Mike Hall

Staff Software Engineer

Experience

Engineering Learning & Development Business Partner

Groupon | Chicago, IL | -

Delivered fraud analysis, internal tooling, and a centralized taxonomy service across multiple stacks. Transitioned to leading efforts to rebuild and improve onboarding and engineering retention programs.

  • Built merchant analysis tools in Ruby and CouchDB to generate reports used by sales to identify high-value markets and deals. Impact: Enabled sales teams to prioritize top 10% high-revenue potential deals
  • Rebuilt onboarding and facilitated training across multiple sites; partnered with TalentDev to improve ramp consistency and strengthen manager training. Leadership: Lead architect for global engineering onboarding modernization
  • Designed fraud pattern queries in Vertica and spiked Hadoop/Clojure detection tools to scale analysis. Impact: Scaled fraud detection throughput by 10x using big data patterns
  • Implemented a centralized taxonomy service in Java/MySQL and built the servers to host it, enabling consistent categorization across teams. Impact: Reduced categorization drift across 5 major product teams

Skills: AWS EC2, AWS S3, Airbrake, Apache, Bash, Bootstrap, CSS, Capistrano, Clojure, CouchDB, Cucumber, Git, GitHub, Hadoop, Hubot, Java, JavaLite, JavaScript, Jetty, Mongrel, MySQL, NGINX, Node.js, RSpec, Raphael.js, Redis, Resque, Ruby, Ruby on Rails, Sass, Thin, Unicorn, Vagrant, Vertica, Vim, XHTML, Z shell (Zsh), jQuery