Senior Machine Learning Engineer, AI Platform

• Design, build, and operate core AI platform components for training, deploying, and serving ML models in production.
• Own model serving and inference workflows end-to-end, driving improvements in reliability, scalability, and performance.
• Lead optimization of inference systems for throughput, latency, and cost efficiency across CPU and GPU workloads.
• Implement observability practices and partner with cross-functional teams to enable AI-powered features.

By building scalable, privacy-respecting AI infrastructure, this role enables Mozilla to deliver intelligent features that empower users and uphold the internet as a public resource, aligning with the mission to make the internet better for people.

• Bachelor's degree with 4–6 years of relevant industry experience, or Master's degree with significant hands-on experience building and operating production ML systems, or equivalent work experience.
• Strong experience developing in Python for machine learning systems, backend services, or distributed data processing.
• Proven experience deploying and operating ML workloads in cloud environments with production-grade infrastructure.
• Solid understanding of model serving architectures, inference pipelines, and performance tradeoffs; hands-on experience with GPU-based workloads.

• 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
• Salary range: $139,000 – $218,000 USD (depending on location tier)