Senior Staff Machine Learning Engineer, Gen AI

About Mozilla

Mozilla Corporation is a non-profit-backed technology company that has been shaping the internet for the better over the last 25 years. We are known for pioneering brands like Firefox, the privacy-minded web browser, and Pocket, a service for keeping up with the best content online. With more than 225 million people around the world using our products each month, we are committed to reclaiming an internet built for people, not companies. Our work spans diverse areas including AI, social media, security, and more, all while maintaining our core mission to make the internet better for people.

About This Team And Role

The Firefox team is a community of engineers dedicated to delivering the fastest, friendliest, and most usable browser possible. We are responsible for ensuring that the features you see in the browser work securely, quickly, and efficiently. We are seeking a Senior Staff AI Engineer to help us develop and grow new machine learning-driven products and tools. You will play a key role in enabling safe and healthy machine learning and AI-driven experiences in Firefox.

Responsibilities

• Tackle large open-ended problems and drive them to completion, collaborating with other designers and engineers to enhance the web experience.
• Identify strategic opportunities where machine learning models can improve the Firefox experience.
• Lead the design, development, and integration of innovative machine learning models in Firefox, collaborating cross-functionally with product management, full-stack engineering, and design.
• Stay up-to-date with the latest advancements in machine learning, natural language processing, and related fields to ensure our methodologies remain innovative and relevant.
• Lead by example to upskill the team on AI and generate thought leadership.

What You'll Bring

• 8+ years of experience as an Engineer in machine learning or artificial intelligence.
• Deep knowledge of core web technologies and modern machine learning concepts like deep learning, natural language processing, large language models, and reinforcement learning.
• Ability to identify difficult problems that are important for the organization and collaborate across teams to find the best strategy to resolve them.
• Proven track record of technical leadership across multiple teams, shipping AI products with a high degree of collaboration, flexibility, and respect for diverse perspectives.
• Strong problem-solving skills and the ability to communicate complex concepts to technical and non-technical stakeholders.
• Passion for responsible AI, transparent algorithms, and putting users’ needs first.
• Experience with analyzing large-scale datasets utilizing statistical and machine learning tools.
• Experience with the design of experiments, survey design, and large-scale AB testing.
• Pragmatic approach to moving things forward within specific timeframes, including trade-offs and safeguards when implementing new functionality.
• Excellent written and verbal English communication skills and effective participation in a distributed team.

Bonus Points

• Previous successful contributions to an open-source project.
• Experience with the browser extensions architecture or ecosystem.

What You’ll Get

• Generous performance-based bonus plans.
• Rich medical, dental, and vision coverage.
• Generous retirement contributions with 100% immediate vesting.
• Quarterly all-company wellness days.
• 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.).

Mozilla is committed to diversity, equity, inclusion, and belonging. We encourage applications from everyone, including members of all equity-seeking communities. We are an equal opportunity employer and do not discriminate based on any protected characteristics.