Staff Machine Learning Engineer, Gen AI

Mozilla; Paris; À distance; EUR 80 000 - 120 000; Plein temps

Résumé du poste

Mozilla is seeking a Staff Machine Learning Engineer to join the Firefox team. You'll lead the development and integration of Generative AI solutions within the browser, fostering innovative improvements while collaborating with cross-functional teams. This role offers a chance to make significant contributions to secure and efficient AI-driven experiences overall, shaping the future of web technology.

Prestations

Generous performance-based bonus plans

Rich medical, dental, and vision coverage

Generous retirement contributions

Quarterly wellness days

Country specific holidays and birthday leave

Home office stipend

Annual professional development budget

Quarterly well-being stipend

Considerable paid parental leave

Employee referral bonus program

Qualifications

• 6+ years experience as a Machine Learning engineer.
• Experience with designing and building ML tooling.
• Experience with AI integrations and distributed platforms.

Responsabilités

• Lead the design and integration of Generative AI solutions.
• Build infrastructure for training and inference of LLMs.
• Monitor and optimize deployed models for performance.

Connaissances

Machine Learning

Generative AI

Collaboration

Problem-solving

Outils

Distributed Systems

Description du poste

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Client:

Location:

Paris, France

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

5a13aa6d21b1

Job Views:

6

Posted:

19.06.2025

Expiry Date:

03.08.2025

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Job Description:

Staff Machine Learning Engineer, Gen AI

at Mozilla Corporation

Team: Firefox

Locations: Remote Canada, Remote Netherlands, Remote Sweden, Remote France, Remote Germany, Remote Spain, Remote Belgium, Remote Finland, Remote Denmark, Remote UK, Remote US

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Why Mozilla?

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, and Pocket, a service for keeping up with the best content online. Now, with more than 225 million people around the world using our products each month, we’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’re doing this while never losing our focus on our core mission – to make the internet better for people.

The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’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 open-source software that enables people to enjoy the internet on their terms.

About this team and role:

The Firefox team is a community of engineers who care deeply about delivering the fastest, most usable browser possible. We are responsible for making the things you see in the browser work securely, quickly, and well! We are looking for a Staff Machine Learning Engineer to help us develop and grow new Generative AI driven products and tools. You will play a key role in enabling safe and healthy machine learning and Generative AI driven experiences in Firefox.

What is a Staff Engineer at Mozilla?

A Staff Engineer is the next level from a Senior Engineer. At Mozilla this role can vary but typically a Staff Engineer is a domain expert who leads others within a single team to tackle multi-month projects. Tasks that may be initially ambiguous or require significant planning and require them to influence or direct the work of several engineers. They sequence deliverables and manage risks in their team's projects, provide feedback on our strategy and goals affecting the team, and turn our strategy into action for their team members. Staff Engineers mentor others by stewarding some responsibilities to more junior and senior engineers so they can take on new ones. They collaborate with management on building team consensus and providing direction. Staff Engineers identify gaps and opportunities for improvement to enable a culture of inclusion and allyship, at all levels of the organization.

What you’ll do:

• Lead the design, development, and integration of Generative AI solutions in Firefox, collaborating cross functionally with product management, full stack engineering and design.
• Build infrastructure for training and inference of LLMs and small language and vision models for use cases on the web and mobile Firefox product experiences.
• Implement robust validation and testing procedures to ensure the developed models' generalizability and reliability
• Continuously monitor and optimize deployed models for performance and efficiency

What you'll bring:

• 6+ years experience as a Machine Learning engineer building tooling and services for machine learning applications in production.
• Experience with designing and building machine learning tooling and infrastructure for training, deploying, inference and validation of models.
• Experience with distributed systems and platforms for AI integrations across a breadth of applications such as LLM APIs, Cloud based and open source tooling.
• Leading architecture designs to execution independently and track record of improving the team’s overall AI development velocity.
• Strong problem-solving skills and ability to communicate complex concepts to technical and non-technical stakeholders.
• Experience working collaboratively with product managers, project managers, and/or other non-engineering teams.
• Effective documentation and communication skills on a distributed team.
• Commitment to our values: Welcoming differences, Being relationship-minded, Practicing responsible participation, Having grit

Bonus Points

• Knowledge of and experience with using LLM solutions across different cloud providers
• You have previously successfully contributed to an open source project.
• Track record of not only building one, but multiple projects deployed with an active user base.
• Experience with responsible AI, transparent algorithms, and putting users’ needs first.
• Excellent communication skills, both in written and presentation form. You have the ability to quickly distill sophisticated topics into concepts that are tailored for your target audience.
• You are a lifelong learner, and continue to refine and improve your skills when you see an opportunity to do so.
• Experience with the browser extensions architecture or ecosystem.
• Experience working in open source environments.

What you’ll get:

• Generous performance-based bonus plans to all eligible employees - we share in our success as one team
• Rich medical, dental, and vision coverage
• Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
• Quarterly all-company wellness days where everyone takes a pause together
• Country specific holidays plus a day off for your birthday
• One-time home office stipend
• Annual professional development budget
• Quarterly well-being stipend
• Considerable paid parental leave
• Employee referral bonus program
• Other benefits (life/AD&D, disability, EAP, etc. - varies by country)