Senior Machine Learning Engineer | Wikimedia Foundation | Remote (United States)
Posted 2025-09-08
Remote, USA
Full Time
Immediate Start
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Summary</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">The Wikimedia Foundation is looking for a Senior Machine Learning Engineer to join a small team spread across UTC -5 to UTC +3 (Eastern Americas, Europe, and Africa) and will report to the Machine Learning Engineering Manager, Ilias Sarantopoulos. As a Senior Machine Learning Engineer, you will be responsible for planning, developing, training, documenting, deploying, and managing production machine learning models. In this role, you will work with product teams, SREs, researchers, and the volunteer community on machine learning models making Wikipedia and similar projects better.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">You are responsible for:</strong></p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Working with internal customers (e.g. other teams inside the Wikimedia Foundation) and external customers (e.g. Wikipedia editors and other volunteers) to build, deploy, and manage productionized, scaled machine learning models. This includes communicating with the customers early to assess needs, working with them to scope out the appropriate tooling that might be needed, gathering the training data, training the model is a repeatable process, deploying the model on a deployment cluster, and monitoring that model over time.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Helping other teams at the Foundation and the broader community understand the work conducted on the team.</span></li>
</ul>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Skills and Experience:</strong></p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">5+ years of experience in an MLE and/or MLOps role as part of a team deploying production models.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Experience with popular Python ML libraries.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Strong English language skills.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Experience with global coworkers.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Experience with remote work and/or async work.</span></li>
</ul>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Qualities that are important to us:</strong></p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Able to work collaboratively on remote teams.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Experience with volunteer communities and open-source software development.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Positivity and solution focused.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Independently motivated.</span></li>
</ul>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Additionally, we’d love you to fit <em>one</em> of three skill sets:</strong></p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200"><strong class=" font-semibold">ML infrastructure:</strong> You have interest and experience in building backend production ML systems. You understand how real world MLOps systems work and how to use infrastructure to maximize the performance of models.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200"><strong class=" font-semibold">Model development and maintenance:</strong> You have interest and experience converting a model from a researcher into an efficient, high performing production ML service. You understand how to expand on the work of a researcher to develop and maintain models in production.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200"><strong class=" font-semibold">ML product Integration:</strong> You have interest and experience in helping front-end and feature product teams effectively use machine learning models. You understand the needs and challenges of product teams using machine learning and have built services that help make ML-related work of those teams easier and faster.</span></li>
</ul>
<h4>About the Wikimedia Foundation</h4>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">The Wikimedia Foundation is the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projects. Our vision is a world in which every single human can freely share in the sum of all knowledge. We believe that everyone has the potential to contribute something to our shared knowledge, and that everyone should be able to access that knowledge freely. We host Wikipedia and the Wikimedia projects, build software experiences for reading, contributing, and sharing Wikimedia content, support the volunteer communities and partners who make Wikimedia possible, and advocate for policies that enable Wikimedia and free knowledge to thrive.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">The Wikimedia Foundation is a charitable, not-for-profit organization that relies on donations. We receive donations from millions of individuals around the world, with an average donation of about $15. We also receive donations through institutional grants and gifts. The Wikimedia Foundation is a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California, USA.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><em><strong class=" font-semibold">As an equal opportunity employer, the Wikimedia Foundation values having a diverse workforce and continuously strives to maintain an inclusive and equitable workplace. We encourage people with a diverse range of backgrounds to apply. We do not discriminate against any person based upon their race, traits historically associated with race, religion, color, national origin, sex, pregnancy or related medical conditions, parental status, sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, or any other legally protected characteristics.</strong></em></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">The Wikimedia Foundation is a remote-first organization with staff members including contractors based 40+ countries*****. Salaries at the Wikimedia Foundation are set in a way that is competitive, equitable, and consistent with our values and culture. The anticipated annual pay range of this position for applicants based within the United States is US$109,047 to US $169,455 with multiple individualized factors, including cost of living in the location, being the determinants of the offered pay. For applicants located outside of the US, the pay range will be adjusted to the country of hire. We neither ask for nor take into consideration the salary history of applicants. The compensation for a successful applicant will be based on their skills, experience and location.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">*Please note that we are currently able to hire in the following countries:</strong> Australia, Austria, Bangladesh, Belgium, Brazil, Canada, Colombia, Costa Rica, Croatia, Czech Republic, Denmark, Egypt, Estonia, Finland, France, Germany, Ghana, Greece, India, Indonesia, Ireland, Israel, Italy, Kenya, Mexico, Netherlands, Nigeria, Peru, Poland, Singapore, South Africa, Spain, Sweden, Switzerland, Uganda, United Arab Emirates, United Kingdom, United States of America and Uruguay. Our non-US employees are hired through a local third party Employer of Record (EOR).</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">We periodically review this list to streamline to ensure alignment with our hiring requirements.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">All applicants can reach out to their recruiter to understand more about the specific pay range for their location during the interview process.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><em><strong class=" font-semibold">If you are a qualified applicant requiring assistance or an accommodation to complete any step of the application process due to a disability, you may contact us at recruiting@wikimedia.org or +1 (415) 839-6885.</strong></em></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">More information</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><a href="https://wikimediafoundation.org/about/jobs/#section-12" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">U.S. Benefits & Perks</strong></a><br />
<a href="https://wikimediafoundation.org/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Wikimedia Foundation</strong></a><br />
<a href="https://foundation.wikimedia.org/wiki/Applicant%5Fprivacy%5Fpolicy" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Applicant Privacy Policy</strong></a><br />
<a href="https://diff.wikimedia.org/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">News from across the Wikimedia movement</strong></a><br />
<a href="https://wikimediafoundation.org/news/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Blog</strong></a><br />
<a href="https://meta.wikimedia.org/wiki/Strategy/Wikimedia%5Fmovement/2017" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Wikimedia 2030</strong></a><br />
<a href="https://medium.com/freely-sharing-the-sum-of-all-knowledge/we-stand-for-racial-justice-49c31afbabca" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Our Commitment to Equity</strong></a><br />
<a href="https://www.youtube.com/watch?v=OQzZI0l3IOw" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">This is Wikimedia Foundation</strong></a><br />
<a href="https://www.youtube.com/watch?v=xQ4ba28-oGs" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Facts Matter</strong></a><br />
<a href="https://wikimediafoundation.org/wiki/Our%5Fprojects" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Our Projects</strong></a><br />
<a href="https://techblog.wikimedia.org/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Our Tech Stack</strong></a></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">The Wikimedia Foundation is looking for a Senior Machine Learning Engineer to join a small team spread across UTC -5 to UTC +3 (Eastern Americas, Europe, and Africa) and will report to the Machine Learning Engineering Manager, Ilias Sarantopoulos. As a Senior Machine Learning Engineer, you will be responsible for planning, developing, training, documenting, deploying, and managing production machine learning models. In this role, you will work with product teams, SREs, researchers, and the volunteer community on machine learning models making Wikipedia and similar projects better.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">You are responsible for:</strong></p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Working with internal customers (e.g. other teams inside the Wikimedia Foundation) and external customers (e.g. Wikipedia editors and other volunteers) to build, deploy, and manage productionized, scaled machine learning models. This includes communicating with the customers early to assess needs, working with them to scope out the appropriate tooling that might be needed, gathering the training data, training the model is a repeatable process, deploying the model on a deployment cluster, and monitoring that model over time.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Helping other teams at the Foundation and the broader community understand the work conducted on the team.</span></li>
</ul>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Skills and Experience:</strong></p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">5+ years of experience in an MLE and/or MLOps role as part of a team deploying production models.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Experience with popular Python ML libraries.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Strong English language skills.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Experience with global coworkers.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Experience with remote work and/or async work.</span></li>
</ul>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Qualities that are important to us:</strong></p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Able to work collaboratively on remote teams.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Experience with volunteer communities and open-source software development.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Positivity and solution focused.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Independently motivated.</span></li>
</ul>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Additionally, we’d love you to fit <em>one</em> of three skill sets:</strong></p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200"><strong class=" font-semibold">ML infrastructure:</strong> You have interest and experience in building backend production ML systems. You understand how real world MLOps systems work and how to use infrastructure to maximize the performance of models.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200"><strong class=" font-semibold">Model development and maintenance:</strong> You have interest and experience converting a model from a researcher into an efficient, high performing production ML service. You understand how to expand on the work of a researcher to develop and maintain models in production.</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200"><strong class=" font-semibold">ML product Integration:</strong> You have interest and experience in helping front-end and feature product teams effectively use machine learning models. You understand the needs and challenges of product teams using machine learning and have built services that help make ML-related work of those teams easier and faster.</span></li>
</ul>
<h4>About the Wikimedia Foundation</h4>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">The Wikimedia Foundation is the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projects. Our vision is a world in which every single human can freely share in the sum of all knowledge. We believe that everyone has the potential to contribute something to our shared knowledge, and that everyone should be able to access that knowledge freely. We host Wikipedia and the Wikimedia projects, build software experiences for reading, contributing, and sharing Wikimedia content, support the volunteer communities and partners who make Wikimedia possible, and advocate for policies that enable Wikimedia and free knowledge to thrive.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">The Wikimedia Foundation is a charitable, not-for-profit organization that relies on donations. We receive donations from millions of individuals around the world, with an average donation of about $15. We also receive donations through institutional grants and gifts. The Wikimedia Foundation is a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California, USA.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><em><strong class=" font-semibold">As an equal opportunity employer, the Wikimedia Foundation values having a diverse workforce and continuously strives to maintain an inclusive and equitable workplace. We encourage people with a diverse range of backgrounds to apply. We do not discriminate against any person based upon their race, traits historically associated with race, religion, color, national origin, sex, pregnancy or related medical conditions, parental status, sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, or any other legally protected characteristics.</strong></em></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">The Wikimedia Foundation is a remote-first organization with staff members including contractors based 40+ countries*****. Salaries at the Wikimedia Foundation are set in a way that is competitive, equitable, and consistent with our values and culture. The anticipated annual pay range of this position for applicants based within the United States is US$109,047 to US $169,455 with multiple individualized factors, including cost of living in the location, being the determinants of the offered pay. For applicants located outside of the US, the pay range will be adjusted to the country of hire. We neither ask for nor take into consideration the salary history of applicants. The compensation for a successful applicant will be based on their skills, experience and location.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">*Please note that we are currently able to hire in the following countries:</strong> Australia, Austria, Bangladesh, Belgium, Brazil, Canada, Colombia, Costa Rica, Croatia, Czech Republic, Denmark, Egypt, Estonia, Finland, France, Germany, Ghana, Greece, India, Indonesia, Ireland, Israel, Italy, Kenya, Mexico, Netherlands, Nigeria, Peru, Poland, Singapore, South Africa, Spain, Sweden, Switzerland, Uganda, United Arab Emirates, United Kingdom, United States of America and Uruguay. Our non-US employees are hired through a local third party Employer of Record (EOR).</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">We periodically review this list to streamline to ensure alignment with our hiring requirements.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">All applicants can reach out to their recruiter to understand more about the specific pay range for their location during the interview process.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><em><strong class=" font-semibold">If you are a qualified applicant requiring assistance or an accommodation to complete any step of the application process due to a disability, you may contact us at recruiting@wikimedia.org or +1 (415) 839-6885.</strong></em></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">More information</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><a href="https://wikimediafoundation.org/about/jobs/#section-12" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">U.S. Benefits & Perks</strong></a><br />
<a href="https://wikimediafoundation.org/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Wikimedia Foundation</strong></a><br />
<a href="https://foundation.wikimedia.org/wiki/Applicant%5Fprivacy%5Fpolicy" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Applicant Privacy Policy</strong></a><br />
<a href="https://diff.wikimedia.org/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">News from across the Wikimedia movement</strong></a><br />
<a href="https://wikimediafoundation.org/news/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Blog</strong></a><br />
<a href="https://meta.wikimedia.org/wiki/Strategy/Wikimedia%5Fmovement/2017" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Wikimedia 2030</strong></a><br />
<a href="https://medium.com/freely-sharing-the-sum-of-all-knowledge/we-stand-for-racial-justice-49c31afbabca" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Our Commitment to Equity</strong></a><br />
<a href="https://www.youtube.com/watch?v=OQzZI0l3IOw" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">This is Wikimedia Foundation</strong></a><br />
<a href="https://www.youtube.com/watch?v=xQ4ba28-oGs" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Facts Matter</strong></a><br />
<a href="https://wikimediafoundation.org/wiki/Our%5Fprojects" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Our Projects</strong></a><br />
<a href="https://techblog.wikimedia.org/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">Our Tech Stack</strong></a></p>