Sam Rawlins

Software Engineer → Senior Software Engineer

• Wrote a web application which previews automated nullability changes being applied to Dart code; functions similar to an IDE

• Implemented new code-generating API for Dart mockito package for compatibility with Dart's upcoming non-nullable type system (PR #236)

• "20% contributor" to Dart static analysis team; work includes
  • a "strict inference" mode (specification in PR #518, implementation in Gerrit CRs 112142, 117201, 117522, 118920, 118909),
  • new static analysis checks (subclassing a sealed class, instantiating a "literal" class w/o const, using a deprecated element from within a package, omitting a return in a function literal, mis-specifying a language version override),
  • improved "unused" elements analysis (Gerrit CRs 124521, 127205, 129860),

• Led type system upgrade for all internal code, to prepare for Dart 2.0; ran a "fixit", engaging 40 engineers to prepare their code bases, changing types and other code in 1600 Dart files.

• Designed a siloed build system for projects that could not be upgraded to Dart 2.0; forked and programatically altered more than 2000 files to keep over 40 applications running indefinitely on Dart 1.

• Lead developer of the Dart mockito (GitHub) package; designed new architecture to handle new Dart type system (initial implementation: PR #26, issue #83, PR #85, user documentation: PR #96.

• Lead developer of the Dart markdown (GitHub) package; significant PRs: Markdown extension support (PR #44), extension sets (PR #55), GitHub-Flavored Markdown tables (PR #78), overhauling link reference definitions (PR #110), example web app (PR #120) live at dart-lang.github.io/markdown, overhauling emphasis and strong emphasis parsing (PR #193), overhauling links (PR #202).

• Joined the "readability approvers" team for the Dart language in December 2018, shaping the style and idioms used for all code written at Google; reviewed > 180 changes in 12 months.

• Recipient of the Dart organization and "Multiplatform" organization's Citizenship Award in Q1 2017, Q2 2019, Q3 2019, and Q4 2019.

• Heavy contributor to the Sass-linting Rubygem, scss-lint; after contributing new linting rules and many bug fixes, am the largest contributor behind the project owner.

Software Engineer in Test

• Designed and implemented a web test runner for Dart, now used by hundreds of developers in Google; test runner builds and runs tests, manages browser windows, caching and selectively re-running tests on file writes.

• Designed and implemented a new Network Emulation feature inside Chromedriver, exposing features from Chrome's DevTools to WebDriver testing (first CR, network presets CR, DELETE CR, offline CR).

  Developers can use this feature to test their web applications under throttled network conditions (high latency, slow speed, offline), a test attribute that was previously incredibly difficult to control.

• Designed and implemented Mobile Emulation support in ChromeDriver (main CR).

Principal Systems Analyst/Developer

• Implemented and customized a new financial system and research administration system.

• Understanding of Java web development, including Spring and Struts.

• Understanding of general (Java) development, using Ant, Maven, Eclipse, Subversion, and Jira.

• Develop tests, scripts, and tools in web-oriented languages (Ruby, JavaScript, CoffeeScript), implementing various tools (Selenium, Sinatra, Subversion, Git, Jira).

System Test and Performance Engineer

• Understanding of Windows and several Unix variants, software testing fundamentals, performance testing concepts and tools.

• Designed performance evaluation automation suite in Ruby.

• Develop tests, scripts, and tools in multiple languages including: C, Java, Perl, Ruby, Python, HTML/JavaScript/CSS.

Bachelor of Science - Mathematics and Computer Science