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	<title>Remote Work UkraineSenior Software Engineer, OS Integration at Mozilla (Remote) | Remote Work Ukraine</title>
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	<title>Senior Software Engineer, OS Integration at Mozilla (Remote) | Remote Work Ukraine</title>
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		<title>Senior Software Engineer, OS Integration</title>
		<link>https://remoteworkukraine.com/remote-job/senior-software-engineer-os-integration-mozilla-11-11-2026/</link>
		<comments>https://remoteworkukraine.com/remote-job/senior-software-engineer-os-integration-mozilla-11-11-2026/#respond</comments>
		<pubDate>Wed, 11 Nov 2026 11:06:42 +0000</pubDate>
		<dc:creator>Mozilla</dc:creator>
		
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				<description><![CDATA[
			<p><b>Employer</b>: Mozilla</p>
						<p><b>Job Type</b>: Full Time</p>
						<p><b>Location</b>: </p>
			<p>Why Mozilla? Mozilla Corporation is the non-profit-backed technology company that...</p>
<p>The post <a href="https://remoteworkukraine.com/remote-job/senior-software-engineer-os-integration-mozilla-11-11-2026/">Senior Software Engineer, OS Integration</a> appeared first on <a href="https://remoteworkukraine.com">Remote Work Ukraine</a>.</p>
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			<p><b>Employer</b>: Mozilla</p>
							<p><b>Job Type</b>: Full Time</p>
						<p><b>Location</b>: </p>
			<div class="gmail_default" style="font-size: small;">
<div>
<p><strong>Why Mozilla?</strong></p>
<p><span style="font-weight: 400;">Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we&#8217;re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we&#8217;re doing this while never losing our focus on our core mission  to make the internet better for people. </span></p>
<p><span style="font-weight: 400;">The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren&#8217;t beholden to any shareholders  only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute </span><strong>open-source</strong><span style="font-weight: 400;"> software that enables people to enjoy the internet on their terms. </span></p>
<p><strong>About the OS Integration team:</strong></p>
<p><span style="font-weight: 400;">The OS Integration team ensures Firefox works well with the host operating system and environment. We&#8217;re a distributed team with expertise in Windows, macOS, and Linux-based operating systems. Our responsibilities include developing fixes and improvements for Firefox related to Windows, macOS, and Linux environments. This might include integration with a new OS feature or fixing an OS-specific user interface bug. Other responsibilities include native crash reporting, OS abstraction layers, sandboxing, hardening, updater, and enterprise DLP support. </span></p>
<p><strong>About the role:</strong></p>
<p><span style="font-weight: 400;">As a member of the OS Integration team, you&#8217;ll develop fixes, improvements, and new features for Firefox. In many cases work may be cross-platform or have a cross-platform component. This role will include maintenance and development of the installer and updater of Firefox. You&#8217;ll contribute to the team through code review and discussion.</span></p>
<p><strong>What you&#8217;ll do: </strong></p>
<ul>
<li style="font-weight: 400;"><span style="font-weight: 400;">Improve the quality of Firefox and other Mozilla products by debugging and fixing software defects, improving the browsing experience for hundreds of millions of users.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Contribute to new features and improvements.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Break down tasks and work with others to deliver solutions.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Collaborate with experienced software engineers.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Perform code reviews and provide technical direction.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Work with a geographically-distributed development team.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Interact with teams throughout the organization.</span></li>
</ul>
<p><strong>What you&#8217;ll bring: </strong></p>
<ul>
<li style="font-weight: 400;"><span style="font-weight: 400;">5+ years of overall software engineering experience</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Strong knowledge of C and C++</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Experience with desktop application development on Windows, macOS, or Linux with C++.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Knowledge of web technologies such as Javascript and HTML.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Knowledge of secure coding practices and memory safety concerns.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Strong problem-solving and debugging skills.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Written and verbal communication skills with a collaborative mindset.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Willingness to work effectively in a distributed team environment.</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Commitment to our values:</span></li>
<ul>
<li style="font-weight: 400;"><span style="font-weight: 400;">Play to win</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Build for People first</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Engage Evidence over Ego</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Decide and Deliver</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Ship, learn and repeat</span></li>
</ul>
</ul>
<p><strong>Bonus Points for experience with:</strong></p>
<ul>
<li style="font-weight: 400;"><span style="font-weight: 400;">Installer and/or Updater development on any OS</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Windows internals like the BITS server or MSIX packages</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Open-source contributions or personal engineering projects</span></li>
</ul>
<p><strong>What you&#8217;ll get:</strong></p>
<ul>
<li style="font-weight: 400;"><span style="font-weight: 400;">Generous performance-based bonus plans to all eligible employees &#8211; we share in our success as one team</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Rich medical, dental, and vision coverage</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Quarterly all-company wellness days where everyone takes a pause together</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Country specific holidays plus a day off for your birthday</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">One-time home office stipend</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Annual professional development budget</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Considerable paid parental leave</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Employee referral bonus program</span></li>
<li style="font-weight: 400;"><span style="font-weight: 400;">Other benefits (life/AD&amp;D, disability, EAP, etc. &#8211; varies by country)</span></li>
</ul>
<p><strong>About Mozilla </strong></p>
<p>Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.</p>
<p><strong>Commitment to diversity, equity, inclusion, and belonging</strong></p>
<p>Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company&#8217;s core mission.  We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientation<span style="color: #003366;">s, </span>gender identities, and expressions.</p>
<p>We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at <a class="external-link" href="mailto:hiringaccommodation@mozilla.com" rel="nofollow">hiringaccommodation@mozilla.com</a> to request accommodation.</p>
<p>We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws.  Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.</p>
<p>Group: D</p>
<p>#LI-REMOTE</p>
<p>Req ID: R3288</p>
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<p><strong>Hiring Ranges:</strong></p>
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<div class="title">Remote Spain</div>
<div class="pay-range"><span>58.000</span><span class="divider"></span><span>77.000 EUR</span></div>
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<p>The post <a href="https://remoteworkukraine.com/remote-job/senior-software-engineer-os-integration-mozilla-11-11-2026/">Senior Software Engineer, OS Integration</a> appeared first on <a href="https://remoteworkukraine.com">Remote Work Ukraine</a>.</p>
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