Senior Machine Learning Engineer
New
M
MozillaTechnology/Browser
Remote USFull-TimeSenior
Salary$139,000 — $218,000 USD
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Job Details
- Experience
- 4+ years
- Required Skills
- Machine LearningNLPPrompt EngineeringGenerative AILangChain
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.
- Track record of building user-facing AI features, especially where privacy, latency, and usability are critical.
- Clear communication skills and ability to collaborate with multi-functional partners.
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.
- Design and implement experiments to test model behavior in production, analyze results, and iterate based on findings.
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