Greg Retkowski Operations Team Lead, Network & Systems Architect, DevOps 408-455-3913 / greg@rage.net Executive Summary: Over ten years experience planning and executing Internet-centric networking and development projects in fast paced demanding startup environments. Proven track record of delivering ground-breaking technological projects within schedule and budget constraints while exceeding client expectations - both as in individual contributor and as a leader of teams. Adept at all aspects of network and server management, with a focus on operations automation projects. Satisfied clients include Internet startups such as OnLive, Avvenu, Mediaplex, SpeedEra, 8x8, & Chip Express. Strong problem solving, communications and leadership skills. Broad-based skills and expertise, diverse background. * Technical Skills: Hardware & Operating systems: Intel/Linux, Redhat Enterprise, Fedora, CentOS ia64 & multi-processor Intel/Microsoft, NT/2K XP/Vista Sun/Solaris, 2.5-9; Enterprise hardware Network Appliance, 740, ONTAP Cisco/IOS, Routers 7xxx, Catalyst's 65xx F5/Big-IP, Load Balancers 1500 Protocols: NFS, SMB, NIS/YP, NIS+, DNS (BIND), SIP, Radius, and LDAP Mail: Sendmail, spamassassin, procmail, SPF, SMTP, POP3, IMAP4, RBL Web: Apache, haproxy, passenger, mod_perl, java servlets, tomcat, PHP Web Applications: Wordpress, Wikis, RT, Facebook & Twitter API, OpenX Networks: 1Gb TP & Fiber, layer-3 & VLAN, WiFi/WEP/WPA, RIP, IGRP, OSPF. Security: Firewalls, iptables, NAT, SSH, SSL, VPN IPSEC & PPTP, Splunk Storage: Raid 0,1,5 +Journal, Snapshots. Legato, DLT/LTO, iSCSI, Bacula Network Management: sniffers, montoring (NAGIOS & mrtg'isms), SNMP, syslog-ng Automation: Kickstart, PXE, Yum/Yam, Cfengine, capistrano, rsync, sudo, Puppet Development: Perl, PHP, Ruby on Rails, Python, Java, HTML, CSS; cvs, sql, svn Cloud Computing/Web2.0: AWS S3/EC2, web-api's through REST & SOAP, OpenID Methodologies: Kanban, TDD, Continuous Integration/Deployment, DevOps, Agile Databases: MySQL, Oracle 7/8, PostgreSQL, Cassandra Message Broker / Queues: Rabbitmq, ActiveMQ Ruby: rails, jruby, passenger, gems, threading/concurrency * Experience 2010-Current OpsEng Team Lead, OnLive, Inc; Palo Alto, CA In charge of the five-member senior systems administration team at OnLive. The team is responsible for all server & network automation projects surrounding the launch of the OnLive game service. The team built out the service from less than 100 nodes to more than two orders of magnitude larger. Implemented a team work-flow using Kanban, which allows the team to simultaneously complete large projects, increase team productivity, and react to changing priorities. It made it possible for the team to deploy the large-scale production service while meeting an aggressive schedule. Introduced the operations software-quality initiative, which ensured systems-configuration code was thoroughly vetted via phased-release, continuous-integration, and unit-tests. Used VM's to CI & Unit test system configuration code. Defined and created the Release-to-Customer processes - deployed all production releases for a period of about six months. Performed all of these team-leading activities while also performing my responsibilities as a primary individual contributor. 2008-2010 Operations Engineer, OnLive Inc; Palo Alto, CA Key designer/implementer of the service software deployment mechanism. Currently manages over a half a terabyte of data spread across thousands of build-server produced RPM's. Designed and implemented a multicast software distribution system that enables software to be deployed across the network quickly with little server impact. Primary maintainer of our puppet automation system which automatically provisions and maintains our UNIX/Linux servers. Primary maintainer/contributor to the service configuration database written in Ruby on Rails. The software was responsible for maintaining & updating configurations of the hosts, monitoring, trending, logging, reporting, install-automation and needed to work in a mixed (Windows & Linux) environment. 2008-2009 Chief Technologist, ZortIt; Key West, FL ZortIt is an Amazon AWS 2008 'Startup Challenge' entry designed to save users time by automating tasks required for web research projects. Responsible for writing the application in Ruby on Rails. The application leveraged technologies including web API's (Rest & SOAP) from Yahoo Boss, MSN/Live, AWS S3 & Alexa services. The application integrated with OpenID, Twitter, & Facebook. Responsible for developing traffic, scaling, and financial models for business plan. Coordinated with outsourced technical talent. Filed provisional patents related to technology around the application. Deployed systems on EC2. Configured memcached, haproxy, passenger (mod_rails), enterprise-ruby, and mysql. 2004-2007 Senior Network Architect, Avvenu, Inc; Palo Alto, CA Was the senior-most member of the technical operations staff. Designed and deployed lights-off resilient network infrastructure for the roll-out of a remote access service. Created a self-healing ability in the network utilizing NAGIOS and cfengine. Automated all levels of management of the network, from host installation through application upgrade via cfengine and other tools. Evaluated network hardware, colocation facilities, operating systems, and management tools based on requirements of service and software. Wrote and deployed a Ruby on Rails application to manage shared music for subscribed users. Supported Avvenu's Facebook application by deploying development and production environments and working with development team. Deployed new corporate website which included re-coding CSS/HTML, deploying and customizing Wordpress, writing a database-backed management system for press releases. Set up openads (OpenX) to manage rotating content internal to the Avvenu application. 2002-2004 Project Implementer, Chip Express Corp; Santa Clara, CA Senior technical expert in UNIX and Networking systems. Deployed Linux- based LSF (grid computing) environment. Planned and deployed a UCE reduction plan including Real-time Blackhole Lists (RBL) and real-time antivirus scanning of inbound mail. Implemented automated unnatended installation system for Solaris and (Redhat) Linux. Deployed gigabit fiber backbone connecting three server/telco rooms. Wrote performance metric & sizing system for HPUX & Solaris systems to determine when utilization exceeds available network resources. 2002-Current Technical Advisor, WheresCherie.COM; Fountain Valley, CA Responsible for all operations and engineering for the site. Re-wrote portions of the underlying content engine to fix bugs and extend functionality.The site was featured on 'Yahoo! Picks' (Yahoo!'s site of the day). 2004-2005 Infrastructure Consultant, Integrated Devices; San Diego, CA Secured site's WiFi network. Deployed source control system for engineering. 2004 Infrastructure Consultant, TruSonic Inc; San Diego, CA Engineered network architecture for spin-off of TruSonic from MP3.Com. 2000-2001 IT Manager, Netergy Networks (8x8); Santa Clara, CA Planned, managed, and deployed corporate-wide unified directory services. The directory services project unified authentication across applications and operating system platforms. Implemented the SecurID system for VPN users. Put in place a trouble-ticketing and network monitoring & notification systems for the IT department. Managed changeover from daisy-chained switch architecture to Layer-3 / VLAN switching using Catalyst 6500 series switches. Managed small team responsible for IT services. 2000 IT Manager, SpeedEra Networks (now Akamai); Santa Clara, CA Automated management of ~30 Linux workstations. Established policies and procedures for user interface to IT department. Centralized and simplified network administration by implementing an unattended install system, and user support tracking database. The unattended install system was adopted by Operations and allowed the deployment of all servers required for the launch of the product. Developed web-based cached content management utilities - allowed end-users to purge content, deploy caches, manage access, and configure domains. 1999 Move Coordinator, Bamboo.Com (now IPIX); Palo Alto, CA Planned and executed a network build-out in new facilities for the expanding engineering team, including evaluation of power, telco and environmental capacities. Specified and ordered all required systems and hardware. Established required underlying network infrastructure including authentication and name services, firewall filter and translation rules, and remote management capabilities. 1999 Network Architect, MediaPlex (now ValueClick); Cupertino, CA Managed a pair large-scale webfarms comprised of Linux and Solaris, averaging over 25 million hits a day. Tuned webserver and operating system for optimum performance under load. Designed and managed network integration using tools such as nisplus, rsync, and ssh. Created and implemented key policies in the areas of security and disaster recovery. Played a key role in the success of the pre-IPO audit. 1998-1999 Senior SysAdmin, SaveSmart Inc; Mountain View, CA Responsible for WAN links, LAN infrastructure, and majority of UNIX system administration tasks. Provided underlying Operating Environment support for 2 major releases and a facilities move. Grew network from 6 servers to over 50 servers. 1997 Operations Manager, PocketScience Inc; Santa Clara, CA Managed a 50 node administrative and development network including Solaris/x86, Windows 95, and Windows NT systems. Designed and implemented network infrastructure for first beta release. 1995-1997 Network Administrator, Safari Internet; Ft Lauderdale, FL First employee - grew network from inception to a 1500 user mixed (consumer & business) Internet Service Provider. Responsible for all aspects of network administration in addition to Internet related programming and consulting for company customers. 1991-1995 LWV (Humvee) Mechanic. US Army; Schofield Bks, HI Part of a team responsible for the smooth operation of wheeled assets for a combat engineer battalion. Grew proficient at basic working skills including responsibility, leadership, self-reliance, and initiative. While deployed to Haiti was tasked with troubleshooting, maintaining, and training personell on the use of the unit's laptop computers. Personal Achievements: Co-designed, Tested, and Implemented a homebuilt wireless router with a 1 megabit capacity at 13+ miles in 1998. Prior art to patent #7035281 Responsible in whole or part in several Open Source software initiatives; ported LDAP nameservices to Linux, wrote an authentication hash library for TCL/TK, wrote several HOWTO's including Wireless-Router and LDAP-authentication, and worked on several web based projects including a search-engine submittal tool and a re-work of the Gnats system web frontend. Contributed to the 'Edge' community engine. Deployed a 8 node 2 segment 100-base-T enterprise class network to provide remote management and monitoring facilities for the house lava lamps. (1998) Published an article with Oreilly, titled "Self Healing Networks with NAGIOS & Cfengine". Presented to 'Large Scale Production Engineering' group on operational lessons learned building large scale production services Eagle Scout, Army Veteran Code samples available on request ### Do not re-distribute this resume without obtaining my consent. Email (don't call) when establishing initial contact with me. 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