Mozilla

1 month ago

Senior Machine Learning Engineer, Applied AI Modeling

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 19 hours agoStatus: Live

Job Summary

Senior Machine Learning Engineer focused on applied AI and modern LLM-based applications. You will develop and deploy user-facing AI features inside the Firefox browser, using end-to-end ML tooling, RAG, and generation techniques, while ensuring privacy, latency, and usability in production scenarios.

Location: United States

Workplace: Remote

Employment Type: Full time

Job Function: Data Science & Machine Learning

Key Responsibilities

•Develop and fine-tune large language models (LLMs) for intelligent, safe, and responsive browser interactions
•Apply retrieval-augmented generation (RAG), summarization, classification, and intent modeling techniques in real-world browser workflows
•Use modern ML tooling to support end-to-end model development, including experimentation, evaluation, and rollout
•Collaborate closely with product and engineering partners to design, iterate, and launch features aligned with user needs and Mozilla’s values
•Design and implement experiments to test model behavior in production, analyze results, and iterate based on findings

Pay and Benefits

Perks:Health InsuranceDentalVisionLearning BudgetHome OfficeWell-being StipendParential LeaveAnnual Bonus

Key Requirements

•4+ years of experience in applied machine learning, with a focus on natural language processing or generative AI
•Hands-on experience fine-tuning and evaluating LLMs using modern tools and open-source libraries
•Strong understanding of prompt engineering, embedding-based retrieval, and evaluation strategies for generative applications
•Experience using ML tooling to lead the end-to-end lifecycle of model development—from data exploration to deployment-ready artifacts
•Track record of building user-facing AI features with privacy, latency, and usability considerations

Experience:4+ yearsOpen-sourceAIGenerative AIBrowser

Skills:CommunicationCollaborationProblem-solving

Languages:English

Tech Stack:Hugging FaceLangChainWeights & BiasesRayLLMsRetrieval-augmented generationEmbedding-based retrieval

Company Brief

Mozilla

Mozilla is a mission-driven organization that builds open-source internet products (notably the Firefox browser) and advocates for an open, private, and secure web through software, research, and community programs.

Industry: Enterprise Software

Company Size: Large (251 to 1,000 employees)

Growth: Nonprofit & NGO

Headquarters: San Francisco, United States

Founded: 1998

Glassdoor: 2.9

Website LinkedIn Glassdoor

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Mozilla

1 month ago

Senior Machine Learning Engineer, Applied AI Modeling

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 19 hours agoStatus: Live

Job Summary

Location: United States

Workplace: Remote

Employment Type: Full time

Job Function: Data Science & Machine Learning

Key Responsibilities

•Develop and fine-tune large language models (LLMs) for intelligent, safe, and responsive browser interactions
•Apply retrieval-augmented generation (RAG), summarization, classification, and intent modeling techniques in real-world browser workflows
•Use modern ML tooling to support end-to-end model development, including experimentation, evaluation, and rollout
•Collaborate closely with product and engineering partners to design, iterate, and launch features aligned with user needs and Mozilla’s values
•Design and implement experiments to test model behavior in production, analyze results, and iterate based on findings

Pay and Benefits

Perks:Health InsuranceDentalVisionLearning BudgetHome OfficeWell-being StipendParential LeaveAnnual Bonus

Key Requirements

•4+ years of experience in applied machine learning, with a focus on natural language processing or generative AI
•Hands-on experience fine-tuning and evaluating LLMs using modern tools and open-source libraries
•Strong understanding of prompt engineering, embedding-based retrieval, and evaluation strategies for generative applications
•Experience using ML tooling to lead the end-to-end lifecycle of model development—from data exploration to deployment-ready artifacts
•Track record of building user-facing AI features with privacy, latency, and usability considerations

Experience:4+ yearsOpen-sourceAIGenerative AIBrowser

Skills:CommunicationCollaborationProblem-solving

Languages:English

Tech Stack:Hugging FaceLangChainWeights & BiasesRayLLMsRetrieval-augmented generationEmbedding-based retrieval

Company Brief

Mozilla

Industry: Enterprise Software

Company Size: Large (251 to 1,000 employees)

Growth: Nonprofit & NGO

Headquarters: San Francisco, United States

Founded: 1998

Glassdoor: 2.9

Website LinkedIn Glassdoor