Mentored and worked alongside developers to help them grow while delivering valuable projects and scaling our team.• Led a team that rebuilt LiquidPlanner’s time tracking features using Typescript and React to streamline user interactions, improving customer performance by 30%.• Implemented patterns for collecting product metrics, allowing the product team to make data driven decisions, and the support team to diagnose performance related tickets.• Organized biweekly technical discussions giving all engineers an opportunity to both teach and learn regardless of title or tenure.• Rallied team consensus around Ruby and Javascript style guides, and rolled out a code review process that improved engineer productivity and code quality in the face of rapid team growth.• Built and promoted a front-end pattern library to reduce duplication and onboard new developers.

Tackled major architectural challenges while taking on a greater leadership role.• Extracted and rewrote LiquidPlanner’s probabilistic scheduling engine in NodeJS for correctness, maintainability, and performance, removing all known defects.• Built LiquidPlanner’s multidimensional reporting and analytics backend, providing flexible and fast queries across customer project data using PostgreSQL.• Architected and implemented a low overhead and scalable webhooks delivery system.• Migrated to Rails 3, and later to Rails 4, rewriting core logic to leverage new Rails features.

Improved code quality, testing, and implemented core functionality.• Simplified core Rails domain models and controllers by taking of full advantage of object oriented design principles.• Implemented major customer facing features such as commenting, document management, reporting, and extensive in and outbound email functionality.• Migrated from Ruby 1.8 to 1.9, and learned too much about character encodings in the process.

Worked with multiple organizations to facilitate traffic research that has made your commute better.• Built a data warehouse and reporting system for tracking US and Canadian border traffic using Rails and PostgreSQL.• Implemented a mobile data collection system replacing costly specialized hardware with off the shelf PDAs for a fraction of the cost.• Built numerous tools with Java, Perl, and Ruby to automate laborious tasks, dramatically increasing researcher efficiency.