Steinkamp.us

RECRUITERS: I am not currently looking for a new job. Please do not email me. Thanks!

Zack Steinkamp

abqsu9@r.postjobfree.com

http://steinkamp.us/

San Jose, California

Skill Summary

Programming Languages:C, C++, Perl, PHP, Javascript, Ruby, PythonOperating Systems: FreeBSD, Linux, Mac OS XConcepts: Maximum Performance, Massive Scalability, Fault-Tolerance, Security, Authentication Mechanisms, Shipping SoftwareAlphabet Soup: HTML, AJAX, CSS, XML, HTTP, TCP/IP, XSS, CSRF, XUL, RoR, SHA, AES, DevOps, CI, git, HAML, SASS

Experience, Palo Alto, California

Sr. Software Engineer / Engineering Manager :: 9/2010 - currentDeveloped management system and network architecture in EC2 scaled to hundreds of users, thousands of nodes, and petabytes of storage.Identified and implemented significant front- and back-end performance improvements to the groupon.com site.Implemented a single-sign-on system used to protect over 200 internal sites with minimal hassle.Implemented a real-time metrics collection, transport, visualization and alerting system using a mix of open source technology and homegrown software.

Built special-purpose systems designed to withstand traffic generated by three Super Bowl ads.Rearchitected production operations infrastructure and tooling.Interim head of Production Security team. Responsible for education, evangelization, and development of security best practices.Implemented a grassroots security program to build a strong security culture within the engineering org.Heavily involved in transition from PaaS provider to a dedicated datacenter.Spoke at various internal and external conferences, presenting on the topics of performance, monitoring, security, and devops.Participated in most aspects of obtaining PCI Level 1 certification -- documentation, evidence gathering, working with auditors, security design, production roll-out.Transitioned into a management role overseeing infrastructure engineering (team of 12)., Mountain View, California

Sr. Principal Software Engineer, Symantec Health -- A cloud storage system for medical images and social sharing solution for doctors :: 3/2009 - 9/2010Involved in choosing datacenters, selecting hardware solutions, and installing hardware in datacenters.Designed and implemented virtual server solution using VMWare ESX, VirtualCenter, and CentOS.Implemented monitoring and product analytics solution.Co-architected and implemented a scalable (hundreds of TB) yet inexpensive storage infrastructure.Co-architected and implemented inter-datacenter file and database replication.Co-designed and implemented customer-facing analytics site.Assisted with design and implementation of frontend and social features.Assisted in conceptualizing iPhone and iPad apps.Implemented novel imaging technology in Flash to map 16 bit images to 8 bit computer displays in ways familiar to radiologists.Responsible for application security design and ongoing security testing.Active participant in design, sales, and marketing strategy., San Francisco, California

Co-Founder and CTO :: 3/2007 - 2/2009Assembled a high caliber team to build a web application to visualize data orgainzed by time.Assisted in building a flexible, high performance, scalable application platform. Dipity.com has 2 million monthly unique visitors and serves millions of pages per month.Orchestrated a move from colocated servers to Amazon EC2.Responsible for all aspects of building the product -- from brainstorming to requirements definition to delegation to architecture to execution.Technologically covered the gamut -- Machine setup, monitoring infrastructure, database administration, back-end architecture, security, Javascript/AJAX, product concepts, mockups, and graphics.Developed single-sign-on and content moderation systems to meet customer requirements.

Assisted in fundraising activities.Shipped personal timelines four years before Facebook did

Yahoo! Inc., Sunnyvale, California (1999-2006)

Core Security Team (Yahoo! Paranoids) :: 04/2005 - 12/2006Served as an internal security advisor -- specializing in, issues dealing with modern client-side web technologies (AJAX, Javascript, DHTML, Flash, Web Services).Developed several core libraries to assist developers in creating rich Internet applications in a secure manner.Involved in developing company security policy, working with executive, legal, business, and engineering teams.Developed and delivered coursework to train engineers and others in the company in security issues and best practices.Developed and delivered informational presentations to a wide variety of audiences.Monitoring Infrastructure Team :: 04/2003 - 04/2005Assisted in the design and deployment of a distributed, scalable performance monitoring and data collection system used throughout the company. This system, built using C, C++, Perl, and PHP components, collects millions of performance samples daily.Worked with many other engineering groups throughout the company to design data interfaces and configuration. Designed and built web-based visual data analysis tools for engineers, production staff, management, and executives.Designed and built an AJAX-based self-serve configuration tool for this system.Eventually took over management and technical lead responsibilities for the team that builds this system.My Yahoo! Development Team :: 03/1999 - 04/2003Lead Engineer and Manager for the engineering team that built the next-generation web portal product used by millions of AT&T, British Telecom, Verizon, and Rogers Cable broadband users. Worked closely with product managers and visual designers from brainstorming sessions through development and QA to weekly product maintenance meetings.Senior Engineer for My Yahoo! Recognized for interest and skill in designing and implementing front-end solutions, while maintaining expertise in C, C++, and Perl back-end systems.Conceived, documented, and implemented a presentation layer separated from the product's core code without a significant degredation in performance (PHP-under-C). Worked with the inventor of PHP to make this possible. Improved engineering efficiency dramatically.Conceived and implemented UI changes that doubled (measured by clicks) user awareness of customization in the My Yahoo! product.Built a C++/XML architecture to centralize security functions, user authentication, and other functions common to the My Yahoo! configuration interface. This architecture was adopted by several different groups in the company and handles nearly 1,000 unique URLs.

Education, San Luis Obispo, California

Bachelor of Science degree in Business Administration, with emphasis in

Information Systems / Computer Science.

Recipient of the 1998 Peoplesoft Information Systems Award -- Awarded to the Cal Poly MIS student who best demonstrates practical knowledge and interest in the Information Systems field.

Personal

High Performance Driving Instructor for the and former SCCA club racer.Electronic music maker, with 50 patches in the default sound set of the .Designed and built several pieces of furniture.First BASIC program written 1982 on a Commodore VIC-20.

Contact this candidate