Senior Data Engineer at Mozilla | Remote

Join Mozilla as a Senior Data Engineer!At Mozilla, we are dedicated to crafting an internet that is better for everyone. As a key member of our Data Engineering team, you will be instrumental in managing the complete data lifecycle. Your role will involve transforming raw data into reliable models that empower our team to make informed decisions.In this position, you will bridge the gap between our technical systems and business needs, enhancing our data platform while ensuring that the data is easily accessible and trustworthy for other teams. Recent initiatives include launching a data catalog, enhancing data observability, and implementing a medallion architecture to ensure our data remains reliable and accurate.

Why Join Mozilla?Mozilla Corporation is a technology company driven by a non-profit mission, dedicated to improving the internet for over 25 years. Home to innovative products like Firefox, our privacy-focused web browser, we serve over 225 million users globally each month. As we embark on our next 25 years, we are committed to shaping technology for the benefit of individuals rather than corporations, focusing on areas such as AI, social media, and security while upholding our core mission of enhancing the online experience for all.Being fully owned by the 501(c) non-profit Mozilla Foundation, we prioritize our mission over shareholder interests. Together with thousands of volunteers and collaborators worldwide, we develop and distribute open-source software that empowers users to navigate the internet on their terms.About the Team and Role:As a Senior Data Engineer at Mozilla, you will play a crucial role within our Data Engineering team, which oversees the complete data lifecycle—from the ingestion and transformation of raw data to the creation of reliable, high-quality models that enable informed decision-making across the organization.You will serve as a vital link between our technical systems and business requirements, contributing to the enhancement of our data platform while ensuring that the data is user-friendly and trustworthy. Recent advancements by the team include the launch of a data catalog, the introduction of data observability, and the implementation of a medallion architecture to guarantee data reliability, accuracy, and accessibility. For further insights, check out the Data@Mozilla blog.Your Responsibilities:Develop Data Pipelines: You will design and manage our business data pipelines, transforming Firefox telemetry data into structured, high-quality datasets that Mozillians can depend on.

Join Mozilla, a pioneering technology company dedicated to enhancing the internet experience for users around the globe. As a Senior Software Engineer on the Firefox Monitor Engineering Team, you will play a vital role in developing tools that empower individuals to safeguard their online privacy in an increasingly complex digital landscape. Our team specializes in creating innovative solutions that alert users to data breaches and help them regain control of their personal information.This position involves contributing to a state-of-the-art, cloud-native application built with Node.js and TypeScript. You will be responsible for feature development, maintaining cloud infrastructure, and supporting backend systems that keep millions of users informed and protected.

Role Overview Mozilla is looking for a Senior Data Scientist to join the Product team. This fully remote position is open to candidates based in the US. What You Will Do Analyze large and complex datasets to uncover trends and inform product decisions Develop predictive models that support product strategy Deliver clear, actionable insights to guide product direction Work with teams across disciplines to define key metrics and measure product performance Support data-driven decision-making throughout the product lifecycle Collaboration This role involves close collaboration with engineering, product management, and other partners to ensure that data informs every stage of product development and improvement.

Mozilla is hiring a Staff Data Scientist to help shape the future of the Firefox browser. This remote role centers on using data science expertise to guide product decisions and support Mozilla's commitment to user privacy. Role overview The Staff Data Scientist will generate insights from data to improve user experiences and inform the direction of Firefox. Collaboration with a skilled team is central to the position, with a focus on finding new solutions that support Mozilla's mission. Impact Work in this role will influence both the evolution of Mozilla's products and the broader goal of building a healthier internet. The position offers the chance to make a difference at scale, supporting privacy and innovation for millions of users.

Why Choose Mozilla?Mozilla Corporation, backed by a non-profit foundation, has transformed the internet landscape over the past 25 years. With innovative products like Firefox, a web browser focused on privacy, and Pocket, a tool for curating online content, we support over 225 million users globally each month. Our mission is clear: to shape the next generation of technology and advocate for an internet that prioritizes people over corporations. Our work spans various domains, including AI, social media, and security, while we remain steadfast in our commitment to enhancing the online experience for everyone.Being wholly owned by the Mozilla Foundation, a 501(c)(3) non-profit, ensures that our focus is unwaveringly on our mission rather than shareholder interests. Together with a vibrant community of volunteers and collaborators worldwide, we design, develop, and distribute open-source software that empowers individuals to navigate the internet on their own terms.About the Role and Team:Join the Firefox Monitor Engineering Team, where we create tools that help users manage and respond to data breaches. By alerting users when their credentials are found in compromised datasets, we enable them to regain control over their digital privacy. Serving millions, our work sits at the critical intersection of security, data privacy, and product engineering.As a Senior Software Engineer, you will play a pivotal role in developing a modern, cloud-native application using Node.js and TypeScript. Your responsibilities will include feature development, infrastructure management, and application support. You will oversee backend systems and integrations that keep users informed and secure, while also overseeing the evolution of our cloud infrastructure. Collaborate closely with frontend, SRE, and product teams to deliver robust, privacy-centric features that enhance our service's reliability.

Mozilla is looking for a Staff Data Scientist to help improve the Firefox experience. This fully remote position is open to candidates based in the US. Role overview This role centers on analyzing large datasets and building predictive models that guide product decisions. Staff Data Scientists at Mozilla work closely with teams across engineering, product, and design to ensure insights from user data inform the direction of Firefox. What you will do Analyze complex datasets related to Firefox usage and performance Develop predictive models to identify trends and opportunities Collaborate with cross-functional teams to translate data into actionable recommendations Support data-driven decision making across the organization Who we’re looking for Experience in data science, including statistical analysis and modeling Comfort working with large, diverse datasets Interest in open-source technology and using data to drive product innovation

Mozilla Corporation has a 25-year history of building technology that serves people, not just profits. Backed by a non-profit mission, Mozilla is best known for Firefox, a privacy-focused browser used by over 225 million people each month. The team continues to create products that put user needs and privacy at the center. Role overview The Ads Engineering team develops the foundation for ethical, privacy-first advertising across Mozilla’s portfolio. The Senior Rust Software Engineer will build scalable, client-side ad components using Rust and Python. This work supports privacy-respecting advertising in products like Firefox, Pocket, and MDN. What you will do Design and implement client-side ad systems in Rust and Python Maintain seamless ad experiences that protect user privacy Collaborate with product teams to integrate advertising solutions across Mozilla products Act as a subject matter expert in advertising technology within Mozilla Help improve and refine Mozilla’s advertising systems over time Location This position is fully remote and open to candidates based in the United States.

Join Mozilla, a pioneering technology company dedicated to enhancing the internet experience for billions, as a Staff Security Engineer. In this fully remote role, you will be integral to a dynamic team focused on monitoring and mitigating security incidents across Mozilla’s diverse range of products and services.To learn more about our Hiring Range System, please click this link.Why Mozilla?Mozilla Corporation is a non-profit-backed technology company that has been transforming the internet for over 25 years. With flagship products like Firefox, we prioritize privacy and user-centric experiences. As we continue to grow, with over 225 million monthly users, we are committed to reshaping technology for a better future. Our focus spans AI, social media, security, and more, all while staying true to our mission – to enhance the internet for everyone.As a wholly owned subsidiary of the Mozilla Foundation, we’re free from shareholder pressures, focusing instead on our mission. Together with a global community of contributors, we build and distribute open-source software that empowers individuals to navigate the internet on their own terms.About this team and role:We are seeking an experienced Incident Responder to join our dedicated team, responsible for identifying and addressing security threats targeting Mozilla’s offerings. This critical role requires extensive hands-on experience in security, with a keen understanding of modern attack detection and response strategies. Your ability to communicate effectively and collaborate with diverse teams will be essential as you work to protect the integrity of our products and ensure the safety of our users. Join us in our mission to create a more secure internet.What you’ll do:Monitor security incidents and respond promptly to threats impacting Mozilla’s systems.Collaborate with cross-functional teams to enhance security protocols and incident response strategies.Continuously improve detection mechanisms and response procedures to safeguard our users’ data.

Are you passionate about understanding user behavior and shaping technology for the better? Join Mozilla as a Staff Quantitative User Researcher, where you'll lead innovative research projects that directly influence product strategy and design. Your expertise in quantitative methodologies will help us gain deep insights into user experiences, needs, and motivations.The Firefox User Research team is dedicated to exploring complex problems through a human-centered lens, leveraging both qualitative and quantitative research to drive decision-making. You will collaborate with product managers, designers, engineers, data scientists, and fellow researchers to translate findings into actionable insights that guide our roadmap.

Role Overview Mozilla is hiring a Senior Data Scientist for the Product team. This fully remote position focuses on using data to inform product decisions and improve user experiences. The work centers on analyzing data and applying machine learning to support product development strategies. What You Will Do Collaborate with teams across the company to guide product direction using data-driven insights. Apply data analysis and machine learning techniques to real product challenges. Help shape the future of Mozilla’s products by ensuring they address user needs and encourage innovation.

To view the salary ranges for this position, please select your location using the Apply Now dropdown menu.To understand our Hiring Range System, feel free to click on this link.Why Choose Mozilla?Mozilla Corporation, a non-profit-backed tech company, has been a driving force in improving the internet for over 25 years. With iconic products like Firefox, our privacy-focused web browser, we have over 225 million users globally. As we embark on the next chapter of tech innovation, we remain committed to our core mission: to create a better internet for everyone. Our endeavors span diverse fields, including AI, social media, and security, all while prioritizing user-centric design.Being wholly owned by the non-profit Mozilla Foundation, we prioritize our mission over shareholder profit. Together with a global community of volunteers, we develop and distribute open-source software that empowers users to navigate the internet on their terms.About the Team and Role:The Localization Team oversees the infrastructure vital for localization across all Mozilla products and services, while also supporting our global network of volunteer localizers. As a Senior Software Engineer in this team, you will play a pivotal role in various localization projects and technologies, including open-source libraries like moz-l10n and Pontoon, our Django-based Translation Management System. Your contributions will enhance internationalization features that enrich user experiences across Firefox and other Mozilla products. Additionally, you'll have opportunities to influence the development of standards such as Unicode MessageFormat and DOM Localization.You will participate in architectural discussions, drive feature development within the team, and are expected to work independently on well-defined projects while collaborating closely with peers. At Mozilla, Senior Engineers are seen as key players in our mission to improve the internet.

Role Overview Mozilla is looking for a Senior Software Engineer to join the Engineering Workflow and Continuous Integration team. This position focuses on improving development processes with new software tools and systems. The goal: help engineers ship high-quality products more efficiently. What You Will Do Work closely with teams across Mozilla to design, build, and refine CI/CD pipelines Develop and optimize workflows that support engineering productivity Contribute ideas and code to strengthen the way Mozilla delivers software Location This is a remote position.

Mozilla is looking for a Senior Product Manager to guide the direction of its Advertising Products team. This remote US-based position centers on shaping product strategies and advancing advertising solutions that align with both user needs and partner goals. Role overview This role involves setting vision and priorities for advertising products, working closely with engineering, design, and business teams. The aim is to develop solutions that improve user experience while meeting the demands of the advertising market. What you will do Lead product planning and strategy for advertising initiatives Collaborate with cross-functional groups to deliver new features and enhancements Focus on solutions that benefit both users and partners Location This is a fully remote role open to candidates based in the United States.

Join Mozilla as a 0to1 EngineerAt Mozilla, we are at the forefront of open-source AI development, focusing on research, community engagement, tooling, and advocacy. We are seeking an innovative engineer who can transform abstract ideas into interactive, deployable prototypes that resonate with our developer community.This role is project-based and emphasizes rapid prototyping. You will create tangible demonstrations of open AI infrastructure, developer tools, integrations, and applications that foster engagement and dialogue. Your work will be visible in public forums, contributing to the overall social presence of Mozilla.As a contractor, you will collaborate closely with teams dedicated to Mozilla Intelligence and Harbor, as well as our community and social media leaders, to produce prototypes that establish Mozilla's credibility in developer spaces. Your goal will be to generate working artifacts that drive learning and conversation within the open-source AI ecosystem.

To explore the salary ranges for this position, please select your location from the Apply Now dropdown.For more insights about our Hiring Range System, please click this link.Why Choose Mozilla?Mozilla Corporation is a technology leader backed by a non-profit foundation, dedicated to enhancing the internet for over 25 years. As creators of groundbreaking brands like Firefox, our mission is to reclaim the web for individuals, not corporations. With a community of over 225 million users worldwide, we focus on innovation across various fields such as AI, social media, and security, all while prioritizing our core goal: improving the internet for everyone.Being wholly owned by the Mozilla Foundation, a non-profit 501(c), we are not bound by shareholder interests but are committed to our mission. Together with a global network of volunteers and collaborators, Mozillians develop and distribute open-source software that allows individuals to experience the internet on their own terms.About the Team and Your Role:Join the Firefox User Research team, where we advocate for human-centered approaches to tackle complex challenges through empirical evidence and insights. We utilize both quantitative and qualitative research methods to identify business needs and gather user insights that guide our product and design strategies.As a Senior Staff Quantitative User Researcher, you will spearhead strategic and tactical quantitative studies in collaboration with product managers, designers, engineers, marketers, data scientists, and fellow researchers. Your expertise in quantitative methods will help us understand user experiences, needs, motivations, and behaviors at scale, translating those insights into actionable recommendations that inform our roadmaps and strategies.What You'll Be Responsible For:...

Mozilla is looking for a Senior Product Manager, Advertising Products, to help guide the direction of its advertising solutions. This remote role centers on developing and refining advertising products that support Mozilla’s mission for an open and accessible internet. Role overview This position involves close collaboration with teams across product, engineering, and other functions. The Senior Product Manager will drive both the vision and day-to-day execution for advertising offerings, ensuring each initiative aligns with Mozilla’s values. What you will do Shape and communicate the product vision for advertising solutions Work with cross-functional groups to bring new features and improvements to market Ensure all product decisions support Mozilla’s commitment to an open, accessible web Requirements Extensive experience in product management, particularly with advertising products Strong ability to collaborate across disciplines and teams Clear track record of driving product strategy and execution

Role Overview Mozilla Corporation seeks a Senior Commercial Counsel to support its mission of building a better internet. This remote position centers on providing legal advice for commercial matters and contributing to strategic projects that advance Mozilla’s goals.

Why Join Mozilla? At Mozilla Corporation, a non-profit-backed technology leader, we have been dedicated to improving the internet for over 25 years. Our flagship products, including the privacy-focused Firefox browser, are utilized by over 225 million users worldwide each month. We are committed to shaping the future of technology, focusing on areas such as AI, social media, and security, while prioritizing our mission: to enhance the internet for everyone. As a wholly-owned subsidiary of the Mozilla Foundation, we are free from shareholder pressures and dedicate our efforts to creating open-source software that empowers individuals to navigate the internet on their terms, supported by a global community of contributors and collaborators. About the Team and Role: We are seeking a talented Incident Responder to monitor and counteract security threats across Mozilla’s diverse range of products and services. In this dynamic role, you will be integral to a versatile team, responsible for managing security incidents effectively. Your extensive practical experience in security, along with your knowledge of contemporary detection and response strategies, will be crucial. You will be a trusted partner within Mozilla, known for your prompt and effective crisis management skills and your ability to collaborate with various stakeholders. Above all, you will play a vital role in safeguarding the integrity of Mozilla’s products and protecting our users, all while contributing to our overarching goal of building a more secure internet. Your Responsibilities: Identify and address security incidents on a global scale. Serve as an incident commander, overseeing incidents through their entire response lifecycle. Develop and maintain a suite of security alerts, automated responses, playbooks, and escalation workflows to support a robust 24/7 incident response capability. Collaborate with various teams to enhance our security posture and incident response strategies.

Role Overview Mozilla Corporation is looking for a Senior Commercial Counsel to support our legal team. This remote US-based role focuses on providing legal guidance for our products and services. The position covers a broad range of commercial matters, including contracts, compliance, and intellectual property. What You Will Do Advise on commercial contracts and negotiations Support compliance efforts across Mozilla’s offerings Address intellectual property questions and issues Contribute legal insight to strategic projects Help maintain Mozilla’s standards for user privacy and security About Mozilla Mozilla builds products and services with a focus on privacy and open technology. The legal team partners closely with product and business groups to support Mozilla’s mission and growth.