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Gabriel (Gabe) S. Conradi

Summary

Linux engineer, systems architect, front and backend web developer, with an eye towards scalable design, containers, future technologies, interesting problems, clean solutions, and service oriented architecture.

Buzzwords

Languages: Bash/Zsh, Ruby, Golang, Scala, Javascript/Node, HTML/CSS, PHP, C#, Perl, C/C++, SQL, Java, Python

OSes: Linux (RHEL derivatives, Debian/Ubuntu, SuSE), Solaris, BSD

Tools: Puppet, D3.js, RPM+tito+mock, Jenkins, Drone.io, Docker, Collins, Genesis, mrepo, Kibana, Logstash, Fluentd, GitHub, Collectd, OSPF, jQuery, CFEngine2/3, Git, Ruby on Rails, Gerrit, Backbone.js, Resque, MVC3, Perforce, LXC/Xen/KVM/VMWare, ORMs, Kickstart, PXE, TFTP Boot, Phabricator

Storage: HDFS, GPFS, NFS, LVM, Multipath, NetApp, Isilon, ZFS, Lustre

Applications: Nginx, Apache, Autofs, MySQL, Redis, MSSQL, NcFTP, NetBackup, Nagios, Icinga 1+2, Redis, memcached, HAProxy, Varnish, ElasticSearch, ZooKeeper, OpenTSDB, Mesos, Marathon, Aurora, Kubernetes, OpenStack, Prometheus, AlertManager

Networking: Infiniband, 10/40GE, Juniper Switches, Cisco Switches Routers and VOIP, F5/A10 Load Balancers, MERU Wireless

Noteworthy Personal Projects

  • fadecandy-orb-lamp - Fully addressable RPi and Fadecandy LED lamp
  • goji - Evented service discovery for apps in Marathon to generate DNS zones, HAProxy configs, etc (Golang)
  • merlin - confd inspired etcd backed config emitter (Ruby)
  • moroccron - mesos + cron = moroccron. Mesos framework for scheduled tasks, similar to Chronos (Golang)
  • tumblr-geodash - Radiator dashboard for visualizing Tumblr posts in realtime from firehose (Golang, JS)
  • collins-cli - CLI for interfacing with collins API (Ruby)
  • site - Site driving pipefail.com (Node)

Notable Upstream Contributions

  • collins - Tumblr's infrastructure automation and asset management database (Scala)
  • genesis - Tumblr's infrastructure provisioning and automation framework (Ruby)

Work Experience

Freelance Consulting - Everywhere

Infrastructure and Distributed Systems Consultant - March 2017 to present

Tumblr - New York, NY

Senior Principal Engineer - July 2017 to present

Uber ATC - New York, NY

Staff Engineer, SRE - January 2016 to March 2017

  • Worked on mapping, autonomy, and safety
  • Provided technical leadership in the SRE domain
  • Designed and implemented next generation containerized HPC deployments for R&D
  • Built fully automated provisioning and lifecycle management system for high scale datacenters
  • Worked to coalesce around common infrastructure like Mesos, Marathon, Aurora, HDFS, Prometheus

Tumblr - New York, NY

SRE Staff Engineer - September 2014 to January 2016

  • Provided technical leadership in the SRE domain
  • Formalized developer contribution processes and guidelines to accomodate a rapidly growing number of repos and development team
  • Fostered culture of blameless breaking incident postmortems, encouraging repayment of tech debt
  • Drove architecture planning processes for new projects
  • Architected and spearheaded transition to containerized services in production
  • Created full container lifecycle automation in both bare metal and scheduled (i.e. Mesos) environments (logging, metrics, monitoring, deployment, config deployment)
  • Created a comprehensive log aggregation, alerting, and dashboarding infrastructure with Logstash, Kibana, ElasticSearch, and Icinga

Site Reliability Engineer - July 2013 to September 2014

  • Maintained and scaled infrastructure of top 20 site in US
  • Web scale HTTP operation and architecture (Load balancing, caching, CDNs, async job tier, DB sharding, etc)
  • Architected fully automated bare metal provisioning system
  • Improved fully automated service discovery mechanisms driving provisioning, load balancing, etc
  • Owned and architected scalable and HA configuration management infrastructure
  • Contributed to and maintained open source projects (Collins, Genesis)
  • Built and integrated fully automated and self service OpenStack VM development environment
  • Created, maintained, and backported builds of critical packages to maintain a Tumblr distribution (PHP, Nginx, Ruby, Collectd, Puppet, Java, etc)
  • Performance tuning of critical systems

FactSet Research Systems, Inc - Norwalk, CT

Unix Systems Engineer III, UNIX Team - October 2011 to June 2013

  • Work in environment of 800+ RHEL5 and 6 machines, enabling transition from VMS to Linux at scale
  • Automate and simplify patching, builds, configuration management, deployments, and decommissions
  • Build and configure physical and virtual systems with CFEngine and homemade provisioning tools
  • Lead GPFS engineer; manage 150+ node clusters, tuned for application performance
  • Debug and patch critical issues in upstream projects, build and deploy custom RPMs
  • Design front and back-end of large internal websites using modern technologies and techniques
  • Design and manage services providing REST interfaces to MySQL, web infrastructure, and provisioning

Voice Engineer, Voice Engineering (Core Network Engineering) - July 2010 to October 2011

  • Designed, implemented, and supported a global voice network 
  • Built complex client-side applications to support global consultant workforce 
  • Designed internal reporting tools using modern languages, libraries, and practices 
  • Configured dial plan to support toll-aversion, mixed VOIP and POTS infrastructure 
  • Worked with Cisco voice routers, CallManager, Unity Messaging, and Unified Contact Center

Washington University Network Services & Support - St. Louis, MO

UNIX Systems Administrator - March 2009 to July 2010

  • Maintained and deployed production Linux and Solaris environments 
  • Designed custom backup, HA, and monitoring solutions 
  • Managed IP backbone networks with I1 and I2 connectivity 
  • Managed campus-wide DNS and IP 
  • Implemented new technologies as they became available to improve network service 

Hi/Tec Copy Center - St. Louis, MO

Copier Operator/Customer Service Representative - August 2004 to September 2008

  • Collaborated with customers to obtain job specifications 
  • Operated and maintained Canon and Xerox copiers and print servers 
  • Designed customer's orders with professional graphic design software 
  • Mounted and framed large format posters 

Education

Washington University in St. Louis, MO - September 2006 to May 2010

  • Bachelor of Science in Applied Science with a double major in:
    • Computer Science (Cum Laude)
    • Germanic Languages & Literature
  • Dean's List Fall 2006, Fall 2007, Spring 2008, Spring 2009
  • Overall cumulative GPA 3.71

Volunteer Work

St. Louis Science Center - St. Louis, MO

Volunteer Gallery Aide - June 2001 to August 2004

  • Managed the Cyberville Gallery 
  • Aided in leading the Lego Mindstorms ticketed activity 
  • Supervised activities in the Puzzles Exploradome Exhibit 
  • Organized sponsored LAN party events