Booking

July 2019- Present
Amsterdam, Netherlands

Site Reliability Engineer

• Own services written in Java and Perl that protect company's customer-facing services from external attacks.
• Establish SLOs and associated monitoring and alerting
• Client library development and support.
• Write Post-Mortems and end-user documentation
• Participate in on-call schedule for services.
• Participate in company-wide Datacenter failover drills.

Sift

January 2017 - March 2019
San Francisco, USA

Site Reliability Engineer

• Developed automatic failover service written in Java and running on Kubernetes, for replicated HBase cluster pairs to increase availability and reduce need for human response to instance failures.
• Led infrastructure migration on Amazon Web Services (AWS) from Chef to Terraform and Salt, improving scalability and ability for other engineers to launch and maintain services.
• Developed Terraform and Salt code to provision environments in Google Cloud Platform (GCP).
• Developed tooling for capacity planning estimation to scale AWS resources economically.
• Contributed to kafka-assigner, an open-source tool to balance Kafka topic partitions across available brokers.

Verbcoach

May 2016 - December 2016
Oakland, USA

Founder

Created second language learning web application using Clojure and PostgreSQL to help students learn Italian, Spanish, and French. Worked closely with a second-language educator currently using the system in his classes. Released parts of the source code as an open source library on Github.

Apple

June 2013-April 2016
Cupertino, USA

Siri Hadoop Operations Engineer

Member of group responsible for deployment, monitoring, and diagnosing of Hadoop clusters running HBase, Solr, Flume, Spark and Kafka. Participated in on-call rotation.

• Developed workstation-local distribution of HBase, allowing developers to test work before cluster deployment.

TrendMicro

March 2010-May 2013
Cupertino, USA

Led Hadoop Group of 4 members, developed and maintained internal Hadoop distribution. Developed automated methods for upgrading and testing Hadoop clusters.

• Led effort to upgrade internal Hadoop distribution from planning to deployment.
• Helped curate Apache source code for internal distribution.
• Security Enhancements to Apache Zookeeper: ZOOKEEPER-938
• Improvements to Apache Giraph: GIRAPH-168, GIRAPH-211
• Integration of Zookeeper Security enhancements with Apache HBase HBASE-2418
• Numerous minor improvements to Apache Hadoop, Apache Pig, Apache HBase, hadoop-lzo.