Contract Software Engineer - DOM Core Firefox/Gecko

&lt;h2&gt;&lt;strong&gt;The role&lt;/strong&gt;&lt;/h2&gt; &lt;p&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;You will help the Firefox DOM Core team improve the health of the Session History area. You will write tests to improve the coverage; you will fix tests and/or problems to improve the Gecko correctness.&lt;/span&gt;&lt;/p&gt; &lt;h2&gt;&lt;strong&gt;Responsibilities&lt;/strong&gt;&lt;/h2&gt; &lt;ul&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Write Web-Platform tests to improve the coverage, and Gecko mochitests as needed&amp;nbsp;&lt;/span&gt;&lt;/li&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Fix the problems and pass the tests to improve the Gecko correctness&lt;/span&gt;&lt;/li&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Work through code review with the relevant Gecko module owners and iterate to landing&lt;/span&gt;&lt;/li&gt; &lt;/ul&gt; &lt;h2&gt;&lt;strong&gt;Definition of done&lt;/strong&gt;&lt;/h2&gt; &lt;p&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Improved Session History test coverage and code correctness in Gecko, measured by passed test cases, allowing the team’s senior engineers to focus on security, performance and strategic projects.&lt;/span&gt;&lt;/p&gt; &lt;h2&gt;&lt;strong&gt;Required qualifications&lt;/strong&gt;&lt;/h2&gt; &lt;ul&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Substantial experience in a browser-engine codebase or in automating for a browser-engine, ideally Firefox/Gecko.&lt;/span&gt;&lt;/li&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Solid Javascript and applying that language skill to write automated tests.&lt;/span&gt;&lt;/li&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Proficiency in and experience developing software in C++.&lt;/span&gt;&lt;/li&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Strong debugging skills in a mature larget codebase.&lt;/span&gt;&lt;/li&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Comfort working in the open: public bugs, code review, and upstream landing.&lt;/span&gt;&lt;/li&gt; &lt;/ul&gt; &lt;h2&gt;&lt;strong&gt;Preferred&lt;/strong&gt;&lt;/h2&gt; &lt;ul&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Prior contributions to Gecko or another major browser engine.&lt;/span&gt;&lt;/li&gt; &lt;li style=&quot;font-weight: 400;&quot;&gt;&lt;span style=&quot;font-weight: 400;&quot;&gt;Familiarity with web standards and Web Platform Tests.&lt;/span&gt;&lt;/li&gt; &lt;/ul&gt;<p>Find more <a href="https://www.arbeitnow.co.uk/english-speaking-jobs">English Speaking Jobs in United Kingdom</a> on Arbeitnow</a>