Stephen Mueller Email and Phone Number

ENGINEERING MANAGER - Analytics Engineering (April 2015 - present)* Built (and continue to build) a team that operates at the intersection between Engineering, Data Warehousing, and Data Science (with an emphasis on Engineering).* I am a technical manager, balancing my time between coding, architecture, and people management.* Team responsibilities include: big data architecture, delivery of report data to partners, ETL of marketing data, and the intermittent development of a data processing application that runs in production.SOFTWARE ARCHITECT - Ad Platforms (March 2014 - April 2015)* Designed and built an extension of one of our ad products to allows bidding on a user's search criteria.* Redesigned and built, with two other engineers, a pipeline for importing bids into our system that: reduces the import time by 95%, dramatically reduces the error rate, and allows business users to monitor import status and history.* Promoted sound development practices by refactoring legacy code and adding unit tests.SOFTWARE ENGINEER - Architecture Team (September 2012 - February 2014)Projects include: * Framework for Java annotation based whitelist input validation. * Promote secure coding practices and tested for security vulnerabilities. * Wrote a complex event processing tool using Esper to detect event patterns in our logs. * Led the company's migration to git.SOFTWARE ENGINEER - Hotel Data Team (February 2012 - September 2012)Projects include: * Incremental data imports from providers. * Backend database schema and internal API's for new hotel data. * Maintained and added features to internal customer feedback tool.

Responsibilities included: * Receive technical escalations and help troubleshoot customer production issues. * Lead ad-hoc technical team to address longer, more widespread issues. * Update executives and management teams, internally and with customer.

Summer 2009 - Summer 2010:* Worked as a software developer on an internal critical account and escalation system, built on Ruby on RailsSummer 2008: * Wrote tcl scripts to automate testing for a Cisco call center component.

Created custom adapters to hook Servprise's reboot technology into servers with proprietary connectors.