closely with business units: trading desks, developers, change control management and back office staff.
• Operating, design & support of mission-critical applications used for Options, Currency, Fixed Income, Precious Metals, Equity trading, Back Office processing; market data ;

EXPERIENCE:

Confidential, New York

Responsibilities:

• Created Python script used to compare Linux servers before and after maintenance using Confidential to store and compare data collected on servers with data output in html and urgent issues sent via mail.

Confidential

Responsibilities:

• Wrote technical articles on web site petervtamas.com: Modern networking concepts (SDN, NFV, policy routing); configuring DNS servers; diagnosing capacity issues; managing Linux kernel settings; Scrum; YUM; LVM; how to configure multiple VLANS to work on one network port; OSI and TCP/IP models; TCP; using modules in Python (with Black-Scholes option pricing as an example).
• Wrote eBook Up To Speed With Linux Networking .
• Completed second edition of earlier eBook UNIX for Application Support Staff .
• Updated earlier eBook on sports history Seabiscuit and War Admiral at Confidential .

Confidential, NJ

Systems administrator

Responsibilities:

• Linux server configuration, configuring Solarflare network interface cards for low-latency applications.
• Installing servers, SAN, routers and switches, Coordinating cabling and other vendors; Maintain database of equipment and associated connections; Decommissions; Break-fix
• Subject matter export for teams preparing for next Sarbanes-Oxley audit.
• Project management: working with technology managers to prepare audit-related action plans.

Confidential

UNIX Systems Administrator, San Bruno, CA

Responsibilities:

• Developed, scripted, documented and Confidential (Standard Operating Procedure) for new software
• Worked with stakeholders to build consensus for Confidential
• Provisioning, installation/configuration, operation, and maintenance of systems hardware. Troubleshooting RHEL, Centos and Solaris servers, monitoring with Zabbix and MON, deploying software, OS and application updates. Supported cloud services from vendor side including external and internal facing server support, F5 certificate-based logins.
• Provisioning of new VMs on OVM and VMWare
• Fulfilled urgent requests while maintaining SLAs for routine requests, working with overseas teammates when local teammates were unavailable for approving configuration changes.
• Developed procedure to use DHCP for assigning IP addresses on new servers’ management modules; this allowed data center staff to prepare new servers ahead of time and reduced need for on-site data center presence.
• Initiated, scheduled and fulfilled Windows 2003 to 2008 upgrades.

Confidential

Systems Administrator, Newark, NJ

Responsibilities:

• Provisioning, installation/configuration, operation, and maintenance of systems hardware and software in Telecom environment.
• Linux policy routing. Amazon Web Service, IBM Blade technologies, Centos, Red Hat Linux, LDAP.

Confidential

UNIX and Market Data Systems Administration

Responsibilities:

• Provisioning, installation/configuration, operation, and maintenance of systems hardware.
• Responded to OS level incidents and requests for a heterogenous collection of servers merged together from multiple business units and built by many UNIX teams.
• This environment was made up of over 10,000 UNIX servers in multiple locations from multiple vendors, multiple versions of Solaris, Linux, AIX
• Worked with unresponsive business users to schedule unpopular scheduled maintenance such as patching, annual reboots and hardware issues that were identified before impacting uptime and performance.
• Provisioning of new VMs on VMWare Platform
• Saved $1MM+/annum in data center costs.
• Built strong relationship with staff across different teams, including offshore Level 2 UNIX SAs and vendors, to facilitate efficient progress.
• Perl and shell scripting
• Troubleshooting: Linux clusters, AIX, Oracle ASM, Oracle ZFS, Linux VMs, Solaris Zones.
• Installation of tools and UNIX utilities; Standardization of system configuration files.
• Level 2 UNIX SA team and vendor field engineers to resolve hardware issues.
• Access administration on AIX, Solaris and Linux via NIS, LDAP, Active directory and local configuration files.
• Driving security remediation. Performing systems audits and driving resolution of identified issues. In 2013, convinced clients to schedule firmware updates, quarterly/annual reboots and similar proactive measures for 400+ servers.
• Worked with teams across multiple disciplines including offshore Level 2 UNIX team, networking, database administration, vendors, application development and support teams.
• Permanently resolve issues using 6 Sigma methodology and ITIL practices (Service-level Management/SLAs, Availability Management, Capacity management, Service Transition, Change Control/Management, Knowledge Management, planning the rollout of software, Event Management, Incident Management and Root Cause Analysis)
• Significantly higher numbers (tickets, work requests, et cetera). After team consolidation in 2012, brought ticket queue from 900+ to <100 tickets.
• Trained staff on trading environment.
• In addition to normal duties, found and completed projects that “slipped through the cracks.” Decommissioned 1000+ unused network drops provided by vendor EDS, saving over $1MM/annum. Worked with server owners and appropriate teams to drive completion of server retirement process (unused servers not associated with any cost center, retired servers that were not removed, servers were retirement request failed and servers unused but supported). 2013: retired 25 servers, including the last 3 in a cage at co-location site, saving $48,000/annum on cross-connect charges alone. In a large corporation, support issues and cost savings opportunities exist, especially when workloads are high, because of a “not my job” approach; the only solution is for someone to put in extra hours to clear up the roadblocks without ignoring assigned duties. My relationship with staff across different teams allowed me to efficiently make significant progress on these problems. My after-hours projects saved more than my salary each year of my tenure.
• Led team in number of tickets completed (most years).

Confidential

Data Systems Administrator

Responsibilities:

• Worked with trading staff to request Linux and Solaris servers of the appropriate capacity.
• Installed, configured and supported market data applications.
• Installed and configured market data routing to allow us to retire 5 market data feeds: annual savings of $300,000.
• Manage good vendor relationship for effective and on time deliverables
• Managed market data team’s NIS and NFS servers.
• Supported program trading desk. This desk arbitraged Equity Futures between Chicago CME and underlying stocks traded on NYSE. Worked with UNIX, networking and project management teams to roll out new infrastructure; secured data center space
• Participated in data center decommission (emergency due to environmental factors)

Confidential

UNIX Systems Administrator, San Francisco

Responsibilities:

• Supported development teams and new projects.
• Wrote procedure documents used by production SAs, including process documents for Confidential upgrades.
• Update design documentation for lab environment.
• Built out DR site in Phoenix, Arizona; Evaluation and installation of new Solaris patch releases and tools such as compilers, Apache.
• Performance troubleshooting and recommendations.

Confidential

Trading Floor Support Specialist

Responsibilities:

• Primary support for IPO and sales desks including market data sheets, network patching, building new desktops, installing Bloomberg.