Key Achievements

Built several core technologies used at Nominum to provide our N2 solutions, including ThreatAvert, Engage, and Reach.

• Designed and built a RADIUS IP Address change management solution capable of handling over 10,000 IP address changes per second in a production environment.
• Lead engineer on an internal high performance, large scale reporting engine.
• Implemented several new features on Nominum's high-performance HTTP Proxy software, deployed to millions of end users world-wide.
• Worked closely with geographically diverse customers to build robust solutions to their problems.

Technologies Used

• C++, Java, Python, Ruby, Apache Kafka, Apache Zookeeper, PostgreSQL, Jira

As an early employee, helped build a popular and growing Consumer-to-Consumer online marketplace with Ruby on Rails, MySQL, Apache, Varnish, RabbitMQ, and Heroku.

Key Achievements

• Designed and built a fraud detection and prevention system that reduced fraudulent activity by 80% and significantly increased customer satisfaction.
• Architected and wrote tools to perform competitive pricing analysis to ensure healthy market prices.
• Spearheaded integration of the Glyde Marketplace with PayPal (payment and withdrawal), and Twilio (SMS messaging).
• Implemented a cohort analysis system to analyze buying and selling patterns to improve business strategy decision making.
• Developed a system to publish daily Glyde inventory to comparison shopping sites, increasing customer awareness and traffic.
• Improved developer productivity by implementing simulated external services for use during development and testing.
• Developed frameworks for unified package tracking and delivery notification via several shipping companies.

Technologies Used

• Ruby, Ruby on Rails, MySQL, JavaScript

Software Engineer with the LOCKSS Program at Stanford University, developing an Open Source distributed digital content preservation system.

Key Achievements

• Architected and implemented major portions of the new LOCKSS peer-to-peer polling protocol (LCAP V3), resulting in a ten-fold improvement in content auditing and repair efficiency over the previous implementation.
• Created a complete testing environment in Python for stress and integration testing of the LOCKSS Network.
• Designed and built a dynamic Java plugin extension system for automatically finding and updating running LOCKSS systems with new functionality.
• Drove the creation of internal project management tools using Ruby on Rails, streamlining the ability to publish new content to the LOCKSS network.

Technologies Used

• Java, Jetty

Developer on the back end of a popular web conferencing platform built on technology from Xerox PARC.

Key Achievements

• Designed and built a distributed, scalable media conversion system to encode recorded PlaceWare Web Meeting audio and video content.
• Increased developer productivity by creating a system to streamline the work of localization engineers.

• Migrated the engineering build environment from Java 1.0 to Java 1.3, reducing the product build time by more than 300%.