- Worked in a team of Engineers and Data Scientists to build an unsupervised ML anomaly detection application, using spark and scala.- Built an avro to parquet conversion application as part of the main cyber security platform which optimizes file sizes and detects and handles malformed avro files, using spark and scala.- Wrote a distributed k-medoids library based off a paper and reference implementation in spark and scala.- Wrote an FP library to wrap a popular config library so any errors while parsing the config are tracked back to the bad configuration.- Ongoing maintenance of the main cyber security platform including bug fixes, enhancements, etc.- Drove process improvements including moving to Kanban, pull request guidelines, better communication tooling.

- Built a metadata web service in Haskell backed by AWS RDS PostgreSQL which is used as a core part of data pipelines.- Worked in a team of Engineers and Data Scientists to build and automate data pipelines which process hundreds of terabytes of data written in Haskell, Scala, and Shell that use a combination of AWS S3, local disk, and Hadoop HDFS.- At Ambiata, data quality is key to our success, even small errors could have serious consequences. As a mentor, I taught people new to dealing with data, the risks of certain techniques, helped build good practices into tooling, and generally ensured that Ambiata was successful in staying on top of data issues.- Worked in a team of Engineers to design and build ETL tools written in Haskell and Scala on Hadoop MapReduce.- Added new features and fixed bugs in existing tools and libraries written in Haskell and Scala.- Core developer on Ivory - A Hadoop MapReduce based scalable feature store designed for machine learning, written in Scala.

- Tech lead of a mid size engineering team for the Yahoo Web Of Objects Knowledge Base (WOOKB) platform.- Worked with Data Scientists, Engineers, Architects and Product Managers to design and build a scalable and extensible platform written in Java on top of Hadoop MapReduce for managing structured data knowledge bases.

SearchMonkey:- Lead Engineer for Yahoo SearchMonkey developer tool stack.- Worked in a team of Product Managers and Engineers to design, develop, and maintainsemantic search related applications written in PHP.- Designed a REST web service which powered the developertool and internal administration tool.Web Search:- Worked with local and remote engineering teams to enhance the UK Search page, based off results from a query intent engine. This required integrating with web services for sport, movies, music, and maps using PHP.Yahoo Hosted Search:- Designed and built a completely new version of Yahoo’s Hosted Search (YHS) in PHP, localised to 48 different markets and running in 5 different data centres around the world.