Chuck Sheldon Email & Phone Number

Sunnyvale, Ca

2 years: 60% grid data ops, 40% grid ops: oncall, onboarding, deployments for large, “bare metal” multi-tenant Hadoop clusters with many proxies and services: Hue, Hive, Hcat, Hbase, Storm, Oozie, Zookeeper, for internal customer base of thousands.Set up several Hue clusters and supported all Hue clusters for about a year. Hue setup components:- Validate hosts, VIPs, Cnames, SAML, provision via Chef; coordinate with Hue database servers.Spearheaded several projects such as BCP, single point of failure, deployment processes. Examples:- Rack tool identified redundancy SPOFs, such as both ANN and SBN confined to a single rack.- Optimize network usage with script to find dataset configs to find polling frequency outliers.

Sunnyvale, Ca

3 years grid data ops: oncall, onboarding for acquisition, replication, retention of ~50 PB of data on ~15 Hadoop clusters. Led dataset optimization projects: polling frequency, bandwidth. Sample tools:- mdfs tool exposed cloud data flow issues for 5+ yrs: highly integrated, extensible Perl/HDFS tool reports: - latency, date gaps, usage (counts, sizes), quota (size, namespace) on multiple clusters.- FURY leveraged Starling (digest of Hadoop logs) in Hive to find who used which data when, with access via HTML reports and MySQL queries; find users of obsolete feeds; highly optimized: got 50X Hive HQL speedup via partitioning and special Hive query; very fast SQL queries, Perl.- Supervisor said, “SERIOUSLY GREAT WORK HERE !!!! … big kudos from [dir] and [VP] …”- Yahoo CEO Mayer acknowledged $1.3M initial space savings at company FYI meeting.- The tool enabled two major all-Yahoo grid data migrations with zero production impact.- One manager said, "This allows Yahoo to accelerate on Product initiatives without incurring additional CapEx/OpEx and delays due to hardware procurement." - Example: supervisor said certain off-grid customers “believed [FURY] metrics [but not our top grid expert] that the TT cluster can solve their problem instead of building a new cluster.”

Sunnyvale, Ca

2 years grid apps: oncall, onboard, deploy, docs, tools for 10 Hadoop advertising apps. Sample tools:- Web-driven HTML/Perl app to drive standardized deployments with automatic deployment tracking.- HDFS quota filter, dfsq, about which coworkers said, "friggin sweet", "Awesome work!", "Improvement is an understatement; you've made it the way it should have been all along", "really nice to have."

Santa Clara, Ca

3 years Ad Ops: Created or optimized tools and databases to help manage 30,000 front end ad servers.- Team databases: added uniform security and moved databases to dedicated database server.- Tool server sysadmin: Moved corp-based team apps to new servers, debugged and enhanced tools.- Enabled automation of software configurations for ten types of ad servers by designing and implementing a Perl tool, "EASI" used on the source side by 3 teams: dev, QA, ops.

Sunnyvale, Ca

Drove Yahoo transition to more precise client side counting of page views by creating the Perl back end.

Silicon Valley

PAST PROFESSIONAL EXPERIENCE: 9 years Build, Release, Test Automation2 years ADAC LABS: Automated 2 FTE of SCM, configuration management, releases.1 year GOULD IGD: Automated builds using C and shell scripts for 4 product teams.1 year INTERNATIONAL IMAGING SYSTEMS: Wrote makefiles with several options for a hundred build types on Unix.6 mos POWER DESIGN TOOLS: Develop make-driven test automation suite in Perl on Unix, Windows.1 year DATRON/TRANSCO: Do builds and testing of 1 million line software product on 2 Unixes.18 mos HEWLETT PACKARD: Make, makefile conversion, test automation on Linux and Unix.18 mos SALIENT POINT: Integrated web app from 3 teams (one in Russia), Visual C++, Windows6 mos HEWLETT PACKARD: Automated test and integration with both CLI and Web interfaces.1 year CISCO SYSTEMS: Retrofit verification to existing SCM system; black and white box testing (Perl)4 mos SKYSTREAM: Created OO Perl test harness and Perl test suite on Linux(this section summarizes build-related pre-Yahoo work history, much of it contracting)

Silicon Valley

2 years Adac Labs: digital images in raw RGB format, image processing apps.5 years Gould IGD: digital images in raw RGB format, project lead for image processing API.4 years Intl. Imaging: digital images in raw RGB format, project lead for TS/SCI imaging apps.6 mos Power Design Tools: electronic device files.18 mos Salient Point: categorize unstructured text with Verity Profiler API; created custom API.2 years Taxonomize: categorize unstructured text with Verity Profiler API, created web apps.(this section summarizes data-related pre-Yahoo work history, the last 2 startups. I was a partner in the last.)

Certificate, Bioinformatics

Earned a Bioinformatics Certificate.

Bachelor’S Degree, Biology, General

Master’S Degree, Biology, General

pre-med