Resume

Professional Experience

Skedulo

Squad Tech Lead July 2019 - Present

Senior Software Developer September 2019 - June 2019

• Developed a high-capacity scheduling system on AWS, which has been deployed successfully in a handful of state-level vaccination rollouts in the US and Canada including California which has processed millions of appointments.
• Developed a distributed batch optimization orchestration system, integrating with multiple external engines to provide route and shift-based solving.

British Telecom

Senior Software Developer June 2018 - August 2019

• Developed a number of small machine learning and analytics security-based tools built on the Spark framework.
• Developed an application for correlating customer devices with external vulnerabilities
• Introduced the ability for building multiple Scala libraries from source using Git submodules and a custom SBT plugin
• Built a small in-house service for synchronising Git repositories from Bitbucket to Gitlab to facilitate a migration from Teamcity

Ambiata

Team Lead January 2017 - April 2018

Senior Software Developer June 2014 - December 2016

• Led a small team focussed on improving the customer experience around the web-facing aspects of Ambiata. This included being involved at all stages of the product lifecycle; from the initial technical architecture, user design, through to front and back end implementation.
• Replaced a Gulp script with a general-purpose Haskell build tool for building the various web projects at Ambiata. This included supporting an in-house type-safe template language Projector, as well as compiling Sass and Purescript components.
• Developed a number of services written in Haskell for storing metadata about the configuration and state of the Ambiata data pipeline.
• Involved in the development of a number of Haskell tools and libraries for AWS-based service deployment and discovery.
• A core developer on Ivory, a Hadoop-based application written in Scala optimised for storing large data to allow for efficient generation of machine-learning features.

Atlassian

Senior Software Developer Jan 2012 - June 2014

• Senior Developer on Stash, involved with all stages of the development cycle. From feature planning, to implementation and support.

• Git expert:

  • Ran a Git Pro Bootcamp class for new Atlassian_ employees.
  • Converted a large number of SVN repositories to Git.
  • http://blogs.atlassian.com/2012/03/git-vs-mercurial-why-git/

• Introduced FP into various of Stash:

  • Wrote a number of Scala plugins for implementing server-side functionality.
  • Extended use of Underscore.js with a custom library.
  • Bacon.js for event handling and stream processing.
  • Training (FP and FRP)

• Heavy contributor to Stash developer community:

  • https://community.atlassian.com/t5/user/viewprofilepage/user-id/781511
  • https://community.atlassian.com/t5/solutions/acceptedsolutionsleaderboardpage/node-display-id/board:bitbucket-questions/timerange/all
  • https://bitbucket.org/cofarrell/

Mincom

Software Engineer Level 4 Mar 2010 - Dec 2011

Software Engineer Level 3 Jul 2007 - Feb 2010

• Extended open-source COBOL to Java library to enhance complex legacy systems

  • https://github.com/charleso/naca
• Replaced HTML and JavaScript heavy site to modern Flex RIA

• Migrated teams from Clearcase to Git/Ivy to support development in multiple continents

  • Creator of https://github.com/charleso/git-cc/
• Developed internal model-driven tools, transforming UML to Java and Flex artefacts

The Learning Edge

Software Developer Nov 2003 - Mar 2007

• Worked closely with peers on a small development team
• Analysed, designed and developed features based on requirements
• Maintained versions of products, including regular bug fixing
• Consulted with customers onsite and implemented tailored solutions

Community Experience

• Open Source:

  • Maintainer of Scala Hedgehog, property testing library with integrated shrinking
  • Maintainer of git-cc, bridge between Git and Clearcase
• Co-organiser of ScalaSyd Meetup

• Recent talks:

  • Caught in a Web of Functions @ Lambda Jam 2017
  • Finding More Bugs With Less Effort @ YOW Night 2017

Education

Bachelor of Computing, University of Tasmania, Nov 2003, 87%, GPA 6.67

Deans Roll of Excellence, 2001, 2002, 2003

References provided upon request.